CN205594223U - Two light imaging lens of long burnt visible light near -infrared of formula of turning back - Google Patents
Two light imaging lens of long burnt visible light near -infrared of formula of turning back Download PDFInfo
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- CN205594223U CN205594223U CN201620407366.5U CN201620407366U CN205594223U CN 205594223 U CN205594223 U CN 205594223U CN 201620407366 U CN201620407366 U CN 201620407366U CN 205594223 U CN205594223 U CN 205594223U
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Abstract
The utility model relates to a two light imaging lens of long burnt visible light near -infrared of formula of turning back, including setting gradually at the epaxial corrector of same light, secondary reflector, first lens, second lens, third lens, fourth lens, main reflector, beam splitting Prism, visible light detector and nearly infrared detector. The utility model relates to a two light imaging system of long burnt visible light near -infrared realize the detection of different wave bands and keep watch on and trail long -distance object.
Description
Technical field
This utility model relates to field of optical lens, particularly relates to a kind of Zigzag type focal length visible ray Near-infrared Double
Photoimaging camera lens.
Background technology
Owing to the enlargement ratio of optical system changes with system focal, the careful observation for distant object needs
Want tele lens, and target has different reflectance and other spectral characteristics to different spectrum, so
Long-focus bispectrum section and multi-spectral imaging is significant and practical value, focal length wide spectrum camera lens is in design
During have several schemes such as reflective, Zigzag type, refraction type, for focal length about 1m, the angle of visual field 0.6
System about °, three of the above mode all can realize.But owing to refraction type system is at long-focus, wide spectrum
Under conditions of aberration be difficult to correct, can cause system design complexity, so refraction type is not preferred option.Pure
Reflective system debugs difficulty, simultaneously because system can exist light-splitting device, it will be seen that light and near infrared spectrum
Separately, pure reflective system is difficult to, and system designs final Selection utilization Zigzag type system implementation requirements.
Utility model content
In order to solve the technical problem in the presence of background technology, a kind of focal length visible ray of this utility model design
Near-infrared Double photoimaging systems, realizes detection and the surveillance and tracking of different-waveband to distant object.
Technical solution of the present utility model is: a kind of Zigzag type focal length visible ray Near-infrared Double photoimaging mirror
Head, it is characterised in that: the corrective lens (eye protection) that includes being successively set on same optical axis, secondary mirror, the first lens,
Second lens, the 3rd lens, the 4th lens, principal reflection mirror, Amici prism, visible-light detector and near
Infrared Detectors.
Visible light wave range and 1064nm wave band are separated by above-mentioned Amici prism, are imaged onto visible-light detector respectively
And near infrared detector.
Above-mentioned focal range is 1100mm；Relative aperture: 1/10.
Detector resolution: 1280 × 1280；Detector pixel dimension: 5.5 μm.
Camera lens of the present utility model is respectively provided with good image quality at visible ray and near infrared band, passes through rib
Mirror light splitting, it is possible to target in visible light wave range and near infrared band imaging respectively, obtain target and at a distance may be used
See light image and near-infrared image, conveniently target is carried out long-range detection measuring and calculating relative with target bearing.
Accompanying drawing explanation
Fig. 1 is optical system light path figure of the present utility model；
Fig. 2 is optical system composition diagram of the present utility model；
Fig. 3 is imaging MTF curve figure of the present utility model；
Detailed description of the invention
The light path design result of system as it is shown in figure 1, be made up of 7 optical elements the most altogether,
System design after after principal reflection mirror add Amici prism, it will be seen that optical band (480nm～
700nm) separating with 1064nm wave band, be imaged onto respectively on different detectors, 1064nm wave band is used for connecing
Receiving the near infrared light that target returns, due to two-way just Common-path method, the light that near-infrared returns may be used for
Judge the relative position of target and detector, it is simple to the measuring and calculating of position relatively.
