CN211454082U - Large-target-surface high-resolution optical athermalization lens - Google Patents
Large-target-surface high-resolution optical athermalization lens Download PDFInfo
- Publication number
- CN211454082U CN211454082U CN202020007913.7U CN202020007913U CN211454082U CN 211454082 U CN211454082 U CN 211454082U CN 202020007913 U CN202020007913 U CN 202020007913U CN 211454082 U CN211454082 U CN 211454082U
- Authority
- CN
- China
- Prior art keywords
- lens
- meniscus lens
- positive
- negative meniscus
- negative
- 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.)
- Active
Links
Images
Landscapes
- Lenses (AREA)
Abstract
The utility model relates to a big target surface high resolution optics does not have camera lens, invention big target surface high resolution optics does not have camera lens by four lenses, and its optical system has along object plane to image plane in proper order: a negative meniscus lens A, a positive meniscus lens B, a negative meniscus lens C and a double convex positive lens D; the optical system is a large-target-surface high-resolution optical athermalization design and is matched with a 1280x1024@12um uncooled long-wave infrared detector; the refraction/diffraction mixed optical system design combining two infrared materials is adopted, and the aberration of the three-surface aspheric correction system is combined for use, so that the normal use under the high and low temperature environment is realized. The system has simple structure, good manufacturability and easy processing.
Description
The technical field is as follows:
the utility model relates to an optical lens, especially a big target surface high resolution optics do not have camera lens of heating.
Background art:
with the development of infrared optics, each field puts higher requirements on an infrared lens, and compared with a refrigeration type detector, although a non-refrigeration detector has a great difference in sensitivity such as temperature resolution, the non-refrigeration detector also has some outstanding advantages, such as no need of refrigerating the detector, low device cost, low power consumption, light weight, miniaturization, quick start, convenient and flexible use, high cost performance, and the non-refrigeration lens is also low in cost, simple in structure and increasing in market demand increasingly.
At present, the development of high-performance large-area-array uncooled infrared focal plane chips and devices is fast, infrared detector manufacturers also continuously push detectors with larger target surfaces and higher resolution, such as large-target-surface high-resolution detectors like 1024x768@14um, 1280x1024@12um, and the like, most long-wave uncooled infrared lenses in the market can only match detectors like 384x288@17um, @25um or 640x512@17um, and in order to meet the market requirement of the infrared lenses for higher resolution, lenses matched with the high-resolution detectors need to be designed.
The invention content is as follows:
an object of the utility model is to provide a big target surface high resolution optics does not have camera lens, this big target surface high resolution optics does not have camera lens's optics simple structure, easily processing to can keep the picture clear at-40 ℃ - +80 ℃ temperature range, applicable in outdoor camera supervisory equipment.
The utility model discloses big target surface high resolution optics does not have camera lens of heating, its characterized in that: the optical structure of the lens comprises four lenses, and the four lenses are sequentially from an object plane to an image plane: a negative meniscus lens A, a positive meniscus lens B, a negative meniscus lens C and a double convex positive lens D; the surfaces, facing the object side, of the negative meniscus lens A, the positive meniscus lens B and the negative meniscus lens C are convex surfaces, and the surfaces, facing the image side, of the negative meniscus lens A, the positive meniscus lens B and the negative meniscus lens C are concave surfaces; the space between the negative meniscus lens A, the positive meniscus lens B, the negative meniscus lens C and the double convex positive lens D from the object plane to the image plane is as follows: the air space between the negative meniscus lens A and the positive meniscus lens B is 1.20 mm; the air space between the positive meniscus lens B and the negative meniscus lens C is 44.03 mm; the air space between the meniscus negative lens C and the biconvex positive lens D is 4.15 mm; the thicknesses of the negative meniscus lens A, the positive meniscus lens B, the negative meniscus lens C and the double convex positive lens D are respectively 5.3 mm, 7.36 mm, 9.0 mm and 5.79 mm, the focal length of the lens is set to be f, the focal lengths of the optical lenses from the object plane to the image plane are respectively f1, f2, f3 and f4, and the following relations are provided: -6< f1/f < -2, 0.5< f2/f <2.0, -25< f3/f < -20, 0.5< f4/f < 5.
