CN107748444B - Polarized light wide-field transmission type convergent illumination device and method - Google Patents
Polarized light wide-field transmission type convergent illumination device and method Download PDFInfo
- Publication number
- CN107748444B CN107748444B CN201711250226.7A CN201711250226A CN107748444B CN 107748444 B CN107748444 B CN 107748444B CN 201711250226 A CN201711250226 A CN 201711250226A CN 107748444 B CN107748444 B CN 107748444B
- Authority
- CN
- China
- Prior art keywords
- polarized light
- light
- convex lens
- lens
- component
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/281—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for attenuating light intensity, e.g. comprising rotatable polarising elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Polarising Elements (AREA)
Abstract
The technical scheme of the invention discloses a polarized light wide-field transmission type convergent lighting device and a method, wherein incident laser is separated into a first beam of polarized light and a second beam of polarized light which are vertical in polarization direction through a polarization beam splitting component; performing polarization rotation on the first beam of polarized light through a polarization rotation component, so that the polarization direction of the first beam of polarized light is the same as or opposite to that of the second beam of polarized light; synthesizing the second beam of polarized light and the first beam of polarized light after polarization rotation into a synthesized light beam which is coaxial in the same direction through a polarization light-combining component; and integrating the synthesized light beams into illumination light meeting the field of view requirement through a transmission type beam expanding and converging component. Therefore, the technical scheme of the invention can utilize two parts of polarized light with vertical polarization directions in the incident laser to perform polarized light illumination, thereby avoiding the waste of laser energy.
Description
Technical Field
The invention relates to the technical field of laser illumination, in particular to a polarized light wide-field transmission type convergent illumination device and method.
Background
In the underwater object detection process, the active illumination imaging of the blue-green polarized laser is adopted, so that the backscattering of the illumination laser generated in water can be effectively inhibited, the imaging contrast of the underwater object is improved, the imaging quality is improved, and high-quality data is provided for image analysis; in addition, the surface characteristics such as the refractive index and the roughness of the underwater object can be analyzed through the polarization degree, and measurement data are provided for target identification.
Most of laser is partial polarized light, two parts of polarized light with mutually vertical vibration directions are generated in the laser after passing through a polarizer, and when polarized light is used for illumination in the prior art, the polarized light in one polarization direction is generally only used, so that the waste of laser energy is caused.
Disclosure of Invention
In order to solve the problems, the technical scheme of the invention provides a polarized light wide-field transmission type convergent lighting device and a polarized light wide-field transmission type convergent lighting method, which can utilize two parts of polarized light with vertical polarization directions in incident laser to perform polarized light illumination, and avoid the waste of laser energy.
In order to achieve the above purpose, the invention provides the following technical scheme:
a polarized light wide field of view transmissive convergent illumination device, comprising:
the device comprises a polarized light beam splitting component, a polarized light rotation component, a polarized light photosynthetic component and a transmission type beam expanding and converging component;
the polarized light beam splitting component is used for splitting incident laser into a first polarized light beam and a second polarized light beam which are vertical to the polarization direction, the first polarized light beam is incident to the polarized light optical rotation component, and the second polarized light beam is incident to the polarized light optical combination component;
the polarized light rotation component is used for carrying out polarization rotation on the first beam of polarized light, so that the polarization direction of the first beam of polarized light is the same as or opposite to that of the second beam of polarized light; the polarized and rotated first beam of polarized light enters the polarized light combining component;
the polarized light beam combining component is used for combining the incident first beam of polarized light and the incident second beam of polarized light into a combined beam of light which is coaxial in the same direction, and the combined light enters the transmission type beam expanding and converging component;
the transmission type beam expanding and converging component is used for integrating the synthesized light into illumination light meeting the requirement of a field of view.
Preferably, in the polarized light wide-field transmission type converging illumination device, the polarized light beam splitting member is a wollaston prism.
Preferably, in the above polarized light wide-field transmission type convergent illumination device, the polarized light rotation member includes: a mirror and an optical rotation member;
the first beam of polarized light is incident to the reflector, reflected to the optical rotation component through the reflector, and then is incident to the polarized light combining component after being polarized and rotated by the optical rotation component.