Seeing Fig. 2, system includes corrective lens (eye protection) 1, has the effect of total system window concurrently simultaneously；Principal reflection mirror 2,
Secondary mirror the 3, first lens the 4, second lens the 5, the 3rd lens the 6, the 4th lens 7, Amici prism 8,
Amici prism 8 is beam splitter, for visible ray and near infrared light being separated, it is seen that photo-detector 9 is with near
Infrared Detectors 10.Index parameter: wavelength band: 480nm～700nm, 1064nm；Focal range: 1100mm
Two grades variable.Relative aperture: 1/10；Detector resolution: 1280 × 1280；Detector pixel dimension:
5.5μm。
Design principle:
1) optical material that physicochemical property is good is selected；Mainly quartz glass and K9 glass；
2) on nyquist frequency, higher mtf value is kept, to ensure final image quality；
3) eyeglass has good process industrial art performance, it is ensured that the requirement vibrated and impact；
4) there is loose tolerance, reduce processing and design difficulty.
Fig. 3 gives system MTF curve at nyquist frequency, there it can be seen that the design of MTF
Value close to diffraction limit, it is ensured that system be designed like quality close to theoretical limit level.
Claims (3)
1. a Zigzag type focal length visible ray Near-infrared Double photoimaging camera lens, it is characterised in that: include setting successively
Put the corrective lens (eye protection) on same optical axis, secondary mirror, the first lens, the second lens, the 3rd lens, the 4th
Lens, principal reflection mirror, Amici prism, visible-light detector and near infrared detector；Described Amici prism
Visible light wave range and 1064nm wave band are separated, is imaged onto visible-light detector and near infrared detector respectively
On.
Zigzag type focal length visible ray Near-infrared Double photoimaging camera lens the most according to claim 1, its feature
It is: lens focus scope is 1100mm；Relative aperture: 1/10.
Zigzag type focal length visible ray Near-infrared Double photoimaging camera lens the most according to claim 2, its feature
It is: detector resolution: 1280 × 1280；Detector pixel dimension: 5.5 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620407366.5U CN205594223U (en) | 2016-05-06 | 2016-05-06 | Two light imaging lens of long burnt visible light near -infrared of formula of turning back |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620407366.5U CN205594223U (en) | 2016-05-06 | 2016-05-06 | Two light imaging lens of long burnt visible light near -infrared of formula of turning back |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205594223U true CN205594223U (en) | 2016-09-21 |
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ID=56933980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620407366.5U Active CN205594223U (en) | 2016-05-06 | 2016-05-06 | Two light imaging lens of long burnt visible light near -infrared of formula of turning back |
Country Status (1)
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| CN (1) | CN205594223U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526821A (en) * | 2016-11-30 | 2017-03-22 | 长光卫星技术有限公司 | Dual-mode space remote-sensing camera based on field-of-view light-splitting optical system |
| CN106680975A (en) * | 2017-02-28 | 2017-05-17 | 福鼎市雄光学仪器有限公司 | Marca microelectronic telephoto lenses |
| CN108333719A (en) * | 2018-03-09 | 2018-07-27 | 中国科学院西安光学精密机械研究所 | A kind of high-performance visible light long focal length lens |
| CN111367066A (en) * | 2018-12-25 | 2020-07-03 | 中国科学院长春光学精密机械与物理研究所 | Coaxial four-reflection optical system |
-
2016
- 2016-05-06 CN CN201620407366.5U patent/CN205594223U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526821A (en) * | 2016-11-30 | 2017-03-22 | 长光卫星技术有限公司 | Dual-mode space remote-sensing camera based on field-of-view light-splitting optical system |
| CN106680975A (en) * | 2017-02-28 | 2017-05-17 | 福鼎市雄光学仪器有限公司 | Marca microelectronic telephoto lenses |
| CN108333719A (en) * | 2018-03-09 | 2018-07-27 | 中国科学院西安光学精密机械研究所 | A kind of high-performance visible light long focal length lens |
| CN108333719B (en) * | 2018-03-09 | 2022-12-27 | 中国科学院西安光学精密机械研究所 | Visible 530mm focal length lens |
| CN111367066A (en) * | 2018-12-25 | 2020-07-03 | 中国科学院长春光学精密机械与物理研究所 | Coaxial four-reflection optical system |
| CN111367066B (en) * | 2018-12-25 | 2021-12-17 | 中国科学院长春光学精密机械与物理研究所 | Coaxial four-reflection optical system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |