CN110196101A - A kind of wide spectrum monochromatic light road optical spectrum imaging device - Google Patents
A kind of wide spectrum monochromatic light road optical spectrum imaging device Download PDFInfo
- Publication number
- CN110196101A CN110196101A CN201910528438.XA CN201910528438A CN110196101A CN 110196101 A CN110196101 A CN 110196101A CN 201910528438 A CN201910528438 A CN 201910528438A CN 110196101 A CN110196101 A CN 110196101A
- Authority
- CN
- China
- Prior art keywords
- reflecting mirror
- wide spectrum
- free form
- form surface
- entrance slit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001228 spectrum Methods 0.000 title claims abstract description 57
- 230000003287 optical effect Effects 0.000 title claims abstract description 22
- 238000003384 imaging method Methods 0.000 title claims abstract description 18
- 230000004044 response Effects 0.000 claims abstract description 16
- 238000012545 processing Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 10
- 230000003595 spectral effect Effects 0.000 claims description 10
- 239000006185 dispersion Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 10
- 230000000007 visual effect Effects 0.000 description 8
- 230000004075 alteration Effects 0.000 description 6
- 241000700608 Sagitta Species 0.000 description 3
- 238000000701 chemical imaging Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 201000009310 astigmatism Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
- G01J3/0208—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using focussing or collimating elements, e.g. lenses or mirrors; performing aberration correction
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
- G01J3/2823—Imaging spectrometer
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Lenses (AREA)
Abstract
The invention discloses a kind of wide spectrum monochromatic light road optical spectrum imaging device, described device includes front-end system, entrance slit, beam splitting system and wide spectrum response detector, and front-end system includes the first reflecting mirror, the second reflecting mirror and third reflecting mirror;Incident beam successively enters the entrance slit after the reflection of first reflecting mirror, the second reflecting mirror and third reflecting mirror;The entrance slit is placed at an image planes, and the light beam for being incident on the entrance slit enters the wide spectrum response detector after beam splitting system processing;The beam splitting system includes first surface prism, the 4th reflecting mirror, the 5th reflecting mirror, the second curved surface prism, the 6th reflecting mirror.Above-mentioned apparatus is combined using single light path design with wide spectrum response detector, is realized the use demand of wide spectrum, miniaturization by introducing free form surface, is significantly reduced system bulk weight and cost.
Description
Technical field
The present invention relates to spectral imaging technology field more particularly to a kind of wide spectrum monochromatic light road optical spectrum imaging devices.
Background technique
Traditional dioptric system is usually the coaxial system being made of spherical surface or non-spherical lens, is revolved about optical axis
Turn symmetrical.But with the expansion of photoelectric instrument use scope, the raising of performance requirement, conventional optical systems since volume is big,
It can no longer meet the needs of optoelectronic device miniaturization.The appearance of reflective optics solves the problems, such as this.But coaxial reflection
There are central obscurations in system, reduce the utilization rate of energy, then develop non co axial reflecting system, such as three anti-systems.
The off-axis aberration of Non-coaxial systems is very big, and is not easy to correct, and is restricted the visual field of system.It is introduced certainly in Non-coaxial systems
By curved surface, off-axis aberration can be corrected well, to expand visual field.
The design of freeform optics system in the prior art, no initial configuration or patent can provide selection.Using
Free form surface in optical system selectes a kind of face type generally according to the demand difference of system design, and then selection is suitable
Position is placed in system and optimizes.This method needs optical designers to have experience abundant, and excellent
Need the period longer during changing, circulation can not be jumped out by being easily trapped into local minimum, therefore be difficult to find optimal solution.And it passes
It unites in spectral imaging technology, realizes and be imaged from visible near-infrared to the wide spectrum of short-wave infrared, by planar array detector and imaging
The restriction of quality, single camera are difficult to realize such wide spectrum imaging, need to can be realized using two or more, it is difficult to meet small-sized
The demand of change.And miniaturization spectrometer haves the defects that in performance, the resolving power decline of system, aberration correcting capability is limited, spectrum
The problems such as face bending is serious.If realizing the big view field imaging of wide spectrum, camera splicing is generallyd use, is divided after slit by cutting edge and is regarded
Field is divided in the brachium placement color separation film of spectrometer, to realize the detection of divided beams, existing imaging spectrometer is deposited
Structure is complicated, integrated low defect.
Summary of the invention
The object of the present invention is to provide a kind of wide spectrum monochromatic light road optical spectrum imaging device, which uses single light path design,
It is combined with wide spectrum response detector, realizes the use demand of wide spectrum, miniaturization by introducing free form surface, significantly
Reduce system bulk weight and cost.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of wide spectrum monochromatic light road optical spectrum imaging device, described device include front-end system, entrance slit, beam splitting system and
Wide spectrum response detector, in which:
The front-end system includes the first reflecting mirror, the second reflecting mirror and third reflecting mirror;Incident beam successively passes through described
Enter the entrance slit after first reflecting mirror, the second reflecting mirror and the reflection of third reflecting mirror;
The entrance slit is placed at an image planes, be incident on the light beam of the entrance slit through the beam splitting system at
Enter the wide spectrum response detector after reason;
The response wave band range covering visible light and short infrared wave band of the wide spectrum response detector, and visible light and
Short-wave infrared shares a set of beam splitting system;
The beam splitting system includes first surface prism, the 4th reflecting mirror, the 5th reflecting mirror, the second curved surface prism, the 6th
Reflecting mirror, in which:
5th reflecting mirror is set as free form surface, the aperture diaphragm of described device is located at the 5th reflecting mirror 13
At position;
By set free form surface, the off-axis of the 4th reflecting mirror, the 5th reflecting mirror and the 6th reflecting mirror is controlled
The transmission twice of eccentricity and first surface prism, the second curved surface prism, the dispersion for reaching visible light and short-wave infrared are wanted
It asks, realizes wide spectrum dispersion.
As seen from the above technical solution provided by the invention, above-mentioned apparatus is rung using single light path design with wide spectrum
It answers detector to combine, realizes the use demand of wide spectrum, miniaturization by introducing free form surface, significantly reduce system body
Product weight and cost.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is wide spectrum monochromatic light provided in an embodiment of the present invention road optical spectrum imaging device schematic diagram;
Fig. 2 is that free form surface described in the embodiment of the present invention solves schematic diagram;
Fig. 3 is the Spectral line bend schematic diagram of example visible channel of the present invention;
Fig. 4 is the band curvature schematic diagram of example visible channel of the present invention;
Fig. 5 is the Spectral line bend schematic diagram in example short-wave infrared of the present invention channel;
Fig. 6 is the band curvature schematic diagram in example short-wave infrared of the present invention channel.
Specific embodiment
With reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this
The embodiment of invention, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, belongs to protection scope of the present invention.
The embodiment of the present invention is described in further detail below in conjunction with attached drawing, is implemented as shown in Figure 1 for the present invention
The wide spectrum monochromatic light road optical spectrum imaging device schematic diagram that example provides, described device include front-end system 5, entrance slit 6, light splitting system
System 7 and wide spectrum response detector 16, in which:
The front-end system 5 includes the first reflecting mirror 8, the second reflecting mirror 9 and third reflecting mirror 10, and incident beam is successively
Enter the entrance slit 6 after the reflection of first reflecting mirror 8, the second reflecting mirror 9 and third reflecting mirror 10;
The entrance slit 6 is placed at an image planes, is incident on the light beam of the entrance slit 6 through the beam splitting system
Enter the wide spectrum response detector 16 after 7 processing;
The response wave band range covering visible light and short infrared wave band of the wide spectrum response detector 16, and visible light
A set of beam splitting system 7 is shared with short-wave infrared;
The beam splitting system 7 includes first surface prism 11, the 4th reflecting mirror 12, the 5th reflecting mirror 13, the second curved surface
Prism 14, the 6th reflecting mirror 15, in which:
5th reflecting mirror 13 is set as free form surface, the aperture diaphragm of described device is located at the 5th reflecting mirror 13
Position at;The aperture diaphragm influences the incidence angle of chief ray, directly affects the aberration of system;
By set free form surface, the 4th reflecting mirror 12, the 5th reflecting mirror 13 and the 6th reflecting mirror 15 are controlled
Off-axis eccentricity and first surface prism 11, the second curved surface prism 14 transmission twice, reach visible light and short-wave infrared
Dispersion requirement, realize wide spectrum dispersion.