Preferably, in the polarized light wide-field transmission type convergent lighting device, the polarized light combining component comprises a first transflective lens;
the second beam of polarized light vertically passes through the first transflective lens;
and the first beam of polarized light after polarization rotation enters the first transflective mirror in the Brewster angle direction and vertically exits the first transflective mirror.
Preferably, in the above polarized light wide-field transmission type converging illumination device, the transmission type beam expanding and converging component includes:
the second lens, the first convex lens, the concave lens, the second convex lens and the third convex lens are coaxial; the synthetic light sequentially passes through the second transflective lens, the first convex lens, the concave lens, the second convex lens and the third convex lens.
Preferably, in the polarized light wide-field transmission type converging illumination device, the second transflective lens is located at a focal point position of the light incident side of the first convex lens;
the focus of the light inlet side of the concave lens coincides with the focus of the light inlet side of the second convex lens.
Preferably, in the above polarized light wide-field transmission type convergent lighting device, the calculation formula of the field diameter D is:
D＝d*L/f3
wherein d is the diameter of the third convex lens, f3L is the distance from the focus of the light-emitting side of the third convex lens to the illumination area, and the illumination area is a circular area.
The invention also provides a polarized light wide-field transmission type convergent illumination method, which comprises the following steps:
the incident laser is separated into a first polarized light beam and a second polarized light beam which are vertical in polarization direction through a polarization beam splitting component;
performing polarization rotation on the first beam of polarized light through a polarization rotation component, so that the polarization direction of the first beam of polarized light is the same as or opposite to that of the second beam of polarized light;
synthesizing the second beam of polarized light and the first beam of polarized light after polarization rotation into a synthesized light beam which is coaxial in the same direction through a polarization light-combining component;
and integrating the synthesized light beams into illumination light meeting the field of view requirement through a transmission type beam expanding and converging component.
As can be seen from the above description, in the polarized light wide-field transmission type convergent illumination device and method provided by the technical scheme of the present invention, incident laser light is separated into a first polarized light beam and a second polarized light beam, which have perpendicular polarization directions, by a polarization beam splitting component; performing polarization rotation on the first beam of polarized light through a polarization rotation component, so that the polarization direction of the first beam of polarized light is the same as or opposite to that of the second beam of polarized light; synthesizing the second beam of polarized light and the first beam of polarized light after polarization rotation into a synthesized light beam which is coaxial in the same direction through a polarization light-combining component; and integrating the synthesized light beams into illumination light meeting the field of view requirement through a transmission type beam expanding and converging component. Therefore, the technical scheme of the invention can utilize two parts of polarized light with vertical polarization directions in the incident laser to perform polarized light illumination, thereby avoiding the waste of laser energy.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a polarized light wide-field transmission type convergent lighting device according to an embodiment of the present invention;
FIG. 2 is a first enlarged partial view of the polarized wide-field transmissive converging illuminator of FIG. 1;
FIG. 3 is a second enlarged partial view of the polarized wide-field transmissive converging illuminator of FIG. 1;
FIG. 4 is a third enlarged partial view of the polarized wide-field transmissive converging illuminator of FIG. 1;
fig. 5 is a schematic flowchart of a polarized light wide-field transmission type convergent lighting method according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a polarized light wide-field transmission type convergent lighting device according to an embodiment of the present invention, fig. 2 is a first partial enlarged view of the polarized light wide-field transmission type convergent lighting device shown in fig. 1, fig. 3 is a second partial enlarged view of the polarized light wide-field transmission type convergent lighting device shown in fig. 1, and fig. 4 is a third partial enlarged view of the polarized light wide-field transmission type convergent lighting device shown in fig. 1. The polarized light wide-field transmission type convergent lighting device comprises: the device comprises a polarized light beam splitting component 11, a polarized light rotation component 12, a polarized light beam combining component 13 and a transmission type beam expanding and converging component 14.
The polarized light beam splitting component is used for splitting incident laser into a first polarized light L1 and a second polarized light L2, polarization directions of which are vertical, the first polarized light L1 is incident to the polarized light optically rotating component 12, the second polarized light L2 is incident to the polarized light beam combining component 13, the incident laser has two polarization directions of A1 and A2, and A1 and A2 are vertical.
