Compact short-wave continuous zoom lens with large relative aperture

Abstract

The invention relates to a short-wave lens, in particular to a compact short-wave continuous zoom lens with a large relative aperture, which can be carried on equipment such as a theodolite, a turntable, a pod and the like in cooperation with a short-wave camera, is mainly used for searching and tracking, and solves the problems that the existing fixed-focus lens and the zoom lens with a small relative aperture are limited in actual use, and are difficult to carry. And the requirements of high detection capability, large relative aperture, continuous zooming, searching and tracking are difficult to meet. The invention discloses a compact short-wave continuous zoom lens with a large relative aperture. The compact short-wave continuous zoom lens comprises a focusing group, a zooming group, a compensation group and a rear fixing group which are sequentially arranged from an object side to an image side, the focusing group has positive focal power, and moves back and forth along the optical axis to compensate the defocusing amount caused by temperature change or object distance change; the zoom group has negative focal power, and the maximum moving stroke is 60mm; the compensation group has positive focal power, and the maximum moving stroke is 8mm; and the zooming group and the compensation group move relatively along the optical axis to realize continuous zooming and clear imaging.

Description

Technical Field

[0001] The invention relates to a shortwave lens, in particular to a compact shortwave continuous zoom lens with a large relative aperture, which can be mounted on equipment such as theodolites, turntables, pods, etc. in conjunction with a shortwave camera and is mainly used for searching and tracking. Background Art

[0002] In recent years, with the continuous development of infrared technology, short-wave lenses have been widely used in defense, civil and other fields, and higher requirements have been put forward for related technologies. The atmospheric window contains three bands: 0.9-1.7μm, 3-5μm, and 8-12μm. These three bands have high transmission efficiency in the atmosphere, which can effectively improve the effective distance and detection effect, and are often used in imaging detection and other aspects. Among them, the short-wave lens is in the 0.9-1.7μm short-wave band. It has the characteristics of both visible light and infrared systems, has high sensitivity, and can clearly image in severe weather such as heavy fog.

[0003] Currently, most shortwave lenses are fixed-focus lenses and zoom lenses with small relative apertures. Fixed-focus lenses cannot meet the needs of large-field-of-view search and small-field-of-view tracking and identification, while zoom lenses with small relative apertures have weak detection capabilities when the scene illumination is very low. Therefore, fixed-focus lenses and zoom lenses with small relative apertures are limited in actual use and are difficult to meet the needs of high detection capabilities, large relative apertures, continuous zoom, and search and tracking. Summary of the invention

[0004] The purpose of the present invention is to solve the technical problem that existing fixed-focus lenses and zoom lenses with small relative apertures are limited in actual use and are difficult to meet the requirements of high detection capability, large relative aperture, continuous zoom, and search and tracking. A compact short-wave continuous zoom lens with a large relative aperture is provided.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A compact short-wavelength continuous zoom lens with a large relative aperture, which is special in that it comprises a focus group, a magnification group, a compensation group and a rear fixed group arranged in sequence from the object side to the image side;

[0007] The focusing group includes a first lens, a second lens and a third lens which are arranged in sequence from the object side to the image side; the first lens is a negative meniscus lens with a convex surface facing the object side, the second lens is a double convex positive lens, and the third lens is a positive meniscus lens with a convex surface facing the object side;

[0008] The zoom group includes a fourth lens, a fifth lens and a sixth lens arranged in sequence from the object side to the image side; the fourth lens and the fifth lens are both double concave negative lenses, and the sixth lens is a positive meniscus lens with a convex surface facing the object side;

[0009] The compensation group includes a seventh lens, an eighth lens, a ninth lens and a tenth lens arranged in sequence from the object side to the image side; the seventh lens, the ninth lens and the tenth lens are all biconvex positive lenses, and the eighth lens is a meniscus negative lens with a convex surface facing the object side;

[0010] The rear fixed group includes an eleventh lens, a twelfth lens, a thirteenth lens and a fourteenth lens arranged in sequence from the object side to the image side; the eleventh lens is a double concave negative lens, the twelfth lens is a positive meniscus lens with a convex surface facing the object side, the thirteenth lens is a negative meniscus lens with a convex surface facing the object side, and the fourteenth lens is a double convex positive lens;

[0011] The focusing group has positive optical power, and its movement forward and backward along the optical axis can compensate for the defocus caused by temperature changes or object distance changes; the zoom group has negative optical power, and the maximum movement stroke is 60mm; the compensation group has positive optical power, and the maximum movement stroke is 8mm; the zoom group and the compensation group move relative to each other along the optical axis to achieve continuous zoom and clear imaging.

[0012] Furthermore, the object side of each lens is defined as the front side, and the image side is defined as the back side; the front surface curvature radius R of the first lens is defined as 1前 Meet 605mm≤R 1前 ≤615mm, rear surface curvature radius R 1后 Meet 79mm≤R 1后 ≤85mm; the radius of curvature of the front surface of the second lens R 2前 Meet 81mm≤R 2前 ≤85mm, rear surface curvature radius R 2后 Meet -205mm≤R 2后 ≤-195mm; the front surface curvature radius R of the third lens 3前 Meet 62mm≤R 3前 ≤65mm, rear surface curvature radius R 3后 Meet 320mm≤R 3后 ≤330mm; the front surface curvature radius R of the fourth lens 4前 Meet -360mm≤R 4前 ≤-350mm, rear surface curvature radius R 4后 Meet 20mm≤R 4后 ≤24mm; the front surface curvature radius R of the fifth lens 5前 Meet -80mm≤R 5前 ≤-70mm, rear surface curvature radius R 5后 Meet 45mm≤R 5后 ≤55mm; the radius of curvature of the front surface of the sixth lens R 6前 Meet 40mm≤R 6前 ≤45mm, rear surface curvature radius R 6后 Meet 160mm≤R 6后≤170mm; radius of curvature of the front surface of the seventh lens R 7前 Meet 40mm≤R 7前 ≤45mm, rear surface curvature radius R 7后 Meet -130mm≤R 7后 ≤-120mm; the front surface curvature radius R of the eighth lens 8前 Meet 45mm≤R 8前 ≤50mm, rear surface curvature radius R 8后 Meet 25mm≤R 8后 ≤30mm; the radius of curvature of the front surface of the ninth lens R 9前 Meet 34mm≤R 9前 ≤40mm, rear surface curvature radius R 9后 Meet -150mm≤R 9后 ≤-140mm; the front surface curvature radius R of the tenth lens 10前 Meet 40mm≤R 10前 ≤45mm, rear surface curvature radius R 10后 Meet -145mm≤R 10后 ≤-140mm; the radius of curvature of the front surface of the eleventh lens R 11前 Meet -45mm≤R 11前 ≤-40mm, rear surface curvature radius R 11后 Meet 45mm≤R 11后 ≤50mm; the radius of curvature of the front surface of the twelfth lens R 12前 Meet 12mm≤R 12前 ≤15mm, rear surface curvature radius R 12后 Meet 20mm≤R 12后 ≤25mm; the front surface curvature radius R of the thirteenth lens 13前 Meet 20mm≤R 13前 ≤25mm, rear surface curvature radius R 13后 Meet 8mm≤R 13后 ≤10mm; the front surface curvature radius R of the fourteenth lens 14前 Meet 13mm≤R 14前 ≤16mm, rear surface curvature radius R 14后 Meet -40mm≤R 14后 ≤-35mm.