Above scheme utilizes the non-rotationally-symmetric optical characteristics of free form surface, corrects the meridian and sagitta of arc aberration of spectroscopic system
Asymmetry, the senior aberration of compensation system peripheral field improves traditional design bring Spectral line bend and band curvature, has
Effect widens system spectrum range.
Further, the radius of curvature of the free form surface different location is obtained using iterative method, and then acquisition is described certainly
By the initial configuration of curved surface, which can provide a good optimization starting point for the design of beam splitting system, can effectively contract
The optimization process of short spectrum imaging system.
The solution schematic diagram of free form surface described in the embodiment of the present invention is illustrated in figure 2 to obtain with reference to Fig. 2 using iterative method
The process of the radius of curvature of the free form surface different location specifically:
Right-handed coordinate system is initially set up, Z axis is consistent with optical axis direction, origin of the vertex of spherical surface as coordinate system;A point is
A bit given, in order to calculate free form surface, seeks numerical approximation solution using the method for Approach by inchmeal;
First find out the intersecting point coordinate B of light 1 and benchmark spherical surface 201, by B01As first approximation solution;
By B01The parallel lines for making optical axis obtain and the intersection points B of free form surface 31;
By intersection points B1With the tangent plane 4 of free form surface 3 and the intersection points B of the light 1 '1As new approximate solution;
Above step is repeated until the precision met the requirements.
For example, total system is symmetrical about the face YOZ, therefore the odd times power of X is 0 in multinomial, and polynomial expression is such as
Under:
Wherein, k is quadratic coefficients, and r is the radial coordinate as unit of lens, and c is curvature.In order to solve the friendship of meridian plane
Point B1, the expression formula of free form surface is amended as follows:
By equation (1) respectively to x, y, z derivation
The intersection points B of meridian plane and emergent ray '1It is new approximate solution, B '1And B1Distance be l, B '1By using following formula
It calculates:
x1=x01+ α l, y1=y01+ β l, z1=z01+γl (4)
α, beta, gamma are direction cosines, B '1It is the point on meridian plane, can be acquired by following formula:
Equation (5) are substituted into (4) again, B ' can be acquired1.By Matlab successive ignition, meridian and sagitta of arc distance be can get:
Function can be acquired to the first derivative and second dervative of x by above formula, so acquire arbitrary point meridian and the sagitta of arc away from
From:
According to paraxial theory, rt,rsAfter solution, Δ xtsIt can acquire:
The spectral region of above-mentioned apparatus is 400-2500nm, and slit length 20mm, F number is 3, system overall length 310mm, spectrum
Resolution ratio 4.2nm.
For specific example:
It in visual field is 0mm, 7mm, 15mm by trace wavelength 400nm, 550nm, 650nm, 800nm, 1000nm, at 20mm
Image point position to obtain the spectrum distortion curve of viewability channel be as shown in Figures 3 and 4 example visible light of the present invention
The Spectral line bend and band curvature schematic diagram in channel.The spectral line that can be seen that 400nm from the spectrum distortion figure of visible channel is curved
Bent larger, with the increase of visual field, value also constantly increases, and maximum value is 3 μm, about 0.2 Pixel size.Its all band
Spectral line bend is respectively less than 0.1 pixel.It can be seen that from band curvature figure, less than 0.2 pixel of band curvature of maximum field of view can
Meet requirement.
By trace wavelength 1000nm, 1500nm, 1800nm, 2200nm, 2500nm visual field be 0mm, 7mm, 15mm,
Image point position at 20mm is lifted by the present invention as illustrated in Figures 5 and 6 to obtain the spectrum distortion curve in short-wave infrared channel
The Spectral line bend and band curvature schematic diagram in example short-wave infrared channel.It can be seen that from the spectrum distortion figure in short-wave infrared channel,
About 0.06 pixel at long wave 2500nm occurs for maximum Spectral line bend.The band curvature of all visual fields is all smaller, respectively less than
0.1 pixel.
It is worth noting that, the content being not described in detail in the embodiment of the present invention belongs to professional and technical personnel in the field's public affairs
The prior art known.Such as the modification of camber reflection mirror surface type, optical element radius, thickness, airspace, used optics
The changes such as material, visual field, modification of relative aperture etc., these changes and variation do not depart from essential scope of the invention.
In conclusion single camera reaches two phases of traditional sense using imaging device provided by the embodiment of the present invention
The performance that machine is realized, system bulk and weight reduce 50% or more;Wide spectrum astigmatism is carried out by the design of free form surface simultaneously
The big visual field of single camera, wide spectrum performance are realized in correction.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Within the technical scope of the present disclosure, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (4)
1. a kind of wide spectrum monochromatic light road optical spectrum imaging device, which is characterized in that described device include front-end system, entrance slit,
Beam splitting system and wide spectrum response detector, in which:
The front-end system includes the first reflecting mirror, the second reflecting mirror and third reflecting mirror;Incident beam is successively through described first
Enter the entrance slit after reflecting mirror, the second reflecting mirror and the reflection of third reflecting mirror;
The entrance slit is placed at an image planes, is incident on the light beam of the entrance slit after beam splitting system processing
Into the wide spectrum response detector;
The response wave band range covering visible light and short infrared wave band of the wide spectrum response detector, and visible light and shortwave
It is infrared to share a set of beam splitting system;
The beam splitting system includes first surface prism, the 4th reflecting mirror, the 5th reflecting mirror, the second curved surface prism, the 6th reflection
Mirror, in which:
5th reflecting mirror is set as free form surface, the aperture diaphragm of described device is located at the position of the 5th reflecting mirror 13
Place;
By set free form surface, the off-axis bias of the 4th reflecting mirror, the 5th reflecting mirror and the 6th reflecting mirror is controlled
The transmission twice of amount and first surface prism, the second curved surface prism, reaches the dispersion requirement of visible light and short-wave infrared, real
Wide spectrum dispersion is showed.
2. wide spectrum monochromatic light road optical spectrum imaging device according to claim 1, which is characterized in that it is directed to the free form surface,
The radius of curvature of the free form surface different location is obtained using iterative method, and then obtains the initial configuration of the free form surface.
3. wide spectrum monochromatic light road optical spectrum imaging device according to claim 2, which is characterized in that described to be obtained using iterative method
The process of the radius of curvature of the free form surface different location specifically:
Right-handed coordinate system is initially set up, Z axis is consistent with optical axis direction, origin of the vertex of spherical surface as coordinate system;
First find out the intersecting point coordinate B of light and benchmark spherical surface01, by B01As first approximation solution;
By B01The parallel lines for making optical axis obtain and the intersection points B of free form surface1;
By intersection points B1With the tangent plane of free form surface and the intersection points B of the light '1As new approximate solution;
Above step is repeated until the precision met the requirements.
4. wide spectrum monochromatic light road optical spectrum imaging device according to claim 1, which is characterized in that
The spectral region of described device is 400-2500nm, and slit length 20mm, F number is 3, system overall length 310mm, spectrally resolved
Rate 4.2nm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910528438.XA CN110196101A (en) | 2019-06-18 | 2019-06-18 | A kind of wide spectrum monochromatic light road optical spectrum imaging device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910528438.XA CN110196101A (en) | 2019-06-18 | 2019-06-18 | A kind of wide spectrum monochromatic light road optical spectrum imaging device |
Publications (1)
Publication Number | Publication Date |
---|---|
CN110196101A true CN110196101A (en) | 2019-09-03 |
Family
ID=67754733
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910528438.XA Pending CN110196101A (en) | 2019-06-18 | 2019-06-18 | A kind of wide spectrum monochromatic light road optical spectrum imaging device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN110196101A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111077666A (en) * | 2019-12-09 | 2020-04-28 | 河北汉光重工有限责任公司 | Compact combined type gyration detecting head |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103954358A (en) * | 2014-05-12 | 2014-07-30 | 中国科学院光电研究院 | Imaging spectrometer |