Further, the specific performance parameters of the optical structure are as follows: (1) focal length: EFFL =55mm, (2) F number =1.0, (3) field angle: 2w is more than or equal to 20 degrees, (4) the diameter of an imaging circle is more than phi 19.6, (6) the working spectral range: 8 um-12 um, (7) total optical length TTL is less than or equal to 88mm, optical rear intercept is more than or equal to 10mm, and (8) the lens is suitable for 1280x1024, 12um uncooled long wave infrared detector.
Further, the parallel plate of the optical structure is positioned 8.86 mm behind the lens of the biconvex positive lens D and in front of the IMA item.
Further, the negative meniscus lens a, the positive meniscus lens B, the negative meniscus lens C, and the double convex positive lens D are made of germanium, chalcogenide glass, germanium, and germanium, respectively.
Further, the parameter tables of the above-mentioned negative meniscus lens A, positive meniscus lens B, negative meniscus lens C and double convex positive lens D
| Surface number | Radius of curvature (mm) | Spacing (mm) | Material | Remarks for note |
| S1 | 61.9763 | 5.3 | Germanium (Ge) | |
| S2 | 54.0957 | 1.2 | Diffraction surface | |
| S3 | 48.3391 | 7.36 | Chalcogenide glass | Aspherical surface |
| S4 | 75.3284 | 44.03 | ||
| S5 | 33.0859 | 9.0 | Germanium (Ge) | Aspherical surface |
| S6 | 26.0768 | 4.15 | ||
| S7 | 220.3073 | 5.79 | Germanium (Ge) | Aspherical surface |
| S8 | -338.5532 | 8.86 |
Wherein the data relating to aspherical and diffractive surfaces
 |
 |
 |
 |
|
| Diffraction surface S2 | 1.121E-008 | -8.512E-011 | 2.760E-013 | -1.501E-016 |
| Aspherical surface S3 | -1.503E-007 | -1.893E-010 | 4.062E-013 | -2.536E-016 |
| Aspherical surface S5 | -1.922E-006 | -7.501E-009 | 1.081E-011 | -8.034E-014 |
| Aspherical surface S8 | 2.362E-006 | 1.607E-008 | 2.601E-012 | 2.572E-013 |
The aspheric expression is:
z represents a position in the optical axis direction, r represents a height in the vertical direction with respect to the optical axis, c represents a radius of curvature, k represents a conic coefficient,
、
、
、
represents an aspherical coefficient, and in aspherical data, E-n represents "
", e.g. 1.121E-008 stands for
；
Phase distribution function of diffraction surface in zemax software = M (M: (b))
)：
| M |
 |
 |
|
| Diffraction surface S2 | 1 | -49.47 | -7.95 |
The utility model discloses working method of big target surface high resolution optics does not have camera lens that heats, wherein the optical structure of big target surface high resolution optics does not have camera lens that heats includes four lenses, follows object plane to image plane and is in proper order: a negative meniscus lens A, a positive meniscus lens B, a negative meniscus lens C and a double convex positive lens D; the surfaces, facing the object side, of the negative meniscus lens A, the positive meniscus lens B and the negative meniscus lens C are convex surfaces, and the surfaces, facing the image side, of the negative meniscus lens A, the positive meniscus lens B and the negative meniscus lens C are concave surfaces; the space between the negative meniscus lens A, the positive meniscus lens B, the negative meniscus lens C and the double convex positive lens D from the object plane to the image plane is as follows: the air space between the negative meniscus lens A and the positive meniscus lens B is 1.20 mm; the air space between the positive meniscus lens B and the negative meniscus lens C is 44.03 mm; the air space between the meniscus negative lens C and the biconvex positive lens D is 4.15 mm; the thicknesses of the negative meniscus lens A, the positive meniscus lens B, the negative meniscus lens C and the double convex positive lens D are respectively 5.3 mm, 7.36 mm, 9.0 mm and 5.79 mm, the focal length of the lens is set to be f, the focal lengths of the optical lenses from the object plane to the image plane are respectively f1, f2, f3 and f4, and the following relations are provided: -6< f1/f < -2, 0.5< f2/f <2.0, -25< f3/f < -20, 0.5< f4/f < 5; when the diffraction element works, incident light sequentially passes through the negative meniscus lens A, the positive meniscus lens B, the negative meniscus lens C and the double-convex positive lens D from the object side, the refraction/diffraction mixed optical system is formed by the structure, aberration of the three-sided aspheric correction system is combined, the diffraction element has special heat difference and chromatic aberration performance, under the condition that infrared materials are few, a special infrared material is equivalently added, the diffraction element can be manufactured on the refraction element, the weight of the system is hardly increased, the refraction/diffraction mixed structure is adopted, the long-focus system can be subjected to achromatism and heat difference under the condition that less materials are used, and normal use under high and low temperature environments is realized.
The utility model discloses other camera lenses are compared to big target surface high resolution optics athermalization camera lens, and the advantage that this camera lens possesses has:
a) the system consists of two lenses of germanium and sulfur, and the chromatic aberration and the thermal aberration are corrected by utilizing the diffraction surface without using zinc selenide, so that the lens cost is reduced;
b) the even-order aspheric surface is combined, so that aberration is well balanced, and the image quality is further improved; the sensitivity of each optical element is reduced through the adjustment of the curvature and the thickness, so that the lens is easier to process and adjust.
c) The pixel size is smaller and the resolution is higher when the 1280x1024@12um detector is matched;
d) by adopting the refraction/diffraction mixed design of the combination of two infrared materials and utilizing the special thermal difference and chromatic aberration performance of the diffraction element, the number of the refraction lenses and the use of the infrared material types can be reduced, the weight of the system is reduced, and the athermalization requirement is realized at the same time.
Description of the drawings:
FIG. 1 is an optical block diagram of the present invention;
FIG. 2 shows MTF values in a normal temperature environment;
FIG. 3 is MTF values at low temperature-40 deg.C;
FIG. 4 shows MTF values at 80 ℃ temperature;
FIG. 5 is a distortion diagram of field curvature at normal temperature.
The specific implementation mode is as follows:
the method of the present invention will be described in further detail with reference to examples. It should be noted that the protection scope of the present invention should include, but not be limited to, the technical content disclosed in the present embodiment.
The utility model discloses no camera lens of heating of big target surface high resolution optics, the optical structure of camera lens includes four lenses, follows object plane to image planes and does in proper order: a negative meniscus lens A, a positive meniscus lens B, a negative meniscus lens C and a double convex positive lens D; the surfaces, facing the object side, of the negative meniscus lens A, the positive meniscus lens B and the negative meniscus lens C are convex surfaces, and the surfaces, facing the image side, of the negative meniscus lens A, the positive meniscus lens B and the negative meniscus lens C are concave surfaces; the space between the negative meniscus lens A, the positive meniscus lens B, the negative meniscus lens C and the double convex positive lens D from the object plane to the image plane is as follows: the air space between the negative meniscus lens A and the positive meniscus lens B is 1.20 mm; the air space between the positive meniscus lens B and the negative meniscus lens C is 44.03 mm; the air space between the meniscus negative lens C and the biconvex positive lens D is 4.15 mm; the thicknesses of the negative meniscus lens A, the positive meniscus lens B, the negative meniscus lens C and the double convex positive lens D are respectively 5.3 mm, 7.36 mm, 9.0 mm and 5.79 mm, the focal length of the lens is set to be f, the focal lengths of the optical lenses from the object plane to the image plane are respectively f1, f2, f3 and f4, and the following relations are provided: -6< f1/f < -2, 0.5< f2/f <2.0, -25< f3/f < -20, 0.5< f4/f < 5.
The utility model adopts the design of the refraction/diffraction mixed optical system combined by two infrared materials and combines the three-side aspheric surface correction system aberration, the diffraction element has special heat difference and chromatic aberration performance, under the condition of less infrared materials, the diffraction element is equivalent to adding a special infrared material, the diffraction element can be manufactured on the refraction element, and the system weight is hardly increased; by adopting the refraction/diffraction mixed structure, the long coke system can achieve achromatism and thermal aberration under the condition of using less materials, and can be normally used in high and low temperature environments; the system has simple structure, good manufacturability and easy processing; the sensitivity of each optical piece is reduced by adjusting the curvature and the thickness, so that the lens is easier to process and adjust, can keep a clear picture within the temperature range of minus 40 ℃ to plus 80 ℃, and can be suitable for outdoor camera monitoring equipment and other occasions.
The specific performance parameters of the optical structure are as follows: (1) focal length: EFFL =55mm, (2) F number =1.0, (3) field angle: 2w is more than or equal to 20 degrees, (4) the diameter of an imaging circle is more than phi 19.6, (6) the working spectral range: 8 um-12 um, (7) total optical length TTL is less than or equal to 88mm, optical rear intercept is more than or equal to 10mm, and (8) the lens is suitable for 1280x1024, 12um uncooled long wave infrared detector.
The parallel plate of the optical structure is positioned 8.86 mm behind the lenticular lens D-plate and in front of the IMA project.
The meniscus negative lens A, the meniscus positive lens B, the meniscus negative lens C and the biconvex positive lens D are respectively made of germanium, chalcogenide glass, germanium and germanium.
The system of the utility model adopts two lenses of germanium and chalcogenide, utilizes the diffraction surface to correct chromatic aberration and heat difference, does not need to use zinc selenide, and reduces the cost of the lens;
the parameter tables of the above-mentioned meniscus negative lens A, meniscus positive lens B, meniscus negative lens C and biconvex positive lens D
| Surface number | Radius of curvature (mm) | Spacing (mm) | Material | Remarks for note |
| S1 | 61.9763 | 5.3 | Germanium (Ge) | |
| S2 | 54.0957 | 1.2 | Diffraction surface | |
| S3 | 48.3391 | 7.36 | Chalcogenide glass | Aspherical surface |
| S4 | 75.3284 | 44.03 | ||
| S5 | 33.0859 | 9.0 | Germanium (Ge) | Aspherical surface |
| S6 | 26.0768 | 4.15 | ||
| S7 | 220.3073 | 5.79 | Germanium (Ge) | Aspherical surface |
| S8 | -338.5532 | 8.86 |
Wherein the data relating to aspherical and diffractive surfaces
 |
 |
 |
 |
|
| Diffraction surface S2 | 1.121E-008 | -8.512E-011 | 2.760E-013 | -1.501E-016 |
| Aspherical surface S3 | -1.503E-007 | -1.893E-010 | 4.062E-013 | -2.536E-016 |
| Aspherical surface S5 | -1.922E-006 | -7.501E-009 | 1.081E-011 | -8.034E-014 |
| Aspherical surface S8 | 2.362E-006 | 1.607E-008 | 2.601E-012 | 2.572E-013 |
The aspheric expression is:
z represents a position in the optical axis direction, r represents a height in the vertical direction with respect to the optical axis, c represents a radius of curvature, k represents a conic coefficient,
、
、
、
represents an aspherical coefficient, and in aspherical data, E-n represents "
", e.g. 1.121E-008 stands for
The value of the ellipsis in the Z formula has little influence on the Z value, so the ellipsis is omitted;
phase distribution function of diffraction surface in zemax software = M (M: (b))
)：
| M |
 |
 |
|
| Diffraction surface S2 | 1 | -49.47 | -7.95 |
The utility model discloses working method of big target surface high resolution optics does not have camera lens that heats, wherein the optical structure of big target surface high resolution optics does not have camera lens that heats includes four lenses, follows object plane to image plane and is in proper order: a negative meniscus lens A, a positive meniscus lens B, a negative meniscus lens C and a double convex positive lens D; the surfaces, facing the object side, of the negative meniscus lens A, the positive meniscus lens B and the negative meniscus lens C are convex surfaces, and the surfaces, facing the image side, of the negative meniscus lens A, the positive meniscus lens B and the negative meniscus lens C are concave surfaces; the space between the negative meniscus lens A, the positive meniscus lens B, the negative meniscus lens C and the double convex positive lens D from the object plane to the image plane is as follows: the air space between the negative meniscus lens A and the positive meniscus lens B is 1.20 mm; the air space between the positive meniscus lens B and the negative meniscus lens C is 44.03 mm; the air space between the meniscus negative lens C and the biconvex positive lens D is 4.15 mm; the thicknesses of the negative meniscus lens A, the positive meniscus lens B, the negative meniscus lens C and the double convex positive lens D are respectively 5.3 mm, 7.36 mm, 9.0 mm and 5.79 mm, the focal length of the lens is set to be f, the focal lengths of the optical lenses from the object plane to the image plane are respectively f1, f2, f3 and f4, and the following relations are provided: -6< f1/f < -2, 0.5< f2/f <2.0, -25< f3/f < -20, 0.5< f4/f < 5; when the diffraction element works, incident light sequentially passes through the negative meniscus lens A, the positive meniscus lens B, the negative meniscus lens C and the double-convex positive lens D from the object side, the refraction/diffraction mixed optical system is formed by the structure, aberration of the three-sided aspheric correction system is combined, the diffraction element has special heat difference and chromatic aberration performance, under the condition that infrared materials are few, a special infrared material is equivalently added, the diffraction element can be manufactured on the refraction element, the weight of the system is hardly increased, the refraction/diffraction mixed structure is adopted, the long-focus system can be subjected to achromatism and heat difference under the condition that less materials are used, and normal use under high and low temperature environments is realized.
The utility model discloses other camera lenses are compared to big target surface high resolution optics athermalization camera lens, and the advantage that this camera lens possesses has:
a) the system consists of two lenses of germanium and sulfur, and the chromatic aberration and the thermal aberration are corrected by utilizing the diffraction surface without using zinc selenide, so that the lens cost is reduced;
b) the even-order aspheric surface is combined, so that aberration is well balanced, and the image quality is further improved; the sensitivity of each optical element is reduced through the adjustment of the curvature and the thickness, so that the lens is easier to process and adjust.
c) The pixel size is smaller and the resolution is higher when the 1280x1024@12um detector is matched;
d) by adopting the refraction/diffraction mixed design of the combination of two infrared materials and utilizing the special thermal difference and chromatic aberration performance of the diffraction element, the number of the refraction lenses and the use of the infrared material types can be reduced, the weight of the system is reduced, and the athermalization requirement is realized at the same time.
The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (5)
1. A large-target-surface high-resolution optical athermalization lens is characterized in that: the optical structure of the lens comprises four lenses, and the four lenses are sequentially from an object plane to an image plane: a negative meniscus lens A, a positive meniscus lens B, a negative meniscus lens C and a double convex positive lens D; the surfaces, facing the object side, of the negative meniscus lens A, the positive meniscus lens B and the negative meniscus lens C are convex surfaces, and the surfaces, facing the image side, of the negative meniscus lens A, the positive meniscus lens B and the negative meniscus lens C are concave surfaces; the space between the negative meniscus lens A, the positive meniscus lens B, the negative meniscus lens C and the double convex positive lens D from the object plane to the image plane is as follows: the air space between the negative meniscus lens A and the positive meniscus lens B is 1.20 mm; the air space between the positive meniscus lens B and the negative meniscus lens C is 44.03 mm; the air space between the meniscus negative lens C and the biconvex positive lens D is 4.15 mm; the thicknesses of the negative meniscus lens A, the positive meniscus lens B, the negative meniscus lens C and the double convex positive lens D are respectively 5.3 mm, 7.36 mm, 9.0 mm and 5.79 mm, the focal length of the lens is set to be f, the focal lengths of the optical lenses from the object plane to the image plane are respectively f1, f2, f3 and f4, and the following relations are provided: -6< f1/f < -2, 0.5< f2/f <2.0, -25< f3/f < -20, 0.5< f4/f < 5.
2. The large-target-surface high-resolution optical athermal lens of claim 1, wherein: the specific performance parameters of this optical structure are: (1) focal length: EFFL =55mm, (2) F number =1.0, (3) field angle: 2w is more than or equal to 20 degrees, (4) the diameter of an imaging circle is more than phi 19.6, (6) the working spectral range: 8 um-12 um, (7) total optical length TTL is less than or equal to 88mm, optical rear intercept is more than or equal to 10mm, and (8) the lens is suitable for 1280x1024, 12um uncooled long wave infrared detector.
3. The large-target-surface high-resolution optical athermal lens of claim 1, wherein: the parallel plate of this optical structure is located 8.86 mm behind the lenticular positive lens D-optic and before the IMA item.
4. The large-target-surface high-resolution optical athermal lens of claim 1, wherein: the negative meniscus lens A, the positive meniscus lens B, the negative meniscus lens C and the double convex positive lens D are respectively made of germanium, chalcogenide glass, germanium and germanium.
