Super-high-light-transmission low-light night vision lens

Abstract

The invention discloses an ultra-high-light-transmission low-light night vision lens. Comprising a first lens, a second lens, a third lens, a fourth lens, a first diaphragm, a fifth lens, a sixth lens, a seventh lens, a second diaphragm, an eighth lens, a ninth lens, a tenth lens, an eleventh lens, a twelfth lens, a thirteenth lens, a fourteenth lens, a fifteenth lens, a sixteenth lens and a seventeenth lens which are sequentially arranged from the object side to the image side along the optical axis. A turning thought is adopted, the utilization rate of an edge view field is improved through the design that an entrance pupil is arranged in front, the diaphragm is located in the middle of the lens to suppress an aberration structure, the total optical length is shortened by adopting a turning light path, the total length is smaller than 510 mm, and the overall imaging quality is clear.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of optical lenses, and particularly relates to an ultralarge-aperture micro-light night vision lens. BACKGROUND

[0002] In recent years, the surge in the application of XR devices in the fields of consumer electronics, medical treatment, industrial detection and the like has promoted the innovative demand for lens design, and especially in the design of detection lenses, miniaturization, high resolution, dynamic adaptation and imaging stabilization need to be considered. However, the existing XR lens detection devices still have some technical and performance limitations, for example, the following aspects: 1. The demand for miniaturization of XR devices, for example, AR glasses require compact and lightweight lens structures, and traditional designs are difficult to achieve high optical performance in limited space.

[0003] 2. Adaptation of XR devices to dynamic environments, in the XR application scenario, the target distance and diopter change frequently, and the lens needs to have dynamic field curvature correction capability.

[0004] 3. Optimization of the imaging quality of the XR device, the rationality of the pupil position and the entrance pupil design directly affects the contrast and aberration control of the imaging design.

[0005] Therefore, the present application provides an ultralarge-aperture micro-light night vision lens, which aims to meet the above-mentioned needs. SUMMARY

[0006] The present application provides an ultralarge-aperture micro-light night vision lens, which aims to solve the problems pointed out in the background.

[0007] To solve the above technical problems, the present application adopts the following technical solutions: An ultralarge-aperture micro-light night vision lens, comprising: a first lens, a second lens, a third lens, a fourth lens, a first diaphragm, a fifth lens, a sixth lens, a seventh lens, a second diaphragm, an eighth lens, a ninth lens, a tenth lens, an eleventh lens, a twelfth lens, a thirteenth lens, a fourteenth lens, a fifteenth lens and a sixteenth lens arranged in order from the object side to the image side along the optical axis. The first lens has a positive refractive power, the object side surface is a plane, and the image side surface is a convex surface. The second lens has a negative refractive power, the object side surface is a concave surface, and the image side surface is a convex surface. The third lens has a negative refractive power, the object side surface is a convex surface, and the image side surface is a concave surface. The fourth lens has a positive refractive power, the object side surface is a convex surface, and the image side surface is a convex surface. The fifth lens is a turning system. The sixth lens has a positive refractive power, the object side surface is a convex surface, and the image side surface is a convex surface. The seventh lens has positive refractive power, the object side surface is a convex surface, and the image side surface is a concave surface; The eighth lens has negative refractive power, the object side surface is a concave surface, and the image side surface is a concave surface; The ninth lens has positive refractive power, the object side surface is a convex surface, and the image side surface is a convex surface; The tenth lens has positive refractive power, the object side surface is a convex surface, and the image side surface is a convex surface; The eleventh lens has negative refractive power, the object side surface is a concave surface, and the image side surface is a convex surface; The twelfth lens has positive refractive power, the object side surface is a convex surface, and the image side surface is a concave surface; The thirteenth lens has positive refractive power, the object side surface is a convex surface, and the image side surface is a convex surface; The fourteenth lens has negative refractive power, the object side surface is a convex surface, and the image side surface is a concave surface; The fifteenth lens has negative refractive power, the object side surface is a concave surface, and the image side surface is a concave surface; The sixteenth lens has negative refractive power, the object side surface is a convex surface, and the image side surface is a concave surface; The seventeenth lens has negative refractive power, the object side surface is a convex surface, and the image side surface is a convex surface.