CN104570340A (en) * | 2013-10-24 | 2015-04-29 | 清华大学 | Design method of free-form surface imaging system |
CN105988214A (en) * | 2015-02-05 | 2016-10-05 | 清华大学 | Designing method of free-form surface off-axis imaging system with real exit pupil |
CN105988213A (en) * | 2015-02-05 | 2016-10-05 | 清华大学 | Design method of free-form surface off-axis optical system |
CN105988212A (en) * | 2015-02-05 | 2016-10-05 | 清华大学 | Design method of three dimensional free-form curved surface |
CN108398186A (en) * | 2018-02-07 | 2018-08-14 | 中国科学院光电研究院 | Free form surface Offner convex grating spectrum imaging systems |
CN109060129A (en) * | 2018-08-20 | 2018-12-21 | 中国科学院上海技术物理研究所 | A kind of imaging spectrometer optical system based on free form surface and curved surface prism |
CN109781257A (en) * | 2018-12-27 | 2019-05-21 | 中国科学院长春光学精密机械与物理研究所 | A kind of free curved surface prism spectrometer optical system |
-
2019
- 2019-06-18 CN CN201910528438.XA patent/CN110196101A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104570340A (en) * | 2013-10-24 | 2015-04-29 | 清华大学 | Design method of free-form surface imaging system |
CN103954358A (en) * | 2014-05-12 | 2014-07-30 | 中国科学院光电研究院 | Imaging spectrometer |
CN105988214A (en) * | 2015-02-05 | 2016-10-05 | 清华大学 | Designing method of free-form surface off-axis imaging system with real exit pupil |
CN105988213A (en) * | 2015-02-05 | 2016-10-05 | 清华大学 | Design method of free-form surface off-axis optical system |
CN105988212A (en) * | 2015-02-05 | 2016-10-05 | 清华大学 | Design method of three dimensional free-form curved surface |
CN108398186A (en) * | 2018-02-07 | 2018-08-14 | 中国科学院光电研究院 | Free form surface Offner convex grating spectrum imaging systems |
CN109060129A (en) * | 2018-08-20 | 2018-12-21 | 中国科学院上海技术物理研究所 | A kind of imaging spectrometer optical system based on free form surface and curved surface prism |
CN109781257A (en) * | 2018-12-27 | 2019-05-21 | 中国科学院长春光学精密机械与物理研究所 | A kind of free curved surface prism spectrometer optical system |
Non-Patent Citations (2)
Title |
---|
刘正权等: "基于LED的自由曲面反射器涉及软件研究", 《照明工程学报》 * |
王先逵等: "《机床数字控制技术手册 技术基础卷》", 31 October 2013 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111077666A (en) * | 2019-12-09 | 2020-04-28 | 河北汉光重工有限责任公司 | Compact combined type gyration detecting head |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9651763B2 (en) | Co-aperture broadband infrared optical system | |
CN105259647B (en) | Big visual field is with three trans Space Optical Systems of off-axis one | |
CN102866487B (en) | Coaxial four surpass in reverse low distorted optical system | |
CN108444600B (en) | High-flux wide-spectrum miniaturized imaging spectrometer | |
CN105572895B (en) | The humorous diffraction primary mirror imaging system of heavy caliber and its application | |
CN102519593B (en) | Optical system for super-wide-angle short wave infrared push-broom hyperspectral imager | |
US11112589B2 (en) | Optical imaging lens assembly | |
IL168515A (en) | Compact wide-field-of-view imaging optical system | |
US11506869B2 (en) | Miniature imaging lens for close-range imaging | |
US8965193B1 (en) | Mirrored lens for wide field of view and wide spectrum | |
US8488237B2 (en) | Wide spectral coverage Ross corrected Cassegrain-like telescope | |
CN111751915B (en) | Compact infrared viewfinder optical system based on free-form surface prism | |
CN107677264B (en) | Reflective star sensor | |
CN205594223U (en) | Two light imaging lens of long burnt visible light near -infrared of formula of turning back | |
CN108398186A (en) | Free form surface Offner convex grating spectrum imaging systems | |
CN204044432U (en) | A kind of refraction-reflection type THz wave imaging device | |
CN104406691B (en) | A kind of imaging spectrometer beam splitting system based on single free form surface | |
CN110196101A (en) | A kind of wide spectrum monochromatic light road optical spectrum imaging device | |
CN110146166B (en) | Spectrum light splitting system of free-form surface prism | |
CN104035197A (en) | Refraction and reflection type THz wave imaging system | |
CN109060128A (en) | A kind of imaging spectrum system of visible light and short-wave infrared Shared aperture | |
CN115993707A (en) | Wide-angle endoscope lens | |
US20220137334A1 (en) | Camera lens assembly | |
CN110646091B (en) | Large-view-field Dyson spectral imaging system adopting free-form surface | |
CN210376857U (en) | High-precision miniaturized long-focus star sensor optical system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190903 |