The polarized light optically active component 12 is configured to perform polarization rotation on the first polarized light L1 such that the polarization direction of the first polarized light L1 is the same as or opposite to the polarization direction of the second polarized light L2, and the polarization-rotated first polarized light L1 enters the polarized light combining component 13.
The polarized light combining component 13 is configured to combine the incident first polarized light L1 and the incident second polarized light L2 into a combined light beam which is coaxial in the same direction, and the combined light beam enters the transmissive beam expanding and converging component 14, the combined light beam emitted by the polarized light combining component 13 is a polarized light, and the polarization directions of the light beams in the combined light beam are the same or opposite, and the transmissive beam expanding and converging component 14 is configured to integrate the combined light into an illumination light meeting the requirement of the field of view.
Optionally, the polarized light beam splitting component 11 is a wallaston prism 110, the incident laser light is first separated into the first polarized light beam L1 with an included angle Φ and the second polarized light beam L by the wallaston prism 110, the first polarized light beam L and the second polarized light beam L are made of transparent uniaxial crystal such as calcite or quartz, two right-angle prisms with mutually perpendicular optical axes are adopted, and the two right-angle prisms are glued by glue along the inclined planes of the prisms, wherein the optical axis 111 of one right-angle prism is perpendicular to the optical axis 112 of the other right-angle prism.
The angle Φ by which the first polarized light L1 and the second polarized light L2 are separated is calculated as follows:
Φ≈2arcsin[(no-ne)tanθ]
theta is the set angle of the right-angle prism, noAnd neThe refractive indices of the two polarized lights.
The Wollaston prism 110 is selected to separate polarized light because the prism can enlarge the discrete angle of two linearly polarized lights and emit two linearly polarized lights at the same time.
Optionally, the polarized light rotation component 12 includes a mirror 121 and a rotation component 122, the first polarized light L1 enters the mirror 121, is reflected to the rotation component 122 through the mirror 121, and enters the polarized light combining component 13 after polarization rotation is performed on the rotation component 122, the polarized light combining component 13 includes a first transflective mirror 131, the second polarized light L2 vertically passes through the first transflective mirror 131, and the first polarized light L1 after polarization rotation enters the first transflective mirror 131 in a brewster angle direction and vertically exits the first transflective mirror.
Specifically, the first polarized light L and the second polarized light L separated and emitted by the Wollaston prism 110 are kept in the original direction, and perpendicularly enter the first transflective mirror 131 and perpendicularly exit, and propagate parallel to the optical axis of the first transflective mirror 131, the reflecting mirror 121 is a total reflecting mirror, the propagation direction of the first polarized light L1 is changed, and the first polarized light L1 can be incident on the first transflective mirror 131 in the brewster angle direction, so that the first polarized light L1 propagates in the direction parallel to the optical axis of the first transflective mirror 131 after passing through the first transflective mirror 131, so that two polarized lights with different propagation directions can be combined into a combined light beam coaxially propagating in the same direction by the first transflective mirror 131, the polarization direction of the first polarized light 5631 is changed by installing an optically active component 122 in the optical path of the first polarized light L from the reflecting mirror 121 to the first transflective mirror 131, and converting the first polarized light L into a light beam with the same polarization direction as the polarized light (polarization direction), so that the first polarized light is converted into a light beam 3590 polarized in the direction parallel with the second polarized light (polarization direction), or the light is converted into a light polarized by installing an optically active component L, so that the polarized light is rotated and the polarized light with the polarized light polarized in the same direction, so that the polarized light is converted into the polarized light polarized in the same direction of.
Selection of the optically active member 122: since the wave plate only changes the polarization state of incident light and does not change the light intensity, the optical rotation component with the same laser wavelength is the first choice of the optical rotation component, which reduces the loss of laser energy in the optical rotation process to the maximum extent. In an embodiment of the present invention, the optical rotation member 122 may be a half-wave plate.
The synthesized light beam is a polarized light beam with parallel polarization directions, and forms wide-field illumination light through the transmission type beam expanding and converging component 14.
