Sensor module, shah optical system, and electronic device

Abstract

The present disclosure relates to the field of optical technology, and particularly to a sensor module, a SHIM optical system and an electronic device. The present disclosure aims to solve the technical problem that the light-transmitting cover plate of the existing detector is inclined to the optical axis to generate astigmatism, affecting the imaging clarity. The sensor module of the present disclosure is applied to a SHIM optical path, which comprises a photosensitive chip, a light-transmitting cover plate and a correction component, the correction component is arranged on the side of the light-transmitting cover plate away from the photosensitive chip; the correction component comprises at least one optical wedge, the entrance surface and the exit surface of the optical wedge are both planes, and the entrance surface and the exit surface of the optical wedge have a preset included angle; the object-side light rays are imaged on the photosensitive chip via the correction component and the light-transmitting cover plate, after the refraction of the light rays through the optical wedge, the optical path difference between the meridional light beams and the sagittal light beams in the light rays is reduced, thereby correcting the astigmatism caused by the light-transmitting cover plate, improving the imaging quality of the SHIM optical system, and further improving the detection accuracy of the SHIM optical system.

Description

Technical Field

[0001] This disclosure relates to the field of optical technology, and in particular to a sensor module, a SAM optical system, and electronic equipment. Background Technology

[0002] A Scham optical system is a lens that uses Scham's law for imaging. According to Scham's law, when the extensions of the target plane, the lens principal plane, and the detector plane intersect on a single line, a clear image can be formed of the entire field of view of the tilted target.

[0003] The detector surface is typically equipped with a light-transmitting cover plate parallel to it to protect the detector. However, the optical axis of the Schahm optical system is at an angle to the detector plane, which in turn causes an angle between the light-transmitting cover plate and the optical axis of the Schahm optical system. The light-transmitting cover plate, tilted towards the optical axis, produces astigmatism, causing the convergence points of the meridional and sagittal beams of light to be at different points. This results in significant differences in image contrast in different directions, leading to unclear imaging. Summary of the Invention

[0004] This disclosure provides a sensor module, a SAM optical system, and an electronic device to solve the technical problem of astigmatism caused by the light-transmitting cover plate of existing detectors being tilted to the optical axis, which affects the image clarity.

[0005] To solve the above-mentioned technical problems, the present disclosure adopts the following technical solution:

[0006] The first aspect of this disclosure provides a sensor module for use in a SAM optical path, comprising a photosensitive chip, a light-transmitting cover plate, and a correction component. The light-transmitting cover plate is disposed parallel to the front side of the photosensitive chip, and the correction component is disposed on the side of the light-transmitting cover plate opposite to the photosensitive chip. The correction component includes at least one optical wedge, the incident surface and the exit surface of the optical wedge being both planar, and a preset angle is formed between the incident surface and the exit surface of the optical wedge. Object-side light is imaged onto the photosensitive chip via the correction component and the light-transmitting cover plate.

[0007] Compared with the prior art, the sensor module provided by the first aspect of this disclosure has the following advantages:

[0008] The sensor module provided in this disclosure, by setting a correction component, allows object-side light to be imaged onto the photosensitive chip via the correction component and the light-transmitting cover plate. Furthermore, after the light is refracted by the light wedge, the optical path difference between the meridional beam and the sagittal beam in the light is reduced, thereby reducing the distance between the convergence point of the meridional beam and the convergence point of the sagittal beam. This corrects the astigmatism caused by the light-transmitting cover plate, improves the imaging quality of the SAM optical system, and further improves the detection accuracy of the SAM optical system.

[0009] As an improvement to the sensor module described above, object-side light is imaged onto the photosensitive chip via the correction component and the light-transmitting cover, and the difference dv between the meridional component and the sagittal component of the modulation transfer function at the Nyquist frequency of each field of view satisfies 0 ≤ dv ≤ 0.4.

[0010] As an improvement to the sensor module disclosed herein, the distance between the incident surface and the exit surface of the optical wedge is the thickness of the optical wedge, and the thickness of the optical wedge gradually increases or decreases along a preset direction; the correction component includes multiple optical wedges, which are arranged sequentially along the optical axis, and the multiple optical wedges have the same refractive index; the sum of the thicknesses of the multiple optical wedges gradually increases or decreases along the preset direction.

[0011] As an improvement to the sensor module described above in this disclosure, the correction component includes a plurality of optical wedges arranged sequentially along the optical axis, wherein the refractive index of at least one optical wedge is different from that of the other optical wedges, so that the difference dv between the meridional component and the sagittal component of the modulation transfer function of each field of view at the Nyquist frequency of the photosensitive chip satisfies 0 ≤ dv ≤ 0.4.

[0012] As an improvement to the sensor module described above, one of the incident surface and the exit surface of the light wedge is perpendicular to the optical axis, and the other of the incident surface and the exit surface of the light wedge is not perpendicular to the optical axis, so that the incident surface and the exit surface of the light wedge have the preset angle.

[0013] As an improvement to the sensor module disclosed herein, the correction component further includes a reflector, which forms a set angle with the optical axis before reflection; the reflector is located on the side of the optical wedge away from the light-transmitting cover plate; the correction component, the light-transmitting cover plate, and the photosensitive chip are arranged sequentially along the optical axis after reflection.

[0014] A second aspect of this disclosure provides a SAM optical system, comprising: a SAM lens, a correction component, and a light-transmitting cover plate arranged sequentially from the object side to the image side along the optical axis, wherein object-side light passes sequentially through the SAM lens, the correction component, and the light-transmitting cover plate; the SAM lens includes at least one lens, the correction component includes at least one optical wedge, the incident surface and the exit surface of the optical wedge are both planar, and a preset angle is formed between the incident surface and the exit surface of the optical wedge.

[0015] Compared with the prior art, the Sham optical system provided in the second aspect of this disclosure has the following advantages:

[0016] The SAM optical system disclosed herein provides an object-side light source that sequentially passes through a SAM lens, a correction component, and a light-transmitting cover. After refraction by the light wedge, the optical path difference between the meridional and sagittal beams is reduced, thereby decreasing the distance between the convergence points of the meridional and sagittal beams. This corrects the astigmatism caused by the light-transmitting cover, improving the imaging quality of the SAM optical system and consequently enhancing its detection accuracy. Furthermore, the SAM lens in this embodiment features high resolution, high contrast, and low distortion.

[0017] As an improvement to the Sham optical system disclosed herein, the Sham optical system further includes a photosensitive chip disposed along the optical axis, and a light-transmitting cover disposed parallel to the photosensitive chip; object-side light rays are imaged onto the photosensitive chip via the Sham lens, the correction component, and the light-transmitting cover, and the difference dv between the meridional component and the sagittal component of the modulation transfer function of each field of view at the Nyquist frequency of the photosensitive chip satisfies 0 ≤ dv ≤ 0.4.

[0018] As an improvement to the Sham optical system disclosed herein, the distance between the incident surface and the exit surface of the optical wedge is the thickness of the optical wedge, and the thickness of the optical wedge gradually increases or decreases along a preset direction; the correction component includes a plurality of optical wedges, which are arranged sequentially along the optical axis, and the refractive index of the plurality of optical wedges is the same; the sum of the thicknesses of the plurality of optical wedges gradually increases or decreases along the preset direction.

[0019] As an improvement to the Sham optical system described above in this disclosure, the correction component includes two optical wedges, and the two optical wedges have the same refractive index;

[0020] The incident surface of the optical wedge near the Sham lens is perpendicular to the optical axis, and the angle A1 between the incident and exit surfaces of the optical wedge near the Sham lens satisfies 0° < A1 ≤ 3°; the incident surface of the optical wedge near the image sensor is perpendicular to the optical axis, and the angle A2 between the incident and exit surfaces of the optical wedge near the image sensor satisfies 0° < A1 ≤ 4°; and / or,

[0021] The center thickness WT1 of the optical wedge near the Sham lens satisfies 1mm ≤ WT1 ≤ 4mm, and the center thickness WT2 of the optical wedge near the image sensor satisfies 1mm ≤ WT2 ≤ 4mm; and / or,

[0022] The air gap AT01 between the optical wedge near the SAM lens and the lens closest to the object side of the SAM lens along the optical axis satisfies 15mm≤AT01≤40mm, and the air gap AT02 between the two optical wedges along the optical axis satisfies 0mm≤AT02≤10mm; the air gap AT03 between the optical wedge near the image sensor and the image plane of the image sensor along the optical axis satisfies 9mm≤AT03≤11mm.

[0023] As an improvement to the Sham optical system described above, the correction component includes a plurality of optical wedges arranged sequentially along the optical axis, wherein the refractive index of at least one optical wedge is different from that of the other optical wedges, so that the difference dv between the meridional component and the sagittal component of the modulation transfer function of each field of view at the Nyquist frequency of the photosensitive chip satisfies 0 ≤ dv ≤ 0.4.

[0024] As an improvement to the SAM optical system disclosed herein, one of the incident surface and the exit surface of the optical wedge is perpendicular to the optical axis, and the other of the incident surface and the exit surface of the optical wedge is not perpendicular to the optical axis, so that the incident surface and the exit surface of the optical wedge have the preset angle.

[0025] As an improvement to the Sham optical system disclosed herein, the correction component further includes a reflector that forms a set angle with the optical axis before reflection; the reflector is located between the Sham lens and the correction component; the correction component and the light-transmitting cover are arranged sequentially along the optical axis after reflection.

[0026] As an improvement to the Sham optical system described above in this disclosure, the angle A3 of the set angle satisfies 40°≤A3≤70°; and / or,

[0027] The air gap AT01 between the reflector and the lens closest to the object side of the SAM lens along the optical axis satisfies 15mm≤AT01≤25mm, and the air gap AT02 between the reflector and the adjacent optical wedge along the optical axis satisfies 10mm≤AT02≤20mm.

[0028] As an improvement to the SAM optical system disclosed herein, the correction component is fixedly connected to the SAM lens; or, the correction component is fixed to the light-incident surface side of the light-transmitting cover.

[0029] As an improvement to the SAM optical system disclosed herein, the focal length f of the SAM lens satisfies 45mm≤f≤100mm, the aperture number Fno satisfies F1.2≤Fno≤F6, and the field of view FOV satisfies 20mm≤FOV≤150mm; the angle A4 between the light-transmitting cover plate and the optical axis satisfies 20°≤A4≤70°.

[0030] As an improvement to the SAM optical system disclosed herein, the SAM lens includes an aperture stop and multiple lenses arranged coaxially from the object side to the image side. The aperture stop has multiple lenses on the object side and multiple lenses on the image side. The number of lenses on the object side and the number of lenses on the image side differ by no more than one.

[0031] As an improvement to the SAM optical system disclosed herein, the SAM lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, and a tenth lens arranged coaxially from the object side to the image side; the aperture stop is located between the fifth lens and the sixth lens; wherein the first lens, the second lens, the third lens, the fourth lens, and the fifth lens form a front lens group, the sixth lens, the seventh lens, and the eighth lens form a middle lens group, and the ninth lens and the tenth lens form a rear lens group.

[0032] As an improvement to the Sham optical system disclosed herein, the first lens is a biconvex lens with positive optical power, the second lens is a convex-concave lens with positive optical power, the third lens is a convex-concave lens with negative optical power, the fourth lens is a convex-concave lens with negative optical power, the fifth lens is a biconvex lens with negative optical power, the sixth lens is a concave-plano lens with negative optical power, the seventh lens is a plano-convex lens with positive optical power, the eighth lens is a concave-convex lens with positive optical power, the ninth lens is a concave-convex lens with positive optical power, and the tenth lens is a convex-concave lens with positive optical power.

[0033] As an improvement to the Sham optical system disclosed herein, the focal length fa of the front lens group satisfies 60mm≤fa≤90mm, the focal length fb of the middle lens group satisfies -200mm≤fb≤-100mm, and the focal length fc of the rear lens group satisfies 20mm≤fc≤50mm; the axial distance d12 between the front lens group and the middle lens group satisfies 2mm≤d12≤7mm, the axial distance d23 between the middle lens group and the rear lens group satisfies 3mm≤d23≤11mm, and the axial distance d34 between the rear lens group and the correction component satisfies 10mm≤d34≤50mm.

[0034] As an improvement to the Sham optical system disclosed herein, the radius of curvature R11 of the incident surface of the first lens satisfies 30mm ≤ R11 ≤ 50mm, and the radius of curvature R12 of the exit surface satisfies -135mm ≤ R12 ≤ -115mm; the radius of curvature R21 of the incident surface of the second lens satisfies 15mm ≤ R21 ≤ 35mm, and the radius of curvature R22 of the exit surface satisfies 25mm ≤ R22 ≤ 45mm; the radius of curvature of the incident surface of the third lens... The radius R31 of the fourth lens satisfies 20mm ≤ R31 ≤ 40mm, and the radius of curvature R32 of the exit surface satisfies 15mm ≤ R32 ≤ 35mm; the radius of curvature R41 of the incident surface of the fourth lens satisfies 15mm ≤ R41 ≤ 35mm, and the radius of curvature R42 of the exit surface satisfies 40mm ≤ R42 ≤ 65mm; the radius of curvature R51 of the incident surface of the fifth lens satisfies -75mm ≤ R51 ≤ -50mm, and the radius of curvature R52 of the exit surface satisfies... 20mm≤R52≤40mm; the radius of curvature R61 of the incident surface of the sixth lens satisfies -30mm≤R61≤-10mm, and the radius of curvature R62 of the exit surface is infinite; the radius of curvature R71 of the incident surface of the seventh lens is infinite, and the radius of curvature R72 of the exit surface satisfies -35mm≤R72≤-15mm; the radius of curvature R81 of the incident surface of the eighth lens satisfies -130mm≤R81≤-60mm, and the radius of curvature R62 of the exit surface is infinite. The radius of curvature R82 of the ninth lens satisfies -45mm≤R82≤-25mm; the radius of curvature R91 of the incident surface of the ninth lens satisfies -640mm≤R91≤-430mm, and the radius of curvature R92 of the exit surface satisfies -50mm≤R92≤-30mm; the radius of curvature R101 of the incident surface of the tenth lens satisfies 40mm≤R101≤60mm, and the radius of curvature R12 of the exit surface satisfies 150mm≤R102≤170mm.

[0035] As an improvement to the Sham optical system disclosed herein, the center thickness GT1 of the first lens satisfies 3mm ≤ GT1 ≤ 7mm; the center thickness GT2 of the second lens satisfies 2mm ≤ GT2 ≤ 5mm; the center thickness GT3 of the third lens satisfies 2mm ≤ GT3 ≤ 5mm; the center thickness GT4 of the fourth lens satisfies 2mm ≤ GT4 ≤ 5mm; the center thickness GT5 of the fifth lens satisfies 1mm ≤ GT5 ≤ 4mm; the center thickness GT6 of the sixth lens satisfies 1mm ≤ GT6 ≤ 4mm; the center thickness GT7 of the seventh lens satisfies 4mm ≤ GT7 ≤ 7mm; the center thickness GT8 of the eighth lens satisfies 2mm ≤ GT8 ≤ 6mm; the center thickness GT9 of the ninth lens satisfies 3mm ≤ GT9 ≤ 7mm; and the center thickness GT10 of the tenth lens satisfies 3mm ≤ GT10 ≤ 6mm.

[0036] As an improvement to the Sham optical system disclosed herein, the air gap AT1 between the first lens and the second lens along the optical axis satisfies 0 mm ≤ AT1 ≤ 2 mm; the air gap AT2 between the second lens and the third lens along the optical axis satisfies 0 mm ≤ AT2 ≤ 4 mm; the air gap AT3 between the third lens and the fourth lens along the optical axis satisfies 1 mm ≤ AT3 ≤ 3 mm; the air gap AT4 between the fourth lens and the fifth lens along the optical axis satisfies 1 mm ≤ AT4 ≤ 3 mm; and the air gap between the fifth lens and the aperture stop along the optical axis... The air gap AT5 satisfies 1mm≤AT5≤3mm; the air gap AT6 between the aperture stop and the sixth lens along the optical axis satisfies 2mm≤AT6≤4mm; the sixth lens and the seventh lens are cemented lenses; the air gap AT7 between the seventh lens and the eighth lens along the optical axis satisfies 0mm≤AT7≤4mm; the air gap AT8 between the eighth lens and the ninth lens along the optical axis satisfies 4mm≤AT8≤9mm; the air gap AT9 between the ninth lens and the tenth lens along the optical axis satisfies 0mm≤AT9≤2mm.

[0037] As an improvement to the Sham optical system disclosed herein, the focal length f1 of the first lens satisfies 35mm ≤ f1 ≤ 45mm; the focal length f2 of the second lens satisfies 80mm ≤ f2 ≤ 130mm; the focal length f3 of the third lens satisfies -70mm ≤ f3 ≤ -35mm; the focal length f4 of the fourth lens satisfies 40mm ≤ f4 ≤ 70mm; the focal length f5 of the fifth lens satisfies -25mm ≤ f5 ≤ -15mm; the focal length f6 of the sixth lens satisfies -25mm ≤ f6 ≤ -15mm; the focal length f7 of the seventh lens satisfies 35mm ≤ f7 ≤ 45mm; the focal length f8 of the eighth lens satisfies 85mm ≤ f8 ≤ 105mm; the focal length f9 of the ninth lens satisfies 45mm ≤ f9 ≤ 65mm; and the focal length f10 of the tenth lens satisfies 80mm ≤ f10 ≤ 100mm.

[0038] As an improvement to the SAM optical system disclosed herein, the focal length f1 of the first lens and the focal length f of the SAM lens satisfy 0.5 < f1 / f < 2.5; the focal length f2 of the second lens and the focal length f of the SAM lens satisfy 1 < f2 / f < 4; the focal length f3 of the third lens and the focal length f of the SAM lens satisfy 0.5 < |f3 / f| < 2.5; the focal length f4 of the fourth lens and the focal length f of the SAM lens satisfy 0.5 < f4 / f < 2.5; and the focal length f5 of the fifth lens and the focal length f of the SAM lens satisfy 0.5 < f4 / f < 2.5. 2 < |f5 / f| < 2; the focal length f6 of the sixth lens and the focal length f of the Sham lens satisfy 0.2 < |f6 / f| < 2; the focal length f7 of the seventh lens and the focal length f of the Sham lens satisfy 0.5 < f7 / f < 2.5; the focal length f8 of the eighth lens and the focal length f of the Sham lens satisfy 1 < f8 / f < 3; the focal length f9 of the ninth lens and the focal length f of the Sham lens satisfy 0.5 < |f9 / f| < 2.5; the focal length f10 of the tenth lens and the focal length f of the Sham lens satisfy 1 < f10 / f < 3.

[0039] As an improvement to the Sham optical system disclosed herein, the refractive index N1 of the first lens satisfies 1.7 ≤ N1 ≤ 1.8, and the Abbe number V1 satisfies 45 ≤ V1 ≤ 50; the refractive index N2 of the second lens satisfies 1.8 ≤ N2 ≤ 1.9, and the Abbe number V2 satisfies 35 ≤ V2 ≤ 40; the refractive index N3 of the third lens satisfies 1.7 ≤ N3 ≤ 1.8, and the Abbe number V3 satisfies 35 ≤ V3 ≤ 40; the refractive index N4 of the fourth lens satisfies 1.8 ≤ N4 ≤ 1.9, and the Abbe number V4 satisfies 40 ≤ V4 ≤ 45; the refractive index N5 of the fifth lens satisfies 1.8 ≤ N5 ≤ 1.9, and the Abbe number V5 satisfies 4... The refractive index N6 of the sixth lens satisfies 1.7≤N6≤1.8, and the Abbe number V6 satisfies 25≤V6≤30; the refractive index N7 of the seventh lens satisfies 1.5≤N7≤1.6, and the Abbe number V7 satisfies 80≤V7≤85; the refractive index N8 of the eighth lens satisfies 1.5≤N8≤1.6, and the Abbe number V8 satisfies 80≤V8≤85; the refractive index N9 of the ninth lens satisfies 1.7≤N9≤1.8, and the Abbe number V9 satisfies 50≤V9≤55; the refractive index N10 of the tenth lens satisfies 1.7≤N10≤1.8, and the Abbe number V10 satisfies 50≤V10≤55.

[0040] As an improvement to the SAM optical system disclosed herein, the SAM lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens arranged coaxially from the object side to the image side; the aperture stop is located between the fourth lens and the fifth lens; wherein the first lens, the second lens, the third lens, and the fourth lens form a front lens group, the fifth lens, the sixth lens, and the seventh lens form a middle lens group, and the eighth lens and the ninth lens form a rear lens group.

[0041] As an improvement to the Sham optical system disclosed herein, the first lens is a biconvex lens with positive optical power, the second lens is a convex-concave lens with positive optical power, the third lens is a convex-concave lens with positive optical power, the fourth lens is a convex-concave lens with negative optical power, the fifth lens is a concave-plano lens with negative optical power, the sixth lens is a plano-concave lens with positive optical power, the fifth and sixth lenses are cemented lenses and have negative optical power; the seventh lens is a concave-convex lens with positive optical power, the eighth lens is a plano-convex lens with positive optical power, and the ninth lens is a convex-concave lens with positive optical power.

[0042] As an improvement to the Sham optical system disclosed herein, the focal length fa of the front lens group satisfies 25mm≤fa≤50mm, the focal length fb of the middle lens group satisfies -70mm≤fb≤-50mm, and the focal length fc of the rear lens group satisfies 20mm≤fc≤40mm; the axial distance d12 between the front lens group and the middle lens group satisfies 10mm≤d12≤12mm, the axial distance d23 between the middle lens group and the rear lens group satisfies 0.4mm≤d23≤2mm, and the axial distance d34 between the rear lens group and the correction component satisfies 20mm≤d34≤40mm.

[0043] As an improvement to the Sham optical system disclosed herein, the radius of curvature R11 of the incident surface of the first lens satisfies 50mm ≤ R11 ≤ 60mm, and the radius of curvature R12 of the exit surface satisfies -65mm ≤ R12 ≤ -55mm; the radius of curvature R21 of the incident surface of the second lens satisfies 20mm ≤ R21 ≤ 30mm, and the radius of curvature R22 of the exit surface satisfies 75mm ≤ R22 ≤ 85mm; the radius of curvature R31 of the incident surface of the third lens satisfies 15mm ≤ R31 ≤ 25mm, and the radius of curvature R32 of the exit surface satisfies 45mm ≤ R32 ≤ 55mm; the radius of curvature R41 of the incident surface of the fourth lens satisfies 75mm ≤ R41 ≤ 85mm, and the radius of curvature R42 of the exit surface satisfies 5mm ≤ R42 ≤ 15mm; the radius of curvature R41 of the incident surface of the fifth lens satisfies 5mm ≤ R42 ≤ 15mm; the radius of curvature R1 ...1 ≤ 60mm, and the radius of curvature R12 of the exit surface satisfies -65mm ≤ R12 ≤ -55mm; the radius of curvature R11 of the incident surface of the third lens satisfies 15mm ≤ R31 ≤ 25mm, and the radius of curvature R22 of the exit surface satisfies 5mm ≤ R42 ≤ 15mm; the radius of cur The radius of curvature R51 of the incident surface of the sixth lens satisfies -15mm ≤ R51 ≤ -5mm, and the radius of curvature R52 of the exit surface is infinite; the radius of curvature R61 of the incident surface of the sixth lens is infinite, and the radius of curvature R62 of the exit surface satisfies -25mm ≤ R51 ≤ -15mm; the radius of curvature R71 of the incident surface of the seventh lens satisfies -35mm ≤ R51 ≤ -25mm, and the radius of curvature R72 of the exit surface satisfies -25mm ≤ R72 ≤ -15mm; the radius of curvature R81 of the incident surface of the eighth lens is infinite, and the radius of curvature R82 of the exit surface satisfies -35mm ≤ R82 ≤ -25mm; the radius of curvature R91 of the incident surface of the ninth lens satisfies 30mm ≤ R91 ≤ 40mm, and the radius of curvature R92 of the exit surface satisfies 115mm ≤ R92 ≤ 125mm.

[0044] As an improvement to the Sham optical system disclosed herein, the center thickness GT1 of the first lens satisfies 3mm ≤ GT1 ≤ 6mm; the center thickness GT2 of the second lens satisfies 2mm ≤ GT2 ≤ 5mm; the center thickness GT3 of the third lens satisfies 2mm ≤ GT3 ≤ 5mm; the center thickness GT4 of the fourth lens satisfies 2mm ≤ GT4 ≤ 5mm; the center thickness GT5 of the fifth lens satisfies 1mm ≤ GT5 ≤ 3mm; the center thickness GT6 of the sixth lens satisfies 2mm ≤ GT6 ≤ 5mm; the center thickness GT7 of the seventh lens satisfies 3mm ≤ GT7 ≤ 6mm; the center thickness GT8 of the eighth lens satisfies 3mm ≤ GT8 ≤ 6mm; and the center thickness GT9 of the ninth lens satisfies 3mm ≤ GT9 ≤ 6mm.

[0045] As an improvement to the Sham optical system disclosed herein, the air gap AT1 between the first lens and the second lens along the optical axis satisfies 0mm≤AT1≤2mm; the air gap AT2 between the second lens and the third lens along the optical axis satisfies 0mm≤AT2≤2mm; the air gap AT3 between the third lens and the fourth lens along the optical axis satisfies 0mm≤AT3≤2mm; the air gap AT4 between the fourth lens and the aperture stop along the optical axis satisfies 1mm≤AT4≤3mm; the air gap AT5 between the aperture stop and the fifth lens along the optical axis satisfies 7mm≤AT5≤9mm; the fifth lens and the sixth lens are cemented lenses; the air gap AT6 between the sixth lens and the seventh lens along the optical axis satisfies 0mm≤AT6≤2mm; the air gap AT7 between the seventh lens and the eighth lens along the optical axis satisfies 0mm≤AT7≤2mm; and the air gap AT8 between the eighth lens and the ninth lens along the optical axis satisfies 0mm≤AT8≤2mm.

[0046] As an improvement to the Sham optical system disclosed herein, the focal length f1 of the first lens satisfies 55mm ≤ f1 ≤ 65mm; the focal length f2 of the second lens satisfies 40mm ≤ f2 ≤ 50mm; the focal length f3 of the third lens satisfies 40mm ≤ f3 ≤ 50mm; the focal length f4 of the fourth lens satisfies -25mm ≤ f4 ≤ -15mm; the focal length f5 of the fifth lens satisfies -20mm ≤ f5 ≤ -10mm; the focal length f6 of the sixth lens satisfies 25mm ≤ f6 ≤ 35mm; the focal length f7 of the seventh lens satisfies 65mm ≤ f7 ≤ 75mm; the focal length f8 of the eighth lens satisfies 35mm ≤ f8 ≤ 45mm; and the focal length f9 of the ninth lens satisfies 55mm ≤ f9 ≤ 65mm.

[0047] As an improvement to the Sham optical system disclosed herein, the focal length f1 of the first lens and the focal length f of the Sham lens satisfy 0.5 < f1 / f < 2; the focal length f2 of the second lens and the focal length f of the Sham lens satisfy 0.5 < f2 / f < 2.5; the focal length f3 of the third lens and the focal length f of the Sham lens satisfy 0.5 < f3 / f < 2.5; the focal length f4 of the fourth lens and the focal length f of the Sham lens satisfy 3 < f4 / f < 5; the focal length f5 of the fifth lens and the focal length f of the Sham lens satisfy 0.5 < f1 / f < 2.5; the focal length f4 of the fourth lens and the focal length f of the Sham lens satisfy 3 < f4 / f < 5; the focal length f5 of the fifth lens and the focal length f of the Sham lens satisfy 0.5 < f1 / f < 2.5; the focal length f1 of the third ...1 of the fourth lens and the focal length f of the Sham lens satisfy 0.5 < f1 / f < 2.5; the focal length f2 of the second lens and the focal length f of the Sham lens satisfy 0.5 < f1 / f < 2.5; the focal length f3 of the third lens and the focal length f of the Sham lens satisfy 0.5 < f1 / f < 2.5; the focal length f4 of the fourth lens and the focal length f of the Sham lens satisfy 3 < The focal lengths f of the SAM lens satisfy 0.1 < |f5 / f| < 2; the focal length f6 of the sixth lens satisfies 0.2 < |f6 / f| < 2; the focal length f7 of the seventh lens satisfies 0.5 < f7 / f < 2.5; the focal length f8 of the eighth lens satisfies 0.5 < f8 / f < 2.5; and the focal length f9 of the ninth lens satisfies 0.5 < f9 / f < 2.5.

[0048] As an improvement to the Sham optical system disclosed herein, the refractive index N1 of the first lens satisfies 1.5 ≤ N1 ≤ 1.6, and the Abbe number V1 satisfies 80 ≤ V1 ≤ 85; the refractive index N2 of the second lens satisfies 1.7 ≤ N2 ≤ 1.8, and the Abbe number V2 satisfies 50 ≤ V2 ≤ 55; the refractive index N3 of the third lens satisfies 1.7 ≤ N3 ≤ 1.8, and the Abbe number V3 satisfies 45 ≤ V3 ≤ 50; the refractive index N4 of the fourth lens satisfies 1.6 ≤ N4 ≤ 1.7, and the Abbe number V4 satisfies 30 ≤ V4 ≤ 35; the refractive index N1 of the fifth lens satisfies 1.5 ≤ N1 ≤ 1.6, and the Abbe number V1 satisfies 80 ≤ V1 ≤ 85; the refractive index N1 of the second lens satisfies 1.7 ≤ N2 ≤ 1.8, and the Abbe number V2 satisfies 50 ≤ V2 ≤ 55; the refractive index N1 of the third lens satisfies 1.7 ≤ N3 ≤ 1.8, and the Abbe number V3 satisfies 45 ≤ V3 ≤ 50; the refractive index N4 of the fourth lens satisfies 1.6 ≤ N4 ≤ 1.7, and the Abbe number V4 satisfies 30 ≤ V4 ≤ 35; the refractive index N1 of the fifth ... The refractive index of the sixth lens N6 satisfies 1.8 ≤ N5 ≤ 1.9, and the Abbe number V5 satisfies 25 ≤ V5 ≤ 30; the refractive index of the seventh lens N7 satisfies 1.6 ≤ N6 ≤ 1.7, and the Abbe number V6 satisfies 45 ≤ V6 ≤ 50; the refractive index of the seventh lens N7 satisfies 1.8 ≤ N7 ≤ 1.9, and the Abbe number V7 satisfies 40 ≤ V7 ≤ 45; the refractive index of the eighth lens N8 satisfies 1.7 ≤ N8 ≤ 1.8, and the Abbe number V8 satisfies 50 ≤ V8 ≤ 55; the refractive index of the ninth lens N9 satisfies 1.8 ≤ N9 ≤ 1.9, and the Abbe number V9 satisfies 40 ≤ V9 ≤ 45.

[0049] A third aspect of this disclosure provides an electronic device that includes the sensor module described in the first aspect of this disclosure; or, includes the Sham optical system provided in the second aspect.

[0050] The electronic device of the third aspect of this disclosure, since it includes the sensor module described in the first aspect of this disclosure; or includes the SAM optical system provided in the second aspect, also has the same advantages as the sensor module described in the first aspect or the SAM optical system described in the second aspect.

[0051] As an improvement to the electronic device described in this disclosure, the electronic device is a 3D camera. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments of this disclosure or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only a part of the embodiments of this disclosure. These drawings and text descriptions are not intended to limit the scope of the concept of this disclosure in any way, but to illustrate the concept of this disclosure to those skilled in the art by referring to specific embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 This is a diagram of the principle of Scham's Law.

[0054] Figure 2 This is a schematic diagram of the light path at the light-transmitting cover plate;

[0055] Figure 3 This is a schematic diagram of the sensor assembly provided in Embodiment 1 of this disclosure;

[0056] Figures 4a to 4d This is a schematic diagram of the optical wedge structure provided in Embodiment 1 of this disclosure;

[0057] Figures 5a to 5c A schematic diagram of the structure of the correction component provided in Embodiment 1 of this disclosure when it includes multiple optical wedges;

[0058] Figure 6 This is a schematic diagram of the sensor assembly provided in Embodiment 2 of this disclosure;

[0059] Figure 7 This is a schematic diagram of the structure of the Sham optical system provided in Embodiment 1 of this disclosure;

[0060] Figure 8 This is a schematic diagram of the structure of the Sham optical system provided in Embodiment 2 of this disclosure;

[0061] Figure 9 This is a schematic diagram of the light rays of the Sham optical system provided in Embodiment 2 of this disclosure;

[0062] Figure 10 This is a schematic diagram of the structure of the Sham optical system provided in Embodiment 3 of this disclosure;

[0063] Figure 11 The field curvature diagram of the Schahm optical system provided in Embodiment 1 of this disclosure;

[0064] Figure 12The distortion diagram of the Schahm optical system provided in Embodiment 1 of this disclosure;

[0065] Figure 13 FFT MTF curves for the unsham optical system without an optical wedge;

[0066] Figure 14 The FFT MTF curve of the Schahm optical system provided in Embodiment 1 of this disclosure;

[0067] Figure 15 A simulated image frame of the Schahm optical system without an optical wedge;

[0068] Figure 16 A simulated image frame diagram of the Sham optical system provided in Embodiment 1 of this disclosure, with an optical wedge provided;

[0069] Figure 17 This is an optical dispersion pattern of the Schahm optical system provided in Embodiment 1 of this disclosure;

[0070] Figure 18 The field curvature diagram of the Schahm optical system provided in Embodiment 2 of this disclosure;

[0071] Figure 19 The distortion diagram of the Schahm optical system provided in Embodiment 2 of this disclosure;

[0072] Figure 20 FFT MTF curves for the unsham optical system without an optical wedge;

[0073] Figure 21 The FFT MTF curve of the Schahm optical system provided in Embodiment 2 of this disclosure;

[0074] Figure 22 A simulated image frame of the Schahm optical system without an optical wedge;

[0075] Figure 23 A simulated image frame diagram of the Sham optical system provided in Embodiment 2 of this disclosure, with an optical wedge provided;

[0076] Figure 24 This is an optical dispersion pattern of the Schahm optical system provided in Embodiment 2 of this disclosure;

[0077] Figure 25 This is a schematic diagram of the structure of the Sham optical system provided in Embodiment 3 of this disclosure;

[0078] Figure 26 The field curvature diagram of the Schahm optical system provided in Embodiment 3 of this disclosure;

[0079] Figure 27 The distortion diagram of the Schahm optical system provided in Embodiment 3 of this disclosure;

[0080] Figure 28 FFT MTF curves for the unsham optical system without an optical wedge;

[0081] Figure 29 The FFT MTF curve of the Schahm optical system provided in Embodiment 3 of this disclosure;

[0082] Figure 30 A simulated image frame of the Schahm optical system without an optical wedge;

[0083] Figure 31 A simulated image frame diagram of the Sham optical system provided in Embodiment 3 of this disclosure, with an optical wedge provided;

[0084] Figure 32 The optical dispersion pattern of the Sham optical system provided in Embodiment 3 of this disclosure is shown. Detailed Implementation

[0085] A Scham optics system is a lens that uses Scham's law to create an image. (Combined with...) Figure 1 According to Schamer's Law, when the extensions of the target plane, the principal plane of the lens, and the detector plane intersect on a single line, a clear image can be formed over the entire field of view of the tilted target. The angle of the optical path must satisfy the following relationship:

[0086] tanα / tanβ=b' / a'

[0087] Where α is the angle between the target plane and the lens optical axis, β is the angle between the detector plane and the lens optical axis; a' is the object distance of point D on the lens optical axis, b' is the image distance of point D on the optical axis, and b' / a' is the magnification of the lens.

[0088] The angle β between the detector plane and the lens optical axis must satisfy the following relationship:

[0089]

[0090] Where f' is the focal length of the lens.