[0013] Furthermore, the material refractive index n of the first lens is 1 Satisfy 1.84≤n 1 ≤1.86, dispersion coefficient α 1 Satisfy 29≤α 1 ≤30.1; refractive index of the material of the second lens n 2 Satisfy 1.56≤n2 ≤1.57, dispersion coefficient α 2 Satisfy 70≤α 2 ≤72; refractive index of the third lens material n 3 Satisfy 1.56≤n 3 ≤1.57, dispersion coefficient α 3 Satisfy 70≤α 3 ≤72; refractive index of the material of the fourth lens n 4 Satisfy 1.77≤n 4 ≤1.78, dispersion coefficient α 4 Satisfy 49≤α 4 ≤50; refractive index of the material of the fifth lens n 5 Satisfy 1.56≤n 5 ≤1.57, dispersion coefficient α 5 Satisfy 70≤α 5 ≤72; refractive index of the sixth lens material n 6 Satisfy 1.94≤n 6 ≤1.96, dispersion coefficient α 6 Satisfy 17≤α 6 ≤18; refractive index of the seventh lens material n 7 Satisfy 1.4≤n 7 ≤1.5, dispersion coefficient α 7 Satisfy 66≤α 7 ≤68; refractive index of the eighth lens material n 8 Satisfy 1.94≤n 8 ≤1.96, dispersion coefficient α 8 Satisfy 17≤α 8 ≤18; the refractive index of the ninth lens material n 9 Satisfy 1.5≤n 9 ≤1.6, dispersion coefficient α 9 Satisfy 70≤α 9 ≤72; refractive index of the material of the tenth lens n 10 Satisfy 1.5≤n 10 ≤1.6, dispersion coefficient α 10 Satisfy 70≤α 10 ≤72; refractive index of the material of the eleventh lens n 11 Satisfy 1.47≤n 11 ≤1.49, dispersion coefficient α 11 Satisfy 70≤α 11 ≤71; refractive index of the material of the twelfth lens n 12 Satisfy 1.5≤n 12 ≤1.6, dispersion coefficient α 12 Satisfy 70≤α 12 ≤72; refractive index of the material of the thirteenth lens n 13Satisfy 1.94≤n 13 ≤1.96, dispersion coefficient α 13 Satisfy 17≤α 13 ≤18; refractive index of the material of the fourteenth lens n 14 Satisfy 1.5≤n 14 ≤1.6, dispersion coefficient α 14 Satisfy 70≤α 14 ≤72.

[0014] Furthermore, the distance d between the first lens and the second lens is 12 0.2mm≤d 12 ≤2mm; the distance d between the second lens and the third lens 23 0.2mm≤d 23 ≤2mm; the distance d between the third lens and the fourth lens 34 is a variable value, and its value range is 3mm~63mm; the distance d between the fourth lens and the fifth lens 45 4.5mm≤d 45 ≤8.5mm; distance d between the fifth lens and the sixth lens 56 0.1mm≤d 56 ≤1.0mm; the distance between the sixth lens and the seventh lens is d 67 is a variable value, and its value range is 61mm~1.5mm; the distance d between the seventh lens and the eighth lens 78 0.1mm≤d 78 ≤1.0mm; distance d between the eighth lens and the ninth lens 89 0.8mm≤d 89 ≤2.5mm; distance d between the ninth lens and the tenth lens 910 0.1mm≤d 910 ≤1.0mm; distance d between the tenth lens and the eleventh lens 1011 is a variable value, and its value range is 3.3mm~11.3mm; the distance d between the eleventh lens and the twelfth lens 1112 0.1mm≤d 1112 ≤1.0mm; distance d between the twelfth lens and the thirteenth lens 1213 5mm≤d 1213 ≤6mm; distance d between the thirteenth lens and the fourteenth lens 1314 3mm≤d 1314 ≤5mm.

[0015] Furthermore, the focal length of the first lens is 1 Satisfy -120mm≤f 1 ≤-100mm; focal length of the second lens f 2Satisfy 95mm≤f 2 ≤115mm; focal length of the third lens f 3 Satisfy 130mm≤f 3 ≤150mm; focal length of the fourth lens f 4 Satisfy -35mm≤f 4 ≤-30mm; focal length of the fifth lens f 5 Satisfy -60mm≤f 5 ≤-50mm; focal length of the sixth lens f 6 Satisfy 55mm≤f 6 ≤65mm; focal length of the seventh lens f 7 Meet 65mm≤f 7 ≤75mm; focal length of the eighth lens f 8 Satisfy -85mm≤f 8 ≤-75mm; focal length of the ninth lens f 9 Satisfy 45mm≤f 9 ≤55mm; focal length of tenth lens f 10 Satisfy 55mm≤f 10 ≤65mm; focal length of the eleventh lens f 11 Satisfy -55mm≤f 11 ≤-45mm; focal length of the twelfth lens f 12 Satisfy 50mm≤f 12 ≤60mm; focal length of the thirteenth lens f 13 Satisfy -22mm≤f 13 ≤-15mm; focal length of the fourteenth lens f 14 Satisfy 15mm≤f 14 ≤25mm.

[0016] Further, the thickness of the first lens is 4.5 mm; the thickness of the second lens is 14.7 mm; the thickness of the third lens is 11.4 mm; the thickness of the fourth lens is 2.5 mm; the thickness of the fifth lens is 2.5 mm; the thickness of the sixth lens is 4 mm; the thickness of the seventh lens is 5.8 mm; the thickness of the eighth lens is 2.2 mm; the thickness of the ninth lens is 5.6 mm; the thickness of the tenth lens is 4 mm; the thickness of the eleventh lens is 1.5 mm; the thickness of the twelfth lens is 5.1 mm; the thickness of the thirteenth lens is 1.8 mm; and the thickness of the fourteenth lens is 4.8 mm.

[0017] Furthermore, the first lens is made of heavy lanthanum flint glass material; the second lens, the third lens and the fifth lens are all made of heavy phosphorus crown glass material; the fourth lens is made of lanthanum flint glass material; the sixth lens, the eighth lens and the thirteenth lens are all made of heavy flint glass material; the seventh lens is made of quartz crystal material; the ninth lens, the tenth lens, the twelfth lens and the fourteenth lens are all made of heavy phosphorus crown glass material; and the eleventh lens is made of fluorine crown material.

[0018] Furthermore, 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 and the fourteenth lens are all spherical lenses; and the focusing amount of the focusing group is ±2 mm.

[0019] Furthermore, the distance d between the first lens and the second lens is 12 = 0.9 mm, the distance d between the second lens and the third lens 23 =0.5mm; the distance d between the fourth lens and the fifth lens 45 =6.8mm, the distance d between the fifth lens and the sixth lens 56 =0.35mm; the distance d between the seventh lens and the eighth lens 78 =0.3mm, the distance d between the eighth lens and the ninth lens 89 =1.63mm, the distance d between the ninth lens and the tenth lens 910 =0.3mm; the distance d between the eleventh lens and the twelfth lens 1112 = 0.3 mm, the distance d between the twelfth lens and the thirteenth lens 1213 =5.6mm, the distance d between the thirteenth lens and the fourteenth lens 1314 =3.9mm.

[0020] Furthermore, the focal length of the first lens is 1 is -112mm; the focal length of the second lens is f 2 is 104mm; the focal length of the third lens is f 3 is 142mm; the focal length of the fourth lens is f 4 is -31mm; the focal length of the fifth lens is f 5 is -54.7mm; the focal length of the sixth lens is f 6 is 61.7mm; the focal length of the seventh lens is f 7 is 72.1mm; the focal length of the eighth lens is f 8 is -78.7mm; the focal length of the ninth lens is f 9 is 51.2mm; the focal length of the tenth lens is f 10 is 58.8mm; the focal length of the eleventh lens is f 11 is -47.3mm; the focal length of the twelfth lens is f 12 is 52.9mm; the focal length of the thirteenth lens is f 13 is -18.9mm; the focal length of the fourteenth lens is f 14 20.1mm;

[0021] The radius of curvature R of the front surface of the first lens 1前=610mm, rear surface curvature radius R 1后 =80mm; the radius of curvature of the front surface of the second lens R 2前 =82mm, rear surface curvature radius R 2后 =-198mm; the front surface curvature radius R of the third lens 3前 =64mm, rear surface curvature radius R 3后 =327.5mm; the radius of curvature of the front surface of the fourth lens R 4前 =-356.5mm, rear surface curvature radius R 4后 =23mm; the front surface curvature radius R of the fifth lens 5前 =-77.1mm, rear surface curvature radius R 5后 =51.2mm; the front surface curvature radius R of the sixth lens 6前 =41.6mm, rear surface curvature radius R 6后＝ 164.1mm; the radius of curvature of the front surface of the seventh lens R 7前＝ 42.7mm, rear surface curvature radius R 7后＝ -127.5mm; the front surface curvature radius R of the eighth lens 8前＝ 49.5mm, rear surface curvature radius R 8后＝ 28.4mm; the radius of curvature of the front surface of the ninth lens R 9前＝ 35mm, back surface curvature radius R 9后＝ -147mm; the front surface curvature radius R of the tenth lens 10前＝ 42mm, back surface curvature radius R 10后＝ -144.5mm; the radius of curvature of the front surface of the eleventh lens R 11前＝ -43.3mm, rear surface curvature radius R 11后＝ 47mm; the radius of curvature of the front surface of the twelfth lens R 12前＝ 13.7mm, back surface curvature radius R 12后＝ 22mm; the front surface curvature radius R of the thirteenth lens 13前＝ 24.1mm, back surface curvature radius R 13后＝ 9.5mm; the front surface curvature radius R of the fourteenth lens 14前＝ 15.1mm, back surface curvature radius R 14后＝ -39mm.

[0022] Beneficial effects of the present invention:

[0023] 1. The present invention discloses a compact short-wave continuous zoom lens with a large relative aperture. The maximum movement stroke of the zoom group is 60 mm, and the maximum movement stroke of the compensation group is 8 mm. The zoom group and the compensation group move relative to each other along the axial direction, thereby realizing continuous zooming in a focal length of 16 mm to 81 mm, and can perform large field of view search and small field of view tracking and identification.

[0024] 2. The present invention discloses a compact short-wave continuous zoom lens with a large relative aperture, which has a large relative aperture of 1 / 2. The relative aperture is the ratio of the light transmission aperture to the focal length. The larger the value, the greater the light transmission of the system and the higher the sensitivity. The large relative aperture of 1 / 2 can meet the requirements of high resolution.

[0025] 3. The present invention is a compact short-wave continuous zoom lens with a large relative aperture, which adopts a structure in which the zoom group has a negative focal length and the compensation group has a positive focal length, which can reduce the radial size of the system and solve the problem of space limitation in actual use.

[0026] 4. The present invention provides a compact short-wavelength continuous zoom lens with a large relative aperture, the optical envelope of the lens is It has the advantage of compact structure, its operating temperature covers the range of -40℃~+60℃, and the distortion of the whole field of view is less than 3%, which can meet the requirements of clear imaging.

[0027] 5. The present invention is a compact short-wave continuous zoom lens with a large relative aperture. All lenses are spherical lenses, which are easy to process and have excellent performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic structural diagram of a compact short-wavelength continuous zoom lens embodiment of the present invention with a large relative aperture when at a short focal length of 16 mm;

[0029] Figure 2 It is a schematic structural diagram of a compact short-wavelength continuous zoom lens embodiment with a large relative aperture of the present invention when it is at a telephoto focal length of 81 mm;

[0030] Figure 3 This is an MTF curve diagram of a compact short-wavelength continuous zoom lens embodiment with a large relative aperture of the present invention at a short focal length of 16 mm (spatial frequency 33 lp / mm);

[0031] Figure 4 This is an MTF curve diagram of a compact short-wavelength continuous zoom lens embodiment with a large relative aperture of the present invention at a telephoto focal length of 81 mm (spatial frequency 33 lp / mm);

[0032] Figure 5 This is a point diagram of an embodiment of a compact short-wavelength continuous zoom lens with a large relative aperture of the present invention when the focal length is 16 mm;

[0033] Figure 6 This is a point diagram of an embodiment of a compact short-wavelength continuous zoom lens with a large relative aperture of the present invention when it is at a telephoto focal length of 81 mm;

[0034] Figure 7 A field distortion curve of a compact short-wavelength continuous zoom lens embodiment with a large relative aperture of the present invention when the lens is at a short focal length of 16 mm;

[0035] Figure 8 The figure is a field distortion curve of a compact short-wavelength continuous zoom lens with a large relative aperture according to the present invention when the lens is at a telephoto focal length of 81 mm.

[0036] Description of reference numerals:

[0037] 01-focusing group, 1-first lens, 2-second lens, 3-third lens, 02-zooming group, 4-fourth lens, 5-fifth lens, 6-sixth lens, 03-compensation group, 7-seventh lens, 8-eighth lens, 9-ninth lens, 10-tenth lens, 04-rear fixed group, 11-eleventh lens, 12-twelfth lens, 13-thirteenth lens, 14-fourteenth lens. DETAILED DESCRIPTION

[0038] like Figure 1As shown, a compact short-wave continuous zoom lens with a large relative aperture comprises a focusing group 01, a zoom group 02, a compensation group 03 and a rear fixed group 04 arranged in sequence from the object side to the image side; the focusing group 01 comprises a first lens 1, a second lens 2 and a third lens 3 arranged in sequence from the object side to the image side; the first lens 1 is a negative meniscus lens with a convex surface facing the object side, the second lens 2 is a double convex positive lens, and the third lens 3 is a positive meniscus lens with a convex surface facing the object side. The zoom group 02 includes a fourth lens 4, a fifth lens 5 and a sixth lens 6 arranged in sequence from the object side to the image side; the fourth lens 4 and the fifth lens 5 are both double concave negative lenses, and the sixth lens 6 is a positive meniscus lens with a convex surface facing the object side; the compensation group 03 includes a seventh lens 7, an eighth lens 8, a ninth lens 9 and a tenth lens 10 arranged in sequence from the object side to the image side; the seventh lens 7, the ninth lens 9 and the tenth lens 10 are all double convex positive lenses, and the eighth lens 8 is a negative meniscus lens with a convex surface facing the object side; the rear fixed group 04 includes an eleventh lens 11, a twelfth lens 12, a thirteenth lens 13 and a fifth lens 14 arranged in sequence from the object side to the image side. 3 and the fourteenth lens 14; the eleventh lens 11 is a double concave negative lens, the twelfth lens 12 is a positive meniscus lens with the convex surface facing the object, the thirteenth lens 13 is a negative meniscus lens with the convex surface facing the object, and the fourteenth lens 14 is a double convex positive lens; the focusing group 01 has positive optical power and a focusing amount of ±2mm, and its movement forward and backward along the optical axis can compensate for the defocus caused by temperature changes or object distance changes; the zoom group 02 has negative optical power and a maximum movement stroke of 60mm; the compensation group 03 has positive optical power and a maximum movement stroke of 8mm; the zoom group 02 and the compensation group 03 move relative to each other along the optical axis to achieve continuous zoom and clear imaging.

[0039] Preferably, the object side of each lens is defined as the front side, and the image side is defined as the rear side; the front surface curvature radius R of the first lens 1 is 1前 Meet 605mm≤R 1前 ≤615mm, rear surface curvature radius R 1后 Meet 79mm≤R 1后 ≤85mm; the front surface curvature radius R of the second lens 2 2前 Meet 81mm≤R 2前 ≤85mm, rear surface curvature radius R 2后 Meet -205mm≤R 2后 ≤-195mm; the front surface curvature radius R of the third lens 3 3前 Meet 62mm≤R 3前 ≤65mm, rear surface curvature radius R 3后 Meet 320mm≤R 3后 ≤330mm; the front surface curvature radius R of the fourth lens 4 4前 Meet -360mm≤R 4前 ≤-350mm, rear surface curvature radius R 4后Meet 20mm≤R 4后 ≤24mm; the front surface curvature radius R of the fifth lens 5 5前 Meet -80mm≤R 5前 ≤-70mm, rear surface curvature radius R 5后 Meet 45mm≤R 5后 ≤55mm; the front surface curvature radius R of the sixth lens 6 6前 Meet 40mm≤R 6前 ≤45mm, rear surface curvature radius R 6后 Meet 160mm≤R 6后 ≤170mm; the radius of curvature R of the front surface of the seventh lens 7 7前 Meet 40mm≤R 7前 ≤45mm, rear surface curvature radius R 7后 Meet -130mm≤R 7后 ≤-120mm; the front surface curvature radius R of the eighth lens 8 8前 Meet 45mm≤R 8前 ≤50mm, rear surface curvature radius R 8后 Meet 25mm≤R 8后 ≤30mm; the radius of curvature R of the front surface of the ninth lens 9 9前 Meet 34mm≤R 9前 ≤40mm, rear surface curvature radius R 9后 Meet -150mm≤R 9后 ≤-140mm; the front surface curvature radius R of the tenth lens 10 10前 Meet 40mm≤R 10前 ≤45mm, rear surface curvature radius R 10后 Meet -145mm≤R 10后 ≤-140mm; the front surface curvature radius R of the eleventh lens 11 11前 Meet -45mm≤R 11前 ≤-40mm, rear surface curvature radius R 11后 Meet 45mm≤R 11后 ≤50mm; the front surface curvature radius R of the twelfth lens 12 12前 Meet 12mm≤R 12前 ≤15mm, rear surface curvature radius R 12后 Meet 20mm≤R 12后 ≤25mm; the front surface curvature radius R of the thirteenth lens 13 13前 Meet 20mm≤R 13前 ≤25mm, rear surface curvature radius R 13后 Meet 8mm≤R 13后 ≤10mm; the front surface curvature radius R of the fourteenth lens 14 14前Meet 13mm≤R 14前 ≤16mm, rear surface curvature radius R 14后 Meet -40mm≤R 14后 ≤-35mm.

[0040] The refractive index n of the material of the first lens 1 1 Satisfy 1.84≤n 1 ≤1.86, dispersion coefficient α 1 Satisfy 29≤α 1 ≤30.1; the refractive index of the material of the second lens 2 n 2 Satisfy 1.56≤n 2 ≤1.57, dispersion coefficient α 2 Satisfy 70≤α 2 ≤72; refractive index n of the material of the third lens 3 3 Satisfy 1.56≤n 3 ≤1.57, dispersion coefficient α 3 Satisfy 70≤α 3 ≤72; refractive index n of the material of the fourth lens 4 4 Satisfy 1.77≤n 4 ≤1.78, dispersion coefficient α 4 Satisfy 49≤α 4 ≤50; refractive index n of the material of the fifth lens 5 5 Satisfy 1.56≤n 5 ≤1.57, dispersion coefficient α 5 Satisfy 70≤α 5 ≤72; refractive index n of the material of the sixth lens 6 6 Satisfy 1.94≤n 6 ≤1.96, dispersion coefficient α 6 Satisfy 17≤α 6 ≤18; refractive index n of the material of the seventh lens 7 7 Satisfy 1.4≤n 7 ≤1.5, dispersion coefficient α 7 Satisfy 66≤α 7 ≤68; refractive index n of the material of the eighth lens 8 8 Satisfy 1.94≤n 8 ≤1.96, dispersion coefficient α 8 Satisfy 17≤α 8 ≤18; refractive index n of the material of the ninth lens 9 9 Satisfy 1.5≤n 9 ≤1.6, dispersion coefficient α 9 Satisfy 70≤α 9 ≤72; refractive index n of the material of the tenth lens 10 10 Satisfy 1.5≤n 10 ≤1.6, dispersion coefficient α10 Satisfy 70≤α 10 ≤72; refractive index n of the material of the eleventh lens 11 11 Satisfy 1.47≤n 11 ≤1.49, dispersion coefficient α 11 Satisfy 70≤α 11 ≤71; the material refractive index n of the twelfth lens 12 12 Satisfy 1.5≤n 12 ≤1.6, dispersion coefficient α 12 Satisfy 70≤α 12 ≤72; refractive index n of the material of the thirteenth lens 13 13 Satisfy 1.94≤n 13 ≤1.96, dispersion coefficient α 13 Satisfy 17≤α 13 ≤18; the material refractive index n of the fourteenth lens 14 14 Satisfy 1.5≤n 14 ≤1.6, dispersion coefficient α 14 Satisfy 70≤α 14 ≤72.

[0041] The distance d between the first lens 1 and the second lens 2 12 0.2mm≤d 12 ≤2mm; the distance d between the second lens 2 and the third lens 3 23 0.2mm≤d 23 ≤2mm; the distance d between the third lens 3 and the fourth lens 4 34 is a variable value, and its value range is 3mm~63mm; The distance d between the fourth lens 4 and the fifth lens 5 45 4.5mm≤d 45 ≤8.5mm; distance d between the fifth lens 5 and the sixth lens 6 56 0.1mm≤d 56 ≤1.0mm; the distance between the sixth lens 6 and the seventh lens 7 is d 67 is a variable value, and its value range is 61mm~1.5mm; The distance d between the seventh lens 7 and the eighth lens 8 78 0.1mm≤d 78 ≤1.0mm; the distance d between the eighth lens 8 and the ninth lens 9 89 0.8mm≤d 89 ≤2.5mm; the distance d between the ninth lens 9 and the tenth lens 10 910 0.1mm≤d 910 ≤1.0mm; the distance d between the tenth lens 10 and the eleventh lens 11 1011is a variable value, and its value range is 3.3mm~11.3mm; the distance d between the eleventh lens 11 and the twelfth lens 12 1112 0.1mm≤d 1112 ≤1.0mm; the distance d between the twelfth lens 12 and the thirteenth lens 13 1213 5mm≤d 1213 ≤6mm; the distance d between the thirteenth lens 13 and the fourteenth lens 14 1314 3mm≤d 1314 ≤5mm.

[0042] The focal length of the first lens is f 1 Satisfy -120mm≤f 1 ≤-100mm; focal length of second lens 2 f 2 Satisfy 95mm≤f 2 ≤115mm; focal length of the third lens 3 f 3 Satisfy 130mm≤f 3 ≤150mm; fourth lens 4 focal length f 4 Satisfy -35mm≤f 4 ≤-30mm; fifth lens 5 focal length f 5 Satisfy -60mm≤f 5 ≤-50mm; focal length of sixth lens 6 f 6 Satisfy 55mm≤f 6 ≤65mm; seventh lens focal length 7f 7 Meet 65mm≤f 7 ≤75mm; Eighth lens 8 focal length f 8 Satisfy -85mm≤f 8 ≤-75mm; ninth lens 9 focal length f 9 Satisfy 45mm≤f 9 ≤55mm; focal length of tenth lens 10f 10 Satisfy 55mm≤f 10 ≤65mm; focal length of the eleventh lens 11 f 11 Satisfy -55mm≤f 11 ≤-45mm; focal length of the twelfth lens 12 f 12 Satisfy 50mm≤f 12 ≤60mm; 13th lens focal length f 13 Satisfy -22mm≤f 13 ≤-15mm; Fourteenth lens 14 focal length f 14 Satisfy 15mm≤f 14 ≤25mm.

[0043] In this embodiment, the first lens 1 is made of heavy lanthanum flint glass; the second lens 2, the third lens 3 and the fifth lens 5 are all made of heavy phosphorus crown glass, which is mainly used to eliminate chromatic aberration; the fourth lens 4 is made of lanthanum flint glass; the sixth lens 6, the eighth lens 8 and the thirteenth lens 13 are made of the same material, which is heavy flint glass; the seventh lens 7 is made of quartz crystal; the ninth lens 9, the tenth lens 10, the twelfth lens 12 and the fourteenth lens 14 are made of the same material, which is heavy phosphorus crown glass; the eleventh lens 11 is made of fluorine crown material; the first lens 1, the second lens 2, the third lens 3, the fourth lens 4, the fifth lens 5, the sixth lens 6, the seventh lens 7, the eighth lens 8, the ninth lens 9, the tenth lens 10, the eleventh lens 11, the twelfth lens 12, the thirteenth lens 13 and the fourteenth lens 14 are all spherical lenses, which are simple to process and have excellent performance.

[0044] The thickness of the first lens 1 is 4.5 mm; the thickness of the second lens 2 is 14.7 mm; the thickness of the third lens 3 is 11.4 mm; the thickness of the fourth lens 4 is 2.5 mm; the thickness of the fifth lens 5 is 2.5 mm; the thickness of the sixth lens 6 is 4 mm; the thickness of the seventh lens 7 is 5.8 mm; the thickness of the eighth lens 8 is 2.2 mm; the thickness of the ninth lens 9 is 5.6 mm; the thickness of the tenth lens 10 is 4 mm; the thickness of the eleventh lens 11 is 1.5 mm; the thickness of the twelfth lens 12 is 5.1 mm; the thickness of the thirteenth lens 13 is 1.8 mm; and the thickness of the fourteenth lens 14 is 4.8 mm.

[0045] The radius of curvature R of the front surface of the first lens 1 1前 =610mm, rear surface curvature radius R 1后 =80mm; the front surface curvature radius R of the second lens 2 2前 =82mm, rear surface curvature radius R 2后 =-198mm; the front surface curvature radius R of the third lens 3 3前 =64mm, rear surface curvature radius R 3后 =327.5mm; the front surface curvature radius R of the fourth lens 4 4前 =-356.5mm, rear surface curvature radius R 4后 =23mm; the front surface curvature radius R of the fifth lens 5 5前 =-77.1mm, rear surface curvature radius R 5后 =51.2mm; the front surface curvature radius R of the sixth lens 6 6前 =41.6mm, rear surface curvature radius R 6后＝ 164.1 mm; the radius of curvature of the front surface of the seventh lens 7 R 7前＝ 42.7mm, rear surface curvature radius R 7后＝-127.5mm; the front surface curvature radius R of the eighth lens 8 8前＝ 49.5mm, rear surface curvature radius R 8后＝ 28.4 mm; the radius of curvature of the front surface of the ninth lens 9 is R 9前＝ 35mm, back surface curvature radius R 9后＝ -147mm; the front surface curvature radius R of the tenth lens 10 10前＝ 42mm, back surface curvature radius R 10后＝ -144.5 mm; the radius of curvature of the front surface of the eleventh lens 11 is R 11前＝ -43.3mm, rear surface curvature radius R 11后＝ 47mm; the front surface curvature radius R of the twelfth lens 12 12前＝ 13.7mm, back surface curvature radius R 12后＝ 22 mm; the front surface curvature radius R of the thirteenth lens 13 13前＝ 24.1mm, back surface curvature radius R 13后＝ 9.5 mm; the front surface curvature radius R of the fourteenth lens 14 14前＝ 15.1mm, back surface curvature radius R 14后＝ -39mm.

[0046] The distance between the lenses in focus group 01 is: the distance d between the first lens 1 and the second lens 2 12 =0.9mm, it adopts a double-separated lens design, and the positive and negative optical powers are combined to eliminate chromatic aberration; the distance d between the second lens 2 and the third lens 3 23 =0.5mm; the distance between the lenses in zoom group 02 is: the distance between the fourth lens 4 and the fifth lens 5 is d 45 =6.8 mm, the distance d between the fifth lens 5 and the sixth lens 6 56 =0.35mm; the distance between the lenses in compensation group 03 is: the distance between the seventh lens 7 and the eighth lens 8 is d 78 =0.3mm, the distance between the eighth lens 8 and the ninth lens 9 is 1.63mm, and the distance between the ninth lens 9 and the tenth lens 10 is d 910 =0.3mm; the distance between the lenses in the rear fixed group 04 is: the distance between the eleventh lens 11 and the twelfth lens 12 is d 1112 =0.3 mm, the distance d between the twelfth lens 12 and the thirteenth lens 13 1213 =5.6mm, the distance between the thirteenth lens 13 and the fourteenth lens 14 is d 1314=3.9mm; the distance between the third lens 3 and the fourth lens 4 varies between 3mm and 63mm; the distance between the tenth lens 10 and the eleventh lens 11 varies between 3.3mm and 11.3mm, thereby achieving continuous zooming in a focal length of 16mm to 81mm, and enabling large field of view search and small field of view tracking and identification.

[0047] The focal length of the first lens is f 1 -112mm; the focal length of the second lens 2 is f 2 The focal length of the third lens is 104mm. 3 142mm; the focal length of the fourth lens is 4f 4 -31mm; the focal length of the fifth lens is 5f 5 -54.7mm; the focal length of the sixth lens is f6 6 The focal length of the seventh lens is 61.7mm. 7 The focal length of the eighth lens is 72.1mm. 8 The focal length of the ninth lens is -78.7mm. 9 The focal length of the tenth lens is 51.2 mm. 10 is 58.8mm; the focal length of the eleventh lens 11 is f 11 is -47.3mm; the focal length of the twelfth lens is 12 12 52.9mm; the focal length of the thirteenth lens is 13f 13 The focal length of the fourteenth lens is -18.9 mm. 14 It is 20.1mm.

[0048] The thickness of the first lens 1 is 4.5 mm; the thickness of the second lens 2 is 14.7 mm; the thickness of the third lens 3 is 11.4 mm; the thickness of the fourth lens 4 is 2.5 mm; the thickness of the fifth lens 5 is 2.5 mm; the thickness of the sixth lens 6 is 4 mm; the thickness of the seventh lens 7 is 5.8 mm; the thickness of the eighth lens 8 is 2.2 mm; the thickness of the ninth lens 9 is 5.6 mm; the thickness of the tenth lens 10 is 4 mm; the thickness of the eleventh lens 11 is 1.5 mm; the thickness of the twelfth lens 12 is 5.1 mm; the thickness of the thirteenth lens 13 is 1.8 mm; and the thickness of the fourteenth lens 14 is 4.8 mm.

[0049] The present invention discloses a compact short-wave continuous zoom lens with a large relative aperture. Under the premise of satisfying imaging quality, a spherical optical system of 14 lenses is adopted, without a cemented lens, the system focal length is 16 mm to 81 mm, the clear aperture is greater than or equal to 76 mm, the lens length is 180 mm, and the lens has the characteristics of compact structure.

[0050] like Figure 1 , Figure 3As shown in the figure, when the compact short-wavelength continuous zoom lens with large relative aperture is at a short focal length of 16mm and a spatial frequency of 33lp / mm, it can be seen that at the main frequency of 33lp / mm, the 0.7 field of view MTF curve is greater than 0.3, which meets the requirements of clear imaging. Figure 5 It can be seen that the RMS spot size is less than 2x2 pixels.

[0051] like Figure 2 , Figure 4 As shown in the figure, when the compact short-wavelength continuous zoom lens with large relative aperture is at a telephoto of 81mm and a spatial frequency of 33lp / mm, it can be seen that at the main frequency of 33lp / mm, the 0.7 field of view MTF curve is greater than 0.3, which meets the requirements of clear imaging. Figure 6 It can be seen that the RMS spot size is less than 2x2 pixels.

[0052] like Figure 7 , Figure 8 As shown, no matter the compact short-wave continuous zoom lens with large relative aperture is at short focal length 16mm or long focal length 81mm, it can be seen from its field distortion curve that its full field distortion is less than 3%, the image deformation is small, and it can meet the use requirements.

Claims

1. A compact short-wavelength continuous zoom lens with a large relative aperture, characterized in that: It comprises a focus adjustment group (01), a zoom group (02), a compensation group (03) and a rear fixing group (04) which are arranged in sequence from the object side to the image side; The focusing group (01) comprises a first lens (1), a second lens (2) and a third lens (3) which are arranged in sequence from the object side to the image side; the first lens (1) is a negative meniscus lens with a convex surface facing the object side, the second lens (2) is a double convex positive lens, and the third lens (3) is a positive meniscus lens with a convex surface facing the object side; The zoom group (02) comprises a fourth lens (4), a fifth lens (5) and a sixth lens (6) which are arranged in sequence from the object side to the image side; the fourth lens (4) and the fifth lens (5) are both double-concave negative lenses, and the sixth lens (6) is a positive meniscus lens with a convex surface facing the object side; The compensation group (03) comprises a seventh lens (7), an eighth lens (8), a ninth lens (9) and a tenth lens (10) which are arranged in sequence from the object side to the image side; the seventh lens (7), the ninth lens (9) and the tenth lens (10) are all biconvex positive lenses, and the eighth lens (8) is a negative meniscus lens with the convex surface facing the object side; The rear fixed group (04) comprises an eleventh lens (11), a twelfth lens (12), a thirteenth lens (13) and a fourteenth lens (14) arranged in sequence from the object side to the image side; the eleventh lens (11) is a double concave negative lens, the twelfth lens (12) is a positive meniscus lens with a convex surface facing the object side, the thirteenth lens (13) is a negative meniscus lens with a convex surface facing the object side, and the fourteenth lens (14) is a double convex positive lens; The focusing group (01) has a positive optical focal length, and its movement forward and backward along the optical axis can compensate for the defocus caused by temperature changes or object distance changes; the zoom group (02) has a negative optical focal length, and its maximum movement stroke is 60 mm; the compensation group (03) has a positive optical focal length, and its maximum movement stroke is 8 mm; the zoom group (02) and the compensation group (03) move relative to each other along the optical axis to achieve continuous zoom and clear imaging.