[0008] Further, the object side surface of the second lens has a curvature radius ranging from negative 15.388 to negative 15.374, and the image side surface of the second lens has a curvature radius ranging from negative 27.494 to negative 27.445; The object side surface of the third lens has a curvature radius ranging from 69.794 to 71.236; The object side surface of the fourth lens has a curvature radius ranging from 27.043 to 27.117, and the image side surface of the fourth lens has a curvature radius ranging from negative 93.309 to negative 90.841; The object side surface of the sixth lens has a curvature radius ranging from 181.435 to 183.937, and the image side surface of the sixth lens has a curvature radius ranging from negative 333.867 to negative 323.744; The object side surface of the seventh lens has a curvature radius ranging from 29.107 to 29.112, and the image side surface of the seventh lens has a curvature radius ranging from 30.232 to 30.238; The object side surface of the eighth lens has a curvature radius ranging from negative 38.612 to negative 38.534; The object side surface of the ninth lens has a curvature radius ranging from 38.234 to 38.534, and the image side surface of the ninth lens has a curvature radius ranging from negative 47.327 to negative 47.206; The object side surface radius of curvature of the ninth lens ranges from 38.234 to 38.534, and the image side surface radius of curvature of the ninth lens ranges from -47.327 to -47.206; The object side surface radius of curvature of the tenth lens ranges from 45.569 to 45.594; The object side surface radius of curvature of the eleventh lens ranges from -33.935 to -33.927, and the image side surface radius of curvature of the eleventh lens ranges from -157.893 to -154.939; The object side surface radius of curvature of the twelfth lens ranges from 36.581 to 36.638, and the image side surface radius of curvature of the twelfth lens ranges from 104.696 to 104.733; The object side surface radius of curvature of the thirteenth lens ranges from 45.143 to 45.157; The object side surface radius of curvature of the fourteenth lens ranges from -200.122 to -199.506, and the image side surface radius of curvature of the fourteenth lens ranges from 12.403 to 12.430; The object side surface radius of curvature of the fifteenth lens ranges from -22.375 to -22.277, and the image side surface radius of curvature of the fifteenth lens ranges from 55.848 to 56.265; The object side surface radius of curvature of the sixteenth lens ranges from 368.720 to 377.269, and the image side surface radius of curvature of the sixteenth lens ranges from 88.620 to 91.069; The object side surface radius of curvature of the seventeenth lens ranges from 330.796 to 352.606, and the image side surface radius of curvature of the seventeenth lens ranges from -29.981 to -29.901.

[0009] Further, the refractive indexes of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, the tenth lens, the eleventh lens, the twelfth lens, the thirteenth lens, the fourteenth lens, the fifteenth lens, the sixteenth lens, and the seventeenth lens are respectively: 1.81, 2.00, 1.92, 1.70, 1.52, 1.83, 1.85, 1.81, 1.59, 1.59, 1.81, 2.00, 1.81-1.82, 1.69, 1.81, 1.81, and 1.95.

[0010] Further, the focal length of the first lens ranges from 18.938 to 18.954; The focal length of the second lens ranges from -51.352 to -51.096; The focal length of the third lens ranges from -48.770 to -47.915; The focal length of the fourth lens ranges from 31.196 to 31.420; The focal length of the sixth lens ranges from 140.409 to 141.302; The focal length of the seventh lens ranges from 297.460 to 298.359; The focal length of the eighth lens ranges from -23.429 to -23.388; The focal length of the ninth lens ranges from 36.788 to 36.878; The focal length of the tenth lens ranges from 34.228 to 34.277; The focal length of the eleventh lens ranges from -55.511 to -54.997; The focal length of the twelfth lens ranges from 51.841 to 51.969; The focal length of the thirteenth lens ranges from 46.252 to 46.287; The focal length of the fourteenth lens ranges from -16.773 to -16.741; The focal length of the fifteenth lens ranges from -19.435 to -19.416; The focal length of the sixteenth lens ranges from -149.305 to -143.285; The focal length of the seventeenth lens ranges from 28.908 to 28.968.

[0011] Further, the outer diameter of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, the tenth lens, the eleventh lens, the twelfth lens, the thirteenth lens, the fourteenth lens, the fifteenth lens, the sixteenth lens, and the seventeenth lens is less than 38mm.

[0012] Further, the material of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, the tenth lens, the eleventh lens, the twelfth lens, the thirteenth lens, the fourteenth lens, the fifteenth lens, the sixteenth lens, and the seventeenth lens is glass.