[0091] For ease of installation, the detector surface is usually equipped with a light-transmitting cover plate parallel to it to protect the detector. However, the optical axis of the SAM optical system is at a certain angle to the detector plane, which causes the light-transmitting cover plate to also be at a certain angle to the optical axis of the SAM optical system, tilting it towards the optical axis.

[0092] Combination Figure 2 The light path diagram shown has a refractive index of n and a thickness of T on the cover plate. The angle between the cover plate's perpendicular plane and the optical axis is R, and the angle between the meridional ray and the optical axis is U. According to the Seyde polynomial, the resulting third-order wavefront aberration (ρ = 1) is:

[0093]

[0094]

[0095]

[0096] Wherein, ΔW sph For spherical difference, ΔW coms For coma, ΔW astig ρ represents astigmatism; θ and ρ are polar coordinate parameters of a certain field of view on the pupil.

[0097] Among them, spherical aberration ΔW sph It is independent of the included angle R and has a small value. When the incident light is parallel, the included angle U is 0, and the spherical aberration ΔW sph , coma ΔW coms And as well as the astigmatic ΔW astig Both are 0. When the cover plate is perpendicular to the optical axis, the vertical plane of the cover plate is parallel to the optical axis, the included angle R is 0, and both coma and astigmatism are 0. When the cover plate is not perpendicular to the optical axis, the included angle R is an acute angle greater than zero. The cover plate tilted to the optical axis inevitably produces astigmatism, causing the convergence points of the meridional and sagittal beams of light to be at different points. This results in a large difference in imaging quality between the meridional and sagittal directions, leading to a large difference in image contrast in different directions, resulting in unclear imaging and affecting imaging quality. When the SAM optical system is applied in the field of detection, it affects the detection accuracy and efficiency.

[0098] In related technologies, for SAM optical systems with a small angle R between the vertical plane of the cover plate and the optical axis, most do not correct the astigmatism caused by the cover plate; or, they add axis-shifting and tilting optical lenses to the SAM optical system for correction, which requires high assembly technology for the lenses, resulting in the actual imaging performance of the finished SAM optical system being lower than the theoretical design performance, affecting the actual application of the lens.

[0099] In view of this, the embodiments of this disclosure add an optical wedge to the Sham optical path to reduce the optical path difference between the meridional beam and the sagittal beam, correct the astigmatism caused by the light-transmitting cover plate, and improve the imaging quality and detection accuracy of the Sham optical system. Even when the angle between the target plane and the detector plane is large, the added optical wedge can still correct the astigmatism introduced by the light-transmitting cover plate.

[0100] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting this disclosure.

[0101] Example 1

[0102] Figure 3This is a schematic diagram of the sensor assembly provided in Embodiment 1 of this disclosure.

[0103] Combination Figure 3 This disclosure provides a sensor module for use in a SAM optical path, comprising a photosensitive chip 110, a light-transmitting cover plate 120, and a calibration component 200. The light-transmitting cover plate 120 is disposed parallel to the front side of the photosensitive chip 110, where "front side" refers to the side where light enters the photosensitive chip 110, i.e., the photosensitive surface side of the photosensitive chip 110. The light-transmitting cover plate 120 serves to protect the photosensitive chip 110 and may be made of a material such as light-transmitting glass.

[0104] The correction component 200 is disposed on the side of the light-transmitting cover plate 120 away from the photosensitive chip 110, so that the correction component 200 is located on the light-incident side of the light-transmitting cover plate 120, so that the light is corrected by the correction component 200 and then passes through the light-transmitting cover plate 120 and the photosensitive chip 110.

[0105] The correction component 200 of this embodiment includes at least one optical wedge 210. Both the incident and exit surfaces of the optical wedge 210 are planar, and a preset angle exists between them. The incident surface of the optical wedge 210 faces the object side, and the exit surface faces the light-transmitting cover plate 120. The preset angle is greater than 0°, and can be less than or equal to 4°, for example, 2°, 4°, etc.

[0106] In some embodiments, one of the incident surface and the exit surface of the optical wedge 210 is perpendicular to the optical axis O, and the other of the incident surface and the exit surface of the optical wedge 210 is not perpendicular to the optical axis O, so that there is a preset angle between the incident surface and the exit surface of the optical wedge 210. Figure 4a The incident surface 211 of the optical wedge 210 is perpendicular to the optical axis O, and the exit surface 212 of the optical wedge 210 is not perpendicular to the optical axis O. The angle between the exit surface 212 and the normal plane H of the optical axis O is α, thus making the predetermined angle between the incident surface 211 and the exit surface 212 of the optical wedge 210 α. Alternatively, refer to... Figure 4b The exit surface 212 of the optical wedge 210 is perpendicular to the optical axis O, while the incident surface 211 of the optical wedge 210 is not perpendicular to the optical axis O. The angle between the incident surface 211 and the normal plane H of the optical axis O is α. This ensures that the preset angle between the incident surface 211 and the exit surface 212 of the optical wedge 210 is α. This configuration facilitates the processing of the optical wedge 210 and the setting of its angle.

[0107] Of course, the above is not a limitation on the angle setting of the optical wedge 210. In other embodiments, both the incident and exit surfaces of the optical wedge 210 are not perpendicular to the optical axis O. The following refers to the attached diagram. Figures 4c to 4d Detailed description.

[0108] Combination Figure 4c The incident surface 211 and the exit surface 212 of the optical wedge 210 are not perpendicular to the optical axis O. The incident surface 211 and the exit surface 212 are tilted in opposite directions relative to the normal plane H of the optical axis O, with the incident surface 211 tilted towards the image side and the exit surface 212 tilted towards the object side. The angle between the incident surface 211 and the normal plane H of the optical axis O is β1, and the angle between the exit surface 212 and the normal plane H of the optical axis O is β2. Therefore, the preset angle between the incident surface 211 and the exit surface 212 of the optical wedge 210 is the sum of β1 and β2.

[0109] Combination Figure 4d The incident surface 211 and the exit surface 212 of the optical wedge 210 are not perpendicular to the optical axis O. The incident surface 211 and the exit surface 212 have the same inclination direction relative to the normal plane H of the optical axis O, and both are inclined towards the image side. The angle between the incident surface 211 and the normal plane H of the optical axis O is β1, and the angle between the exit surface 212 and the normal plane H of the optical axis O is β2. Therefore, the preset angle between the incident surface 211 and the exit surface 212 of the optical wedge 210 is the difference between the larger angle and the smaller angle. Figure 4d In the angle shown, the preset included angle between the incident surface 211 and the exit surface 212 of the light wedge 210 is the difference between β1 and β2.

[0110] In this embodiment, the distance between the incident surface and the exit surface of the optical wedge 210 is the thickness of the optical wedge 210, and the thickness of the optical wedge 210 gradually increases or decreases along a preset direction. The preset direction lies within the normal plane H and is perpendicular to the optical axis O; in the accompanying drawings, the preset direction is the height direction. Figures 4a to 4d In the optical wedge 210 shown, the thickness of the optical wedge 210 gradually decreases from top to bottom in the attached figure. In this way, when light passes through the optical wedge 210, the optical path lengths of the meridional beam and the sagittal beam in the light are corrected, thereby reducing the distance between the convergence points of the meridional beam and the sagittal beam, and thus correcting the astigmatism caused by the light-transmitting cover plate 120.

[0111] The optical wedge 210 in this embodiment can be colorless optical glass or optical plastic, etc. The number of optical wedges 210 can be one, two, three, or more, and is not limited here.

[0112] With the above settings, the object-side light is imaged onto the photosensitive chip 110 via the correction component 200 and the light-transmitting cover plate 120. After the light is refracted by the light wedge 210, the optical path difference between the meridional beam and the sagittal beam in the light is reduced, which reduces the distance between the convergence point of the meridional beam and the convergence point of the sagittal beam, thereby correcting the astigmatism caused by the light-transmitting cover plate 120, improving the imaging quality of the SAM optical system, and thus improving the detection accuracy of the SAM optical system.

[0113] In the sensor module of this embodiment, object-side light is imaged onto the photosensitive chip 110 via the correction component 200 and the light-transmitting cover plate 120. The difference dv between the meridional and sagittal components of the modulation transfer function (MTF) of each field of view at the Nyquist frequency of the photosensitive chip 110 satisfies 0 ≤ dv ≤ 0.4. This corrects the astigmatism caused by the light-transmitting cover plate 120, improves the imaging quality of the SAM optical system, and further improves the detection accuracy of the SAM optical system.

[0114] In some embodiments, combined with Figure 3 The correction component 200 includes multiple optical wedges 210, which are arranged sequentially along the optical axis O. The multiple optical wedges 210 have the same refractive index, and the sum of their thicknesses gradually increases or decreases along a preset direction. This arrangement ensures that after light passes through the multiple optical wedges 210, the optical path lengths of the meridional and sagittal beams are corrected, reducing the distance between the convergence points of the meridional and sagittal beams, thereby correcting the astigmatism caused by the light-transmitting cover plate 120.

[0115] Combination Figure 5a Of the multiple optical wedges 210, one of their incident and exit surfaces is perpendicular to the optical axis O, and the other is not perpendicular to the optical axis O. The surfaces not perpendicular to the optical axis O may be adjacent or not. Figure 5a In the process, the sum of the thicknesses of the multiple optical wedges 210 gradually decreases along a predetermined direction (the direction of the arrow in the attached diagram). Combined with... Figure 5b The incident and exit surfaces of multiple optical wedges 210 can be non-perpendicular to the optical axis O. For example... Figure 5b As shown, the sum of the thicknesses of the multiple optical wedges 210 gradually increases along a predetermined direction (the direction of the arrow in the attached figure).

[0116] In other embodiments, the correction component 200 includes a plurality of optical wedges 210 arranged sequentially along the optical axis O, wherein at least one optical wedge has a different refractive index than the others, so that the difference dv between the meridional and sagittal components of the modulation transfer function at the Nyquist frequency of the photosensitive chip for each field of view satisfies 0 ≤ dv ≤ 0.4. Figure 5cAs shown, the refractive indices of the left and right optical wedges 210 are different. In this embodiment, the sum of the thicknesses of the multiple optical wedges 210 is the same along a preset direction (arrow direction in the attached figure). Since the refractive indices of the left and right optical wedges 210 are different, the optical path difference between the meridional and sagittal beams in the light rays is corrected after the light passes through the multiple optical wedges 210. This ensures that the difference dv between the meridional and sagittal components of the modulation transfer function at the Nyquist frequency of the photosensitive chip for each field of view satisfies 0 ≤ dv ≤ 0.4, thereby correcting the astigmatism caused by the light-transmitting cover plate 120, improving the imaging quality of the SAM optical system, and thus improving the detection accuracy of the SAM optical system.

[0117] When the correction component 200 includes a plurality of optical wedges 210, there may be a gap between two adjacent optical wedges 210, or the gap between two adjacent optical wedges 210 may be zero.

[0118] In this embodiment of the disclosure, the calibration component 200 is encapsulated on the light-incident side of the light-transmitting cover plate 120, and the calibration component 200, the light-transmitting cover plate 120 and the photosensitive chip 110 together form a sensor assembly.

[0119] Example 2

[0120] Figure 6 This is a schematic diagram of the sensor assembly provided in Embodiment 2 of this disclosure.

[0121] Combination Figure 6 In this embodiment, the correction component 200 includes at least one optical wedge 210. The structure, function, and effect of the optical wedge 210 are the same as in the above embodiments, and can be referred to the above embodiments for details, which will not be repeated here. The correction component 200 also includes a reflector 220, which is a plane reflector. The reflector 220 forms a set angle with the optical axis O before reflection, so that the optical axis O changes direction under the action of the reflector 220. The reflector 220 is located on the side of the optical wedge 210 away from the light-transmitting cover plate 120.

[0122] Thus, the correction component 200, the light-transmitting cover plate 120, and the photosensitive chip 110 are arranged sequentially along the reflected optical axis O. After the object-side light is refracted by the reflector 220, it is imaged onto the photosensitive chip 110 via the light wedge 210 and the light-transmitting cover plate 120. Furthermore, after the light is refracted by the light wedge 210, the optical path difference between the meridional beam and the sagittal beam in the light is reduced, which reduces the distance between the convergence point of the meridional beam and the convergence point of the sagittal beam. This corrects the astigmatism caused by the light-transmitting cover plate 120, improves the imaging quality of the SAM optical system, and further improves the detection accuracy of the SAM optical system.

[0123] The angle A3 between the reflector 220 and the optical axis O satisfies 40°≤A3≤70°, facilitating the setting and installation of the reflector 220. (See attached...) Figure 6 In this embodiment, the light wedge 210, the light-transmitting cover plate 120, and the photosensitive chip 110 are located above the reflector 220; the light wedge 210, the light-transmitting cover plate 120, and the photosensitive chip 110 may also be located below the reflector 220, which is related to the tilt direction of the reflector 220 relative to the optical axis O. This embodiment is not limited in this respect.

[0124] The embodiments disclosed herein reduce the length of the SAM optical system and thus reduce its volume by setting a reflector 220 on the light-incident side of the optical wedge 210.

[0125] It should be noted that the sensor modules provided in Embodiments 1 and 2 of this disclosure can be applied to any SAM lens and can all correct astigmatism caused by tilted light-transmitting cover plates.

[0126] Example 3

[0127] Figure 7 This is a schematic diagram of the structure of the Sham optical system provided in Embodiment 1 of this disclosure. Figure 8 This is a schematic diagram of the structure of the Sham optical system provided in Embodiment 2 of this disclosure. Figure 9 This is a schematic diagram of the light rays of the Sham optical system provided in Embodiment 2 of this disclosure; Figure 10 This is a schematic diagram of the structure of the Sham optical system provided in Embodiment 3 of this disclosure.

[0128] Combination Figures 7 to 9 This disclosure also provides a SAM optical system, which includes: a SAM lens 300, a correction component 200, and an image sensor 100 arranged sequentially from the object side to the image side along the optical axis. The image sensor 100 includes a photosensitive chip 110 and a light-transmitting cover plate 120 disposed parallel to the photosensitive chip 110. Object-side light passes sequentially through the SAM lens 300, the correction component 200, and the light-transmitting cover plate 120 to form an image on the photosensitive chip 110.

[0129] The Sham lens of this disclosure includes at least one lens, and the correction component 200 includes at least one optical wedge, the incident surface and the exit surface of the optical wedge are both planes, and there is a preset angle between the incident surface and the exit surface of the optical wedge.

[0130] In this embodiment, the structure, function and effect of the correction component 200 are the same as those in Embodiment 1 or Embodiment 2 above. For details, please refer to the above embodiments, and they will not be repeated here.

[0131] exist Figures 7 to 9 In the illustrated Sham optical system, the correction component 200 includes two optical wedges, but this is not a limitation on the number of optical wedges. For example, see [reference]. Figure 10 The correction component 200 includes three optical wedges.

[0132] In this embodiment of the present disclosure, the calibration component 200 may be fixedly connected to the SAM lens 300 and form an integral part of the SAM lens 300; or, the calibration component 200 may be fixed to the light-incident surface side of the light-transmitting cover plate 120, thereby forming an integral part of the calibration component 200 and the image sensor 100; or, the calibration component 200 may be set independently of the SAM lens 300 and the image sensor 100.

[0133] In the SAM optical system of this embodiment, object-side light sequentially passes through the SAM lens 300, the correction component 200, and the light-transmitting cover plate 120 to be imaged onto the photosensitive chip 110. After the light is refracted by the light wedge 210, the optical path difference between the meridional beam and the sagittal beam in the light is reduced, which reduces the distance between the convergence point of the meridional beam and the convergence point of the sagittal beam, thereby correcting the astigmatism caused by the light-transmitting cover plate 120, improving the imaging quality of the SAM optical system, and thus improving the detection accuracy of the SAM optical system.

[0134] The Sham lens 300 of this disclosure has the characteristics of high resolution, high contrast, and low distortion. Specifically, the focal length f of the Sham lens 300 satisfies 50mm ≤ f ≤ 100mm, the aperture number Fno satisfies F1.2 ≤ Fno ≤ F6, and the field of view (FOV) satisfies 20mm ≤ FOV ≤ 150mm.

[0135] The target surface size IMG of the photosensitive chip 110 meets the requirement of 8mm≤IMG≤25mm, and the angle A4 between the light-transmitting cover plate 120 and the optical axis O meets the requirement of 20°≤A4≤70°.

[0136] The SAM lens 300 of this embodiment includes an aperture stop 310 and multiple lenses arranged coaxially from the object side to the image side. The aperture stop 310 has multiple lenses on the object side and multiple lenses on the image side. The number of lenses on the object side and the number of lenses on the image side are the same, which effectively reduces the optical distortion of the imaging system.

[0137] The SAM lens 300 of this embodiment includes a front lens group 1, a middle lens group 2, a rear lens group 3, and a correction component 200 arranged coaxially from the object side to the image side. The front lens group 1, the middle lens group 2, and the rear lens group 3 are each composed of at least one lens, which may include a double-splitter lens and a cemented lens; they may all be spherical lenses, all be aspherical lenses, or be composed of both spherical and aspherical lenses.

[0138] The Sham lens 300 of this embodiment includes a first lens G1, a second lens G2, a third lens G3, a fourth lens G4, a fifth lens G5, a sixth lens G6, a seventh lens G7, an eighth lens G8, a ninth lens G9, and a tenth lens G10 arranged coaxially from the object side to the image side; the aperture stop 310 is located between the fifth lens G5 and the sixth lens G6.

[0139] Among them, the first lens G1, the second lens G2, the third lens G3, the fourth lens G4 and the fifth lens G5 form the front lens group 1, the sixth lens G6, the seventh lens G7 and the eighth lens G8 form the middle lens group 2, and the ninth lens G9 and the tenth lens G10 form the rear lens group 3.