2. The compact short-wavelength continuous zoom lens with large relative aperture according to claim 1, characterized in that: Define each lens' object side as the front and image side as the back; The radius of curvature R of the front surface of the first lens (1) 1前 Meet 605mm≤R 1前 ≤615mm, rear surface curvature radius R 1后 Meet 79mm≤R 1后 ≤85mm; The radius of curvature R of the front surface of the second lens (2) 2前 Meet 81mm≤R 2前 ≤85mm, rear surface curvature radius R 2后 Meet -205mm≤R 2后 ≤-195mm; The front surface curvature radius R of the third lens (3) 3前 Meet 62mm≤R 3前 ≤65mm, rear surface curvature radius R 3后 Meet 320mm≤R 3后 ≤330mm; The front surface curvature radius R of the fourth lens (4) 4前 Meet -360mm≤R 4前 ≤-350mm, rear surface curvature radius R 4后 Meet 20mm≤R 4后 ≤24mm; The front surface curvature radius R of the fifth lens (5) 5前 Meet -80mm≤R 5前 ≤-70mm, rear surface curvature radius R 5后 Meet 45mm≤R 5后 ≤55mm; The front surface curvature radius R of the sixth lens (6) 6前 Meet 40mm≤R 6前 ≤45mm, rear surface curvature radius R 6后 Meet 160mm≤R 6后 ≤170mm; The radius of curvature R of the front surface of the seventh lens (7) 7前 Meet 40mm≤R 7前 ≤45mm, rear surface curvature radius R 7后 Meet -130mm≤R 7后 ≤-120mm; The front surface curvature radius R of the eighth lens (8) 8前 Meet 45mm≤R 8前 ≤50mm, rear surface curvature radius R 8后 Meet 25mm≤R 8后 ≤30mm; The front surface curvature radius R of the ninth lens (9) 9前 Meet 34mm≤R 9前 ≤40mm, rear surface curvature radius R 9后 Meet -150mm≤R 9后 ≤-140mm; The front surface curvature radius R of the tenth lens (10) 10前 Meet 40mm≤R 10前 ≤45mm, rear surface curvature radius R 10后 Meet -145mm≤R 10后 ≤-140mm; The front surface curvature radius R of the eleventh lens (11) 11前 Meet -45mm≤R 11前 ≤-40mm, rear surface curvature radius R 11后 Meet 45mm≤R 11后 ≤50mm; The front surface curvature radius R of the twelfth lens (12) 12前 Meet 12mm≤R 12前 ≤15mm, rear surface curvature radius R 12后 Meet 20mm≤R 12后 ≤25mm; The front surface curvature radius R of the thirteenth lens (13) 13前 Meet 20mm≤R 13前 ≤25mm, rear surface curvature radius R 13后 Meet 8mm≤R 13后 ≤10mm; The front surface curvature radius R of the fourteenth lens (14) 14前 Meet 13mm≤R 14前 ≤16mm, rear surface curvature radius R 14后 Meet -40mm≤R 14后 ≤-35mm.

3. The compact short-wavelength continuous zoom lens with large relative aperture according to claim 2, characterized in that: The material refractive index n1 of the first lens (1) satisfies 1.84≤n1≤1.86, and the dispersion coefficient α1 satisfies 29≤α1≤30.1; The material refractive index n2 of the second lens (2) satisfies 1.56≤n2≤1.57, and the dispersion coefficient α2 satisfies 70≤α2≤72; The material refractive index n3 of the third lens (3) satisfies 1.56≤n3≤1.57, and the dispersion coefficient α3 satisfies 70≤α3≤72; The material refractive index n4 of the fourth lens (4) satisfies 1.77≤n4≤1.78, and the dispersion coefficient α4 satisfies 49≤α4≤50; The material refractive index n5 of the fifth lens (5) satisfies 1.56≤n5≤1.57, and the dispersion coefficient α5 satisfies 70≤α5≤72; The material refractive index n6 of the sixth lens (6) satisfies 1.94≤n6≤1.96, and the dispersion coefficient α6 satisfies 17≤α6≤18; The material refractive index n7 of the seventh lens (7) satisfies 1.4≤n7≤1.5, and the dispersion coefficient α7 satisfies 66≤α7≤68; The material refractive index n8 of the eighth lens (8) satisfies 1.94≤n8≤1.96, and the dispersion coefficient α8 satisfies 17≤α8≤18; The material refractive index n9 of the ninth lens (9) satisfies 1.5≤n9≤1.6, and the dispersion coefficient α9 satisfies 70≤α9≤72; The material refractive index n of the tenth lens (10) is 10 Satisfy 1.5≤n 10 ≤1.6, dispersion coefficient α 10 Satisfy 70≤α 10 ≤72; The material refractive index n of the eleventh lens (11) is 11 Satisfy 1.47≤n 11 ≤1.49, dispersion coefficient α 11 Satisfy 70≤α 11 ≤71; The material refractive index n of the twelfth lens (12) is 12 Satisfy 1.5≤n 12 ≤1.6, dispersion coefficient α 12 Satisfy 70≤α 12 ≤72; The material refractive index n of the thirteenth lens (13) is 13 Satisfy 1.94≤n 13 ≤1.96, dispersion coefficient α 13 Satisfy 17≤α 13 ≤18; The material refractive index n of the fourteenth lens (14) is 14 Satisfy 1.5≤n 14 ≤1.6, dispersion coefficient α 14 Satisfy 70≤α 14 ≤72.

4. The compact short-wavelength continuous zoom lens with large relative aperture according to claim 3, characterized in that: The distance d between the first lens (1) and the second lens (2) is 12 0.2mm≤d 12 ≤2mm; The distance d between the second lens (2) and the third lens (3) is 23 0.2mm≤d 23 ≤2mm; The distance d between the third lens (3) and the fourth lens (4) is 34 It is a variable value, and its value range is 3mm~63mm; The distance d between the fourth lens (4) and the fifth lens (5) is 45 4.5mm≤d 45 ≤8.5mm; The distance d between the fifth lens (5) and the sixth lens (6) is 56 0.1mm≤d 56 ≤1.0mm; The distance between the sixth lens (6) and the seventh lens (7) is d 67 It is a variable value, and its value range is 61mm~1.5mm; The distance d between the seventh lens (7) and the eighth lens (8) is 78 0.1mm≤d 78 ≤1.0mm; The distance d between the eighth lens (8) and the ninth lens (9) is 89 0.8mm≤d 89 ≤2.5mm; The distance d between the ninth lens (9) and the tenth lens (10) is 910 0.1mm≤d 910 ≤1.0mm; The distance d between the tenth lens (10) and the eleventh lens (11) is 1011 It is a variable value, and its value range is 3.3mm~11.3mm; The distance d between the eleventh lens (11) and the twelfth lens (12) is 1112 0.1mm≤d 1112 ≤1.0mm; The distance d between the twelfth lens (12) and the thirteenth lens (13) is 1213 5mm≤d 1213 ≤6mm; The distance d between the thirteenth lens (13) and the fourteenth lens (14) is 1314 3mm≤d 1314 ≤5mm.

5. The compact short-wavelength continuous zoom lens with large relative aperture according to claim 4, characterized in that: The focal length f1 of the first lens (1) satisfies -120mm≤f1≤-100mm; The focal length f2 of the second lens (2) satisfies 95 mm ≤ f2 ≤ 115 mm; The focal length f3 of the third lens (3) satisfies 130 mm ≤ f3 ≤ 150 mm; The focal length f4 of the fourth lens (4) satisfies -35mm≤f4≤-30mm; The focal length f5 of the fifth lens (5) satisfies -60mm≤f5≤-50mm; The focal length f6 of the sixth lens (6) satisfies 55 mm ≤ f6 ≤ 65 mm; The focal length f7 of the seventh lens (7) satisfies 65 mm ≤ f7 ≤ 75 mm; The focal length f8 of the eighth lens (8) satisfies -85mm≤f8≤-75mm; The focal length f9 of the ninth lens (9) satisfies 45 mm ≤ f9 ≤ 55 mm; The focal length of the tenth lens (10) is f 10 Satisfy 55mm≤f 10 ≤65mm; The focal length of the eleventh lens (11) is f 11 Satisfy -55mm≤f 11 ≤-45mm; The focal length of the twelfth lens (12) is f 12 Satisfy 50mm≤f 12 ≤60mm; The focal length of the thirteenth lens (13) is f 13 Satisfy -22mm≤f 13 ≤-15mm; The focal length of the fourteenth lens (14) is f 14 Satisfy 15mm≤f 14 ≤25mm.

6. The compact short-wavelength continuous zoom lens with large relative aperture according to claim 5, characterized in that: The thickness of the first lens (1) is 4.5 mm; the thickness of the second lens (2) is 14.7 mm; the thickness of the third lens (3) is 11.4 mm; the thickness of the fourth lens (4) is 2.5 mm; the thickness of the fifth lens (5) is 2.5 mm; the thickness of the sixth lens (6) is 4 mm; the thickness of the seventh lens (7) is 5.8 mm; the thickness of the eighth lens (8) is 2.2 mm; the thickness of the ninth lens (9) is 5.6 mm; the thickness of the tenth lens (10) is 4 mm; the thickness of the eleventh lens (11) is 1.5 mm; the thickness of the twelfth lens (12) is 5.1 mm; the thickness of the thirteenth lens (13) is 1.8 mm; and the thickness of the fourteenth lens (14) is 4.8 mm.

7. The compact short-wavelength continuous zoom lens with large relative aperture according to claim 6, characterized in that: The first lens (1) is made of heavy lanthanum flint glass material; The second lens (2), the third lens (3) and the fifth lens (5) are all made of heavy phosphorus crown glass material; The fourth lens (4) is made of lanthanum flint glass material; The sixth lens (6), the eighth lens (8) and the thirteenth lens (13) are all made of heavy flint glass; The seventh lens (7) is made of quartz crystal material; The ninth lens (9), the tenth lens (10), the twelfth lens (12) and the fourteenth lens (14) are all made of heavy phosphorus crown glass material; The eleventh lens (11) is made of fluorine crown material.

8. The compact short-wavelength continuous zoom lens with large relative aperture according to any one of claims 1 to 7, characterized in that: The first lens (1), the second lens (2), the third lens (3), the fourth lens (4), the fifth lens (5), the sixth lens (6), the seventh lens (7), the eighth lens (8), the ninth lens (9), the tenth lens (10), the eleventh lens (11), the twelfth lens (12), the thirteenth lens (13) and the fourteenth lens (14) are all spherical lenses; The focusing amount of the focusing group (01) is ±2 mm.

9. The compact short-wavelength continuous zoom lens with large relative aperture according to claim 8, characterized in that: The distance d between the first lens (1) and the second lens (2) is 12 = 0.9 mm, the distance d between the second lens (2) and the third lens (3) 23 =0.5mm; The distance d between the fourth lens (4) and the fifth lens (5) is 45 = 6.8 mm, the distance d between the fifth lens (5) and the sixth lens (6) 56 =0.35mm; The distance d between the seventh lens (7) and the eighth lens (8) is 78 = 0.3 mm, the distance d between the eighth lens (8) and the ninth lens (9) 89 =1.63 mm, the distance d between the ninth lens (9) and the tenth lens (10) 910 =0.3mm; The distance d between the eleventh lens (11) and the twelfth lens (12) is 1112 = 0.3 mm, the distance d between the twelfth lens (12) and the thirteenth lens (13) 1213 =5.6 mm, the distance d between the thirteenth lens (13) and the fourteenth lens (14) 1314 =3.9mm.

10. The compact short-wavelength continuous zoom lens with large relative aperture according to claim 9, characterized in that: The focal length f1 of the first lens (1) is -112 mm; the focal length f2 of the second lens (2) is 104 mm; the focal length f3 of the third lens (3) is 142 mm; the focal length f4 of the fourth lens (4) is -31 mm; the focal length f5 of the fifth lens (5) is -54.7 mm; the focal length f6 of the sixth lens (6) is 61.7 mm; the focal length f7 of the seventh lens (7) is 72.1 mm; the focal length f8 of the eighth lens (8) is -78.7 mm; the focal length f9 of the ninth lens (9) is 51.2 mm; the focal length f10 of the tenth lens (10) is 142 mm; the focal length f2 of the third lens (3) is 142 mm; the focal length f3 of the fourth lens (4) is -31 mm; the focal length f5 of the fifth lens (5) is -54.7 mm; the focal length f6 of the sixth lens (6) is 61.7 mm; the focal length f7 of the seventh lens (7) is 72.1 mm; the focal length f8 of the eighth lens (8) is -78.7 mm; the focal length f9 of the ninth lens (9) is 51.2 mm; the focal length f 10 is 58.8mm; the focal length of the eleventh lens (11) is f 11 is -47.3mm; the focal length of the twelfth lens (12) is f 12 is 52.9 mm; the focal length of the thirteenth lens (13) is f 13 is -18.9 mm; the focal length of the fourteenth lens (14) is f 14 20.1mm; The radius of curvature R of the front surface of the first lens (1) 1前 =610mm, rear surface curvature radius R 1后 =80mm; the radius of curvature of the front surface of the second lens (2) R 2前 =82mm, rear surface curvature radius R 2后 = -198mm; the front surface curvature radius R of the third lens (3) 3前 =64mm, rear surface curvature radius R 3后 =327.5 mm; the front surface curvature radius R of the fourth lens (4) 4前 =-356.5mm, rear surface curvature radius R 4后 =23mm; the front surface curvature radius R of the fifth lens (5) 5前 =-77.1mm, rear surface curvature radius R 5后 =51.2 mm; the radius of curvature of the front surface of the sixth lens (6) R 6前 =41.6mm, rear surface curvature radius R 6后＝ 164.1 mm; the radius of curvature of the front surface of the seventh lens (7) R 7前＝ 42.7mm, rear surface curvature radius R 7后＝ -127.5 mm; the radius of curvature of the front surface of the eighth lens (8) R 8前＝ 49.5mm, rear surface curvature radius R 8后＝ 28.4 mm; the radius of curvature of the front surface of the ninth lens (9) R 9前＝ 35mm, back surface curvature radius R 9后＝ -147mm; the front surface curvature radius R of the tenth lens (10) 10前＝ 42mm, back surface curvature radius R 10后＝ -144.5 mm; the radius of curvature of the front surface of the eleventh lens (11) R 11前＝ -43.3mm, rear surface curvature radius R 11后＝ 47 mm; the front surface curvature radius R of the twelfth lens (12) 12前＝ 13.7mm, back surface curvature radius R 12后＝ 22 mm; the front surface curvature radius R of the thirteenth lens (13) 13前＝ 24.1mm, back surface curvature radius R 13后＝ 9.5 mm; the front surface curvature radius R of the fourteenth lens (14) 14前＝ 15.1mm, back surface curvature radius R 14后＝ -39mm.

Images