CN113156629A - Ultra-large aperture short wave infrared optical system - Google Patents
Ultra-large aperture short wave infrared optical system Download PDFInfo
- Publication number
- CN113156629A CN113156629A CN202110476442.3A CN202110476442A CN113156629A CN 113156629 A CN113156629 A CN 113156629A CN 202110476442 A CN202110476442 A CN 202110476442A CN 113156629 A CN113156629 A CN 113156629A
- Authority
- CN
- China
- Prior art keywords
- lens
- equal
- optical system
- satisfies
- relation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 42
- 239000011521 glass Substances 0.000 claims abstract description 4
- 230000005499 meniscus Effects 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000005304 optical glass Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000003331 infrared imaging Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/14—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Lenses (AREA)
Abstract
The invention relates to an ultra-large aperture short wave infrared optical system. The device comprises a front lens group, a diaphragm, a rear lens group and a photosensitive chip which are sequentially arranged along the incident direction of light; the focal length of the front lens group is as follows: 30 ~ 80mm, the focus of back mirror group is: 20-50 mm; the front lens group comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged along the incident direction of light; the rear lens group comprises a seventh lens, an eighth lens, a ninth lens, a tenth lens and an eleventh lens which are sequentially arranged along the incident direction of light; the eleven lenses are all made of glass. The invention has high imaging quality and can meet the use requirement of a detector with 4um pixels; the ultra-large aperture can reach F0.9 at most; has the temperature compensation function, and keeps clear imaging in the temperature range of minus 40 ℃ to plus 80 ℃.
Description
Technical Field
The invention relates to the technical field of optical systems, in particular to an ultra-large aperture short-wave infrared optical system.
Background
The short wave infrared is between the near infrared band and the thermal infrared band, and is one of the atmospheric optical windows. The shortwave infrared and the visible light are both light radiation in the surrounding environment reflected by the ground object target, and the similarity enables shortwave infrared images to have abundant detail characteristics and can provide shortwave infrared images with the quality comparable to that of visible light images.
Compared with ultraviolet rays and visible light, the short-wave infrared rays are less scattered by the atmosphere, have stronger diffraction capability on liquid drops and particles in the atmosphere, and can form images in severe atmospheric environments such as fog, haze, smoke dust and the like. The property of being able to transmit conventional optical glass materials is an advantage compared to medium-wave infrared and long-wave infrared. The medium-wave infrared and long-wave infrared optical systems need to use special optical materials such as optical crystals and the like, and the complexity of system design is increased. The advantage of short wave infrared provides more degrees of freedom for the design and optimization of a short wave infrared optical system, the design difficulty of the optical system is greatly reduced, and the cost performance of the system is improved by using a conventional low-cost optical glass material.
The excellent optical characteristics enable the short-wave infrared imaging to have wide application prospect and huge development potential in target detection and identification. In the military field, short wave infrared is suitable for performing all-day and all-weather remote concealed reconnaissance and can be used for identifying a camouflage target and identifying a missile trail; in the civil field, short wave infrared plays an important role in forest fire monitoring, surface mineral resource detection, marine environment monitoring, soil moisture content measurement and the like.
The resolution of the existing short-wave infrared optical system is generally lower than 10um pixel; the aperture only supports F1.4 at most, the detection sensitivity is not high due to insufficient light input quantity, and the method is difficult to be applied to complex detection environments.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an ultra-large aperture short-wave infrared optical system.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an infrared optical system of super large aperture shortwave, includes preceding mirror group and back mirror group, preceding mirror group includes first lens, second lens, third lens, fourth lens, fifth lens and sixth lens, back mirror group includes seventh lens, eighth lens, ninth lens, tenth lens and eleventh lens, first lens, second lens, third lens, fourth lens, fifth lens, sixth lens, seventh lens, eighth lens, ninth lens, tenth lens and eleventh lens set gradually along the optical axis by thing side to picture side, first lens are biconcave negative lens, and the second lens are meniscus negative lens, and the third lens are biconvex positive lens, and the fourth lens are biconvex positive lens.
Further, the fifth lens is a double convex positive lens, and the sixth lens is a double concave negative lens.
Further, the seventh lens element is a biconcave negative lens element, the eighth lens element is a planoconvex lens element, and the ninth lens element is a biconvex positive lens element.
Further, the tenth lens is a double convex positive lens, and the eleventh lens is a double concave negative lens.