[0140] In this embodiment of the present disclosure, the first lens G1 is a biconvex lens with positive optical power, the second lens G2 is a convex-concave lens with positive optical power, the third lens G3 is a convex-concave lens with negative optical power, the fourth lens G4 is a convex-concave lens with negative optical power, the fifth lens G5 is a biconvex lens with negative optical power, the sixth lens G6 is a concave-plano lens with negative optical power, the seventh lens G7 is a plano-convex lens with positive optical power, the eighth lens G8 is a concave-convex lens with positive optical power, the ninth lens G9 is a concave-convex lens with positive optical power, and the tenth lens G10 is a convex-concave lens with positive optical power.

[0141] Each lens or lens group of the Sham lens 300 in this embodiment has its own unique functional focus, making the performance parameters of the Sham lens more excellent; each lens has a reasonable power distribution and material combination.

[0142] With the above configuration, the first lens G1 and the second lens G2 have positive optical power, which can converge the off-axis beam of light from the object surface while reducing the light path aperture, thereby achieving miniaturization of the optical path structure. The third lens G3 has negative optical power, and the fourth lens G4 has positive optical power. The combination of their positive and negative optical powers can quickly achieve the deflection of the light angle. The fifth lens G5 has negative optical power, allowing the light to enter the aperture stop 310 smoothly. The sixth lens G6 behind the aperture stop 310 has negative optical power, and the seventh lens G7 has positive optical power. Furthermore, the sixth lens G6 and the seventh lens G7 form a cemented lens with negative optical power, which diverges the light from the aperture stop 310 to the subsequent lenses. The eighth lens G8, the ninth lens G9, and the tenth lens G10 all have positive optical power. Through the allocation of optical power, each lens undertakes a certain convergence capability, reducing the degree of light refraction after passing through the lens, thereby reducing the system tolerance sensitivity. The embodiments disclosed herein, through the lens combination structure described above, can effectively balance and process various aberrations, thereby improving the imaging performance of the optical system. Furthermore, the ten lenses are approximately symmetrical in shape, effectively reducing system optical distortion.

[0143] In this embodiment of the present disclosure, the focal length fa of the front lens group 1 satisfies 60mm≤fa≤90mm, the focal length fb of the middle lens group 2 satisfies -200mm≤fb≤-100mm, and the focal length fc of the rear lens group 3 satisfies 20mm≤fc≤50mm.

[0144] The axial distance d12 between the front lens group 1 and the middle lens group 2 satisfies 2mm ≤ d12 ≤ 7mm, the axial distance d23 between the middle lens group 2 and the rear lens group 3 satisfies 3mm ≤ d23 ≤ 11mm, and the axial distance d34 between the rear lens group 3 and the correction component 200 satisfies 10mm ≤ d34 ≤ 50mm. Here, axial distance refers to the distance along the optical axis.

[0145] The lens and optical wedge in this embodiment can be made of colorless optical glass or optical plastic. Optical plastic is low-cost, easy to process into aspherical surfaces, and lightweight during mass production. Optical glass has stable mechanical and thermal properties, and chromatic aberration can be eliminated and image quality improved by combining different refractive indices and Abbe numbers. Industrial robots are used in diverse environments and require high environmental temperature stability.

[0146] In this embodiment, all lenses and optical wedges are made of glass, and all lenses are spherical lenses. Firstly, glass has higher transmittance and better imaging quality compared to plastic. Secondly, glass has far superior physical and chemical stability compared to plastic, allowing it to better adapt to various environments and have a longer lifespan. Furthermore, spherical glass lenses are less expensive than aspherical glass lenses.

[0147] In this embodiment, the radius of curvature R11 of the incident surface of the first lens G1 satisfies 30mm ≤ R11 ≤ 50mm, and the radius of curvature R12 of the exit surface satisfies -135mm ≤ R12 ≤ -115mm; the radius of curvature R21 of the incident surface of the second lens G2 satisfies 15mm ≤ R21 ≤ 35mm, and the radius of curvature R22 of the exit surface satisfies 25mm ≤ R22 ≤ 45mm; the radius of curvature R31 of the incident surface of the third lens G3 satisfies 2... For the fourth lens G4, the radius of curvature R41 of the incident surface satisfies 15mm≤R31≤40mm, and the radius of curvature R42 of the exit surface satisfies 15mm≤R32≤35mm; for the fifth lens G5, the radius of curvature R51 of the incident surface satisfies -75mm≤R51≤-50mm, and the radius of curvature R52 of the exit surface satisfies 20mm≤R31≤40mm. The radius of curvature R61 of the incident surface of the sixth lens G6 satisfies -30mm≤R61≤-10mm, and the radius of curvature R62 of the exit surface is infinite; the radius of curvature R71 of the incident surface of the seventh lens G7 is infinite, and the radius of curvature R72 of the exit surface satisfies -35mm≤R72≤-15mm; the radius of curvature R81 of the incident surface of the eighth lens G8 satisfies -130mm≤R81≤-60mm, and the radius of curvature R62 of the exit surface is infinite. The radius of curvature R82 of the ninth lens G9 satisfies -45mm ≤ R82 ≤ -25mm; the radius of curvature R91 of the incident surface of the ninth lens G9 satisfies -640mm ≤ R91 ≤ -430mm, and the radius of curvature R92 of the exit surface satisfies -50mm ≤ R92 ≤ -30mm; the radius of curvature R101 of the incident surface of the tenth lens G10 satisfies 40mm ≤ R101 ≤ 60mm, and the radius of curvature R102 of the exit surface satisfies 150mm ≤ R102 ≤ 170mm. The object-side surface of each lens is the incident surface, and the image-side surface is the exit surface.

[0148] In this embodiment, the center thickness GT1 of the first lens G1 satisfies 3mm ≤ GT1 ≤ 7mm; the center thickness GT2 of the second lens G2 satisfies 2mm ≤ GT2 ≤ 5mm; the center thickness GT3 of the third lens G3 satisfies 2mm ≤ GT3 ≤ 5mm; the center thickness GT4 of the fourth lens G4 satisfies 2mm ≤ GT4 ≤ 5mm; the center thickness GT5 of the fifth lens G5 satisfies 1mm ≤ GT5 ≤ 4mm; the center thickness GT6 of the sixth lens G6 satisfies 1mm ≤ GT6 ≤ 4mm; the center thickness GT7 of the seventh lens G7 satisfies 4mm ≤ GT7 ≤ 7mm; the center thickness GT8 of the eighth lens G8 satisfies 2mm ≤ GT8 ≤ 6mm; the center thickness GT9 of the ninth lens G9 satisfies 3mm ≤ GT9 ≤ 7mm; and the center thickness GT10 of the tenth lens G10 satisfies 3mm ≤ GT10 ≤ 6mm. Here, center thickness refers to the dimension of the lens center along the optical axis.

[0149] In this embodiment, the air gap AT1 between the first lens G1 and the second lens G2 along the optical axis satisfies 0mm ≤ AT1 ≤ 2mm; the air gap AT2 between the second lens G2 and the third lens G3 along the optical axis satisfies 0mm ≤ AT2 ≤ 4mm; the air gap AT3 between the third lens G3 and the fourth lens G4 along the optical axis satisfies 1mm ≤ AT3 ≤ 3mm; the air gap AT4 between the fourth lens G4 and the fifth lens G5 along the optical axis satisfies 1mm ≤ AT4 ≤ 3mm; and the air gap A between the fifth lens G5 and the aperture stop 310 along the optical axis satisfies 1mm ≤ AT4 ≤ 3mm. T5 satisfies 1mm ≤ AT5 ≤ 3mm; the air gap AT6 between aperture stop 310 and the sixth lens G6 along the optical axis satisfies 2mm ≤ AT6 ≤ 4mm; the sixth lens G6 and the seventh lens G7 are cemented lenses; the air gap AT7 between the seventh lens G7 and the eighth lens G8 along the optical axis satisfies 0mm ≤ AT7 ≤ 4mm; the air gap AT8 between the eighth lens G8 and the ninth lens G9 along the optical axis satisfies 4mm ≤ T8 ≤ 9mm; the air gap AT9 between the ninth lens G9 and the tenth lens G10 along the optical axis satisfies 0mm ≤ AT ≤ 2mm. The air gap BFL between the tenth lens G10 and the image plane of the photosensitive chip along the optical axis satisfies 40mm ≤ BFL ≤ 60mm.

[0150] Combination Figure 7 The air gap AT10 between the tenth lens G10 and the optical wedge W1 along the optical axis satisfies 15mm≤AT10≤40mm; the air gap AT11 between the optical wedge W1 and the optical wedge W2 along the optical axis satisfies 0mm≤AT11≤2mm; and the air gap AT12 between the optical wedge W2 and the image plane of the photosensitive chip along the optical axis satisfies 8mm≤AT12≤11mm.

[0151] In this embodiment, the focal length f1 of the first lens G1 satisfies 35mm≤f1≤45mm; the focal length f2 of the second lens G2 satisfies 80mm≤f2≤130mm; the focal length f3 of the third lens G3 satisfies -70mm≤f3≤-35mm; the focal length f4 of the fourth lens G4 satisfies 40mm≤f4≤70mm; the focal length f5 of the fifth lens G5 satisfies -25mm≤f5≤-15mm; the focal length f6 of the sixth lens G6 satisfies -25mm≤f6≤-15mm; the focal length f7 of the seventh lens G7 satisfies 35mm≤f7≤45mm; the focal length f8 of the eighth lens G8 satisfies 85mm≤f8≤105mm; the focal length f9 of the ninth lens G9 satisfies 45mm≤f9≤65mm; and the focal length f10 of the tenth lens G10 satisfies 80mm≤f10≤100mm.

[0152] In this embodiment, the focal length f1 of the first lens G1 and the focal length f of the Sham lens satisfy 0.5 < f1 / f < 2.5; the focal length f2 of the second lens G2 and the focal length f of the Sham lens satisfy 1 < f2 / f < 4; the focal length f3 of the third lens G3 and the focal length f of the Sham lens satisfy 0.5 < |f3 / f| < 2.5; the focal length f4 of the fourth lens G4 and the focal length f of the Sham lens satisfy 0.5 < f4 / f < 2.5; and the focal length f5 of the fifth lens G5 and the focal length f of the Sham lens satisfy 0.2 < |f5 / f|. f|<2; The focal length f6 of the sixth lens G6 and the focal length f of the Sham lens satisfy 0.2<|f6 / f|<2; The focal length f7 of the seventh lens G7 and the focal length f of the Sham lens satisfy 0.5<f7 / f<2.5; The focal length f8 of the eighth lens G8 and the focal length f of the Sham lens satisfy 1<f8 / f<3; The focal length f9 of the ninth lens G9 and the focal length f of the Sham lens satisfy 0.5<|f9 / f|<2.5; The focal length f10 of the tenth lens G10 and the focal length f of the Sham lens satisfy 1<f10 / f<3.

[0153] In this embodiment, the refractive index N1 of the first lens G1 satisfies 1.7≤N1≤1.8, and the Abbe number V1 satisfies 45≤V1≤50; the refractive index N2 of the second lens G2 satisfies 1.8≤N2≤1.9, and the Abbe number V2 satisfies 35≤V2≤40; the refractive index N3 of the third lens G3 satisfies 1.7≤N3≤1.8, and the Abbe number V3 satisfies 35≤V3≤40; the refractive index N4 of the fourth lens G4 satisfies 1.8≤N4≤1.9, and the Abbe number V4 satisfies 40≤V4≤45; the refractive index N5 of the fifth lens G5 satisfies 1.8≤N5≤1.9, and the Abbe number V5 satisfies 40≤V5≤45. 5; The refractive index N6 of the sixth lens G6 satisfies 1.7≤N6≤1.8, and the Abbe number V6 satisfies 25≤V6≤30; the refractive index N7 of the seventh lens G7 satisfies 1.5≤N7≤1.6, and the Abbe number V7 satisfies 80≤V7≤85; the refractive index N8 of the eighth lens G8 satisfies 1.5≤N8≤1.6, and the Abbe number V8 satisfies 80≤V8≤85; the refractive index N9 of the ninth lens G9 satisfies 1.7≤N9≤1.8, and the Abbe number V9 satisfies 50≤V9≤55; the refractive index N10 of the tenth lens G10 satisfies 1.7≤N10≤1.8, and the Abbe number V10 satisfies 50≤V10≤55. This embodiment of the present disclosure defines the material properties of each lens by limiting the refractive index and Abbe number of each lens.

[0154] Example 4

[0155] In this embodiment of the present disclosure, the correction component 200 includes two optical wedges, namely optical wedge W1 and optical wedge W2, and the two optical wedges have the same refractive index.

[0156] The SAM optical system of this disclosure includes a first lens G1, a second lens G2, a third lens G3, a fourth lens G4, a fifth lens G5, an aperture stop 310, a sixth lens G6, a seventh lens G7, an eighth lens G8, a ninth lens G9, a tenth lens G10, an optical wedge W1, an optical wedge W2, a light-transmitting cover plate, and a photosensitive chip, arranged coaxially from the object side to the image side.

[0157] The incident surface of the optical wedge W1 near the SAM lens is perpendicular to the optical axis O, and the angle A1 between the incident surface and the exit surface of the optical wedge W1 near the SAM lens satisfies 0°<A1≤3°; the incident surface of the optical wedge W2 near the image sensor is perpendicular to the optical axis O, and the angle A2 between the incident surface and the exit surface of the optical wedge W2 near the image sensor satisfies 0°<A1≤4°.

[0158] The center thickness WT1 of the optical wedge W1 near the Sham lens satisfies 1mm≤WT1≤4mm, and the center thickness WT2 of the optical wedge W2 near the image sensor satisfies 1mm≤WT2≤4mm.

[0159] The air gap AT01 between the optical wedge W1 near the SAM lens and the lens closest to the object side of the SAM lens (the tenth lens G10 shown in the attached figure) along the optical axis satisfies 15mm≤AT01≤40mm, and the air gap AT02 between the two optical wedges along the optical axis satisfies 0mm≤AT02≤10mm; the air gap AT03 between the optical wedge W2 near the image sensor and the image plane of the image sensor along the optical axis satisfies 9mm≤AT03≤11mm.

[0160] In this disclosed embodiment, the focal length f of the Sham lens satisfies 50mm≤f≤70mm, the aperture number Fno satisfies F1.7≤Fno≤F5, the working wavelength WL satisfies 390mm≤WL≤485mm, the total optical length TTL satisfies 90mm≤TTL≤130mm, and the back focal length BFL satisfies 30mm≤BFL≤80mm.

[0161] The target surface size IMG of the photosensitive chip meets the requirement of 8mm≤IMG≤11mm, and the angle A4 between the light-transmitting cover and the optical axis meets the requirement of 30°≤A4≤60°.

[0162] Among them, the focal length f of the SAM lens and the target surface size IMG of the image sensor satisfy 4 < f / IMG < 9.

[0163] In this embodiment of the disclosure, the focal length fa of the front lens group 1 satisfies 65mm≤fa≤80mm, the focal length fb of the middle lens group 2 satisfies -195mm≤fb≤-175mm, and the focal length fc of the rear lens group satisfies 30mm≤fc≤45mm.

[0164] The axial distance d12 between the front lens group 1 and the middle lens group 2 satisfies 3mm≤d12≤7mm, the axial distance d23 between the middle lens group 2 and the rear lens group 3 satisfies 7mm≤d23≤9mm, and the axial distance d34 between the rear lens group 3 and the correction component 200 satisfies 30mm≤d34≤40mm.

[0165] In this embodiment of the present disclosure, the focal length fa of the front lens group 1 and the focal length f of the SAM lens satisfy 0.7 < fa / f < 5; the focal length fb of the middle lens group 2 and the focal length f of the SAM lens satisfy 2 < |fb / f| < 5; and the focal length fc of the rear lens group 3 and the focal length f of the SAM lens satisfy 0.5 < fc / f < 1.5.

[0166] In this embodiment of the present disclosure, the axial distance d12 between the front lens group 1 and the middle lens group 2 and the axial distance d23 between the middle lens group 2 and the rear lens group 3 satisfy 0.2 < d12 / d23 < 1; the axial distance d23 between the middle lens group 2 and the rear lens group 3 and the axial distance d34 between the rear lens group 3 and the correction component 200 satisfy 0.15 < d23 / d34 < 0.4.

[0167] In this embodiment, the radius of curvature R11 of the incident surface of the first lens G1 satisfies 35mm ≤ R11 ≤ 45mm, and the radius of curvature R12 of the exit surface satisfies -125mm ≤ R12 ≤ -115mm; the radius of curvature R21 of the incident surface of the second lens G2 satisfies 20mm ≤ R21 ≤ 30mm, and the radius of curvature R22 of the exit surface satisfies 25mm ≤ R22 ≤ 35mm; the radius of curvature R31 of the incident surface of the third lens G3 satisfies 20mm ≤ R21 ≤ 30mm. The radius of curvature R32 of the exit surface of the fourth lens G4 satisfies 15mm≤R31≤30mm; the radius of curvature R41 of the incident surface of the fifth lens G5 satisfies 20mm≤R41≤30mm; the radius of curvature R42 of the exit surface satisfies 35mm≤R42≤45mm; the radius of curvature R51 of the incident surface of the fifth lens G5 satisfies -75mm≤R51≤-65mm; the radius of curvature R52 of the exit surface satisfies 20mm≤R51≤30mm. 2≤30mm; The radius of curvature R61 of the incident surface of the sixth lens G6 satisfies -20mm≤R61≤-10mm, and the radius of curvature R62 of the exit surface is infinite; The radius of curvature R71 of the incident surface of the seventh lens G7 is infinite, and the radius of curvature R72 of the exit surface satisfies -20mm≤R72≤-15mm; The radius of curvature R81 of the incident surface of the eighth lens G8 satisfies -140mm≤R81≤-130mm, and the radius of curvature R62 of the exit surface is infinite. R82 satisfies -40mm≤R82≤-30mm; the radius of curvature R91 of the incident surface of the ninth lens G9 satisfies -440mm≤R91≤-430mm, and the radius of curvature R92 of the exit surface satisfies -45mm≤R92≤-35mm; the radius of curvature R101 of the incident surface of the tenth lens G10 satisfies 45mm≤R101≤55mm, and the radius of curvature R102 of the exit surface satisfies 150mm≤R102≤160mm.

[0168] In this embodiment of the present disclosure, the sixth lens G6 and the seventh lens G7 are cemented lenses; the radius of curvature R61 of the incident surface of the sixth lens G6 and the radius of curvature R72 of the exit surface of the seventh lens G7 satisfy 0.5 < R61 / R72 < 3; and / or, the center thickness GT6 of the sixth lens G6 and the center thickness GT7 of the seventh lens G7 satisfy 0.3 < GT5 / GT6 < 2.

[0169] In this embodiment, the center thickness GT1 of the first lens G1 satisfies 4mm ≤ GT1 ≤ 7mm; the center thickness GT2 of the second lens G2 satisfies 2mm ≤ GT2 ≤ 5mm; the center thickness GT3 of the third lens G3 satisfies 2mm ≤ GT3 ≤ 5mm; the center thickness GT4 of the fourth lens G4 satisfies 2mm ≤ GT4 ≤ 5mm; the center thickness GT5 of the fifth lens G5 satisfies 1mm ≤ GT5 ≤ 4mm; the center thickness GT6 of the sixth lens G6 satisfies 1mm ≤ GT6 ≤ 4mm; the center thickness GT7 of the seventh lens G7 satisfies 4mm ≤ GT7 ≤ 7mm; the center thickness GT8 of the eighth lens G8 satisfies 2mm ≤ GT8 ≤ 5mm; the center thickness GT9 of the ninth lens G9 satisfies 3mm ≤ GT9 ≤ 7mm; and the center thickness GT10 of the tenth lens G10 satisfies 3mm ≤ GT10 ≤ 6mm.

[0170] In this embodiment, the air gap AT1 between the first lens G1 and the second lens G2 along the optical axis satisfies 0mm ≤ AT1 ≤ 2mm; the air gap AT2 between the second lens G2 and the third lens G3 along the optical axis satisfies 0mm ≤ AT2 ≤ 2mm; the air gap AT3 between the third lens G3 and the fourth lens G4 along the optical axis satisfies 1mm ≤ AT3 ≤ 3mm; the air gap AT4 between the fourth lens G4 and the fifth lens G5 along the optical axis satisfies 1mm ≤ AT4 ≤ 3mm; and the air gap AT5 between the fifth lens G5 and the aperture stop 310 along the optical axis satisfies 0mm ≤ AT1 ≤ 2mm. 5. The air gap AT6 between aperture stop 310 and sixth lens G6 along the optical axis satisfies 1mm≤AT5≤3mm; the air gap AT6 between sixth lens G6 and seventh lens G7 along the optical axis satisfies 2mm≤AT6≤4mm; sixth lens G6 and seventh lens G7 are cemented lenses; the air gap AT7 between seventh lens G7 and eighth lens G8 along the optical axis satisfies 0mm≤AT7≤2mm; the air gap AT8 between eighth lens G8 and ninth lens G9 along the optical axis satisfies 7mm≤AT8≤9mm; the air gap AT9 between ninth lens G9 and tenth lens G10 along the optical axis satisfies 0mm≤AT9≤2mm.

[0171] In this embodiment, the air gap AT01 between the tenth lens G10 and the optical wedge W1 along the optical axis satisfies 30mm≤AT01≤40mm; the air gap BFL between the tenth lens G10 and the image plane of the image sensor along the optical axis satisfies 45mm≤BFL≤55mm.

[0172] In this embodiment of the present disclosure, the air gap distance AT5 between the fifth lens G5 and the aperture stop 310 along the optical axis and the air gap distance AT6 between the aperture stop 310 and the sixth lens G6 along the optical axis satisfy 3 < AT5 + AT6 < 7.

[0173] In this embodiment of the disclosure, the air gap distance BFL between the tenth lens G10 and the image plane of the photosensitive chip along the optical axis satisfies 0.8 < BFL / TTL < 1.2 with respect to the total optical length TTL of the system.

[0174] In this embodiment, the focal length f1 of the first lens G1 satisfies 35mm≤f1≤45mm; the focal length f2 of the second lens G2 satisfies 120mm≤f2≤130mm; the focal length f3 of the third lens G3 satisfies -70mm≤f3≤-65mm; the focal length f4 of the fourth lens G4 satisfies 60mm≤f4≤70mm; the focal length f5 of the fifth lens G5 satisfies -25mm≤f5≤-15mm; the focal length f6 of the sixth lens G6 satisfies -25mm≤f6≤-15mm; the focal length f7 of the seventh lens G7 satisfies 35mm≤f7≤45mm; the focal length f8 of the eighth lens G8 satisfies 85mm≤f8≤95mm; the focal length f9 of the ninth lens G9 satisfies 55mm≤f9≤65mm; and the focal length f10 of the tenth lens G10 satisfies 90mm≤f10≤100mm.

[0175] In this embodiment, the focal length f1 of the first lens G1 and the focal length f of the Sham lens satisfy 0.5 < f1 / f < 2.5; the focal length f2 of the second lens G2 and the focal length f of the Sham lens satisfy 1.5 < f2 / f < 3.5; the focal length f3 of the third lens G3 and the focal length f of the Sham lens satisfy 0.5 < |f3 / f| < 2.5; the focal length f4 of the fourth lens G4 and the focal length f of the Sham lens satisfy 0.5 < f4 / f < 2.5; and the focal length f5 of the fifth lens G5 and the focal length f of the Sham lens satisfy 0.2 < |f1 / f| < 2.5. 5 / f|<2; The focal length f6 of the sixth lens G6 and the focal length f of the Sham lens satisfy 0.2<|f6 / f|<2; The focal length f7 of the seventh lens G7 and the focal length f of the Sham lens satisfy 0.5<f7 / f<2.5; The focal length f8 of the eighth lens G8 and the focal length f of the Sham lens satisfy 1<f8 / f<3; The focal length f9 of the ninth lens G9 and the focal length f of the Sham lens satisfy 0.5<|f9 / f|<2.5; The focal length f10 of the tenth lens G10 and the focal length f of the Sham lens satisfy 1<f10 / f<3.

[0176] In this embodiment, the refractive index N1 of the first lens G1 satisfies 1.7≤N1≤1.8, and the Abbe number V1 satisfies 45≤V1≤50; the refractive index N2 of the second lens G2 satisfies 1.8≤N2≤1.9, and the Abbe number V2 satisfies 35≤V2≤40; the refractive index N3 of the third lens G3 satisfies 1.7≤N3≤1.8, and the Abbe number V3 satisfies 35≤V3≤40; the refractive index N4 of the fourth lens G4 satisfies 1.8≤N4≤1.9, and the Abbe number V4 satisfies 40≤V4≤45; the refractive index N5 of the fifth lens G5 satisfies 1.8≤N5≤1.9, and the Abbe number V5 satisfies 40≤V5≤45. 5; The refractive index N6 of the sixth lens G6 satisfies 1.7≤N6≤1.8, and the Abbe number V6 satisfies 25≤V6≤30; the refractive index N7 of the seventh lens G7 satisfies 1.5≤N7≤1.6, and the Abbe number V7 satisfies 80≤V7≤85; the refractive index N8 of the eighth lens G8 satisfies 1.5≤N8≤1.6, and the Abbe number V8 satisfies 80≤V8≤85; the refractive index N9 of the ninth lens G9 satisfies 1.7≤N9≤1.8, and the Abbe number V9 satisfies 50≤V9≤55; the refractive index N10 of the tenth lens G10 satisfies 1.7≤N10≤1.8, and the Abbe number V10 satisfies 50≤V10≤55. This embodiment of the present disclosure defines the material properties of each lens by limiting the refractive index and Abbe number of each lens.

[0177] Combination Figure 7 The Sham lens structure shown has a simple structure and good machinability of lens and optical wedge while ensuring the size and volume of the lens optical path.

[0178] Combination Figure 11 The field curvature diagram shown has the field of view on the vertical axis and micrometers on the horizontal axis. Solid and dashed lines represent the meridional and sagittal components of the field curvature at different wavelengths within the operating band. Solid lines represent the meridional field curvature component, which is perpendicular to the optical axis; dashed lines represent the sagittal field curvature component, which is along the optical axis. The Schahm lens disclosed herein exhibits a field curvature value of less than 0.05 mm across the entire field of view, demonstrating excellent astigmatism correction capabilities.

[0179] Combination Figure 12 The distortion diagram shown has the field of view on the vertical axis and the distortion value on the horizontal axis. The optical distortion of the SAM lens disclosed in this invention is linear distortion, and the distortion value is less than 4%. Linear distortion can ensure that the entire imaging image can be well processed, increasing the accuracy of subsequent detection.

[0180] Figure 13 FFT (Fast Fourier Transform) MTF curves for the Schahm optical system without an optical wedge; Figure 14This is an FFT MTF curve of the Sham-Sham optical system with an optical wedge in this embodiment of the present disclosure. In the MTF curve, the horizontal axis represents spatial frequency in line pairs per millimeter (lp / mm), and the vertical axis represents contrast in the range of 0-1. The solid and dashed lines represent the meridional and sagittal components of the MTF under different fields of view. The solid line represents the contrast component in the meridional direction, which is perpendicular to the optical axis; the dashed line represents the contrast component in the sagittal direction, which is along the optical axis. (See attached diagram.) Figure 13 In the middle, the solid and dashed lines are spaced far apart, resulting in significant astigmatism across the entire field of view, with a large difference in image quality between the meridional and sagittal directions; combined with Figure 14 After adding the optical wedge, the interval between the solid and dashed lines is reduced, and the contrast ratio of the entire field of view MTF value at 70 lp / mm is greater than 0.5. It can be seen that the lens has high resolution and contrast after adding the optical wedge.

[0181] Figure 15 A simulated image frame of the Schahm optical system without an optical wedge; Figure 16 A simulated image frame diagram of the Schamm optical system provided in Embodiment 1 of this disclosure, in which an optical wedge is provided. In the simulated image frame diagram, the horizontal lines represent the meridional direction, and the vertical lines represent the sagittal direction. Figure 15 As shown, without an optical wedge, the sharpness of horizontal and vertical lines differs significantly, and the resolution and contrast in the sagittal and meridional directions differ considerably; combined with Figure 16 After adding the optical wedge, both the horizontal and vertical lines are clearer, and the imaging quality in the meridional and sagittal directions is similar, indicating that the optical wedge corrects astigmatism.

[0182] Combination Figure 17 The optical blur pattern of the Sham optical system provided in Embodiment 1 of this disclosure is shown, where OBJ is the object-side field of view and IMA is the image-side field of view, both in millimeters. RMS RADIUS and GEO RADIUS are in micrometers. As can be seen from the optical blur pattern: in the center field of view (referring to the parameters of the first field of view), RMS RADIUS is 2.356 μm and GEO RADIUS is 7.542 μm; in the edge field of view (referring to the parameters of the fourth field of view), RMS RADIUS is 5.653 μm and GEO RADIUS is 19.239 μm. The on-axis and off-axis point energy concentration and aberration correction are excellent, achieving ideal resolution.

[0183] Example 5

[0184] Combination Figure 8 and Figure 9 The correction component 200 of this embodiment includes a reflector M1, an optical wedge W1 and an optical wedge W2. The optical wedge W1 and the optical wedge W2 are the same as the optical wedge in Embodiment 5, and will not be described again here.

[0185] The SAM optical system of this disclosure includes a first lens G1, a second lens G2, a third lens G3, a fourth lens G4, a fifth lens G5, an aperture stop 310, a sixth lens G6, a seventh lens G7, an eighth lens G8, a ninth lens G9, a tenth lens G10, a reflector M1, an optical wedge W1, an optical wedge W2, a light-transmitting cover plate, and a photosensitive chip, arranged coaxially from the object side to the image side.

[0186] In this embodiment of the present disclosure, the reflector M1 forms a predetermined angle A with the optical axis before reflection, and the angle A3 satisfies 40°≤A3≤70°. Optionally, the angle A3 satisfies 40°≤A3≤60°.

[0187] The air gap AT01 between the reflector M1 and the lens closest to the object side of the Sham lens (i.e., the tenth lens G10) along the optical axis satisfies 15mm≤AT01≤25mm, and the air gap AT02 between the reflector M1 and its adjacent optical wedge W1 along the optical axis satisfies 10mm≤AT02≤20mm.

[0188] The optical wedge W2 and the air gap AT03 between the optical wedge W2 and the image plane of the image sensor along the optical axis in the embodiments of this disclosure satisfy 8mm≤AT03≤10mm.

[0189] In this embodiment of the disclosure, the focal length f of the Sham lens satisfies 45mm≤f≤55mm, the aperture number Fno satisfies F1.5≤Fno≤F3, the working wavelength WL satisfies 390mm≤WL≤485mm, the total optical length TTL satisfies 100mm≤TTL≤120mm, and the back focal length BFL satisfies 40mm≤BFL≤70mm.

[0190] The target surface size IMG of the photosensitive chip meets the requirement of 8mm≤IMG≤11mm, and the angle A4 between the light-transmitting cover and the optical axis meets the requirement of 35°≤A4≤55°.

[0191] In this embodiment of the disclosure, the focal length f of the SAM lens and the target surface size IMG of the image sensor satisfy 3.5 < f / IMG < 7.5.

[0192] In this embodiment of the present disclosure, the focal length fa of the front lens group 1 satisfies 70mm≤fa≤85mm, the focal length fb of the middle lens group 2 satisfies -140mm≤fb≤-120mm, and the focal length fc of the rear lens group 3 satisfies 25mm≤fc≤40mm.

[0193] The axial distance d12 between the front lens group 1 and the middle lens group 2 satisfies 3mm≤d12≤7mm, the axial distance d23 between the middle lens group 2 and the rear lens group 3 satisfies 4mm≤d23≤6mm, and the axial distance d34 between the rear lens group 3 and the correction component 200 satisfies 15mm≤d34≤25mm.

[0194] In this embodiment of the present disclosure, the focal length fa of the front lens group 1 and the focal length f of the SAM lens satisfy 1 < fa / f < 3; the focal length fb of the middle lens group 2 and the focal length f of the SAM lens satisfy 2 < |fb / f| < 4; and the focal length fc of the rear lens group 3 and the focal length f of the SAM lens satisfy 0.5 < fc / f < 2.

[0195] In this embodiment of the present disclosure, the axial distance d12 between the front lens group 1 and the middle lens group 2 and the axial distance d23 between the middle lens group 2 and the rear lens group 3 satisfy 0.5 < d12 / d23 < 2; the axial distance d23 between the middle lens group 2 and the rear lens group 3 and the axial distance d34 between the rear lens group 3 and the correction component 200 satisfy 0.1 < d23 / d34 < 0.6.

[0196] In this embodiment, the radius of curvature R11 of the incident surface of the first lens G1 satisfies 35mm ≤ R11 ≤ 45mm, and the radius of curvature R12 of the exit surface satisfies -130mm ≤ R12 ≤ -120mm; the radius of curvature R21 of the incident surface of the second lens G2 satisfies 20mm ≤ R21 ≤ 30mm, and the radius of curvature R22 of the exit surface satisfies 30mm ≤ R22 ≤ 40mm; the radius of curvature R31 of the incident surface of the third lens G3 satisfies 3... For the fourth lens G4, the radius of curvature of the incident surface R41 satisfies 20mm ≤ R41 ≤ 30mm, and the radius of curvature of the exit surface R42 satisfies 60mm ≤ R42 ≤ 70mm; for the fifth lens G5, the radius of curvature of the incident surface R51 satisfies -55mm ≤ R51 ≤ -45mm, and the radius of curvature of the exit surface R52 satisfies 25mm ≤ R31 ≤ 45mm. 52≤35mm; The radius of curvature R61 of the incident surface of the sixth lens G6 satisfies -20mm≤R61≤-10mm, and the radius of curvature R62 of the exit surface is infinite; The radius of curvature R71 of the incident surface of the seventh lens G7 is infinite, and the radius of curvature R72 of the exit surface satisfies -25mm≤R72≤-15mm; The radius of curvature R81 of the incident surface of the eighth lens G8 satisfies -70mm≤R81≤-60mm, and the radius of curvature R62 of the exit surface is infinite. R82 satisfies -35mm≤R82≤-25mm; the radius of curvature R91 of the incident surface of the ninth lens G9 satisfies -640mm≤R91≤-630mm, and the radius of curvature R92 of the exit surface satisfies -45mm≤R92≤-35mm; the radius of curvature R101 of the incident surface of the tenth lens G10 satisfies 40mm≤R101≤50mm, and the radius of curvature R102 of the exit surface satisfies 155mm≤R102≤165mm.

[0197] In this embodiment of the present disclosure, the sixth lens G6 and the seventh lens G7 are cemented lenses; the radius of curvature R61 of the incident surface of the sixth lens G6 and the radius of curvature R72 of the exit surface of the seventh lens G7 satisfy 0.5 < R61 / R72 < 2.

[0198] In this embodiment, the center thickness GT1 of the first lens G1 satisfies 3mm≤GT1≤6mm; the center thickness GT2 of the second lens G2 satisfies 2mm≤GT2≤5mm; the center thickness GT3 of the third lens G3 satisfies 2mm≤GT3≤5mm; the center thickness GT4 of the fourth lens G4 satisfies 2mm≤GT4≤5mm; the center thickness GT5 of the fifth lens G5 satisfies 1mm≤GT5≤3mm; the center thickness GT6 of the sixth lens G6 satisfies 1mm≤GT6≤3mm; the center thickness GT7 of the seventh lens G7 satisfies 4mm≤GT7≤7mm; the center thickness GT8 of the eighth lens G8 satisfies 3mm≤GT8≤6mm; the center thickness GT9 of the ninth lens G9 satisfies 4mm≤GT9≤7mm; and the center thickness GT10 of the tenth lens G10 satisfies 3mm≤GT10≤6mm.

[0199] The center thickness GT6 of the sixth lens G6 and the center thickness GT7 of the seventh lens G7 satisfy 0.2 < GT5 / GT6 < 1.