Optionally, the transmissive expanded beam converging device 14 includes: a second mirror 141, a first convex lens 142, a concave lens 143, a second convex lens 144, and a third convex lens 145 having the same optical axis; the synthetic light sequentially passes through the second transflective lens, the first convex lens, the concave lens, the second convex lens and the third convex lens. The second transflective lens 141 is located at a focal point of the light incident side of the first convex lens 142; the focal point of the light incident side of the concave lens 143 coincides with the focal point of the light incident side of the second convex lens 144.
The combined light beam vertically passes through the second transflective mirror 141, and light rays incident on the second transflective mirror 141 in other directions are reflected, thereby avoiding stray light interference. Optionally, the first convex lens 142 is a plano-convex lens, a plane side surface of the first convex lens is an incident side, and a convex side surface of the first convex lens is an emergent side; the concave lens 143 is a plano-concave lens, the plane side of which is a light incident side, and the concave side of which is a light emergent side; the second convex lens 144 is a plano-convex lens, the convex side surface of which is a light incident side, and the planar side surface of which is a light emergent side; the third convex lens 145 is a plano-convex lens, the plane side of which is the light incident side, and the convex side of which is the light emergent side. The focal length of the first convex lens 142 is f1The focal length of the second convex lens 144 is f2。
The polarized light passing through the second mirror 141 is parallel to the optical axis of the second mirror 141, since the second mirror 141 is disposed at the focal point of the first convex lens 142, the parallel light exiting from the second mirror 141 passes through the first convex lens 142 and then exits onto the concave lens 143 as the maximum exit surface, and since the concave lens 143 coincides with the focal point of the second convex lens 144, the polarized light exiting onto the second convex lens 144 through the concave lens 143 exits onto the third convex lens 1453 parallel to the optical axis of the second convex lens 144 and then converges onto the focal point of the light exit side of the third convex lens 145, so as to form a wide field illumination light, which is illuminated onto a detection area, thereby achieving a wide field illumination effect.
In two embodiments of the present invention, the calculation formula of the field diameter D is:
D＝d*L/f3
where d is the diameter of the third convex lens 145, f3The focal length of the third convex lens 145, and L the distance from the focal point of the light-emitting side of the third convex lens 145 to the illumination area, which is a circular area.
In the polarized light wide-field transmission type converging illumination device provided by the embodiment of the invention, the converging and beam expanding treatment is carried out on the synthetic light, so that wide-field illumination can be formed, and polarized light illumination can be carried out by utilizing two parts of polarized light with vertical polarization directions in incident laser, so that the waste of laser energy is avoided.
Based on the foregoing embodiment, another embodiment of the present invention further provides a polarized light wide-field transmission type convergent lighting method, where the polarized light wide-field transmission type convergent lighting method is shown in fig. 5, and fig. 5 is a schematic flow diagram of the polarized light wide-field transmission type convergent lighting method according to the embodiment of the present invention, where the method includes:
step S11: the polarization beam splitting component splits incident laser into a first polarized light beam and a second polarized light beam which are vertical in polarization direction.
Step S12: and carrying out polarization rotation on the first beam of polarized light through a polarization rotation component, so that the polarization direction of the first beam of polarized light is the same as or opposite to that of the second beam of polarized light.
Step S13: and synthesizing the second beam of polarized light and the first beam of polarized light after polarization rotation into a synthesized light beam which is coaxial in the same direction through a polarization light-combining component.
Step S14: and integrating the synthesized light beams into illumination light meeting the field of view requirement through a transmission type beam expanding and converging component.
