CN109491058A - A kind of f50mm high transmittance optics is without thermalization camera lens and its assembly method - Google Patents
A kind of f50mm high transmittance optics is without thermalization camera lens and its assembly method Download PDFInfo
- Publication number
- CN109491058A CN109491058A CN201811645625.8A CN201811645625A CN109491058A CN 109491058 A CN109491058 A CN 109491058A CN 201811645625 A CN201811645625 A CN 201811645625A CN 109491058 A CN109491058 A CN 109491058A
- Authority
- CN
- China
- Prior art keywords
- crescent moon
- moon lens
- lens
- mirror surface
- negative crescent
- 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.)
- Granted
Links
- 238000002834 transmittance Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 13
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 96
- 230000003287 optical effect Effects 0.000 claims abstract description 12
- 238000003825 pressing Methods 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 12
- 229910052732 germanium Inorganic materials 0.000 claims description 6
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 239000005387 chalcogenide glass Substances 0.000 claims description 2
- 238000009738 saturating Methods 0.000 claims description 2
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 229920001800 Shellac Polymers 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- ZLGIYFNHBLSMPS-ATJNOEHPSA-N shellac Chemical compound OCCCCCC(O)C(O)CCCCCCCC(O)=O.C1C23[C@H](C(O)=O)CCC2[C@](C)(CO)[C@@H]1C(C(O)=O)=C[C@@H]3O ZLGIYFNHBLSMPS-ATJNOEHPSA-N 0.000 description 1
- 229940113147 shellac Drugs 0.000 description 1
- 235000013874 shellac Nutrition 0.000 description 1
- 239000004208 shellac Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000001931 thermography Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/026—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using retaining rings or springs
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Lenses (AREA)
- Lens Barrels (AREA)
Abstract
The present invention relates to a kind of f50mm high transmittance optics without thermalization camera lens and its assembly method, the optical system of the camera lens includes along light incident direction is set gradually from front to back negative crescent moon lens A, positive crescent moon lens B and negative crescent moon lens C, airspace between negative crescent moon lens A and positive crescent moon lens B is 1.15mm, and the airspace between positive crescent moon lens B and negative crescent moon lens C is 37.17mm；The radius of curvature of mirror surface is 43.25mm before negative crescent moon lens A, and the radius of curvature of rear mirror surface is 37.2mm, with a thickness of 5mm；The radius of curvature of mirror surface is 36.5mm before positive crescent moon lens B, and the radius of curvature of rear mirror surface is 53.41mm, with a thickness of 6.8mm；The radius of curvature of mirror surface is 40.27mm before negative crescent moon lens C, and the radius of curvature of rear mirror surface is 38.96mm, with a thickness of 7.1mm.The lens construction is simple, overall volume is small, easy to carry, easy assembly, and high transmittance has optics without thermalization effect in optical design, and cost of manufacture is cheap, is easily assembled, and is suitble to large-scale production.
Description
Technical field
The present invention relates to a kind of f50mm high transmittance optics without thermalization camera lens and its assembly method.
Background technique
From the 1990s, non-refrigeration type thermal infrared imager has quickly entered application market, red with refrigeration-type
Outer thermal imaging system is compared, Uncooled infrared camera have high reliablity, at low cost, small power consumption, light-weight, miniaturization, starting it is fast,
The advantages that easy to use and flexible.Compared with visible light security lens, infrared acquisition penetrates the energy such as cigarette, mist, haze, snow with certain
Power and the ability of identification camouflage, are not interfered and blinding by the strong light in battlefield, flash of light, remote, round-the-clock observation may be implemented, especially
It is suitable for the target acquisitions under night and bad-weather condition.And un-cooled infrared focal plane array technology is by small-scale
In developing to, it is extensive, pixel has also narrowed down to 17 μm or even 12 μm by 50 μm, its resolution ratio and sensitivity significantly improves
?.So with the development of science and technology, infrared imagery technique has been widely used in fields such as national defence, industry, medical treatment.
Since the sense radiosusceptibility of non-refrigeration type infrared detector is lower, temperature not only can be to the refractive index of optical material
Impact also can cause to expand with heat and contract with cold to lens barrel material, and power variation and optimum image plane is caused to shift, and reduce optics
Image quality, image is smudgy, contrast decline, the final imaging performance for influencing camera lens.
Summary of the invention
In view of this, being easily assembled the object of the present invention is to provide a kind of structure is simple, the high f50mm high of image quality is saturating
Rate optics is crossed without thermalization camera lens and its assembly method.
The present invention is realized using following scheme: a kind of f50mm high transmittance optics is without thermalization camera lens, the optics of the camera lens
System include along light incident direction is set gradually from front to back negative crescent moon lens A, positive crescent moon lens B and negative crescent moon lens C,
Airspace between negative crescent moon lens A and positive crescent moon lens B is 1.15mm, between positive crescent moon lens B and negative crescent moon lens C
Airspace is 37.17mm；The radius of curvature of mirror surface is 43.25mm before negative crescent moon lens A, and the radius of curvature of rear mirror surface is
37.2mm, with a thickness of 5mm；The radius of curvature of mirror surface is 36.5mm before positive crescent moon lens B, and the radius of curvature of rear mirror surface is
53.41mm with a thickness of 6.8mm；The radius of curvature of mirror surface is 40.27mm before negative crescent moon lens C, and the radius of curvature of rear mirror surface is
38.96mm with a thickness of 7.1mm.
Further, the material of the negative crescent moon lens A is germanium, and the material of the positive crescent moon lens B is chalcogenide glass, institute
The material for stating negative crescent moon lens C is germanium.
Further, the mechanical structure of the camera lens includes that inside is equipped with negative crescent moon lens A, positive crescent moon lens B and bears
The body tube of crescent moon lens C, the body tube inner peripheral portion is provided with head on positive crescent moon lens B after mirror surface outer edge stage, bear
Crescent moon lens A and positive crescent moon lens B are provided with spacer ring, and mirror surface outer rim before pressing against negative crescent moon lens A is provided in the body tube
First pressing ring in portion, the primary mirror tube rear end is provided with head on negative crescent moon lens C after mirror surface outer edge bulge loop, the body tube
Inside it is provided with the second pressing ring of mirror surface outer edge before pressing against negative crescent moon lens C.
Further, first pressing ring and the second pressing ring peripheral part are provided with external thread part, setting in the body tube
There are two sections to use the internal thread part for being threadedly coupled the first pressing ring and the second pressing ring respectively.
A kind of assembly method of the f50mm high transmittance optics without thermalization camera lens as described above, first by negative crescent moon lens C from master
Lens barrel is front loaded to primary mirror tube rear end and to head on the bulge loop of primary mirror tube rear end, then is fixed with the second pressing ring；It then will just
Crescent moon lens B, spacer ring, negative crescent moon lens A are front loaded from body tube in order, and the positive rear end crescent moon lens B heads in body tube
Stage, then with the first pressing ring be fixed negative crescent moon lens A.
Compared with prior art, the invention has the following advantages: f50mm high transmittance optics of the present invention is without thermalization mirror
Header structure is simple, overall volume is small, easy to carry, easy assembly, high transmittance, in optical design, has optics and imitates without thermalization
Fruit can be adapted to 640 × 512,17 μm of detectors of LWIR Uncooled, carry out document recording and monitor task, be fabricated to
This is cheap, is easily assembled, and is suitble to large-scale production.
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, specific embodiment and phase will be passed through below
Attached drawing is closed, invention is further described in detail.
Detailed description of the invention
Fig. 1 is the schematic diagram of optical system of the embodiment of the present invention；
Fig. 2 is mechanical structure sectional view of the embodiment of the present invention；
Figure label explanation: the first pressing ring of 1-, 2- spacer ring, 3- body tube, the second pressing ring of 4-, the positive crescent moon of negative crescent moon the lens A, 6- of 5-
The negative crescent moon lens C of lens B, 7-.
Specific embodiment
As shown in Figure 1 and 2, a kind of f50mm high transmittance optics includes edge without thermalization camera lens, the optical system of the camera lens
Light incident direction is set gradually from front to back negative crescent moon lens A, positive crescent moon lens B and negative crescent moon lens C, negative crescent moon lens
Airspace between A and positive crescent moon lens B is 1.15mm, and the airspace between positive crescent moon lens B and negative crescent moon lens C is
37.17mm；The radius of curvature of mirror surface is 43.25mm before negative crescent moon lens A, and the radius of curvature of rear mirror surface is 37.2mm, with a thickness of
5mm；The radius of curvature of mirror surface is 36.5mm before positive crescent moon lens B, and the radius of curvature of rear mirror surface is 53.41mm, with a thickness of
6.8mm；The radius of curvature of mirror surface is 40.27mm before negative crescent moon lens C, and the radius of curvature of rear mirror surface is 38.96mm, with a thickness of
7.1mm；For the f50mm high transmittance optics without thermalization lens construction based on simple and convenient, assembly is simple, is easy quantization, and not
It is error-prone, it is suitble to large-scale production；With optics without thermalization, under -40 DEG C ~+80 DEG C of working environment, camera lens itself can self
Adjustment, overcomes temperature to impact the refractive index of optical material, power variation and optimum image plane is caused to shift, thus
Guarantee image quality.
Following optical index has been reached by the optical system that above-mentioned lens set is constituted:
1, service band: 8 μm -12 μm；
2, focal length: f '=50mm；
3, detector: 640 × 512,17 μm of LWIR Uncooled type；
4, field angle: 12.2 ° × 9.8 °；
5, relative aperture D/ f ': 1/1.
In the present embodiment, the material of the negative crescent moon lens A is germanium, and the material of the positive crescent moon lens B is sulphur system glass
Glass, the material of the negative crescent moon lens C are germanium.
In the present embodiment, the mechanical structure of the camera lens includes that inside is equipped with negative crescent moon lens A, positive crescent moon lens B
With the body tube of negative crescent moon lens C, the body tube inner peripheral portion is provided with head on positive crescent moon lens B after mirror surface outer edge rank
Platform, negative crescent moon lens A and positive crescent moon lens B are provided with spacer ring, and mirror surface before pressing against negative crescent moon lens A is provided in the body tube
First pressing ring of outer edge, the primary mirror tube rear end is provided with head on negative crescent moon lens C after mirror surface outer edge bulge loop, the master
The second pressing ring of mirror surface outer edge before pressing against negative crescent moon lens C is provided in lens barrel.
In the present embodiment, first pressing ring and the second pressing ring peripheral part are provided with external thread part, in the body tube
Two sections are provided with respectively with the internal thread part for being threadedly coupled the first pressing ring and the second pressing ring；Guaranteeing the simple premise of structure
Under, it adopts a series of measures, improves camera lens vibration resistance, the ability of impact takes optical design of the optics without thermalization, realizes camera lens
High transmittance guarantees the image quality of camera lens.
Lamps structure of the present invention is simple, small, easy to carry, the easy assembly of camera lens overall volume, high transmittance and have optics without
Thermalization effect.It can be adapted to 640 × 512,17 μm of detectors of LWIR Uncooled, carry out document recording and monitor task；
Cost of manufacture is cheap, and the super simplification of structure, easily assembles, is suitble to large-scale production.
A kind of assembly method of the f50mm high transmittance optics without thermalization camera lens as described above, first by negative crescent moon lens C from master
Lens barrel is front loaded to primary mirror tube rear end and to head on the bulge loop of primary mirror tube rear end, then is fixed with the second pressing ring；It then will just
Crescent moon lens B, spacer ring, negative crescent moon lens A are front loaded from body tube in order, and the positive rear end crescent moon lens B heads in body tube
Stage, then with the first pressing ring be fixed negative crescent moon lens A；Assembly advantageously ensures that negative crescent moon lens A and just in this way
Airspace between crescent moon lens B improves assembly yields, reduces matching requirements, all on body tube to be threadedly engaged place
Point note shellac, the method help to improve the vibration resistance and impact resistance of optical lens part, improve the anti-of whole camera lens
Shock stability.
Any technical solution disclosed in aforementioned present invention unless otherwise stated, if it discloses numberical range,
Disclosed numberical range is preferred numberical range, and any it should be appreciated by those skilled in the art preferred numberical ranges
The only obvious or representative numerical value of technical effect in many enforceable numerical value.It, can not since numerical value is more
Exhaustion, so the present invention just discloses technical solution of the component values to illustrate the present invention, also, the above-mentioned numerical value enumerated is not
The limitation to the invention protection scope should be constituted.
If the present invention is open or relates to the components or structural member of connection fastened to each other, unless otherwise stated,
It is fixedly connected it is to be understood that connection (such as connecting using bolt or screw) can be removedly fixed, it is understood that are as follows:
It is non-removable to be fixedly connected with (such as riveting, welding), certainly, connection fastened to each other or integral structure (such as make
Manufactured with casting technique is integrally formed) replaced (obviously can not be using except integrally formed technique).
In addition, for indicating the art of positional relationship or shape applied in any technical solution disclosed in aforementioned present invention
Its meaning includes approximate with its, similar or close state or shape to language unless otherwise stated.
Either component provided by the invention by multiple individual component parts either assembled, or one
The separate part that forming technology manufactures.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, it should be understood by those ordinary skilled in the art that: still
It can modify to a specific embodiment of the invention or some technical features can be equivalently replaced；Without departing from this hair
The spirit of bright technical solution should all cover within the scope of the technical scheme claimed by the invention.
Claims (5)
1. a kind of f50mm high transmittance optics is without thermalization camera lens, it is characterised in that: the optical system of the camera lens includes along light
Incident direction is set gradually from front to back negative crescent moon lens A, positive crescent moon lens B and negative crescent moon lens C, negative crescent moon lens A and
Airspace between positive crescent moon lens B is 1.15mm, and the airspace between positive crescent moon lens B and negative crescent moon lens C is
37.17mm；The radius of curvature of mirror surface is 43.25mm before negative crescent moon lens A, and the radius of curvature of rear mirror surface is 37.2mm, with a thickness of
5mm；The radius of curvature of mirror surface is 36.5mm before positive crescent moon lens B, and the radius of curvature of rear mirror surface is 53.41mm, with a thickness of
6.8mm；The radius of curvature of mirror surface is 40.27mm before negative crescent moon lens C, and the radius of curvature of rear mirror surface is 38.96mm, with a thickness of
7.1mm。
2. f50mm high transmittance optics according to claim 1 is without thermalization camera lens, it is characterised in that: the negative crescent moon is saturating
The material of mirror A is germanium, and the material of the positive crescent moon lens B is chalcogenide glass, and the material of the negative crescent moon lens C is germanium.
3. f50mm high transmittance optics according to claim 1 is without thermalization camera lens, it is characterised in that: the machine of the camera lens
Tool structure includes the internal body tube for being equipped with negative crescent moon lens A, positive crescent moon lens B and negative crescent moon lens C, in the body tube
Circumference is provided with head on positive crescent moon lens B after mirror surface outer edge stage, negative crescent moon lens A and positive crescent moon lens B be provided with every
It encloses, the first pressing ring of mirror surface outer edge before pressing against negative crescent moon lens A, the primary mirror tube rear end setting is provided in the body tube
There is the bulge loop of mirror surface outer edge after heading on negative crescent moon lens C, is provided in the body tube before pressing against negative crescent moon lens C outside mirror surface
Second pressing ring of edge.
4. f50mm high transmittance optics according to claim 3 is without thermalization camera lens, it is characterised in that: first pressing ring
Second pressing ring peripheral part is provided with external thread part, two sections are provided in the body tube respectively with being threadedly coupled the first pressing ring
With the internal thread part of the second pressing ring.
5. a kind of assembly method of the f50mm high transmittance optics without thermalization camera lens as claimed in claim 3, it is characterised in that: first
Negative crescent moon lens C to primary mirror tube rear end and is headed on into the bulge loop of primary mirror tube rear end from body tube is front loaded, then with the second pressing ring
It is fixed；Then positive crescent moon lens B, spacer ring, negative crescent moon lens A is front loaded from body tube in order, positive crescent moon lens B
Rear end heads on the stage in body tube, is then fixed negative crescent moon lens A with the first pressing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811645625.8A CN109491058B (en) | 2018-12-29 | 2018-12-29 | F50mm high-transmittance optical athermalized lens and assembly method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811645625.8A CN109491058B (en) | 2018-12-29 | 2018-12-29 | F50mm high-transmittance optical athermalized lens and assembly method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109491058A true CN109491058A (en) | 2019-03-19 |
| CN109491058B CN109491058B (en) | 2023-12-08 |
Family
ID=65712090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811645625.8A Active CN109491058B (en) | 2018-12-29 | 2018-12-29 | F50mm high-transmittance optical athermalized lens and assembly method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN109491058B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261982A (en) * | 2019-07-03 | 2019-09-20 | 福建福光天瞳光学有限公司 | Infrared lens and its assembly method with detachable-type sealed structure |
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| GB1345505A (en) * | 1972-07-19 | 1974-01-30 | Dallmeyer Ltd J H | Optical lens for infrared radiation |
| GB1451276A (en) * | 1974-05-06 | 1976-09-29 | Rank Organisation Ltd | Lens structure |
| JP2006039174A (en) * | 2004-07-27 | 2006-02-09 | Fujinon Corp | Zoom lens |
| CN105137565A (en) * | 2015-10-12 | 2015-12-09 | 福建福光股份有限公司 | Uncooled long-wave infrared optical mechanical athermalizing lens and compensation adjustment method thereof |
| CN105388578A (en) * | 2015-12-25 | 2016-03-09 | 福建福光股份有限公司 | Long-wave infrared optical-mechanical athermalized lens and compensation adjusting method thereof |
| CN106526806A (en) * | 2016-12-16 | 2017-03-22 | 福建福光天瞳光学有限公司 | Large depth-of-field long wave infrared wide-angle temperature measuring lens and working method thereof |
| CN107357028A (en) * | 2017-07-04 | 2017-11-17 | 西安泰豪红外科技有限公司 | A kind of optics of wide temperature range is without thermalization camera lens |
| CN107390349A (en) * | 2017-08-30 | 2017-11-24 | 福建福光股份有限公司 | A kind of long wave refrigeration mode is without thermalization camera lens |
| JPWO2017090495A1 (en) * | 2015-11-27 | 2018-09-13 | コニカミノルタ株式会社 | Infrared optical system, imaging optical device, and digital equipment |
| CN209343032U (en) * | 2018-12-29 | 2019-09-03 | 福建福光天瞳光学有限公司 | A kind of f50mm high transmittance optics is without thermalization camera lens |
-
2018
- 2018-12-29 CN CN201811645625.8A patent/CN109491058B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1345505A (en) * | 1972-07-19 | 1974-01-30 | Dallmeyer Ltd J H | Optical lens for infrared radiation |
| GB1451276A (en) * | 1974-05-06 | 1976-09-29 | Rank Organisation Ltd | Lens structure |
| JP2006039174A (en) * | 2004-07-27 | 2006-02-09 | Fujinon Corp | Zoom lens |
| CN105137565A (en) * | 2015-10-12 | 2015-12-09 | 福建福光股份有限公司 | Uncooled long-wave infrared optical mechanical athermalizing lens and compensation adjustment method thereof |
| JPWO2017090495A1 (en) * | 2015-11-27 | 2018-09-13 | コニカミノルタ株式会社 | Infrared optical system, imaging optical device, and digital equipment |
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| CN106526806A (en) * | 2016-12-16 | 2017-03-22 | 福建福光天瞳光学有限公司 | Large depth-of-field long wave infrared wide-angle temperature measuring lens and working method thereof |
| CN107357028A (en) * | 2017-07-04 | 2017-11-17 | 西安泰豪红外科技有限公司 | A kind of optics of wide temperature range is without thermalization camera lens |
| CN107390349A (en) * | 2017-08-30 | 2017-11-24 | 福建福光股份有限公司 | A kind of long wave refrigeration mode is without thermalization camera lens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261982A (en) * | 2019-07-03 | 2019-09-20 | 福建福光天瞳光学有限公司 | Infrared lens and its assembly method with detachable-type sealed structure |
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| Publication number | Publication date |
|---|---|
| CN109491058B (en) | 2023-12-08 |
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