[0200] In this embodiment, the air gap AT1 between the first lens G1 and the second lens G2 along the optical axis satisfies 0mm ≤ AT1 ≤ 2mm; the air gap AT2 between the second lens G2 and the third lens G3 along the optical axis satisfies 2mm ≤ AT2 ≤ 4mm; the air gap AT3 between the third lens G3 and the fourth lens G4 along the optical axis satisfies 1mm ≤ AT3 ≤ 3mm; the air gap AT4 between the fourth lens G4 and the fifth lens G5 along the optical axis satisfies 1mm ≤ AT4 ≤ 3mm; and the air gap AT4 between the fifth lens G5 and the aperture stop 310 along the optical axis... The air gap distance AT5 satisfies 1mm ≤ AT5 ≤ 3mm; the air gap distance AT6 between aperture stop 310 and the sixth lens G6 along the optical axis satisfies 2mm ≤ AT6 ≤ 4mm; the air gap distance AT7 between the seventh lens G7 and the eighth lens G8 along the optical axis satisfies 2mm ≤ AT7 ≤ 4mm; the air gap distance AT8 between the eighth lens G8 and the ninth lens G9 along the optical axis satisfies 4mm ≤ AT8 ≤ 6mm; the air gap distance AT9 between the ninth lens G9 and the tenth lens G10 along the optical axis satisfies 0mm ≤ AT9 ≤ 2mm. The air gap distance BFL between the tenth lens G10 and the image plane of the image sensor along the optical axis satisfies 45mm ≤ BFL ≤ 55mm.

[0201] In this embodiment of the disclosure, the air gap distance BFL between the tenth lens G10 and the image plane of the photosensitive chip along the optical axis satisfies 0.9 < BFL / TTL < 1.3 with respect to the total optical length TTL of the system.

[0202] In this embodiment of the present disclosure, the air gap distance AT5 between the fifth lens G5 and the aperture stop 310 along the optical axis and the air gap distance AT6 between the aperture stop 310 and the sixth lens G6 along the optical axis satisfy 3 < AT5 + AT6 < 7.

[0203] In this embodiment, the focal length f1 of the first lens G1 satisfies 35mm≤f1≤45mm; the focal length f2 of the second lens G2 satisfies 85mm≤f2≤95mm; the focal length f3 of the third lens G3 satisfies -45mm≤f3≤-35mm; the focal length f4 of the fourth lens G4 satisfies 45mm≤f4≤55mm; the focal length f5 of the fifth lens G5 satisfies -25mm≤f5≤-15mm; the focal length f6 of the sixth lens G6 satisfies -25mm≤f6≤-15mm; the focal length f7 of the seventh lens G7 satisfies 35mm≤f7≤45mm; the focal length f8 of the eighth lens G8 satisfies 90mm≤f8≤100mm; the focal length f9 of the ninth lens G9 satisfies 50mm≤f9≤60mm; and the focal length f10 of the tenth lens G10 satisfies 85mm≤f10≤95mm.

[0204] In this embodiment, the focal length f1 of the first lens G1 and the focal length f of the Sham lens satisfy 0.5 < f1 / f < 2.5; the focal length f2 of the second lens G2 and the focal length f of the Sham lens satisfy 1 < f2 / f < 3; the focal length f3 of the third lens G3 and the focal length f of the Sham lens satisfy 0.5 < |f3 / f| < 2.5; the focal length f4 of the fourth lens G4 and the focal length f of the Sham lens satisfy 0.5 < f4 / f < 2.5; and the focal length f5 of the fifth lens G5 and the focal length f of the Sham lens satisfy 0.2 < |f5 / f|. f|<2; The focal length f6 of the sixth lens G6 and the focal length f of the Sham lens satisfy 0.2<|f6 / f|<2; The focal length f7 of the seventh lens G7 and the focal length f of the Sham lens satisfy 0.5<f7 / f<2.5; The focal length f8 of the eighth lens G8 and the focal length f of the Sham lens satisfy 1<f8 / f<3; The focal length f9 of the ninth lens G9 and the focal length f of the Sham lens satisfy 0.5<|f9 / f|<2.5; The focal length f10 of the tenth lens G10 and the focal length f of the Sham lens satisfy 1<f10 / f<3.

[0205] In this embodiment, the refractive index N1 of the first lens G1 satisfies 1.7 ≤ N1 ≤ 1.8, and the Abbe number V1 satisfies 45 ≤ V1 ≤ 50; the refractive index N2 of the second lens G2 satisfies 1.8 ≤ N2 ≤ 1.9, and the Abbe number V2 satisfies 35 ≤ V2 ≤ 40; the refractive index N3 of the third lens G3 satisfies 1.7 ≤ N3 ≤ 1.8, and the Abbe number V3 satisfies 35 ≤ V3 ≤ 40; the refractive index N4 of the fourth lens G4 satisfies 1.8 ≤ N4 ≤ 1.9, and the Abbe number V4 satisfies 40 ≤ V4 ≤ 45; the refractive index N5 of the fifth lens G5 satisfies 1.8 ≤ N5 ≤ 1.9, and the Abbe number V5 satisfies 40 ≤ V5 ≤ 1.9. 45; The refractive index N6 of the sixth lens G6 satisfies 1.7≤N6≤1.8, and the Abbe number V6 satisfies 25≤V6≤30; the refractive index N7 of the seventh lens G7 satisfies 1.5≤N7≤1.6, and the Abbe number V7 satisfies 80≤V7≤85; the refractive index N8 of the eighth lens G8 satisfies 1.5≤N8≤1.6, and the Abbe number V8 satisfies 80≤V8≤85; the refractive index N9 of the ninth lens G9 satisfies 1.7≤N9≤1.8, and the Abbe number satisfies 50≤V9≤55; the refractive index N10 of the tenth lens G10 satisfies 1.7≤N10≤1.8, and the Abbe number V10 satisfies 50≤V10≤55. This embodiment of the present disclosure defines the material properties of each lens by limiting the refractive index and Abbe number of each lens.

[0206] Combination Figure 8 and Figure 9 The Sham lens structure shown has a simple structure and good machinability of lens and optical wedge while ensuring the size and volume of the lens optical path.

[0207] Combination Figure 18 The field curvature diagram shown has the field of view on the vertical axis and micrometers on the horizontal axis. Solid and dashed lines represent the meridional and sagittal components of the field curvature at different wavelengths within the operating band. Solid lines represent the meridional field curvature component, which is perpendicular to the optical axis; dashed lines represent the sagittal field curvature component, which is along the optical axis. The Schahm lens disclosed herein exhibits a field curvature value of less than 0.05 mm across the entire field of view, demonstrating excellent astigmatism correction capabilities.

[0208] Combination Figure 19 The distortion diagram shown has the field of view on the vertical axis and the distortion value on the horizontal axis. The optical distortion of the SAM lens disclosed in this invention is linear distortion, and the distortion value is less than 5%. Linear distortion can ensure that the entire imaging image can be well processed, increasing the accuracy of subsequent detection.

[0209] Figure 20 FFT (Fast Fourier Transform) MTF curves for the Schahm optical system without an optical wedge; Figure 21This is an FFT MTF curve of the Sham-Sham optical system with an optical wedge in this embodiment of the present disclosure. In the MTF curve, the horizontal axis represents spatial frequency in line pairs per millimeter (lp / mm), and the vertical axis represents contrast in the range of 0-1. The solid and dashed lines represent the meridional and sagittal components of the MTF under different fields of view. The solid line represents the contrast component in the meridional direction, which is perpendicular to the optical axis; the dashed line represents the contrast component in the sagittal direction, which is along the optical axis. (See attached diagram.) Figure 20 In the middle, the solid and dashed lines are spaced far apart, resulting in significant astigmatism across the entire field of view, with a large difference in image quality between the meridional and sagittal directions; combined with Figure 21 After adding the optical wedge, the interval between the solid and dashed lines is reduced, and the contrast ratio of the entire field of view MTF value at 70 lp / mm is greater than 0.5. It can be seen that the lens has high resolution and contrast after adding the optical wedge.

[0210] Figure 22 A simulated image frame of the Schahm optical system without an optical wedge; Figure 23 A simulated image frame diagram of the Schamm optical system provided in Embodiment 2 of this disclosure, in which an optical wedge is provided. In the simulated image frame diagram, the horizontal lines represent the meridional direction, and the vertical lines represent the sagittal direction. Figure 2 As shown, without an optical wedge, the sharpness of horizontal and vertical lines differs significantly, and the resolution and contrast in the sagittal and meridional directions differ considerably; combined with Figure 23 After adding the optical wedge, both the horizontal and vertical lines are clearer, and the imaging quality in the meridional and sagittal directions is similar, indicating that the optical wedge corrects astigmatism.

[0211] Combination Figure 24 The optical blur pattern of the Sham optical system provided in Embodiment 2 of this disclosure is shown, where OBJ is the object-side field of view and IMA is the image-side field of view, both in millimeters. RMS RADIUS and GEO RADIUS are in micrometers. As can be seen from the optical blur pattern: in the center field of view (referring to the parameters of the first field of view), RMS RADIUS is 1.921 μm and GEO RADIUS is 5.321 μm; in the edge field of view (referring to the parameters of the fourth field of view), RMS RADIUS is 5.623 μm and GEO RADIUS is 18.200 μm. The on-axis and off-axis point energy concentration and aberration correction are excellent, achieving ideal resolution.

[0212] The Sham optical system of this disclosure not only has low distortion, high resolution and high contrast, but also reduces the size of the Sham optical system by setting an optical wedge to correct the astigmatism caused by the tilted light-transmitting cover plate and by setting a reflector to deflect the optical path.

[0213] Example 6

[0214] Figure 25 This is a schematic diagram of the structure of the Sham optical system provided in Embodiment 3 of this disclosure.

[0215] The difference between the Sham optical system of this embodiment and the Sham optical system shown in Embodiment 5 lies in the structure of the Sham lens.

[0216] The Sham lens of this disclosure embodiment has the following parameters:

[0217] Table 1

[0218] Focal length f / mm Aperture number Fno Field of view (FOV / mm) target surface / mm Angle A4 45～100 F1.2~F6 20～150 8～25 20°～70°

[0219] Table 2

[0220] Lens group name Focal length / mm Axial distance from the next lens group / mm Front lens group 1 20～90 8～11 Middle lens group 2 -200～-50 0.2～11 Rear lens group 3 20～50 10～50 Correction component 200

[0221] Wherein, the included angle A4 is the angle between the light-transmitting cover plate 120 and the optical axis O. The axial spacing is the air gap along the optical axis direction; when multiple optical wedges 210 are provided, the axial spacing d34 between the rear lens group 33 and one of the optical wedges closest to the Sham lens satisfies 10mm≤d34≤50mm. In the table above, the range indicated by "~" includes the endpoint values.

[0222] In this disclosed embodiment, the focal length f of the Sham lens satisfies 45mm≤f≤60mm, the aperture number Fno satisfies F1.5≤Fno≤F3, the working wavelength WL satisfies 390mm≤WL≤485mm, the total optical length TTL satisfies 70mm≤TTL≤120mm, and the back focal length BFL satisfies 25mm≤BFL≤70mm.

[0223] The target surface size IMG of the photosensitive chip meets the requirement of 8mm≤IMG≤11mm, and the angle A4 between the light-transmitting cover plate 120 and the optical axis O meets the requirement of 20°≤A4≤70°.

[0224] Among them, the focal length f of the SAM lens and the target surface size IMG of the image sensor satisfy 8 < f / IMG < 16.

[0225] like Figure 25 As shown, the SAM lens of this embodiment includes a first lens G1, a second lens G2, a third lens G3, a fourth lens G4, a fifth lens G5, a sixth lens G6, a seventh lens G7, an eighth lens G8, and a ninth lens G9 arranged coaxially from the object side to the image side; the aperture stop 310 is located between the fourth lens G4 and the fifth lens G5; the first lens G1 is the lens closest to the object side, and the ninth lens G9 is the lens closest to the image side.

[0226] Among them, the first lens G1, the second lens G2, the third lens G3 and the fourth lens G4 form the front lens group 1, the fifth lens G5, the sixth lens G6 and the seventh lens G7 form the middle lens group 2, and the eighth lens G8 and the ninth lens G9 form the rear lens group 3.

[0227] The focal length fa of the front lens group 1 satisfies 25mm ≤ fa ≤ 50mm, and the focal length fb of the middle lens group 2 satisfies -70mm ≤ fb ≤

[0228] -50mm, the focal length fc of the rear lens group 3 satisfies 20mm≤fc≤40mm;

[0229] The axial distance d12 between the front lens group 1 and the middle lens group 2 satisfies 10mm≤d12≤12mm, the axial distance d23 between the middle lens group 2 and the rear lens group 3 satisfies 0.4mm≤d23≤2mm, and the axial distance d34 between the rear lens group 3 and the correction component satisfies 20mm≤d34≤40mm.

[0230] Specifically, the focal length fa of the front lens group 1 and the focal length f of the Sham lens satisfy 0.4 < fa / f < 2; the focal length fb of the middle lens group 2 and the focal length f of the Sham lens satisfy 0.5 < |fb / f| < 2; and the focal length fc of the rear lens group 3 and the focal length f of the Sham lens satisfy 0.3 < fc / f < 2. The axial distance d12 between the front lens group 1 and the middle lens group 2, and the axial distance d23 between the middle lens group 2 and the rear lens group 3 satisfy 5 < d12 / d23 < 30; and the axial distance d23 between the middle lens group 2 and the rear lens group 3, and the axial distance d34 between the rear lens group 3 and the correction group satisfy 0.01 < d23 / d34 < 0.1.

[0231] The first lens G1 is a biconvex lens with positive optical power; the second lens G2 is a convex-concave lens with positive optical power; the third lens G3 is a convex-concave lens with positive optical power; the fourth lens G4 is a convex-concave lens with negative optical power; the fifth lens G5 is a concave-plano lens with negative optical power; the sixth lens G6 is a plano-concave lens with positive optical power; the fifth lens G5 and the sixth lens G6 are cemented lenses with negative optical power; the seventh lens G7 is a concave-convex lens with positive optical power; the eighth lens G8 is a plano-convex lens with positive optical power; and the ninth lens G9 is a convex-concave lens with positive optical power.

[0232] With the above configuration, the first lens G1 and the second lens G2 have positive optical power, which can converge the off-axis beam of light from the object surface while reducing the light path aperture, thereby achieving miniaturization of the optical path structure. The third lens G3 has positive optical power and the fourth lens G4 has negative optical power. The combination of their positive and negative optical powers can quickly achieve the deflection of the light angle, allowing the light to enter the aperture stop 310 smoothly. The fifth lens G5 behind the aperture stop 310 has negative optical power, and the sixth lens G6 has positive optical power. The cemented lens composed of the fifth lens G5 and the sixth lens G6 has negative optical power, which diverges the light from the aperture stop 310 to the subsequent lenses. The seventh lens G7, the eighth lens G8, and the ninth lens G9 all have positive optical power. Through the distribution of optical power, each lens undertakes a certain converging ability, reducing the degree of refraction of light after passing through the lens, thereby reducing the system tolerance sensitivity.

[0233] The embodiments of this disclosure, through the lens combination structure described above, can effectively balance and process various aberrations, thereby improving the imaging performance of the optical system. Furthermore, in the Sham lens aperture stop 310 of the embodiments of this disclosure, the difference in the number of front and rear lenses is within one, and their quantity and shape are approximately symmetrical, effectively reducing system optical distortion.

[0234] In this embodiment, all lenses and optical wedges are made of glass, and all lenses are spherical lenses. Firstly, glass has higher transmittance and better imaging quality compared to plastic. Secondly, glass has far superior physical and chemical stability compared to plastic, allowing it to better adapt to various environments and have a longer lifespan. Furthermore, spherical glass lenses are less expensive than aspherical glass lenses.

[0235] In this embodiment, the radius of curvature R11 of the incident surface of the first lens G1 satisfies 50mm ≤ R11 ≤ 60mm, and the radius of curvature R12 of the exit surface satisfies -65mm ≤ R12 ≤ -55mm; the radius of curvature R21 of the incident surface of the second lens G2 satisfies 20mm ≤ R21 ≤ 30mm, and the radius of curvature R22 of the exit surface satisfies 75mm ≤ R22 ≤ 85mm; the radius of curvature R31 of the incident surface of the third lens G3 satisfies 15mm ≤ R31 ≤ 25mm, and the radius of curvature R32 of the exit surface satisfies 45mm ≤ R32 ≤ 55mm; the radius of curvature R41 of the incident surface of the fourth lens G4 satisfies 75mm ≤ R41 ≤ 85mm, and the radius of curvature R12 of the exit surface satisfies -65mm ≤ R12 ≤ -55mm. The radius R42 of the fifth lens G5 satisfies 5mm ≤ R42 ≤ 15mm; the radius of curvature R51 of the incident surface of the fifth lens G5 satisfies -15mm ≤ R51 ≤ -5mm, and the radius of curvature R52 of the exit surface is infinite; the radius of curvature R61 of the incident surface of the sixth lens G6 is infinite, and the radius of curvature R62 of the exit surface satisfies -25mm ≤ R51 ≤ -15mm; the radius of curvature R71 of the incident surface of the seventh lens G7 satisfies -35mm ≤ R51 ≤ -25mm, and the radius of curvature R72 of the exit surface satisfies -25mm ≤ R72 ≤ -15mm; the radius of curvature R81 of the incident surface of the eighth lens G8 is infinite, and the radius of curvature R82 of the exit surface satisfies -35mm ≤ R82 ≤

[0236] -25mm; The radius of curvature R91 of the incident surface of the ninth lens G9 satisfies 30mm≤R91≤40mm, and the radius of curvature R92 of the exit surface satisfies 115mm≤R92≤125mm.

[0237] Among them, the radius of curvature R51 of the incident surface of the fifth lens G5 and the radius of curvature R62 of the exit surface of the sixth lens G6 satisfy 0.2 < R51 / R62 < 1.

[0238] In this embodiment, the center thickness GT1 of the first lens G1 satisfies 3mm ≤ GT1 ≤ 6mm; the center thickness GT2 of the second lens G2 satisfies 2mm ≤ GT2 ≤ 5mm; the center thickness GT3 of the third lens G3 satisfies 2mm ≤ GT3 ≤ 5mm; the center thickness GT4 of the fourth lens G4 satisfies 2mm ≤ GT4 ≤ 5mm; the center thickness GT5 of the fifth lens G5 satisfies 1mm ≤ GT5 ≤ 3mm; the center thickness GT6 of the sixth lens G6 satisfies 2mm ≤ GT6 ≤ 5mm; the center thickness GT7 of the seventh lens G7 satisfies 3mm ≤ GT7 ≤ 6mm; and the center thickness GT8 of the eighth lens G8 satisfies 3mm ≤ GT8 ≤ 6mm.

[0239] 6mm; the center thickness GT9 of the ninth lens G9 satisfies 3mm≤GT9≤6mm. Here, the center thickness is the thickness of the lens along the optical axis.

[0240] Among them, the center thickness GT5 of the fifth lens G5 and the center thickness GT6 of the sixth lens G6 satisfy 0.2 < GT5 / GT6 < 1.5.

[0241] In this embodiment, the air gap AT1 between the first lens G1 and the second lens G2 along the optical axis satisfies 0mm ≤ AT1 ≤ 2mm; the air gap AT2 between the second lens G2 and the third lens G3 along the optical axis satisfies 0mm ≤ AT2 ≤ 2mm; the air gap AT3 between the third lens G3 and the fourth lens G4 along the optical axis satisfies 0mm ≤ AT3 ≤ 2mm; the air gap AT4 between the fourth lens G4 and the aperture stop 310 along the optical axis satisfies 1mm ≤ AT4 ≤ 3mm; the aperture stop 310... The air gap AT5 between lens G10 and the fifth lens G5 along the optical axis satisfies 7mm ≤ AT5 ≤ 9mm; lens G5 and lens G6 are cemented lenses; the air gap AT6 between lens G6 and the seventh lens G7 along the optical axis satisfies 0mm ≤ AT6 ≤ 2mm; the air gap AT7 between lens G7 and the eighth lens G8 along the optical axis satisfies 0mm ≤ AT7 ≤ 2mm; the air gap AT8 between lens G8 and the ninth lens G9 along the optical axis satisfies 0mm ≤ AT8 ≤ 2mm. The air gap BFL between lens G9 and the image plane of the image sensor along the optical axis satisfies 25mm ≤ BFL ≤ 70mm.

[0242] The air gap AT01 between the optical wedge W1 near the SAM lens and the lens closest to the object side of the SAM lens (the ninth lens G9 shown in the attached figure) along the optical axis satisfies 5mm≤AT01≤20mm, and the air gap AT02 between the two optical wedges along the optical axis satisfies 0mm≤AT02≤2mm; the air gap AT03 between the optical wedge W2 near the image sensor and the image plane of the image sensor along the optical axis satisfies 5mm≤AT03≤20mm.

[0243] The air gap BFL between the ninth lens G9 and the image plane of the image sensor along the optical axis and the total optical length TTL of the Schahm optical system satisfy 0.9 < BFL / TTL < 1.3.

[0244] In this embodiment of the present disclosure, the focal length f1 of the first lens G1 satisfies 55mm≤f1≤65mm; the focal length f2 of the second lens G2 satisfies 40mm≤f2≤50mm; the focal length f3 of the third lens G3 satisfies 40mm≤f3≤50mm; the focal length f4 of the fourth lens G4 satisfies -25mm≤f4≤-15mm; the focal length f5 of the fifth lens G5 satisfies -20mm≤f5≤-10mm; the focal length f6 of the sixth lens G6 satisfies 25mm≤f6≤35mm; the focal length f7 of the seventh lens G7 satisfies 65mm≤f7≤75mm; the focal length f8 of the eighth lens G8 satisfies 35mm≤f8≤45mm; and the focal length f9 of the ninth lens G9 satisfies 55mm≤f9≤65mm.

[0245] In this embodiment, the focal length f1 of the first lens G1 and the focal length f of the Sham lens satisfy 0.5 < f1 / f < 2; the focal length f2 of the second lens G2 and the focal length f of the Sham lens satisfy 0.5 < f2 / f < 2.5; the focal length f3 of the third lens G3 and the focal length f of the Sham lens satisfy 0.5 < f3 / f < 2.5; the focal length f4 of the fourth lens G4 and the focal length f of the Sham lens satisfy 3 < f4 / f < 5; the focal length f5 of the fifth lens G5 and the focal length f of the Sham lens satisfy 0.5 < f1 ...1 of the second lens G2 and the focal length f of the Sham lens satisfy 0.5 < f1 / f < 2.5; the focal length f4 of the fifth lens G2 and the focal length f of the Sham lens satisfy 0.5 < f1 / f < 2.5; the focal length f4 of the fourth lens G4 and the focal length f of the Sham lens satisfy 3 < f4 / f < 5; the focal length f5 of the fifth lens G5 and the focal length f of the Sham lens satisfy 0.5 < f1 / f < 2.5; the focal length f1 of the second lens G2 and the focal length f of the Sham lens satisfy 0.5 < f1 / f < 2.5; the focal length f4 of the The following conditions must be met for the focal lengths f: 0.1 < |f5 / f| < 2; the following conditions must be met for the focal lengths f of the sixth lens G6 and the Sham lens: 0.2 < |f6 / f| < 2; the following conditions must be met for the focal lengths f of the seventh lens G7 and the Sham lens: 0.5 < f7 / f < 2.5; the following conditions must be met for the focal lengths f of the eighth lens G8 and the Sham lens: 0.5 < f8 / f < 2.5; and the following conditions must be met for the focal lengths f of the ninth lens G9 and the Sham lens: 0.5 < f9 / f < 2.5.

[0246] In this embodiment, the refractive index N1 of the first lens G1 satisfies 1.5≤N1≤1.6, and the Abbe number V1 satisfies 80≤V1≤85; the refractive index N2 of the second lens G2 satisfies 1.7≤N2≤1.8, and the Abbe number V2 satisfies 50≤V2≤55; the refractive index N3 of the third lens G3 satisfies 1.7≤N3≤1.8, and the Abbe number V3 satisfies 45≤V3≤50; the refractive index N4 of the fourth lens G4 satisfies 1.6≤N4≤1.7, and the Abbe number V4 satisfies 30≤V4≤35; and the refractive index N5 of the fifth lens G5 satisfies 1. The refractive index of the sixth lens G6 is 1.6 ≤ N5 ≤ 1.9, and the Abbe number V5 satisfies 25 ≤ V5 ≤ 30; the refractive index of the seventh lens G7 is 1.8 ≤ N7 ≤ 1.9, and the Abbe number V7 satisfies 40 ≤ V7 ≤ 45; the refractive index of the eighth lens G8 is 1.7 ≤ N8 ≤ 1.8, and the Abbe number V8 satisfies 50 ≤ V8 ≤ 55; the refractive index of the ninth lens G9 is 1.8 ≤ N9 ≤ 1.9, and the Abbe number V9 satisfies 40 ≤ V9 ≤ 45.

[0247] Combination Figure 25 The Sham lens structure shown has a simple structure and good machinability of lens and optical wedge while ensuring the size and volume of the lens optical path.

[0248] Combination Figure 26 The field curvature diagram shown indicates that the Schamm lens of this disclosure has a field curvature of less than 0.05 mm across the entire field of view, demonstrating excellent astigmatism correction capabilities.

[0249] Combination Figure 27 The distortion diagram shown indicates that the optical distortion value of the Sham lens disclosed herein is less than 1%.

[0250] Figure 28 The FFT (Fast Fourier Transform) MTF curve of the EM optical system without a wedge is shown. The solid and dashed lines are spaced far apart, indicating significant astigmatism across the entire field of view, with a large difference in image quality between the meridional and sagittal directions. Figure 29 The image shows the FFT MTF curve of the Sham Sham optical system with an optical wedge in this embodiment. After adding the optical wedge, the interval between the solid and dashed lines decreases, and the contrast of the MTF value at 70 lp / mm is greater than 0.5 throughout the field of view. It can be seen that the lens has high resolution and contrast after adding the optical wedge.

[0251] Depend on Figure 30 and Figure 31 As shown in the simulated image frame diagram, without the optical wedge, the sharpness of the horizontal and vertical lines differs significantly, and the resolution and contrast in the sagittal and meridional directions differ considerably. After the optical wedge is added, both the horizontal and vertical lines are relatively clear, and the imaging quality in the meridional and sagittal directions is similar, indicating that the optical wedge corrects for astigmatism.

[0252] according to Figure 32 The optical blur pattern shown shows that, in the central field of view (refer to the parameters of the first field of view), the RMS RADIUS is 4.256 μm and the GEO RADIUS is 12.059 μm; in the peripheral field of view (refer to the parameters of the second field of view), the RMS RADIUS is 8.404 μm and the GEO RADIUS is 27.098 μm. The energy concentration and aberration correction at both on-axis and off-axis points are excellent, achieving ideal resolution.

[0253] Therefore, the Sham optical system of this disclosure has low distortion, high resolution, and high contrast, while also improving astigmatism correction capability and reducing the size of the Sham optical system.

[0254] Example 7

[0255] This disclosure also provides an electronic device, which includes a sensor module of Embodiment 1 or Embodiment 2, or a Sham optical system of any one of Embodiments 3 to 6.

[0256] In some embodiments, the electronic device is a 3D camera. Line laser profilometry is a technique that uses a laser source to emit a line laser and illuminate the surface of the target to be measured. The 3D camera determines the contour of the target surface by obtaining the laser reflected back from the target surface. It has the advantages of high accuracy, high speed, and high stability.

[0257] The sensor module or SAM optical system provided in this embodiment has the same structure, function and effect as the above embodiments. For details, please refer to the above embodiments, and will not be repeated here.

[0258] In the above description, the use of terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refers to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0259] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit them. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this disclosure.

Claims

1. A sensor module applied to a SAM optical path, characterized in that, It includes a photosensitive chip, a light-transmitting cover plate, and a correction component. The light-transmitting cover plate is arranged parallel to the front side of the photosensitive chip, and the correction component is arranged on the side of the light-transmitting cover plate opposite to the photosensitive chip. The correction component includes at least one optical wedge, the incident surface and the exit surface of the optical wedge are both planes, and there is a preset angle between the incident surface and the exit surface of the optical wedge; The object-side light is imaged onto the photosensitive chip via the correction component and the light-transmitting cover plate; The object-side light rays are imaged onto the photosensitive chip via the correction component and the light-transmitting cover plate, and the difference dv between the meridional component and the sagittal component of the modulation transfer function at the Nyquist frequency of each field of view satisfies 0≤dv≤0.4; The distance between the incident surface and the exit surface of the optical wedge is the thickness of the optical wedge, and the thickness of the optical wedge gradually increases or decreases along a preset direction; One of the incident surface and the exit surface of the light wedge is perpendicular to the optical axis, and the other of the incident surface and the exit surface of the light wedge is not perpendicular to the optical axis, so that the incident surface and the exit surface of the light wedge have the preset angle.

2. The sensor module according to claim 1, characterized in that, The correction component includes a plurality of optical wedges, which are arranged sequentially along the optical axis of the Sham optical path, and the refractive index of the plurality of optical wedges is the same; the sum of the thicknesses of the plurality of optical wedges gradually increases or decreases along the preset direction.

3. The sensor module according to claim 1, characterized in that, The correction component includes a plurality of optical wedges arranged sequentially along the optical axis of the Sham optical path, wherein the refractive index of at least one optical wedge is different from that of the other optical wedges, so that the difference dv between the meridional component and the sagittal component of the modulation transfer function of each field of view at the Nyquist frequency of the photosensitive chip satisfies 0 ≤ dv ≤ 0.

4.

4. The sensor module according to any one of claims 1-3, characterized in that, The correction component also includes a reflector, which forms a set angle with the optical axis before reflection; the reflector is located on the side of the optical wedge away from the light-transmitting cover plate; The correction component, the light-transmitting cover plate, and the photosensitive chip are arranged sequentially along the reflected optical axis.

5. A Schamm optical system, characterized in that, include: A SAM lens, a correction component, and a light-transmitting cover are arranged sequentially from the object side to the image side along the optical axis. The object-side light rays pass sequentially through the SAM lens, the correction component, and the light-transmitting cover. The SAM lens includes at least one lens, and the correction component includes at least one optical wedge, wherein the incident surface and the exit surface of the optical wedge are both planes, and there is a preset angle between the incident surface and the exit surface of the optical wedge; The Sham optical system further includes a photosensitive chip arranged along the optical axis, and a light-transmitting cover plate arranged parallel to the photosensitive chip; object-side light rays are imaged onto the photosensitive chip via the Sham lens, the correction component, and the light-transmitting cover plate, and the difference dv between the meridional component and the sagittal component of the modulation transfer function of each field of view at the Nyquist frequency of the photosensitive chip satisfies 0≤dv≤0.4; The distance between the incident surface and the exit surface of the optical wedge is the thickness of the optical wedge, and the thickness of the optical wedge gradually increases or decreases along a preset direction; One of the incident surface and the exit surface of the light wedge is perpendicular to the optical axis, and the other of the incident surface and the exit surface of the light wedge is not perpendicular to the optical axis, so that the incident surface and the exit surface of the light wedge have the preset angle.

6. The Schamm optical system according to claim 5, characterized in that, The correction component includes a plurality of optical wedges, which are arranged sequentially along the optical axis and have the same refractive index; the sum of the thicknesses of the plurality of optical wedges gradually increases or decreases along the preset direction.

7. The Schamm optical system according to claim 6, characterized in that, The correction component includes two optical wedges, and the two optical wedges have the same refractive index; The incident surface of the light wedge near the Sham lens is perpendicular to the optical axis, and the angle A1 between the incident and exit surfaces of the light wedge near the Sham lens satisfies 0° < A1 ≤ 3°; the incident surface of the light wedge near the photosensitive chip is perpendicular to the optical axis, and the angle A2 between the incident and exit surfaces of the light wedge near the photosensitive chip satisfies 0° < A1 ≤ 4°; and / or, The center thickness WT1 of the optical wedge near the SAM lens satisfies 1mm ≤ WT1 ≤ 4mm, and the center thickness WT2 of the optical wedge near the photosensitive chip satisfies 1mm ≤ WT2 ≤ 4mm; and / or, The air gap AT01 between the optical wedge near the SAM lens and the lens closest to the object side of the SAM lens along the optical axis satisfies 15mm≤AT01≤40mm, and the air gap AT02 between the two optical wedges along the optical axis satisfies 0mm≤AT02≤10mm; the air gap AT03 between the optical wedge near the photosensitive chip and the image plane of the photosensitive chip along the optical axis satisfies 9mm≤AT03≤11mm.

8. The Schamm optical system according to claim 7, characterized in that, The correction component includes a plurality of optical wedges arranged sequentially along the optical axis, wherein the refractive index of at least one optical wedge is different from that of the other optical wedges, so that the difference dv between the meridional component and the sagittal component of the modulation transfer function of each field of view at the Nyquist frequency of the photosensitive chip satisfies 0 ≤ dv ≤ 0.

4.

9. The Schamm optical system according to claim 5, characterized in that, The correction component also includes a reflector, which forms a set angle with the optical axis before reflection; the reflector is located between the Sham lens and the correction component. The correction component and the light-transmitting cover are arranged sequentially along the reflected optical axis.

10. The Schamm optical system according to claim 9, characterized in that, The angle A3 of the set included angle satisfies 40°≤A3≤70°; and / or, The air gap AT01 between the reflector and the lens closest to the object side of the SAM lens along the optical axis satisfies 15mm≤AT01≤25mm, and the air gap AT02 between the reflector and the adjacent optical wedge along the optical axis satisfies 10mm≤AT02≤20mm.

11. The Schamm optical system according to any one of claims 5-10, characterized in that, The correction component is fixedly connected to the Sham lens; or, the correction component is fixed to the light-incident surface of the light-transmitting cover.

12. The Schamm optical system according to any one of claims 5-10, characterized in that, The focal length f of the Sham lens satisfies 45mm≤f≤100mm, the aperture number Fno satisfies F1.2≤Fno≤F6, and the field of view FOV satisfies 20mm≤FOV≤150mm; The angle A4 between the light-transmitting cover and the optical axis satisfies 20°≤A4≤70°.

13. The Schamm optical system according to any one of claims 5-10, characterized in that, The SAM lens includes an aperture stop and multiple lenses arranged coaxially from the object side to the image side. The aperture stop has multiple lenses on the object side and multiple lenses on the image side. The number of lenses on the object side and the number of lenses on the image side of the aperture stop differ by no more than one.

14. The Schamm optical system according to claim 13, characterized in that, The SAM lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, and a tenth lens arranged coaxially from the object side to the image side; the aperture stop is located between the fifth lens and the sixth lens; The first lens, the second lens, the third lens, the fourth lens, and the fifth lens form the front lens group; the sixth lens, the seventh lens, and the eighth lens form the middle lens group; and the ninth lens and the tenth lens form the rear lens group.

15. The Schamm optical system according to claim 14, characterized in that, The first lens is a biconvex lens with positive optical power; the second lens is a convex-concave lens with positive optical power; the third lens is a convex-concave lens with negative optical power; the fourth lens is a convex-concave lens with negative optical power; the fifth lens is a biconvex lens with negative optical power; the sixth lens is a concave-plano lens with negative optical power; the seventh lens is a plano-convex lens with positive optical power; the eighth lens is a concave-convex lens with positive optical power; the ninth lens is a concave-convex lens with positive optical power; and the tenth lens is a convex-concave lens with positive optical power.

16. The Schamm optical system according to claim 14, characterized in that, The focal length fa of the front lens group satisfies 60mm≤fa≤90mm, the focal length fb of the middle lens group satisfies -200mm≤fb≤-100mm, and the focal length fc of the rear lens group satisfies 20mm≤fc≤50mm. The axial distance d12 between the front lens group and the middle lens group satisfies 2mm≤d12≤7mm, the axial distance d23 between the middle lens group and the rear lens group satisfies 3mm≤d23≤11mm, and the axial distance d34 between the rear lens group and the correction component satisfies 10mm≤d34≤50mm.

17. The Schamm optical system according to claim 14, characterized in that, The radius of curvature R11 of the incident surface of the first lens satisfies 30mm ≤ R11 ≤ 50mm, and the radius of curvature R12 of the exit surface satisfies -135mm ≤ R12 ≤ -115mm; the radius of curvature R21 of the incident surface of the second lens satisfies 15mm ≤ R21 ≤ 35mm, and the radius of curvature R22 of the exit surface satisfies 25mm ≤ R22 ≤ 45mm; the radius of curvature R31 of the incident surface of the third lens satisfies 20mm ≤ R3 The radius of curvature of the incident surface of the fourth lens is 15mm ≤ R32 ≤ 35mm, and the radius of curvature of the exit surface is 40mm ≤ R42 ≤ 65mm. The radius of curvature of the incident surface of the fifth lens is -75mm ≤ R51 ≤ -50mm, and the radius of curvature of the exit surface is 20mm ≤ R52 ≤ 40mm. 0mm; the radius of curvature R61 of the incident surface of the sixth lens satisfies -30mm≤R61≤-10mm, and the radius of curvature R62 of the exit surface is infinite; the radius of curvature R71 of the incident surface of the seventh lens is infinite, and the radius of curvature R72 of the exit surface satisfies -35mm≤R72≤-15mm; the radius of curvature R81 of the incident surface of the eighth lens satisfies -130mm≤R81≤-60mm, and the radius of curvature R of the exit surface is infinite. The radius of curvature of the incident surface of the ninth lens, R91, satisfies -640mm≤R91≤-430mm, and the radius of curvature of the exit surface, R92, satisfies -50mm≤R92≤-30mm; the radius of curvature of the incident surface of the tenth lens, R101, satisfies 40mm≤R101≤60mm, and the radius of curvature of the exit surface, R102, satisfies 150mm≤R102≤170mm.

18. The Schamm optical system according to claim 14, characterized in that, The center thickness GT1 of the first lens satisfies 3mm ≤ GT1 ≤ 7mm; the center thickness GT2 of the second lens satisfies 2mm ≤ GT2 ≤ 5mm; the center thickness GT3 of the third lens satisfies 2mm ≤ GT3 ≤ 5mm; the center thickness GT4 of the fourth lens satisfies 2mm ≤ GT4 ≤ 5mm; the center thickness GT5 of the fifth lens satisfies 1mm ≤ GT5 ≤ 4mm; the center thickness GT6 of the sixth lens satisfies 1mm ≤ GT6 ≤ 4mm; the center thickness GT7 of the seventh lens satisfies 4mm ≤ GT7 ≤ 7mm; the center thickness GT8 of the eighth lens satisfies 2mm ≤ GT8 ≤ 6mm; the center thickness GT9 of the ninth lens satisfies 3mm ≤ GT9 ≤ 7mm; and the center thickness GT10 of the tenth lens satisfies 3mm ≤ GT10 ≤ 6mm.

19. The Schamm optical system according to claim 14, characterized in that, The air gap distance AT1 between the first lens and the second lens along the optical axis satisfies 0mm ≤ AT1 ≤ 2mm; the air gap distance AT2 between the second lens and the third lens along the optical axis satisfies 0mm ≤ AT2 ≤ 4mm; the air gap distance AT3 between the third lens and the fourth lens along the optical axis satisfies 1mm ≤ AT3 ≤ 3mm; the air gap distance AT4 between the fourth lens and the fifth lens along the optical axis satisfies 1mm ≤ AT4 ≤ 3mm; the air gap distance AT5 between the fifth lens and the aperture stop along the optical axis satisfies 1mm ≤ AT4 ≤ 3mm. mm≤AT5≤3mm; the air gap AT6 between the aperture stop and the sixth lens along the optical axis satisfies 2mm≤AT6≤4mm; the sixth lens and the seventh lens are cemented lenses; the air gap AT7 between the seventh lens and the eighth lens along the optical axis satisfies 0mm≤AT7≤4mm; the air gap AT8 between the eighth lens and the ninth lens along the optical axis satisfies 4mm≤AT8≤9mm; the air gap AT9 between the ninth lens and the tenth lens along the optical axis satisfies 0mm≤AT9≤2mm.

20. The Schamm optical system according to claim 14, characterized in that, The focal length f1 of the first lens satisfies 35mm ≤ f1 ≤ 45mm; the focal length f2 of the second lens satisfies 80mm ≤ f2 ≤ 130mm; the focal length f3 of the third lens satisfies -70mm ≤ f3 ≤ -35mm; the focal length f4 of the fourth lens satisfies 40mm ≤ f4 ≤ 70mm; the focal length f5 of the fifth lens satisfies -25mm ≤ f5 ≤ -15mm; the focal length f6 of the sixth lens satisfies -25mm ≤ f6 ≤ -15mm; the focal length f7 of the seventh lens satisfies 35mm ≤ f7 ≤ 45mm; the focal length f8 of the eighth lens satisfies 85mm ≤ f8 ≤ 105mm; the focal length f9 of the ninth lens satisfies 45mm ≤ f9 ≤ 65mm; and the focal length f10 of the tenth lens satisfies 80mm ≤ f10 ≤ 100mm.

21. The Schamm optical system according to claim 14, characterized in that, The focal length f1 of the first lens and the focal length f of the Sham lens satisfy 0.5 < f1 / f < 2.5; the focal length f2 of the second lens and the focal length f of the Sham lens satisfy 1 < f2 / f < 4; the focal length f3 of the third lens and the focal length f of the Sham lens satisfy 0.5 < |f3 / f| < 2.5; the focal length f4 of the fourth lens and the focal length f of the Sham lens satisfy 0.5 < f4 / f < 2.5; the focal length f5 of the fifth lens and the focal length f of the Sham lens satisfy 0.2 < |f5 / f| < 2. The focal length f6 of the sixth lens and the focal length f of the Sham lens satisfy 0.2 < |f6 / f| < 2; the focal length f7 of the seventh lens and the focal length f of the Sham lens satisfy 0.5 < f7 / f < 2.5; the focal length f8 of the eighth lens and the focal length f of the Sham lens satisfy 1 < f8 / f < 3; the focal length f9 of the ninth lens and the focal length f of the Sham lens satisfy 0.5 < |f9 / f| < 2.5; the focal length f10 of the tenth lens and the focal length f of the Sham lens satisfy 1 < f10 / f < 3.

22. The Schamm optical system according to claim 14, characterized in that, The first lens has a refractive index N1 satisfying 1.7 ≤ N1 ≤ 1.8 and an Abbe number V1 satisfying 45 ≤ V1 ≤ 50; the second lens has a refractive index N2 satisfying 1.8 ≤ N2 ≤ 1.9 and an Abbe number V2 satisfying 35 ≤ V2 ≤ 40; the third lens has a refractive index N3 satisfying 1.7 ≤ N3 ≤ 1.8 and an Abbe number V3 satisfying 35 ≤ V3 ≤ 40; the fourth lens has a refractive index N4 satisfying 1.8 ≤ N4 ≤ 1.9 and an Abbe number V4 satisfying 40 ≤ V4 ≤ 45; the fifth lens has a refractive index N5 satisfying 1.8 ≤ N5 ≤ 1.9 and an Abbe number V5 satisfying 40 ≤ V5 ≤ 45; The refractive index N6 of the sixth lens satisfies 1.7≤N6≤1.8, and the Abbe number V6 satisfies 25≤V6≤30; the refractive index N7 of the seventh lens satisfies 1.5≤N7≤1.6, and the Abbe number V7 satisfies 80≤V7≤85; the refractive index N8 of the eighth lens satisfies 1.5≤N8≤1.6, and the Abbe number V8 satisfies 80≤V8≤85; the refractive index N9 of the ninth lens satisfies 1.7≤N9≤1.8, and the Abbe number V9 satisfies 50≤V9≤55; the refractive index N10 of the tenth lens satisfies 1.7≤N10≤1.8, and the Abbe number V10 satisfies 50≤V10≤55.

23. The Schamm optical system according to claim 13, characterized in that, The SAM lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens arranged coaxially from the object side to the image side; the aperture stop is located between the fourth lens and the fifth lens; The first lens, the second lens, the third lens, and the fourth lens form the front lens group; the fifth lens, the sixth lens, and the seventh lens form the middle lens group; and the eighth lens and the ninth lens form the rear lens group.

24. The Schamm optical system according to claim 23, characterized in that, The first lens is a biconvex lens with positive optical power; the second lens is a convex-concave lens with positive optical power; the third lens is a convex-concave lens with positive optical power; the fourth lens is a convex-concave lens with negative optical power; the fifth lens is a concave-plano lens with negative optical power; the sixth lens is a plano-concave lens with positive optical power; the fifth and sixth lenses are cemented lenses with negative optical power; the seventh lens is a concave-convex lens with positive optical power; the eighth lens is a plano-convex lens with positive optical power; and the ninth lens is a convex-concave lens with positive optical power.

25. The Schamm optical system according to claim 23, characterized in that, The focal length fa of the front lens group satisfies 25mm≤fa≤50mm, the focal length fb of the middle lens group satisfies -70mm≤fb≤-50mm, and the focal length fc of the rear lens group satisfies 20mm≤fc≤40mm. The axial distance d12 between the front lens group and the middle lens group satisfies 10mm≤d12≤12mm, the axial distance d23 between the middle lens group and the rear lens group satisfies 0.4mm≤d23≤2mm, and the axial distance d34 between the rear lens group and the correction component satisfies 20mm≤d34≤40mm.

26. The Schamm optical system according to claim 23, characterized in that, The radius of curvature R11 of the incident surface of the first lens satisfies 50mm ≤ R11 ≤ 60mm, and the radius of curvature R12 of the exit surface satisfies -65mm ≤ R12 ≤ -55mm; the radius of curvature R21 of the incident surface of the second lens satisfies 20mm ≤ R21 ≤ 30mm, and the radius of curvature R22 of the exit surface satisfies 75mm ≤ R22 ≤ 85mm; the radius of curvature R31 of the incident surface of the third lens satisfies 15mm ≤ R31 ≤ 25mm, and the radius of curvature R32 of the exit surface satisfies 45mm ≤ R32 ≤ 55mm; the radius of curvature R41 of the incident surface of the fourth lens satisfies 75mm ≤ R41 ≤ 85mm, and the radius of curvature R42 of the exit surface satisfies 5mm ≤ R42 ≤ 15mm; the radius of curvature R51 of the incident surface of the fifth lens satisfies... The radius of curvature of the incident surface of the sixth lens is -15mm ≤ R51 ≤ -5mm, and the radius of curvature of the exit surface R52 is infinite; the radius of curvature of the incident surface of the seventh lens is -35mm ≤ R51 ≤ -25mm, and the radius of curvature of the exit surface R62 is -25mm ≤ R72 ≤ -15mm; the radius of curvature of the incident surface of the eighth lens is infinite, and the radius of curvature of the exit surface R82 is -35mm ≤ R82 ≤ -25mm; the radius of curvature of the incident surface of the ninth lens is 30mm ≤ R91 ≤ 40mm, and the radius of curvature of the exit surface R92 is 115mm ≤ R92 ≤ 125mm.

27. The Schamm optical system according to claim 23, characterized in that, The center thickness GT1 of the first lens satisfies 3mm ≤ GT1 ≤ 6mm; the center thickness GT2 of the second lens satisfies 2mm ≤ GT2 ≤ 5mm; the center thickness GT3 of the third lens satisfies 2mm ≤ GT3 ≤ 5mm; the center thickness GT4 of the fourth lens satisfies 2mm ≤ GT4 ≤ 5mm; the center thickness GT5 of the fifth lens satisfies 1mm ≤ GT5 ≤ 3mm; the center thickness GT6 of the sixth lens satisfies 2mm ≤ GT6 ≤ 5mm; the center thickness GT7 of the seventh lens satisfies 3mm ≤ GT7 ≤ 6mm; the center thickness GT8 of the eighth lens satisfies 3mm ≤ GT8 ≤ 6mm; and the center thickness GT9 of the ninth lens satisfies 3mm ≤ GT9 ≤ 6mm.

28. The Schamm optical system according to claim 23, characterized in that, The air gap AT1 between the first lens and the second lens along the optical axis satisfies 0mm≤AT1≤2mm; the air gap AT2 between the second lens and the third lens along the optical axis satisfies 0mm≤AT2≤2mm; the air gap AT3 between the third lens and the fourth lens along the optical axis satisfies 0mm≤AT3≤2mm; the air gap AT4 between the fourth lens and the aperture stop along the optical axis satisfies 1mm≤AT4≤3mm; the air gap AT5 between the aperture stop and the fifth lens along the optical axis satisfies 7mm≤AT5≤9mm; the fifth lens and the sixth lens are cemented lenses; the air gap AT6 between the sixth lens and the seventh lens along the optical axis satisfies 0mm≤AT6≤2mm; the air gap AT7 between the seventh lens and the eighth lens along the optical axis satisfies 0mm≤AT7≤2mm; the air gap AT8 between the eighth lens and the ninth lens along the optical axis satisfies 0mm≤AT8≤2mm.

29. The Schamm optical system according to claim 23, characterized in that, The focal length f1 of the first lens satisfies 55mm≤f1≤65mm; the focal length f2 of the second lens satisfies 40mm≤f2≤50mm; the focal length f3 of the third lens satisfies 40mm≤f3≤50mm; the focal length f4 of the fourth lens satisfies -25mm≤f4≤-15mm; the focal length f5 of the fifth lens satisfies -20mm≤f5≤-10mm; the focal length f6 of the sixth lens satisfies 25mm≤f6≤35mm; the focal length f7 of the seventh lens satisfies 65mm≤f7≤75mm; the focal length f8 of the eighth lens satisfies 35mm≤f8≤45mm; and the focal length f9 of the ninth lens satisfies 55mm≤f9≤65mm.

30. The Schamm optical system according to claim 23, characterized in that, The focal length f1 of the first lens and the focal length f of the Sham lens satisfy 0.5 < f1 / f < 2; the focal length f2 of the second lens and the focal length f of the Sham lens satisfy 0.5 < f2 / f < 2.5; the focal length f3 of the third lens and the focal length f of the Sham lens satisfy 0.5 < f3 / f < 2.5; the focal length f4 of the fourth lens and the focal length f of the Sham lens satisfy 3 < f4 / f < 5; the focal length f5 of the fifth lens and the focal length f of the Sham lens satisfy 0.5 < f1 ... fifth lens and the focal length f of the Sham lens satisfy 0.5 < f1 / f < 2.5; the focal length f5 of the fifth lens and the focal length f of the Sham lens satisfy 0.5 < f1 / f < 2.5; the focal length f4 of the fourth lens and the focal length f of the Sham lens satisfy 3 < f4 / f < 5; the focal length f5 of the fifth lens and the focal length f6 of the Sham lens satisfy 0.5 < f1 / f < 2.5; the focal length f1 of the third lens and the focal length f6 of the Sham lens satisfy 0.5 < f1 / f < 2.5; the focal length f4 of the fourth lens and the focal length f6 of the Sham lens satisfy 3 < f4 / f < 5; the focal length f5 of the fifth lens and the focal length f6 of the Sham lens satisfy 0.5 < f1 / f < 2.5; the focal length f1 of the third lens and the focal length f6 of the Sham lens satisfy 0.5 < f1 / f < 2.5 The following conditions must be met: 0.1 < |f5 / f| < 2; the focal length f6 of the sixth lens and the focal length f of the Sham lens must satisfy 0.2 < |f6 / f| < 2; the focal length f7 of the seventh lens and the focal length f of the Sham lens must satisfy 0.5 < f7 / f < 2.5; the focal length f8 of the eighth lens and the focal length f of the Sham lens must satisfy 0.5 < f8 / f < 2.5; the focal length f9 of the ninth lens and the focal length f of the Sham lens must satisfy 0.5 < f9 / f < 2.

5.

31. The Schamm optical system according to claim 23, characterized in that, The first lens has a refractive index N1 satisfying 1.5 ≤ N1 ≤ 1.6 and an Abbe number V1 satisfying 80 ≤ V1 ≤ 85; the second lens has a refractive index N2 satisfying 1.7 ≤ N2 ≤ 1.8 and an Abbe number V2 satisfying 50 ≤ V2 ≤ 55; the third lens has a refractive index N3 satisfying 1.7 ≤ N3 ≤ 1.8 and an Abbe number V3 satisfying 45 ≤ V3 ≤ 50; the fourth lens has a refractive index N4 satisfying 1.6 ≤ N4 ≤ 1.7 and an Abbe number V4 satisfying 30 ≤ V4 ≤ 35; and the fifth lens has a refractive index N5 satisfying 1.8 ≤ N5 ≤ 1.8 ≤ N1 ≤ 1.6 ≤ 1.6 ≤ N1 ≤ 1.6 ≤ 1.6 ≤ N1 ≤ 1.6 ≤ 1.6 ≤ V1 ≤ 1.6 ≤ 1.6 ≤ N1 ≤ 1.6 ≤ V1 ≤ 1.6 ... The refractive index of the sixth lens is ≤1.9, and the Abbe number V5 satisfies 25≤V5≤30; the refractive index of the seventh lens is 1.6≤N6≤1.7, and the Abbe number V6 satisfies 45≤V6≤50; the refractive index of the seventh lens is 1.8≤N7≤1.9, and the Abbe number V7 satisfies 40≤V7≤45; the refractive index of the eighth lens is 1.7≤N8≤1.8, and the Abbe number V8 satisfies 50≤V8≤55; the refractive index of the ninth lens is 1.8≤N9≤1.9, and the Abbe number V9 satisfies 40≤V9≤45.

32. An electronic device, characterized in that, include: The sensor module according to any one of claims 1-4, or the Sham optical system according to any one of claims 5-31.

33. The electronic device according to claim 32, characterized in that, The electronic device is a 3D camera.

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