The polarized light wide-field transmission type convergent illumination method provided by the embodiment of the invention can be used for converging and expanding the synthesized light to form wide-field illumination, and can be used for polarized light illumination by utilizing two parts of polarized light with vertical polarization directions in incident laser, so that the waste of laser energy is avoided.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. As for the polarized light wide-field-of-view transmissive convergent illumination method disclosed in the embodiment, since it corresponds to the polarized light wide-field transmissive convergent illumination device disclosed in the embodiment, the description is relatively simple, and the relevant points can be referred to the description of the polarized light wide-field transmissive convergent illumination method corresponding part.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A polarized light wide-field transmission type convergent illumination device, comprising:
the device comprises a polarized light beam splitting component, a polarized light rotation component, a polarized light photosynthetic component and a transmission type beam expanding and converging component;
the polarized light beam splitting component is used for splitting incident laser into a first polarized light beam and a second polarized light beam which are vertical to the polarization direction, the first polarized light beam is incident to the polarized light optical rotation component, and the second polarized light beam is incident to the polarized light optical combination component;
the polarized light rotation component is used for carrying out polarization rotation on the first beam of polarized light, so that the polarization direction of the first beam of polarized light is the same as or opposite to that of the second beam of polarized light; the polarized and rotated first beam of polarized light enters the polarized light combining component;
the polarized light beam combining component is used for combining the incident first beam of polarized light and the incident second beam of polarized light into a beam of combined light which is coaxial in the same direction, and the combined light enters the transmissive beam expanding and converging component;
the transmission type beam expanding and converging component is used for integrating the synthesized light into illumination light meeting the requirement of a field of view; the transmissive beam expanding and converging component comprises: the second lens, the first convex lens, the concave lens, the second convex lens and the third convex lens are coaxial; the synthetic light sequentially passes through the second transflective lens, the first convex lens, the concave lens, the second convex lens and the third convex lens; the second lens is positioned at the focus position of the light incidence side of the first convex lens; the focus of the light inlet side of the concave lens and the focus of the light inlet side of the second convex lens are overlapped;
the first convex lens is a plano-convex lens, the plane of the first convex lens is a light inlet side, the convex surface of the first convex lens is a light outlet side, the concave lens is a plano-concave lens, the plane of the concave lens is a light inlet side, the concave surface of the concave lens is a light outlet side, the second convex lens is a plano-convex lens, the side surface of the convex surface of the second convex lens is a light inlet side, and the side surface of the plane of the second convex lens is a; the third convex lens is a plano-convex lens, the plane side surface of the third convex lens is a light inlet side, and the convex side surface of the third convex lens is a light outlet side;
the field diameter D is calculated as:
D＝d*L/f3
wherein d is the diameter of the third convex lens, f3L is the distance from the focus of the light-emitting side of the third convex lens to the illumination area, and the illumination area is a circular area.
2. A polarized light wide-field transmissive converging illumination device as claimed in claim 1, wherein said polarized light splitting component is a wollaston prism.
3. The polarized light wide-field transmissive convergent illumination device of claim 1, wherein the polarized light rotation means comprises: a mirror and an optical rotation member;
the first beam of polarized light is incident to the reflector, reflected to the optical rotation component through the reflector, and then is incident to the polarized light combining component after being polarized and rotated by the optical rotation component.
4. The polarized light wide-field transmissive convergent illumination device of claim 1, wherein the polarized light combining component comprises a first transreflective mirror;
the second beam of polarized light vertically passes through the first transflective lens;
and the first beam of polarized light after polarization rotation enters the first transflective mirror in the Brewster angle direction and vertically exits the first transflective mirror.
5. A polarized light wide-field transmission type convergent illumination method is characterized by comprising the following steps:
the incident laser is separated into a first polarized light beam and a second polarized light beam which are vertical in polarization direction through a polarization beam splitting component;
performing polarization rotation on the first beam of polarized light through a polarization rotation component, so that the polarization direction of the first beam of polarized light is the same as or opposite to that of the second beam of polarized light;
synthesizing the second beam of polarized light and the first beam of polarized light after polarization rotation into a synthesized light beam which is coaxial in the same direction through a polarization light-combining component;
integrating the synthesized light beams into illumination light meeting the field of view requirement through a transmission type beam expanding and converging component; the transmissive beam expanding and converging component comprises: the second lens, the first convex lens, the concave lens, the second convex lens and the third convex lens are coaxial; the synthetic light sequentially passes through the second transflective lens, the first convex lens, the concave lens, the second convex lens and the third convex lens; the second lens is positioned at the focus position of the light incidence side of the first convex lens; the focus of the light inlet side of the concave lens and the focus of the light inlet side of the second convex lens are overlapped;
the first convex lens is a plano-convex lens, the plane of the first convex lens is a light inlet side, the convex surface of the first convex lens is a light outlet side, the concave lens is a plano-concave lens, the plane of the concave lens is a light inlet side, the concave surface of the concave lens is a light outlet side, the second convex lens is a plano-convex lens, the side surface of the convex surface of the second convex lens is a light inlet side, and the side surface of the plane of the second convex lens is a; the third convex lens is a plano-convex lens, the plane side surface of the third convex lens is a light inlet side, and the convex side surface of the third convex lens is a light outlet side;
the field diameter D is calculated as:
D＝d*L/f3
wherein d is the diameter of the third convex lens, f3L is the distance from the focus of the light-emitting side of the third convex lens to the illumination area, and the illumination area is a circular area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711250226.7A CN107748444B (en) | 2017-12-01 | 2017-12-01 | Polarized light wide-field transmission type convergent illumination device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711250226.7A CN107748444B (en) | 2017-12-01 | 2017-12-01 | Polarized light wide-field transmission type convergent illumination device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107748444A CN107748444A (en) | 2018-03-02 |
| CN107748444B true CN107748444B (en) | 2020-07-24 |
Family
ID=61250393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711250226.7A Expired - Fee Related CN107748444B (en) | 2017-12-01 | 2017-12-01 | Polarized light wide-field transmission type convergent illumination device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107748444B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2593219Y (en) * | 2003-01-10 | 2003-12-17 | 中国科学院上海光学精密机械研究所 | High-efficiency high-power pulse laser polarization device |
| CN101806946B (en) * | 2010-03-05 | 2011-04-06 | 中国科学院上海光学精密机械研究所 | Optical beam expanding collimation system |
| CN102004373A (en) * | 2010-09-21 | 2011-04-06 | 中国海洋大学 | Underwater imaging device for annular laser lighting |
| CN102096293B (en) * | 2011-01-30 | 2012-06-27 | 河南科技大学 | Optical engine for three-piece liquid crystal on silicon (LCOS) laser projection display |
| CN102707584B (en) * | 2012-06-15 | 2014-03-12 | 杭州士兰明芯科技有限公司 | Double-light-beam exposure system and method for manufacturing photonic crystal mask layer |
| CN104849845B (en) * | 2015-05-22 | 2017-07-04 | 山东神戎电子股份有限公司 | High definition wide-angle Zoom laser illuminator |
-
2017
- 2017-12-01 CN CN201711250226.7A patent/CN107748444B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN107748444A (en) | 2018-03-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102537642B1 (en) | LCOS lighting via LOE | |
| JP2023009084A5 (en) | ||
| US20160357013A1 (en) | Display apparatus | |
| JP2007517241A5 (en) | ||
| JP2021506055A (en) | Optical lighting device | |
| US20160349508A1 (en) | Display apparatus | |
| TWI665470B (en) | System, method and apparatus for polarization control | |
| JP2015526768A (en) | Optical device and method for manufacturing such an optical device | |
| CN110989172B (en) | Waveguide display device with ultra-large field angle | |
| CN114072717A (en) | Apparatus and method for eye tracking based on imaging of an eye via light guide optical elements | |
| JP7457133B2 (en) | Transmission-reflection digital holographic microscope system | |
| CN103293650A (en) | Light conversion device, backlight module and display device | |
| CN107748444B (en) | Polarized light wide-field transmission type convergent illumination device and method | |
| JP2004004704A (en) | Beam splitter device and laser scanning microscope using the same | |
| US20090021829A1 (en) | Optical module | |
| CN112180665A (en) | LCD projector conjugated high-efficiency illumination system and projection method | |
| RU2297727C1 (en) | Liquid-crystal display lighting system (alternatives) | |
| CN205844655U (en) | There is the low veiling glare imaging device of coaxial-illuminating | |
| KR101667792B1 (en) | Optical apparatus using interference beam | |
| KR100675856B1 (en) | Light engine for a projection system | |
| CN220232120U (en) | Head-up display device | |
| CN220455604U (en) | Head-up display device | |
| KR20120009145A (en) | Polarizing optical device for photo-alignment | |
| RU2313813C2 (en) | Projection optical system | |
| JP6551891B2 (en) | Optical distribution device |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200724 Termination date: 20211201 |