5. The large-target-surface high-resolution optical athermal lens of claim 1, wherein: the parameter tables of the meniscus negative lens A, the meniscus positive lens B, the meniscus negative lens C and the biconvex positive lens D
Wherein the data relating to aspherical and diffractive surfaces
The aspheric expression is:
z represents a position in the optical axis direction, r represents a height in the vertical direction with respect to the optical axis, c represents a radius of curvature, k represents a conic coefficient,
、
、
、
represents an aspherical coefficient, and in aspherical data, E-n represents "
", e.g. 1.121E-008 stands for
；
Phase distribution function of diffraction surface in zemax software = M (M: (b))
)：
。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020007913.7U CN211454082U (en) | 2020-01-03 | 2020-01-03 | Large-target-surface high-resolution optical athermalization lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020007913.7U CN211454082U (en) | 2020-01-03 | 2020-01-03 | Large-target-surface high-resolution optical athermalization lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211454082U true CN211454082U (en) | 2020-09-08 |
Family
ID=72297623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020007913.7U Active CN211454082U (en) | 2020-01-03 | 2020-01-03 | Large-target-surface high-resolution optical athermalization lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211454082U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110955032A (en) * | 2020-01-03 | 2020-04-03 | 福建福光天瞳光学有限公司 | Large-target-surface high-resolution optical athermalization lens and working method thereof |
| CN114236762A (en) * | 2021-12-22 | 2022-03-25 | 中国电子科技集团公司第十一研究所 | Refrigeration type medium wave infrared athermalization lens and detection assembly |
| CN114690361A (en) * | 2021-12-31 | 2022-07-01 | 福建福光股份有限公司 | Medium wave capturing and tracking system |
-
2020
- 2020-01-03 CN CN202020007913.7U patent/CN211454082U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110955032A (en) * | 2020-01-03 | 2020-04-03 | 福建福光天瞳光学有限公司 | Large-target-surface high-resolution optical athermalization lens and working method thereof |
| CN110955032B (en) * | 2020-01-03 | 2023-07-21 | 福建福光天瞳光学有限公司 | Large-target-surface high-resolution optical athermalized lens and working method thereof |
| CN114236762A (en) * | 2021-12-22 | 2022-03-25 | 中国电子科技集团公司第十一研究所 | Refrigeration type medium wave infrared athermalization lens and detection assembly |
| CN114236762B (en) * | 2021-12-22 | 2024-03-19 | 中国电子科技集团公司第十一研究所 | Refrigeration type medium wave infrared athermalization lens and detection assembly |
| CN114690361A (en) * | 2021-12-31 | 2022-07-01 | 福建福光股份有限公司 | Medium wave capturing and tracking system |
| CN114690361B (en) * | 2021-12-31 | 2023-06-02 | 福建福光股份有限公司 | Medium wave capturing and tracking system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211454082U (en) | Large-target-surface high-resolution optical athermalization lens | |
| CN202275209U (en) | Image acquisition system | |
| CN106154501B (en) | Fish eye lens | |
| CN207216123U (en) | A kind of big focal length salt free ligands face medium-wave infrared double-view field camera lens | |
| CN206906683U (en) | Panoramic shooting camera lens | |
| CN107991763B (en) | High-definition long-focus long-wave infrared lens | |
| CN209182565U (en) | A kind of economical LONG WAVE INFRARED optics is without thermalization camera lens | |
| CN210090814U (en) | Long-focus medium-wave infrared refrigeration double-view-field lens | |
| CN210572970U (en) | Athermal lens of non-refrigeration handheld infrared viewer | |
| CN207216127U (en) | A kind of long-focus long-wave infrared continuous zoom lens | |
| CN212540843U (en) | Portable large-view-field infrared temperature measurement lens | |
| CN110955032B (en) | Large-target-surface high-resolution optical athermalized lens and working method thereof | |
| CN207216116U (en) | One kind miniaturization salt free ligands face medium-wave infrared double-view field camera lens | |
| CN109188656A (en) | A kind of megapixel medium wave refrigeration mode tight shot | |
| CN109932809B (en) | Large-aperture high-resolution light security monitoring infrared lens and working method thereof | |
| CN209167662U (en) | A kind of rifle takes aim at type LONG WAVE INFRARED without thermalization camera lens | |
| CN209979915U (en) | Large-aperture high-resolution light security monitoring infrared lens | |
| CN106019534A (en) | 1.3-5um broadband infrared imaging lens | |
| CN203965714U (en) | A kind of long-focus long-wave infrared continuous zoom lens | |
| CN207216125U (en) | One kind turn back formula medium-wave infrared refrigeration camera lens | |
| CN100334477C (en) | Optical system of large caliber wide viewing field two-rang reflection type infrared camera | |
| CN114609767A (en) | Compact type large-zoom-ratio medium-wave refrigeration infrared continuous zoom lens based on diffraction surface | |
| CN106342269B (en) | A kind of large visual field medium-wave infrared optics athermalism system | |
| CN209182570U (en) | A kind of economical LONG WAVE INFRARED boiler camera lens | |
| CN110346914B (en) | All-glass aspheric large-relative-aperture wide-angle optical lens system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |