CN110955032B - Large-target-surface high-resolution optical athermalized lens and working method thereof - Google Patents
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- 230000003287 optical effect Effects 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims description 14
- 230000005499 meniscus Effects 0.000 claims abstract description 155
- 239000000463 material Substances 0.000 claims abstract description 20
- 230000004075 alteration Effects 0.000 claims abstract description 13
- 229910052732 germanium Inorganic materials 0.000 claims description 21
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 21
- 239000005387 chalcogenide glass Substances 0.000 claims description 6
- 239000011295 pitch Substances 0.000 claims description 6
- 238000005315 distribution function Methods 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 claims description 3
- 238000001228 spectrum Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 description 4
- PFNQVRZLDWYSCW-UHFFFAOYSA-N (fluoren-9-ylideneamino) n-naphthalen-1-ylcarbamate Chemical compound C12=CC=CC=C2C2=CC=CC=C2C1=NOC(=O)NC1=CC=CC2=CC=CC=C12 PFNQVRZLDWYSCW-UHFFFAOYSA-N 0.000 description 3
- 150000004770 chalcogenides Chemical class 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
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- G—PHYSICS
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- 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
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- 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
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- 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
- G02B1/02—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of crystals, e.g. rock-salt, semi-conductors
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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Abstract
The invention relates to a large target surface high resolution optical athermalization lens, which consists of four lenses, wherein an optical system of the lens sequentially comprises the following components from an object surface to an image surface: a meniscus negative lens A, a meniscus positive lens B, a meniscus negative lens C, a biconvex positive lens D; the optical system is designed for large target surface high resolution optics without heating, and is matched with 1280x1024@12um uncooled long wave infrared detectors; the refraction/diffraction mixed optical system design of the combination of the two infrared materials is adopted, and three-surface aspheric surfaces are combined to correct the aberration of the system, so that the system can be normally used in a high-low temperature environment. The system has the advantages of simple structure, good manufacturability and easy processing.
Description
Technical field:
the invention relates to an optical lens, in particular to a large-target-surface high-resolution optical athermalized lens and a working method thereof.
The background technology is as follows:
with the development of infrared optics, each field puts forward higher requirements on an infrared lens, and compared with a refrigeration type detector, although the uncooled detector has a great difference in sensitivity aspects such as temperature resolution, the uncooled detector also has some outstanding advantages, such as no need of refrigerating the detector, low device cost, low power consumption, light weight, miniaturization, quick starting, convenient and flexible use, high cost performance, simple structure and increasingly-increased market demand of the uncooled lens due to low cost.
The development of the present high-performance large-area array uncooled infrared focal plane chip and device is rapid, infrared detector manufacturers continuously push out larger target surface and higher-resolution detectors, such as 1024x768@14um, 1280x1024@12um and other large target surface high-resolution detectors, and most of the long-wave uncooled infrared lenses on the market can only be matched with the detectors such as 384x288@17um, @25um or 640x512@17um, so as to meet the market demand of higher resolution of the infrared lenses, and the lenses matched with the high-resolution detectors need to be designed.
The invention comprises the following steps:
the invention aims to provide a large-target-surface high-resolution optical athermalization lens and a working method thereof, wherein the large-target-surface high-resolution optical athermalization lens has a simple optical structure, is easy to process, can keep a clear picture within a temperature range of-40 ℃ to +80 ℃, and is suitable for outdoor camera monitoring equipment.
The invention relates to a large target surface high resolution optical athermalization lens, which is characterized in that: the optical structure of the lens comprises four lenses, and the lens comprises the following components in sequence from an object plane to an image plane: a meniscus negative lens a, a meniscus positive lens B, a meniscus negative lens C, and a biconvex positive lens D; the surfaces of the meniscus negative lens A, the meniscus positive lens B and the meniscus negative lens C facing the object side are convex surfaces, and the surfaces of the meniscus negative lens A, the meniscus positive lens B and the meniscus negative lens C facing the image side are concave surfaces; the pitches of the four lenses from the object surface to the image surface of the meniscus negative lens A, the meniscus positive lens B, the meniscus negative lens C and the biconvex positive lens D are as follows: the air interval between the negative meniscus lens A and the positive meniscus lens B is 1.20mm; the air interval between the positive meniscus lens B and the negative meniscus lens C is 44.03mm; the air interval between the meniscus negative lens C and the biconvex positive lens D is 4.15mm; the thicknesses of the meniscus negative lens a, the meniscus positive lens B, the meniscus negative lens C and the biconvex positive lens D are 5.3 mm, 7.36 mm, 9.0 mm and 5.79 mm respectively, the focal lengths of the lenses are set to be f, and the focal lengths of the optical lenses from the object surface to the image surface are sequentially f1, f2, f3 and f4, and have the following relationship with each other: -6< f1/f < -2,0.5< f2/f <2.0, -25< f3/f < -20,0.5< f4/f <5.
Further, specific performance parameters of the optical structure are as follows: (1) focal length: effl=55 mm, (2) F number=1.0, (3) angle of view: 2w is more than or equal to 20 degrees, (4) the imaging circle diameter is more than phi 19.6, (6) the working spectrum range: 8 um-12 um, (7) the total optical length TTL is less than or equal to 88mm, the optical back intercept is more than or equal to 10mm, and (8) the lens is suitable for 1280x1024 and 12um uncooled long wave infrared detectors.
Further, the parallel plate of the optical structure is located 8.86 mm behind the biconvex positive lens D-optic and in front of the IMA project.
Further, the meniscus negative lens a, the meniscus positive lens B, the meniscus negative lens C, and the biconvex positive lens D are made of germanium, chalcogenide glass, germanium, and germanium, respectively.
Further, the parameter table of the above-mentioned meniscus negative lens A, meniscus positive lens B, meniscus negative lens C and biconvex positive lens D
| Surface serial number | Radius of curvature (mm) | Interval (mm) | Material | Remarks |
| S1 | 61.9763 | 5.3 | Germanium (Ge) | |
| S2 | 54.0957 | 1.2 | Diffraction plane | |
| 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 the aspherical surface and the diffraction surface
| Diffraction plane 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 aspherical expression is:
z represents the position in the direction of the optical axis, r represents the height in the direction perpendicular to the optical axis, c represents the radius of curvature, k represents the conic coefficient,、/>、/>、/>represents an aspherical coefficient, and E-n represents "+_in the aspherical data>", e.g. 1.121E-008 represents +.>；
Phase distribution function of diffraction plane in zemax software=m #)：
| M | |||
| Diffraction plane S2 | 1 | -49.47 | -7.95 |
The invention relates to a working method of a large target surface high-resolution optical athermalization lens, wherein the optical structure of the large target surface high-resolution optical athermalization lens comprises four lenses, and the working method sequentially comprises the following steps from an object surface to an image surface: a meniscus negative lens a, a meniscus positive lens B, a meniscus negative lens C, and a biconvex positive lens D; the surfaces of the meniscus negative lens A, the meniscus positive lens B and the meniscus negative lens C facing the object side are convex surfaces, and the surfaces of the meniscus negative lens A, the meniscus positive lens B and the meniscus negative lens C facing the image side are concave surfaces; the pitches of the four lenses from the object surface to the image surface of the meniscus negative lens A, the meniscus positive lens B, the meniscus negative lens C and the biconvex positive lens D are as follows: the air interval between the negative meniscus lens A and the positive meniscus lens B is 1.20mm; the air interval between the positive meniscus lens B and the negative meniscus lens C is 44.03mm; the air interval between the meniscus negative lens C and the biconvex positive lens D is 4.15mm; the thicknesses of the meniscus negative lens a, the meniscus positive lens B, the meniscus negative lens C and the biconvex positive lens D are 5.3 mm, 7.36 mm, 9.0 mm and 5.79 mm respectively, the focal lengths of the lenses are set to be f, and the focal lengths of the optical lenses from the object surface to the image surface are sequentially f1, f2, f3 and f4, and have the following relationship with each other: -6< f1/f < -2,0.5< f2/f <2.0, -25< f3/f < -20,0.5< f4/f <5; when the refraction/diffraction optical system works, incident light rays sequentially pass through the meniscus negative lens A, the meniscus positive lens B, the meniscus negative lens C and the biconvex positive lens D from the object side, the refraction/diffraction mixed optical system is formed by the structure, and three-face aspheric surface is used for correcting system aberration in a combined mode, the diffraction element has special thermal difference and chromatic difference performance, under the condition that infrared materials are fewer, the diffraction element is equivalent to a special infrared material, 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, achromatism and thermal difference can be achieved under the condition that the material is fewer, and normal use under the environment of high temperature and low temperature is achieved.
Compared with other lenses, the large-target-surface high-resolution optical athermalized lens has the advantages that:
a) The system is composed of germanium and a chalcogenide lens, chromatic aberration and thermal difference are corrected by using a diffraction surface, zinc selenide is not needed, and lens cost is reduced;
b) The even aspherical surface is used in combination, so that aberration is well balanced, and image quality is further improved; the sensitivity of each optical piece is reduced through the adjustment of curvature and thickness, so that the lens is easier to process and adjust.
c) The pixel size is smaller and the resolution is higher by matching 1280x1024@12um detectors;
d) The refraction/diffraction mixed design of two infrared materials is adopted, the special thermal difference and chromatic aberration performance of the diffraction element are utilized, the number of the refraction lens can be reduced, the use of infrared materials is reduced, the weight of the system is reduced, and the athermalization requirement is realized.
Description of the drawings:
FIG. 1 is an optical block diagram of the present invention;
FIG. 2 is the MTF values in a normal temperature environment;
FIG. 3 is the MTF values at low temperature-40 ℃;
FIG. 4 is the MTF values in a high temperature 80℃environment;
fig. 5 is a graph of field curvature distortion at normal temperature.
The specific embodiment is as follows:
the process according to the invention is described in further detail below with reference to examples. It should be specifically noted that the protection scope of the present invention should include but not limited to the technical content disclosed in the present embodiment.
The invention relates to a large target surface high resolution optical athermalization lens, the optical structure of the lens comprises four lenses, and the lens comprises the following components in sequence from an object surface to an image surface: a meniscus negative lens a, a meniscus positive lens B, a meniscus negative lens C, and a biconvex positive lens D; the surfaces of the meniscus negative lens A, the meniscus positive lens B and the meniscus negative lens C facing the object side are convex surfaces, and the surfaces of the meniscus negative lens A, the meniscus positive lens B and the meniscus negative lens C facing the image side are concave surfaces; the pitches of the four lenses from the object surface to the image surface of the meniscus negative lens A, the meniscus positive lens B, the meniscus negative lens C and the biconvex positive lens D are as follows: the air interval between the negative meniscus lens A and the positive meniscus lens B is 1.20mm; the air interval between the positive meniscus lens B and the negative meniscus lens C is 44.03mm; the air interval between the meniscus negative lens C and the biconvex positive lens D is 4.15mm; the thicknesses of the meniscus negative lens a, the meniscus positive lens B, the meniscus negative lens C and the biconvex positive lens D are 5.3 mm, 7.36 mm, 9.0 mm and 5.79 mm respectively, the focal lengths of the lenses are set to be f, and the focal lengths of the optical lenses from the object surface to the image surface are sequentially f1, f2, f3 and f4, and have the following relationship with each other: -6< f1/f < -2,0.5< f2/f <2.0, -25< f3/f < -20,0.5< f4/f <5.
The invention adopts the design of a refraction/diffraction mixed optical system with two infrared materials combined, and combines three-sided aspheric surfaces to correct the aberration of the system, the diffraction element has special thermal difference and chromatic aberration performance, and under the condition of less infrared materials, the invention is equivalent to adding a special infrared material, the diffraction element can be manufactured on the refraction element, and the weight of the system is hardly increased; the adoption of the refraction/diffraction mixed structure can enable the long-focus system to achieve achromatism and thermal difference under the condition of using less materials, and normal use under high and low temperature environments is realized; the system has simple structure, good manufacturability and easy processing; the sensitivity of each optical piece is reduced through the adjustment of curvature and thickness, so that the lens is easier to process and adjust, can keep a clear picture in a temperature range of-40 ℃ to +80 ℃, and can be applied to outdoor camera monitoring equipment and other occasions.
The specific performance parameters of the optical structure are as follows: (1) focal length: effl=55 mm, (2) F number=1.0, (3) angle of view: 2w is more than or equal to 20 degrees, (4) the imaging circle diameter is more than phi 19.6, (6) the working spectrum range: 8 um-12 um, (7) the total optical length TTL is less than or equal to 88mm, the optical back intercept is more than or equal to 10mm, and (8) the lens is suitable for 1280x1024 and 12um uncooled long wave infrared detectors.
The parallel plate of the optical structure described above is located 8.86 mm behind the biconvex positive lens D-optic 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 provided by the invention is composed of germanium and a sulfur system, and the diffraction surface is used for correcting chromatic aberration and thermal difference, so that zinc selenide is not needed, and the cost of the lens is reduced;
parameter table of the above-mentioned meniscus negative lens A, meniscus positive lens B, meniscus negative lens C and biconvex positive lens D
| Surface serial number | Radius of curvature (mm) | Interval (mm) | Material | Remarks |
| S1 | 61.9763 | 5.3 | Germanium (Ge) | |
| S2 | 54.0957 | 1.2 | Diffraction plane | |
| 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 the aspherical surface and the diffraction surface
| Diffraction plane 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 aspherical expression is:
z represents the position in the direction of the optical axis, r represents the height in the direction perpendicular to the optical axis, c represents the radius of curvature, k represents the conic coefficient,、/>、/>、/>represents an aspherical coefficient, and E-n represents "+_in the aspherical data>", e.g. 1.121E-008 represents +.>The value of the ellipsis in the above formula has less influence on the Z value, and is omitted;
phase distribution function of diffraction plane in zemax software=m #)：
| M | |||
| Diffraction plane S2 | 1 | -49.47 | -7.95 |
The invention relates to a working method of a large target surface high-resolution optical athermalization lens, wherein the optical structure of the large target surface high-resolution optical athermalization lens comprises four lenses, and the working method sequentially comprises the following steps from an object surface to an image surface: a meniscus negative lens a, a meniscus positive lens B, a meniscus negative lens C, and a biconvex positive lens D; the surfaces of the meniscus negative lens A, the meniscus positive lens B and the meniscus negative lens C facing the object side are convex surfaces, and the surfaces of the meniscus negative lens A, the meniscus positive lens B and the meniscus negative lens C facing the image side are concave surfaces; the pitches of the four lenses from the object surface to the image surface of the meniscus negative lens A, the meniscus positive lens B, the meniscus negative lens C and the biconvex positive lens D are as follows: the air interval between the negative meniscus lens A and the positive meniscus lens B is 1.20mm; the air interval between the positive meniscus lens B and the negative meniscus lens C is 44.03mm; the air interval between the meniscus negative lens C and the biconvex positive lens D is 4.15mm; the thicknesses of the meniscus negative lens a, the meniscus positive lens B, the meniscus negative lens C and the biconvex positive lens D are 5.3 mm, 7.36 mm, 9.0 mm and 5.79 mm respectively, the focal lengths of the lenses are set to be f, and the focal lengths of the optical lenses from the object surface to the image surface are sequentially f1, f2, f3 and f4, and have the following relationship with each other: -6< f1/f < -2,0.5< f2/f <2.0, -25< f3/f < -20,0.5< f4/f <5; when the refraction/diffraction optical system works, incident light rays sequentially pass through the meniscus negative lens A, the meniscus positive lens B, the meniscus negative lens C and the biconvex positive lens D from the object side, the refraction/diffraction mixed optical system is formed by the structure, and three-face aspheric surface is used for correcting system aberration in a combined mode, the diffraction element has special thermal difference and chromatic difference performance, under the condition that infrared materials are fewer, the diffraction element is equivalent to a special infrared material, 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, achromatism and thermal difference can be achieved under the condition that the material is fewer, and normal use under the environment of high temperature and low temperature is achieved.
Compared with other lenses, the large-target-surface high-resolution optical athermalized lens has the advantages that:
a) The system is composed of germanium and a chalcogenide lens, chromatic aberration and thermal difference are corrected by using a diffraction surface, zinc selenide is not needed, and lens cost is reduced;
b) The even aspherical surface is used in combination, so that aberration is well balanced, and image quality is further improved; the sensitivity of each optical piece is reduced through the adjustment of curvature and thickness, so that the lens is easier to process and adjust.
c) The pixel size is smaller and the resolution is higher by matching 1280x1024@12um detectors;
d) The refraction/diffraction mixed design of two infrared materials is adopted, the special thermal difference and chromatic aberration performance of the diffraction element are utilized, the number of the refraction lens can be reduced, the use of infrared materials is reduced, the weight of the system is reduced, and the athermalization requirement is realized.
The foregoing description is only of the preferred embodiments of the invention, and all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (5)
1. A large target surface high resolution optical athermalization lens is characterized in that: the optical structure of the lens consists of four lenses, and the order from the object surface to the image surface is as follows: a meniscus negative lens a, a meniscus positive lens B, a meniscus negative lens C, and a biconvex positive lens D; the surfaces of the meniscus negative lens A, the meniscus positive lens B and the meniscus negative lens C facing the object side are convex surfaces, and the surfaces of the meniscus negative lens A, the meniscus positive lens B and the meniscus negative lens C facing the image side are concave surfaces; the pitches of the four lenses from the object surface to the image surface of the meniscus negative lens A, the meniscus positive lens B, the meniscus negative lens C and the biconvex positive lens D are as follows: the air interval between the negative meniscus lens A and the positive meniscus lens B is 1.20mm; the air interval between the positive meniscus lens B and the negative meniscus lens C is 44.03mm; the air interval between the meniscus negative lens C and the biconvex positive lens D is 4.15mm; the thicknesses of the meniscus negative lens a, the meniscus positive lens B, the meniscus negative lens C and the biconvex positive lens D are 5.3 mm, 7.36 mm, 9.0 mm and 5.79 mm respectively, the focal lengths of the lenses are set to be f, and the focal lengths of the optical lenses from the object surface to the image surface are sequentially f1, f2, f3 and f4, and have the following relationship with each other: -6< f1/f < -2,0.5< f2/f <2.0, -25< f3/f < -20,0.5< f4/f <5, the image plane of the meniscus negative lens a being a diffraction plane; 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.
2. The large target surface high resolution optical athermalized lens according to claim 1, wherein: the specific performance parameters of the optical structure are as follows: (1) focal length: f=55 mm, (2) F number=1.0, (3) field angle: 2w is more than or equal to 20 degrees, (4) the imaging circle diameter is more than phi 19.6, (6) the working spectrum range: 8 um-12 um, (7) the total optical length TTL is less than or equal to 88mm, the optical back intercept is more than or equal to 10mm, and (8) the lens is suitable for 1280x1024 and 12um uncooled long wave infrared detectors.
3. The large target surface high resolution optical athermalized lens according to claim 1, wherein: the parallel plate of this optical structure is located 8.86 mm behind the biconvex positive lens D-optic and in front of the IMA project.
4. The large target surface high resolution optical athermalized lens according to claim 1, wherein: parameter table 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 the aspherical surface and the diffraction surface
The aspherical expression is:
z represents the position in the direction of the optical axis, r represents the height in the direction perpendicular to the optical axis, c represents the radius of curvature, k represents the conic coefficient,、/>、/>、/>represents an aspherical coefficient, and E-n represents "+_in the aspherical data>”；
Phase distribution function of diffraction plane in zemax software=m #)：
。
5. The working method of the large target surface high-resolution optical athermalization lens comprises the following steps of: a meniscus negative lens a, a meniscus positive lens B, a meniscus negative lens C, and a biconvex positive lens D; the surfaces of the meniscus negative lens A, the meniscus positive lens B and the meniscus negative lens C facing the object side are convex surfaces, and the surfaces of the meniscus negative lens A, the meniscus positive lens B and the meniscus negative lens C facing the image side are concave surfaces; the pitches of the four lenses from the object surface to the image surface of the meniscus negative lens A, the meniscus positive lens B, the meniscus negative lens C and the biconvex positive lens D are as follows: the air interval between the negative meniscus lens A and the positive meniscus lens B is 1.20mm; the air interval between the positive meniscus lens B and the negative meniscus lens C is 44.03mm; the air interval between the meniscus negative lens C and the biconvex positive lens D is 4.15mm; the thicknesses of the meniscus negative lens a, the meniscus positive lens B, the meniscus negative lens C and the biconvex positive lens D are 5.3 mm, 7.36 mm, 9.0 mm and 5.79 mm respectively, the focal lengths of the lenses are set to be f, and the focal lengths of the optical lenses from the object surface to the image surface are sequentially f1, f2, f3 and f4, and have the following relationship with each other: -6< f1/f < -2,0.5< f2/f <2.0, -25< f3/f < -20,0.5< f4/f <5; the image surface of the meniscus negative lens A is a diffraction surface; 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; when the refraction/diffraction optical system works, incident light rays sequentially pass through the meniscus negative lens A, the meniscus positive lens B, the meniscus negative lens C and the biconvex positive lens D from the object side, the refraction/diffraction mixed optical system is formed by the structure, and three-face aspheric surface is used for correcting system aberration in a combined mode, the diffraction element has special thermal difference and chromatic difference performance, under the condition that infrared materials are fewer, the diffraction element is equivalent to a special infrared material, 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, achromatism and thermal difference can be achieved under the condition that the material is fewer, and normal use under the environment of high temperature and low temperature is achieved.
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| CN202010004654.7A CN110955032B (en) | 2020-01-03 | 2020-01-03 | Large-target-surface high-resolution optical athermalized lens and working method thereof |
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| CN202010004654.7A CN110955032B (en) | 2020-01-03 | 2020-01-03 | Large-target-surface high-resolution optical athermalized lens and working method thereof |
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| CN110955032B true CN110955032B (en) | 2023-07-21 |
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| CN111929865B (en) * | 2020-08-26 | 2022-05-20 | 河南平原光电有限公司 | High-resolution long-wave uncooled athermalized telephoto lens |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH063586A (en) * | 1992-06-18 | 1994-01-14 | Asahi Optical Co Ltd | Optical recording lens |
| JPH0627368A (en) * | 1990-10-09 | 1994-02-04 | Thomson Trt Defense | Infrared ray objective device |
| JP2002196233A (en) * | 2000-12-26 | 2002-07-12 | Nikon Corp | Infrared optical system and infrared optical device provided with the same |
| JP2004053633A (en) * | 2002-07-16 | 2004-02-19 | Olympus Corp | Imaging apparatus |
| WO2007010928A1 (en) * | 2005-07-20 | 2007-01-25 | Alps Electric Co., Ltd. | Optical device |
| JP2009145809A (en) * | 2007-12-18 | 2009-07-02 | Fujinon Corp | Image pickup lens and image pickup apparatus |
| CN102621674A (en) * | 2011-01-27 | 2012-08-01 | 株式会社理光 | Zoom lens, camera and portable information terminal unit |
| WO2012147358A1 (en) * | 2011-04-28 | 2012-11-01 | 富士フイルム株式会社 | Imaging lens and imaging device |
| CN202735579U (en) * | 2011-08-18 | 2013-02-13 | 昆明物理研究所 | Uncooled long-wave infrared ultra-wide-angle fisheye lens |
| WO2014132317A1 (en) * | 2013-02-28 | 2014-09-04 | 富士フイルム株式会社 | Imaging lens and imaging device |
| CN205679846U (en) * | 2016-04-21 | 2016-11-09 | 凤凰光学安防（上海）有限公司 | A kind of safety monitoring camera lens |
| CN207216121U (en) * | 2017-08-22 | 2018-04-10 | 北京蓝思泰克科技有限公司 | A kind of large aperture wide-angle LONG WAVE INFRARED tight shot |
| CN208110150U (en) * | 2018-05-07 | 2018-11-16 | 南京波长光电科技股份有限公司 | A kind of large format LONG WAVE INFRARED PASSIVE OPTICAL athermal fish eye lens |
| CN109445069A (en) * | 2018-12-18 | 2019-03-08 | 福建福光天瞳光学有限公司 | Economical infrared no thermalization camera lens and imaging method |
| CN109471249A (en) * | 2018-12-28 | 2019-03-15 | 福建福光天瞳光学有限公司 | Ultra-wide angle athermalism system and imaging method |
| CN109471240A (en) * | 2018-12-13 | 2019-03-15 | 福建福光天瞳光学有限公司 | A kind of focal length infrared optics athermalism system |
| CN109932809A (en) * | 2019-04-18 | 2019-06-25 | 福建福光股份有限公司 | The light-duty safety monitoring infrared lens of large aperture high-resolution and its working method |
| CN110262000A (en) * | 2019-06-28 | 2019-09-20 | 湖南戴斯光电有限公司 | A kind of miniaturization focal length fog penetration lens and optoelectronic device |
| CN211454082U (en) * | 2020-01-03 | 2020-09-08 | 福建福光天瞳光学有限公司 | Large-target-surface high-resolution optical athermalization lens |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI443407B (en) * | 2011-12-27 | 2014-07-01 | Asia Optical Co Inc | Miniature projection lens |
-
2020
- 2020-01-03 CN CN202010004654.7A patent/CN110955032B/en active Active
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0627368A (en) * | 1990-10-09 | 1994-02-04 | Thomson Trt Defense | Infrared ray objective device |
| JPH063586A (en) * | 1992-06-18 | 1994-01-14 | Asahi Optical Co Ltd | Optical recording lens |
| JP2002196233A (en) * | 2000-12-26 | 2002-07-12 | Nikon Corp | Infrared optical system and infrared optical device provided with the same |
| JP2004053633A (en) * | 2002-07-16 | 2004-02-19 | Olympus Corp | Imaging apparatus |
| WO2007010928A1 (en) * | 2005-07-20 | 2007-01-25 | Alps Electric Co., Ltd. | Optical device |
| JP2009145809A (en) * | 2007-12-18 | 2009-07-02 | Fujinon Corp | Image pickup lens and image pickup apparatus |
| CN102621674A (en) * | 2011-01-27 | 2012-08-01 | 株式会社理光 | Zoom lens, camera and portable information terminal unit |
| WO2012147358A1 (en) * | 2011-04-28 | 2012-11-01 | 富士フイルム株式会社 | Imaging lens and imaging device |
| CN202735579U (en) * | 2011-08-18 | 2013-02-13 | 昆明物理研究所 | Uncooled long-wave infrared ultra-wide-angle fisheye lens |
| WO2014132317A1 (en) * | 2013-02-28 | 2014-09-04 | 富士フイルム株式会社 | Imaging lens and imaging device |
| CN205679846U (en) * | 2016-04-21 | 2016-11-09 | 凤凰光学安防（上海）有限公司 | A kind of safety monitoring camera lens |
| CN207216121U (en) * | 2017-08-22 | 2018-04-10 | 北京蓝思泰克科技有限公司 | A kind of large aperture wide-angle LONG WAVE INFRARED tight shot |
| CN208110150U (en) * | 2018-05-07 | 2018-11-16 | 南京波长光电科技股份有限公司 | A kind of large format LONG WAVE INFRARED PASSIVE OPTICAL athermal fish eye lens |
| CN109471240A (en) * | 2018-12-13 | 2019-03-15 | 福建福光天瞳光学有限公司 | A kind of focal length infrared optics athermalism system |
| CN109445069A (en) * | 2018-12-18 | 2019-03-08 | 福建福光天瞳光学有限公司 | Economical infrared no thermalization camera lens and imaging method |
| CN109471249A (en) * | 2018-12-28 | 2019-03-15 | 福建福光天瞳光学有限公司 | Ultra-wide angle athermalism system and imaging method |
| CN109932809A (en) * | 2019-04-18 | 2019-06-25 | 福建福光股份有限公司 | The light-duty safety monitoring infrared lens of large aperture high-resolution and its working method |
| CN110262000A (en) * | 2019-06-28 | 2019-09-20 | 湖南戴斯光电有限公司 | A kind of miniaturization focal length fog penetration lens and optoelectronic device |
| CN211454082U (en) * | 2020-01-03 | 2020-09-08 | 福建福光天瞳光学有限公司 | Large-target-surface high-resolution optical athermalization lens |
Non-Patent Citations (2)
| Title |
|---|
| 大面阵长波红外光学无热化镜头的设计;陈潇;;红外技术(第11期);全文 * |
| 新型长波红外折衍混合消热差系统;郜洪云;陈梦苇;杨应平;陈彻;郑盼;;光子学报(第12期);全文 * |
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