[0013] Further, the dispersion coefficients of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, the tenth lens, the eleventh lens, the twelfth lens, the thirteenth lens, the fourteenth lens, the fifteenth lens, the sixteenth lens and the seventeenth lens are 33.3, 25.5, 20.9, 55.5, 64.2, 37.2, 23.8, 33.3, 68.6, 68.6, 25.5, 25.5, 40.9, 31.2, 25.5, 25.5 and 17.9 respectively.

[0014] Compared with the prior art, the present application has the following technical effects: 1. The super large light passing micro-light night vision lens adopts a folding idea, the design of the front entrance pupil improves the utilization rate of the edge field of view, and the position of the diaphragm is in the middle of the lens to suppress the aberration structure, wherein 17 lenses are used, the total length is shortened by adopting the folding light path, the total length is less than 510mm, and the imaging quality is clear as a whole; the entrance pupil and the diaphragm are optimized, the design of the front entrance pupil improves the utilization rate of the edge field of view, and the position of the diaphragm is in the middle of the lens to suppress the aberration, at this time the symmetry of the light path is balanced, and the processing complexity is balanced; the fifth lens introduces the folding light path, the total length of the lens is shortened through the folding light path, and the demand of equipment miniaturization is met; and the lens has good field curvature correction, the field curvature correction under different object distances and different refractive powers is good, the curvature and spacing of the lens are adjusted in real time, and the multi-scene application performance is improved.

[0015] 2. The working F number of the super large light passing micro-light night vision lens is 7.36, the optical distortion is less than 3%, and the relative luminance is greater than 76%, so that clear and stable images can be provided under extremely low light conditions.

[0016] 3. The super large light passing micro-light night vision lens can be used with a 1-inch detector, and the imaging quality is good, and the imaging quality from the center to the edge is relatively uniform.

[0017] 4. The first lens in the super large light passing micro-light night vision lens adopts positive refractive power, the positive lens converges light rays at this time, and the light path is simplified and the aberration is optimized. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structure schematic diagram of the super large light passing micro-light night vision lens of the embodiment one of the present application; Figure 2 is an MTF diagram of the super large light passing micro-light night vision lens of the embodiment one of the present application; Figure 3 is a polychromatic diffraction defocus modulation transfer function diagram of the super large light passing micro-light night vision lens of the embodiment one of the present application; Figure 4 is a lateral chromatic aberration diagram of the super-large-aperture micro-light night vision lens of the embodiment one of the present application; Figure 5 is a longitudinal chromatic aberration diagram of the super-large-aperture micro-light night vision lens of the embodiment one of the present application; Figure 6 is a field curvature and distortion composite analysis diagram of the super-large-aperture micro-light night vision lens of the embodiment one of the present application; Figure 7 is a lateral light fan diagram of the super-large-aperture micro-light night vision lens of the embodiment one of the present application; Figure 8 is a point diagram of the super-large-aperture micro-light night vision lens of the embodiment one of the present application; Figure 9 is a structure schematic diagram of the super-large-aperture micro-light night vision lens of the embodiment two of the present application; Figure 10 is an MTF diagram of the super-large-aperture micro-light night vision lens of the embodiment two of the present application; Figure 11 is a polychromatic diffraction defocus modulation transfer function diagram of the super-large-aperture micro-light night vision lens of the embodiment two of the present application; Figure 12 is a lateral chromatic aberration diagram of the super-large-aperture micro-light night vision lens of the embodiment two of the present application; Figure 13 is a longitudinal chromatic aberration diagram of the super-large-aperture micro-light night vision lens of the embodiment two of the present application; Figure 14 is a field curvature and distortion composite analysis diagram of the super-large-aperture micro-light night vision lens of the embodiment two of the present application; Figure 15 is a lateral light fan diagram of the super-large-aperture micro-light night vision lens of the embodiment two of the present application; Figure 16 is a point diagram of the super-large-aperture micro-light night vision lens of the embodiment two of the present application; Figure 17 is a structure schematic diagram of the super-large-aperture micro-light night vision lens of the embodiment three of the present application; Figure 18 is an MTF diagram of the super-large-aperture micro-light night vision lens of the embodiment three of the present application; Figure 19 is a polychromatic diffraction defocus modulation transfer function diagram of the super-large-aperture micro-light night vision lens of the embodiment three of the present application; Figure 20 is a lateral chromatic aberration diagram of the super-large-aperture micro-light night vision lens of the embodiment three of the present application; Figure 21 is a longitudinal chromatic aberration diagram of the super-large-aperture micro-light night vision lens of the embodiment three of the present application; Figure 22 is a field curvature and distortion composite analysis diagram of the super-large light-passing micro-light night vision lens of embodiment three of the present application; Figure 23 is a transverse light fan chart of the super-large light-passing micro-light night vision lens of embodiment three of the present application; Figure 24 is a point array diagram of the super-large light-passing micro-light night vision lens of embodiment three of the present application.

[0019] In the figure: L1, first lens; L2, second lens; L3, third lens; L4, fourth lens; L5, fifth lens; L6, sixth lens; L7, seventh lens; L8, eighth lens; L9, ninth lens; L10, tenth lens; L11, eleventh lens; L12, twelfth lens; L13, thirteenth lens; L14, fourteenth lens; L15, fifteenth lens; L16, sixteenth lens; L17, seventeenth lens; L18, eighteenth lens; ST1, first diaphragm; ST2, second diaphragm; G, protective glass; IMA, imaging surface. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the present application more clear, the following will combine the specific embodiments of the present application, and refer to the drawings to clearly and completely describe the technical scheme of the present application.

[0021] As shown in Figure 1 , Figure 9 , Figure 17 , a super-large light-passing micro-light night vision lens comprises: a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a first diaphragm ST1, a fifth lens L5, a sixth lens L6, a seventh lens L7, a second diaphragm ST2, an eighth lens L8, a ninth lens L9, a tenth lens L10, an eleventh lens L11, a twelfth lens L12, a thirteenth lens L13, a fourteenth lens L14, a fifteenth lens L15, a sixteenth lens L16, and a seventeenth lens L17 arranged in sequence along an optical axis from an object side to an image side. The first lens L1 has a positive refractive power, and the object side surface is a plane and the image side surface is a convex surface. The second lens L2 has a negative refractive power, and the object side surface is a concave surface and the image side surface is a convex surface. The third lens L3 has a negative refractive power, and the object side surface is a convex surface and the image side surface is a concave surface. The fourth lens L4 has a positive refractive power, and the object side surface is a convex surface and the image side surface is a convex surface. The fifth lens L5 is a turning system. The sixth lens L6 has positive refractive power, the object side surface is convex, and the image side surface is convex; The seventh lens L7 has positive refractive power, the object side surface is convex, and the image side surface is concave; The eighth lens L8 has negative refractive power, the object side surface is concave, and the image side surface is concave; The ninth lens L9 has positive refractive power, the object side surface is convex, and the image side surface is convex; The tenth lens L10 has positive refractive power, the object side surface is convex, and the image side surface is convex; The eleventh lens L11 has negative refractive power, the object side surface is concave, and the image side surface is convex; The twelfth lens L12 has positive refractive power, the object side surface is convex, and the image side surface is concave; The thirteenth lens L13 has positive refractive power, the object side surface is convex, and the image side surface is convex; The fourteenth lens L14 has negative refractive power, the object side surface is convex, and the image side surface is concave; The fifteenth lens L15 has negative refractive power, the object side surface is concave, and the image side surface is concave; The sixteenth lens L16 has negative refractive power, the object side surface is convex, and the image side surface is concave; The seventeenth lens L17 has negative refractive power, the object side surface is convex, and the image side surface is convex.

[0022] Further, the object side surface of the second lens L2 has a curvature radius ranging from negative 15.388 to negative 15.374, and the image side surface of the second lens L2 has a curvature radius ranging from negative 27.494 to negative 27.445; The object side surface of the third lens L3 has a curvature radius ranging from 69.794 to 71.236; The object side surface of the fourth lens L4 has a curvature radius ranging from 27.043 to 27.117, and the image side surface of the fourth lens L4 has a curvature radius ranging from negative 93.309 to negative 90.841; The object side surface of the sixth lens L6 has a curvature radius ranging from 181.435 to 183.937, and the image side surface of the sixth lens L6 has a curvature radius ranging from negative 333.867 to negative 323.744; The object side surface of the seventh lens L7 has a curvature radius ranging from 29.107 to 29.112, and the image side surface of the seventh lens L7 has a curvature radius ranging from 30.232 to 30.238; The object side surface of the eighth lens L8 has a curvature radius ranging from negative 38.612 to negative 38.534; The object side surface curvature radius of the ninth lens L9 ranges from 38.234 to 38.534, and the image side surface curvature radius of the ninth lens L9 ranges from -47.327 to -47.206; The object side surface curvature radius of the ninth lens L9 ranges from 38.234 to 38.534, and the image side surface curvature radius of the ninth lens L9 ranges from -47.327 to -47.206; The object side surface curvature radius of the tenth lens L10 ranges from 45.569 to 45.594; The object side surface curvature radius of the eleventh lens L11 ranges from -33.935 to -33.927, and the image side surface curvature radius of the eleventh lens L11 ranges from -157.893 to -154.939; The object side surface curvature radius of the twelfth lens L12 ranges from 36.581 to 36.638, and the image side surface curvature radius of the twelfth lens L12 ranges from 104.696 to 104.733; The object side surface curvature radius of the thirteenth lens L13 ranges from 45.143 to 45.157; The object side surface curvature radius of the fourteenth lens L14 ranges from -200.122 to -199.506, and the image side surface curvature radius of the fourteenth lens L14 ranges from 12.403 to 12.430; The object side surface curvature radius of the fifteenth lens L15 ranges from -22.375 to -22.277, and the image side surface curvature radius of the fifteenth lens L15 ranges from 55.848 to 56.265; The object side surface curvature radius of the sixteenth lens L16 ranges from 368.720 to 377.269, and the image side surface curvature radius of the sixteenth lens L16 ranges from 88.620 to 91.069; The object side surface curvature radius of the seventeenth lens L17 ranges from 330.796 to 352.606, and the image side surface curvature radius of the seventeenth lens L17 ranges from -29.981 to -29.901.

[0023] Further, the refractive indexes of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, the eighth lens L8, the ninth lens L9, the tenth lens L10, the eleventh lens L11, the twelfth lens L12, the thirteenth lens L13, the fourteenth lens L14, the fifteenth lens L15, the sixteenth lens L16, and the seventeenth lens L17 are 1.81, 2.00, 1.92, 1.70, 1.52, 1.83, 1.85, 1.81, 1.59, 1.59, 1.81, 2.00, 1.81-1.82, 1.69, 1.81, 1.81, and 1.95, respectively.

[0024] Further, the focal length range of the first lens L1 is 18.938-18.954; the focal length range of the second lens L2 is negative 51.352-negative 51.096; the focal length range of the third lens L3 is negative 48.770-negative 47.915; the focal length range of the fourth lens L4 is 31.196-31.420; the focal length range of the sixth lens L6 is 140.409-141.302; the focal length range of the seventh lens L7 is 297.460-298.359; the focal length range of the eighth lens L8 is negative 23.429-negative 23.388; the focal length range of the ninth lens L9 is 36.788-36.878; the focal length range of the tenth lens L10 is 34.228-34.277; the focal length range of the eleventh lens L11 is negative 55.511-negative 54.997; the focal length range of the twelfth lens L12 is 51.841-51.969; the focal length range of the thirteenth lens L13 is 46.252-46.287; the focal length range of the fourteenth lens L14 is negative 16.773-negative 16.741; the focal length range of the fifteenth lens L15 is negative 19.435-negative 19.416; the focal length range of the sixteenth lens L16 is negative 149.305-negative 143.285; the focal length range of the seventeenth lens L17 is 28.908-28.968.

[0025] Further, the outer diameters of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, the eighth lens L8, the ninth lens L9, the tenth lens L10, the eleventh lens L11, the twelfth lens L12, the thirteenth lens L13, the fourteenth lens L14, the fifteenth lens L15, the sixteenth lens L16, and the seventeenth lens L17 are all less than 38 mm.

[0026] Further, the materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, the eighth lens L8, the ninth lens L9, the tenth lens L10, the eleventh lens L11, the twelfth lens L12, the thirteenth lens L13, the fourteenth lens L14, the fifteenth lens L15, the sixteenth lens L16, and the seventeenth lens L17 are all glass.

[0027] Further, the dispersion coefficients of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, the eighth lens L8, the ninth lens L9, the tenth lens L10, the eleventh lens L11, the twelfth lens L12, the thirteenth lens L13, the fourteenth lens L14, the fifteenth lens L15, the sixteenth lens L16, and the seventeenth lens L17 are 33.3, 25.5, 20.9, 55.5, 64.2, 37.2, 23.8, 33.3, 68.6, 68.6, 25.5, 25.5, 40.9, 31.2, 25.5, 25.5, and 17.9, respectively.

[0028] Embodiment One: Table 1: Parameters of Components in the Lens of Embodiment One

[0029] Wherein, infinity represents infinity.

[0030] Table 2: Parameters of Components in the Lens of Embodiment Two

[0031] Wherein, infinity represents infinity.

[0032] Table 3: Parameters of Components in the Lens of Embodiment Two

[0033] wherein infinity represents infinity.

[0034] Figure 2 、 Figure 10 、 Figure 18 respectively are a kind of MTF diagram of super large light passing micro-light night vision lens of the embodiment one, the embodiment two, the embodiment three of the present application; In the figure, central field of view: 50 cycles / mm under MTF value >0.5, still keep MTF value >0.3 at limit resolution, edge field of view: 50 cycles / mm at MTF value >0.5;It shows that the three embodiments of the present application all have full domain high resolving power, good imaging quality, and the MTF attenuation rate of field of view angle 0°→32° is lower, and the cross-field consistency is higher.

[0035] Figure 3 、 Figure 11 、 Figure 19 respectively are a kind of polychromatic diffraction defocus modulation transfer function diagram of super large light passing micro-light night vision lens of the embodiment one, the embodiment two, the embodiment three of the present application; In the figure, all field angles (TS 0°→TS 32°) of defocus curve are symmetric Gaussian distribution, MTF attenuation <10% in ±0.03mm defocus range, edge field of view still keeps MTF >0.35 when defocus ±0.05mm, which is better than the average of the same field of view in the industry, the lens structure of the present application is optimized through entrance pupil and diaphragm, the design of pre-entrance pupil improves the utilization rate of edge field of view, and the position of diaphragm is in the middle of lens to suppress aberration, at this time, the symmetry of optical path is balanced, and the processing complexity is balanced.

[0036] Figure 4 、 Figure 12 、 Figure 20 respectively are a kind of lateral chromatic aberration diagram of super large light passing micro-light night vision lens of the embodiment one, the embodiment two, the embodiment three of the present application; In the figure, the lateral chromatic aberration curve of wavelength 0.4358 μm-0.6563 μm, in the range of ±10 μm of horizontal axis, it shows that the lens of the present application can effectively control chromatic aberration, and the edge dispersion tends to zero, and the imaging quality is good.

[0037] Figure 5 、 Figure 13 、 Figure 21 respectively are a kind of longitudinal chromatic aberration diagram of super large light passing micro-light night vision lens of the embodiment one, the embodiment two, the embodiment three of the present application, In the figure, the slope change rate of each wavelength curve is <5% in ±0.1mm interval, which can effectively reduce the sensitivity of axial chromatic aberration to process fluctuation, thereby reducing the processing complexity;The short-wave focal shift is only 1 / 3 of the Airy disk diameter, which shows that the lens can avoid night vision imaging blur.

[0038] Figure 6 、 Figure 14 、 Figure 22 are respectively a field curvature and distortion composite analysis diagram of a super-large light passing micro-light night vision lens according to the first embodiment, the second embodiment and the third embodiment of the present application, In the figure, the field curvature curves are all compressed in a bandwidth of ±0.2mm, the curve amplitude is <0.15mm, the distortion curve has no jitter and no inflection point, and the slope change is small, which indicates that the present lens has high full field of view image surface flatness, can effectively eliminate edge image quality collapse, and has good field curvature correction under different object distances and different refractive powers.

[0039] Figure 7 、 Figure 15 、 Figure 23 are respectively a horizontal light fan diagram of a super-large light passing micro-light night vision lens according to the first embodiment, the second embodiment and the third embodiment of the present application, In the figure, the light offset of all field angles is ≤±10μm, which indicates that the present lens can realize full field of view near-diffraction limit aberration control. Figure 8 、 Figure 16 、 Figure 24 are respectively a point column diagram of a super-large light passing micro-light night vision lens according to the first embodiment, the second embodiment and the third embodiment of the present application, In the figure, the full field of view multi-wavelength spot overlap is high, which indicates that the optical aberration of the present lens is low.

[0040] The above only describes the preferred embodiments of the present application, and it should be noted that for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A high-throughput low-light night vision lens, characterized in that, include: The following lenses are arranged sequentially along the optical axis from the object side to the image side: first lens (L1), second lens (L2), third lens (L3), fourth lens (L4), first aperture stop (ST1), fifth lens (L5), sixth lens (L6), seventh lens (L7), second aperture stop (ST2), eighth lens (L8), ninth lens (L9), tenth lens (L10), eleventh lens (L11), twelfth lens (L12), thirteenth lens (L13), fourteenth lens (L14), fifteenth lens (L15), sixteenth lens (L16), and seventeenth lens (L17). The first lens (L1) has positive refractive power, with a flat object side and a convex image side; The second lens (L2) has negative refractive power, with a concave object side and a convex image side; The third lens (L3) has negative refractive power, with a convex object side and a concave image side; The fourth lens (L4) has positive refractive power, and the object side is convex, as is the image side. The fifth lens (L5) is a deflection system; The sixth lens (L6) has positive refractive power, with a convex object side and a convex image side; The seventh lens (L7) has positive refractive power, with a convex object side and a concave image side; The eighth lens (L8) has negative refractive power, and the object side is concave and the image side is concave. The ninth lens (L9) has positive refractive power, and the object side is convex, as is the image side. The tenth lens (L10) has positive refractive power, with a convex object-side surface and a convex image-side surface; The eleventh lens (L11) has negative refractive power, with a concave object side and a convex image side; The twelfth lens (L12) has positive refractive power, with a convex object side and a concave image side; The thirteenth lens (L13) has positive refractive power, with a convex object-side surface and a convex image-side surface; The fourteenth lens (L14) has negative refractive power, with a convex object side and a concave image side; The fifteenth lens (L15) has negative refractive power, and the object side is concave, as is the image side. The sixteenth lens (L16) has negative refractive power, with a convex object side and a concave image side; The seventeenth lens (L17) has negative refractive power, and the object side and the image side are both convex.

2. The ultra-large light-transmitting low-light night vision lens according to claim 1, characterized in that, The radius of curvature of the object side of the second lens (L2) ranges from -15.388 to -15.374, and the radius of curvature of the image side of the second lens (L2) ranges from -27.494 to -27.

445. The radius of curvature of the object side surface of the third lens (L3) ranges from 69.794 to 71.

236. The radius of curvature of the object side of the fourth lens (L4) ranges from 27.043 to 27.117, and the radius of curvature of the image side of the fourth lens (L4) ranges from -93.309 to -90.

841. The radius of curvature of the object side of the sixth lens (L6) ranges from 181.435 to 183.937, and the radius of curvature of the image side of the sixth lens (L6) ranges from -333.867 to -323.

744. The radius of curvature of the object side of the seventh lens (L7) ranges from 29.107 to 29.112, and the radius of curvature of the image side of the seventh lens (L7) ranges from 30.232 to 30.

238. The radius of curvature of the object side surface of the eighth lens (L8) ranges from -38.612 to -38.

534. The radius of curvature of the object side of the ninth lens (L9) ranges from 38.234 to 38.534, and the radius of curvature of the image side of the ninth lens (L9) ranges from -47.327 to -47.

206. The radius of curvature of the object side of the ninth lens (L9) ranges from 38.234 to 38.534, and the radius of curvature of the image side of the ninth lens (L9) ranges from -47.327 to -47.

206. The radius of curvature of the object side surface of the tenth lens (L10) ranges from 45.569 to 45.

594. The radius of curvature of the object side of the eleventh lens (L11) ranges from -33.935 to -33.927, and the radius of curvature of the image side of the eleventh lens (L11) ranges from -157.893 to -154.

939. The radius of curvature of the object side of the twelfth lens (L12) ranges from 36.581 to 36.638, and the radius of curvature of the image side of the twelfth lens (L12) ranges from 104.696 to 104.

733. The radius of curvature of the object side surface of the thirteenth lens (L13) ranges from 45.143 to 45.

157. The radius of curvature of the object side of the fourteenth lens (L14) ranges from -200.122 to -199.506, and the radius of curvature of the image side of the fourteenth lens (L14) ranges from 12.403 to 12.

430. The radius of curvature of the object side of the fifteenth lens (L15) ranges from -22.375 to -22.277, and the radius of curvature of the image side of the fifteenth lens (L15) ranges from 55.848 to 56.

265. The radius of curvature of the object side of the sixteenth lens (L16) ranges from 368.720 to 377.269, and the radius of curvature of the image side of the sixteenth lens (L16) ranges from 88.620 to 91.

069. The radius of curvature of the object side of the seventeenth lens (L17) ranges from 330.796 to 352.606, and the radius of curvature of the image side of the seventeenth lens (L17) ranges from -29.981 to -29.

901.

3. The ultra-large light-transmitting low-light night vision lens according to claim 1, characterized in that, The refractive indices of the first lens (L1), second lens (L2), third lens (L3), fourth lens (L4), fifth lens (L5), sixth lens (L6), seventh lens (L7), eighth lens (L8), ninth lens (L9), tenth lens (L10), eleventh lens (L11), twelfth lens (L12), thirteenth lens (L13), fourteenth lens (L14), fifteenth lens (L15), sixteenth lens (L16), and seventeenth lens (L17) are as follows: 1.81, 2.00, 1.92, 1.70, 1.52, 1.83, 1.85, 1.81, 1.59, 1.59, 1.81, 2.00, 1.81-1.82, 1.69, 1.81, 1.81 and 1.

95.

4. The ultra-large light-transmitting low-light night vision lens according to claim 1, characterized in that, The focal length range of the first lens (L1) is 18.938-18.

954. The focal length range of the second lens (L2) is -51.352 to -51.

096. The focal length range of the third lens (L3) is: -48.770 to -47.

915. The focal length range of the fourth lens (L4) is 31.196-31.

420. The focal length range of the sixth lens (L6) is 140.409-141.

302. The focal length range of the seventh lens (L7) is 297.460-298.

359. The focal length range of the eighth lens (L8) is: -23.429 to -23.

388. The focal length range of the ninth lens (L9) is 36.788-36.

878. The focal length range of the tenth lens (L10) is 34.228-34.

277. The focal length range of the eleventh lens (L11) is: -55.511 to -54.

997. The focal length range of the twelfth lens (L12) is 51.841-51.

969. The focal length range of the thirteenth lens (L13) is 46.252-46.

287. The focal length range of the fourteenth lens (L14) is -16.773 to -16.

741. The focal length range of the fifteenth lens (L15) is -19.435 to -19.

416. The focal length range of the sixteenth lens (L16) is: -149.305 to -143.

285. The focal length range of the seventeenth lens (L17) is 28.908-28.

968.

5. The ultra-large light-transmitting low-light night vision lens according to claim 1, characterized in that, The outer diameters of the first lens (L1), the second lens (L2), the third lens (L3), the fourth lens (L4), the fifth lens (L5), the sixth lens (L6), the seventh lens (L7), the eighth lens (L8), the ninth lens (L9), the tenth lens (L10), the eleventh lens (L11), the twelfth lens (L12), the thirteenth lens (L13), the fourteenth lens (L14), the fifteenth lens (L15), the sixteenth lens (L16), and the seventeenth lens (L17) are all less than 38 mm.

6. The ultra-large light-transmitting low-light night vision lens according to claim 1, characterized in that, The first lens (L1), the second lens (L2), the third lens (L3), the fourth lens (L4), the fifth lens (L5), the sixth lens (L6), the seventh lens (L7), the eighth lens (L8), the ninth lens (L9), the tenth lens (L10), the eleventh lens (L11), the twelfth lens (L12), the thirteenth lens (L13), the fourteenth lens (L14), the fifteenth lens (L15), the sixteenth lens (L16), and the seventeenth lens (L17) are all made of glass.

7. The ultra-large light-transmitting low-light night vision lens according to claim 1, characterized in that, The dispersion coefficients of the first lens (L1), the second lens (L2), the third lens (L3), the fourth lens (L4), the fifth lens (L5), the sixth lens (L6), the seventh lens (L7), the eighth lens (L8), the ninth lens (L9), the tenth lens (L10), the eleventh lens (L11), the twelfth lens (L12), the thirteenth lens (L13), the fourteenth lens (L14), the fifteenth lens (L15), the sixteenth lens (L16), and the seventeenth lens (L17) are 33.3, 25.5, 20.9, 55.5, 64.2, 37.2, 23.8, 33.3, 68.6, 68.6, 25.5, 25.5, 40.9, 31.2, 25.5, 25.5, and 17.9, respectively.

Images