Further, the air space between the first lens and the second lens in the front lens group is 5mm to 5.5mm, the air space between the second lens and the third lens is 5.7mm to 5.9mm, the air space between the third lens and the fourth lens is 0.05mm to 0.25mm, the air space between the fourth lens and the fifth lens is 0.05mm to 0.25mm, the air space between the front lens group and the rear lens group is 10mm to 10.5mm, the air space between the seventh lens and the eighth lens is 1.5mm to 1.9mm, the air space between the eighth lens and the ninth lens is 0.05mm to 0.15mm, and the air space between the ninth lens and the tenth lens is 2.5mm to 2.8 mm.
Further, the focal length of the optical system composed of the front lens group and the rear lens group is f, the focal lengths of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are f1, f2, f3, f4, f5 and f6, and the focal lengths of the front lens group f1, f2, f3, f4, (f5+ f6) and f satisfy the following proportions: -2 < f1/f < -1, -5 < f2/f < -3, -2 < f3/f < 3.5, -1 < f4/f < 3, -5 < (f5+ f6)/f < -3.
Further, the focal length of the optical system composed of the front lens group and the rear lens group is f, the focal lengths of the seventh lens element, the eighth lens element, the ninth lens element, the tenth lens element and the eleventh lens element are f7, f8, f9, f10 and f11, respectively, and the focal lengths f7, f8, f9, (f10+ f11) of the rear lens group and f satisfy the following ratio: -1 < f7/f < 1,1 < f8/f < 3,0.5 < f9/f < 2.5,2 < (f10+ f11)/f < 4.
Further, the first lens satisfies the relation: nd is more than or equal to 1.5, and Vd is more than or equal to 64; the second lens satisfies the relation: nd is more than or equal to 1.55, and Vd is more than or equal to 63; the third lens satisfies the relation: nd is more than or equal to 1.75, and Vd is more than or equal to 45; the fourth lens satisfies the relation: nd is more than or equal to 1.75, and Vd is more than or equal to 45; the fifth lens satisfies the relation: nd is more than or equal to 1.55, and Vd is more than or equal to 65; the sixth lens satisfies the relation: nd is more than or equal to 1.7, and Vd is more than or equal to 29; the seventh lens satisfies the relation: nd is more than or equal to 1.7, and Vd is more than or equal to 25; the eighth lens satisfies the relation: nd is more than or equal to 1.55, and Vd is more than or equal to 65; the ninth lens satisfies the relation: nd is more than or equal to 1.8, and Vd is more than or equal to 40; the tenth lens satisfies the relation: nd is more than or equal to 1.9, and Vd is more than or equal to 35; the eleventh lens satisfies the relation: nd is more than or equal to 1.8, and Vd is more than or equal to 20; wherein Nd is a refractive index and Vd is an Abbe constant.
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 and the eleventh lens are made of glass materials
(III) advantageous effects
Compared with the prior art, the invention provides an ultra-large aperture short-wave infrared optical system, which has the following beneficial effects:
the ultra-large aperture short-wave infrared optical system has high imaging quality and can meet the use requirement of a detector with 4um pixels; the ultra-large aperture can reach F0.9 at most; has the temperature compensation function, and keeps clear imaging in the temperature range of minus 40 ℃ to plus 80 ℃.
Drawings
FIG. 1 is a diagram of an optical system of the present invention;
FIG. 2 is a graph of MTF according to the present invention;
FIG. 3 is a distortion diagram of the present invention;
in the figure: 1. a first lens; 2. a second lens; 3. a third lens; 4. a fourth lens; 5. a fifth lens; 6. a sixth lens; 7. a seventh lens; 8. an eighth lens; 9. a ninth lens; 10. a tenth lens; 11. an eleventh lens.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, an ultra-large aperture short wave infrared optical system includes, in order from an object side to an image side along an optical axis, a first lens element 1, a second lens element 2, a third lens element 3, a fourth lens element 4, a fifth lens element 5, a sixth lens element 6, a seventh lens element 7, an eighth lens element 8, a ninth lens element 9, a tenth lens element 10, and an eleventh lens element 11. The eleven lenses are all made of glass. The first lens 1 is a biconcave negative lens, and the second lens 2 is a meniscus negative lens. The third lens element 3 is a biconvex positive lens element, and the fourth lens element 4 is a biconvex positive lens element.
The fifth lens 5 is a biconvex positive lens, the sixth lens 6 is a biconcave negative lens, and the fifth lens 5 and the sixth lens 6 are closely connected to form a lens glue combination.
The first lens element 1 through the sixth lens element 6 constitute a front lens group.
The seventh lens element 7 is a double concave negative lens element, the eighth lens element 8 is a plano-convex lens element, and the ninth lens element 9 is a double convex positive lens element.
The tenth lens element 10 is a biconvex positive lens element, the eleventh lens element 11 is a biconcave negative lens element, and the tenth lens element 10 and the eleventh lens element 11 are closely connected to form a lens assembly.
The seventh to eleventh lenses 11 sixth constitute a rear lens group having positive power.
The air space between the first lens 1 and the second lens 2 in the front lens group is 5.3mm, the air space between the second lens 2 and the third lens 3 is 5.8mm, the air space between the third lens 3 and the fourth lens 4 is 0.1mm, the air space between the fourth lens 4 and the fifth lens 5 is 0.1mm, the air space between the front lens group and the rear lens group is 10.1mm, the air space between the seventh lens 7 and the eighth lens 8 is 1.7mm, the air space between the eighth lens 8 and the ninth lens 9 is 0.1mm, and the air space between the ninth lens 9 and the tenth lens 10 is 2.7 mm.
The focal length of an optical system consisting of the front lens group and the rear lens group is f, the focal lengths of the first lens element 1 and the second lens element 2 are f1 and f2, and the focal lengths of the front lens group and the rear lens group meet the following proportion that f1, f2 and f meet the following proportion:
-3＜f1/f＜-2.5,3＜f2/f＜3.5。
the focal length of an optical system consisting of the front lens group and the rear lens group is f, the focal lengths of the third lens element 3, the fourth lens element 4, the fifth lens element 5, the sixth lens element 6, the seventh lens element 7 and the eighth lens element 8 are f3, f4, f5, f6, f7 and f8 respectively, and the focal length f3, f4, f5, f6, f7, f8 and f of the rear lens group satisfy the following proportions:
4＜(f3+f4)/f＜5,-6.5＜(f5+f6)/f＜-6,
3.5＜f7/f＜4，4.5＜f8/f＜5。
the focal power of the optical system formed by the invention is reasonably distributed according to the proportion, and each lens is in a certain proportion relative to the focal length f of the system, so that the aberration of the optical system formed by the invention is reasonably corrected and balanced.
The first lens 1 satisfies the relation: nd is more than or equal to 1.85, and Vd is more than or equal to 38; the second lens 2 satisfies the relation: nd is more than or equal to 1.85, and Vd is more than or equal to 38; the third lens 3 satisfies the relation: nd is more than or equal to 1.85, and Vd is more than or equal to 20; the fourth lens 4 satisfies the relation: nd is more than or equal to 1.85, and Vd is more than or equal to 38; the fifth lens 5 satisfies the relation: nd is more than or equal to 1.65, and Vd is more than or equal to 30; the sixth lens 6 satisfies the relation: nd is more than or equal to 1.55, and Vd is more than or equal to 68; the seventh lens 7 satisfies the relation: nd is more than or equal to 1.85, and Vd is more than or equal to 38; the eighth lens 8 satisfies the relation: nd is more than or equal to 1.85, and Vd is more than or equal to 38; wherein Nd is refractive index, Vd is Abbe constant, and the specific optical lens group parameters are shown in Table 1.
TABLE 1
In summary, in the ultra-large aperture short-wave infrared optical system, when in use, the first lens element 1, the second lens element 2, the third lens element 3, the fourth lens element 4, the fifth lens element 5, the sixth lens element 6, the seventh lens element 7, the eighth lens element 8, the ninth lens element 9, the tenth lens element 10 and the eleventh lens element 11 are sequentially disposed from the object side to the image side along the optical axis, and the air space between the first lens element 1 and the second lens element 2 is 5.3mm, the air space between the second lens element 2 and the third lens element 3 is 5.8mm, the air space between the third lens element 3 and the fourth lens element 4 is 0.1mm, the air space between the fourth lens element 4 and the fifth lens element 5 is 0.1mm, the air space between the front lens element and the rear lens element is 10.1mm, the air space between the seventh lens element 7 and the eighth lens element 8 is 1.7mm, and the air space between the eighth lens element 8 and the ninth lens element 9 is 0.1mm, the air space between the ninth lens 9 and the tenth lens 10 is 2.7mm, and then the operator places an object on the object side for observation.
In the description herein, it is noted that relational terms such as first and second, and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides an infrared optical system of super large light ring shortwave, includes preceding mirror group and back mirror group, its characterized in that: the front lens group comprises a first lens (1), a second lens (2), a third lens (3), a fourth lens (4), a fifth lens (5) and a sixth lens (6), the rear lens group comprises a seventh lens (7), an eighth lens (8), a ninth lens (9), a tenth lens (10) and an eleventh lens (11), 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) and the eleventh lens (11) are arranged in order from an object side to an image side along an optical axis, the first lens (1) is a biconcave negative lens, the second lens (2) is a meniscus negative lens, the third lens (3) is a biconvex positive lens, and the fourth lens (4) is a biconvex positive lens.
2. The ultra-large aperture short wave infrared optical system of claim 1, which is characterized in that: the fifth lens (5) is a biconvex positive lens, and the sixth lens (6) is a biconcave negative lens.
3. The ultra-large aperture short wave infrared optical system of claim 1, which is characterized in that: the seventh lens (7) is a double-concave negative lens, the eighth lens (8) is a plano-convex lens, and the ninth lens (9) is a double-convex positive lens.
4. The ultra-large aperture short wave infrared optical system of claim 1, which is characterized in that: the tenth lens (10) is a double convex positive lens, and the eleventh lens (11) is a double concave negative lens.
5. The ultra-large aperture short wave infrared optical system of claim 1, which is characterized in that: in the front lens group, the air space between the first lens (1) and the second lens (2) is 5-5.5 mm, the air space between the second lens (2) and the third lens (3) is 5.7-5.9 mm, the air space between the third lens (3) and the fourth lens (4) is 0.05-0.25 mm, the air space between the fourth lens (4) and the fifth lens (5) is 0.05-0.25 mm, the air space between the front lens group and the rear lens group is 10-10.5 mm, the air space between the seventh lens (7) and the eighth lens (8) is 1.5-1.9 mm, the air space between the eighth lens (8) and the ninth lens (9) is 0.05-0.15 mm, and the air space between the ninth lens (9) and the tenth lens (10) is 2.5-2.8 mm.
6. The ultra-large aperture short wave infrared optical system of claim 1, which is characterized in that: the focal length of an optical system consisting of the front lens group and the rear lens group is f, the focal lengths of the first lens (1), the second lens (2), the third lens (3), the fourth lens (4), the fifth lens (5) and the sixth lens (6) are f1, f2, f3, f4, f5 and f6, and the focal lengths f1, f2, f3, f4, (f5+ f6) of the front lens group and f satisfy the following proportions: -2 < f1/f < -1, -5 < f2/f < -3, -2 < f3/f < 3.5, -1 < f4/f < 3, -5 < (f5+ f6)/f < -3.
7. The ultra-large aperture short wave infrared optical system of claim 1, which is characterized in that: the focal length of an optical system consisting of the front lens group and the rear lens group is f, the focal lengths of the seventh lens (7), the eighth lens (8), the ninth lens (9), the tenth lens (10) and the eleventh lens (11) are f7, f8, f9, f10 and f11 respectively, and the focal length f7, f8, f9, (f10+ f11) of the rear lens group and f meet the following proportion: -1 < f7/f < 1,1 < f8/f < 3,0.5 < f9/f < 2.5,2 < (f10+ f11)/f < 4.
8. The ultra-large aperture short wave infrared optical system of claim 1, which is characterized in that: the first lens (1) satisfies the relation: nd is more than or equal to 1.5, and Vd is more than or equal to 64; the second lens (2) satisfies the relation: nd is more than or equal to 1.55, and Vd is more than or equal to 63; the third lens (3) satisfies the relation: nd is more than or equal to 1.75, and Vd is more than or equal to 45; the fourth lens (4) satisfies the relation: nd is more than or equal to 1.75, and Vd is more than or equal to 45; the fifth lens (5) satisfies the relation: nd is more than or equal to 1.55, and Vd is more than or equal to 65; the sixth lens (6) satisfies the relation: nd is more than or equal to 1.7, and Vd is more than or equal to 29; the seventh lens (7) satisfies the relation: nd is more than or equal to 1.7, and Vd is more than or equal to 25; the eighth lens (8) satisfies the relation: nd is more than or equal to 1.55, and Vd is more than or equal to 65; the ninth lens (9) satisfies the relation: nd is more than or equal to 1.8, and Vd is more than or equal to 40; the tenth lens (10) satisfies the relation: nd is more than or equal to 1.9, and Vd is more than or equal to 35; the eleventh lens (11) satisfies the relation: nd is more than or equal to 1.8, and Vd is more than or equal to 20; wherein Nd is a refractive index and Vd is an Abbe constant.
9. The ultra-large aperture short wave infrared optical system of claim 1, which is 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) and the eleventh lens (11) are made of glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110476442.3A CN113156629A (en) | 2021-04-29 | 2021-04-29 | Ultra-large aperture short wave infrared optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110476442.3A CN113156629A (en) | 2021-04-29 | 2021-04-29 | Ultra-large aperture short wave infrared optical system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113156629A true CN113156629A (en) | 2021-07-23 |
Family
ID=76872786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110476442.3A Pending CN113156629A (en) | 2021-04-29 | 2021-04-29 | Ultra-large aperture short wave infrared optical system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113156629A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11337821A (en) * | 1998-05-27 | 1999-12-10 | Nec Corp | Projection lens and projection type display device |
| CN111830671A (en) * | 2019-04-18 | 2020-10-27 | 信泰光学(深圳)有限公司 | Wide-angle lens |
| CN111929849A (en) * | 2020-09-29 | 2020-11-13 | 瑞泰光学(常州)有限公司 | Image pickup optical lens |
| CN112105980A (en) * | 2018-05-18 | 2020-12-18 | 株式会社尼康 | Optical system, optical apparatus, and method of manufacturing optical system |
| CN212302042U (en) * | 2020-05-26 | 2021-01-05 | 广东奥普特科技股份有限公司 | Large-view-field optical lens |
-
2021
- 2021-04-29 CN CN202110476442.3A patent/CN113156629A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11337821A (en) * | 1998-05-27 | 1999-12-10 | Nec Corp | Projection lens and projection type display device |
| CN112105980A (en) * | 2018-05-18 | 2020-12-18 | 株式会社尼康 | Optical system, optical apparatus, and method of manufacturing optical system |
| CN111830671A (en) * | 2019-04-18 | 2020-10-27 | 信泰光学(深圳)有限公司 | Wide-angle lens |
| CN212302042U (en) * | 2020-05-26 | 2021-01-05 | 广东奥普特科技股份有限公司 | Large-view-field optical lens |
| CN111929849A (en) * | 2020-09-29 | 2020-11-13 | 瑞泰光学(常州)有限公司 | Image pickup optical lens |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106405795B (en) | A kind of big visual field object lens of large relative aperture solar blind UV system | |
| CN207216123U (en) | A kind of big focal length salt free ligands face medium-wave infrared double-view field camera lens | |
| CN109343201B (en) | Low-distortion wide-angle long-wave uncooled infrared optical system for optical passive heat difference elimination | |
| CN209198755U (en) | Short-wave infrared continuous zoom lens | |
| CN110568590A (en) | Starlight-level optical lens and imaging method thereof | |
| CN105319669A (en) | Two-wave-band infrared optical system | |
| CN103513409A (en) | Large visual field optical imaging method for guided missile detection and identification and system thereof | |
| CN111025529B (en) | Ultra-small F number medium-long wave infrared fixed-focus lens | |
| CN107797259A (en) | A kind of super clear 4K tight shots of 5.2mm | |
| CN205809394U (en) | Short-wave infrared broadband apochromatism image space telecentricity telephotolens | |
| CN210742599U (en) | Starlight-level optical lens | |
| CN113156629A (en) | Ultra-large aperture short wave infrared optical system | |
| CN114089514B (en) | Refrigeration type medium wave infrared optical system | |
| CN106019534A (en) | 1.3-5um broadband infrared imaging lens | |
| CN114137699B (en) | Small high-resolution athermalized medium-wave infrared optical system | |
| CN118671947A (en) | Ultra-large aperture shortwave infrared optical system with high imaging quality | |
| CN215181172U (en) | Day and night dual-purpose security monitoring lens | |
| CN112083552B (en) | 2.8mm wide-angle day and night confocal lens | |
| CN107092076B (en) | A kind of high pass light quantity compact LONG WAVE INFRARED tight shot | |
| CN109471248B (en) | 3.2mm high-definition ultra-wide-angle lens and working method thereof | |
| CN209979915U (en) | Large-aperture high-resolution light security monitoring infrared lens | |
| CN108152241B (en) | Long-wave infrared imaging optical system | |
| CN106707469A (en) | Infrared shortwave large-field-of-view fisheye optical system | |
| CN106997090B (en) | Large-relative-aperture glimmer television imaging front-mounted objective lens optical system | |
| CN207008165U (en) | A kind of object lens of large relative aperture low-light level television is imaged pre-objective optical system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210723 |