CN108957601B - Polarizing lens - Google Patents
Polarizing lens Download PDFInfo
- Publication number
- CN108957601B CN108957601B CN201810962702.6A CN201810962702A CN108957601B CN 108957601 B CN108957601 B CN 108957601B CN 201810962702 A CN201810962702 A CN 201810962702A CN 108957601 B CN108957601 B CN 108957601B
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- Prior art keywords
- light
- half mirror
- total reflection
- light source
- rear end
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/03—Combinations of cameras with lighting apparatus; Flash units
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B2003/0093—Simple or compound lenses characterised by the shape
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention relates to a polarized lens, which is provided with a rear end and a front end which are opposite, wherein the rear end is provided with a light source accommodating cavity, the connecting line between the centers of the front end and the rear end is an axis, the polarized lens comprises a first half mirror and a first half mirror which are respectively arranged at two sides of the axis, and the first half mirror and the second half mirror respectively receive and guide light rays emitted by a light source in the light source accommodating cavity and are projected towards the side where the first half mirror is arranged; at least one part of light rays are emitted through the front end of the polarized lens, and at least the other part of light rays are emitted through the outer peripheral surface of the first half mirror, which is close to the front end. The polarized lens can obtain a larger light supplementing angle.
Description
Technical Field
The invention relates to the technical field of optical devices, in particular to a lens for illumination and light supplementing.
Background
The application of the security monitoring system is more and more widespread, almost all the corners of the city are covered, in the security monitoring system, the video security monitoring system plays an important role, and the security video monitoring system utilizes the video technology to detect and monitor the security area and display and record the electronic system or network of the field image in real time. The system can be provided with a set of light supplementing system for normal use in places with poor lighting conditions, and different lenses and corresponding light supplementing systems are required to be provided according to different use environments and requirements. Conventional light supplementing systems have a certain limit on the total angle, and with the development of lenses and the needs of application occasions, the total angle of the light supplementing system is required to be more than 160 degrees and even larger, so that a lens structure needs to be developed to meet the needs.
Disclosure of Invention
Based on this, it is necessary to provide a novel polarized lens for obtaining a large light supplementing angle.
The polarized lens is provided with a rear end and a front end which are opposite, a light source accommodating cavity is arranged at the rear end, a connecting line between the centers of the front end and the rear end is an axis, the polarized lens comprises a first half mirror and a second half mirror which are respectively arranged at two sides of the axis, and the first half mirror and the second half mirror respectively receive and guide light rays emitted by a light source in the light source accommodating cavity and are projected towards the side where the first half mirror is arranged; at least one part of light rays are emitted through the front end of the polarized lens, and at least the other part of light rays are emitted through the outer peripheral surface of the first half mirror, which is close to the front end.
The following provides several alternatives, but not as additional limitations to the above-described overall scheme, and only further additions or preferences, each of which may be individually combined for the above-described overall scheme, or may be combined among multiple alternatives, without technical or logical contradictions.
Optionally, the first half mirror includes a first light path for sequentially receiving and guiding light rays emitted from the light source:
the first light transmission surface is positioned at one side of the light source accommodating cavity facing the rear end;
the first light-emitting surface is positioned at one side of the front end;
the first half mirror further comprises a second light path for sequentially guiding emergent rays of the light source:
the second light transmission surface is positioned on the radial inner wall of the light source accommodating cavity;
the first total reflection surface is arranged on the periphery of the first half mirror and is adjacent to the rear end;
the second total reflection surface is positioned at one side of the front end of the polarized lens;
the second light emitting surface is positioned at the periphery of the first half mirror and is adjacent to the front end.
Optionally, a semicircular boss higher than the first light-emitting surface is arranged at one side of the front end of the first half mirror, the inner side surface of the boss is used as the second total reflection surface, and the outer side surface of the boss is used as the second light-emitting surface.
Optionally, the opposite sides of the boss respectively provide the second total reflection surface and the second light emitting surface.
Optionally, the second half mirror is used for sequentially receiving and guiding the emergent light rays of the light source to form a third light path:
the third light transmission surface is positioned at one side of the light source accommodating cavity facing the rear end;
the third light-emitting surface is positioned at one side of the front end;
the second half mirror is further used for guiding emergent rays of the light source to form a fourth light path in sequence:
a fourth light-transmitting surface positioned on the radial inner wall of the light source accommodating cavity;
the third total reflection surface is arranged on the periphery of the first half mirror and is adjacent to the rear end;
the fourth light-emitting surface is positioned at one side of the front end.
Optionally, the first light-transmitting surface is a concave surface, and the third light-transmitting surface is a convex surface.
Optionally, the first light emitting surface, the third light emitting surface and the fourth light emitting surface are the same surface of a polarized lens.
Optionally, the first light-transmitting surface and the fourth light-transmitting surface are mutually connected to form a cylinder shape.
Optionally, the first total reflection surface and the third total reflection surface are curved surfaces around the axis of the polarized lens, and a generatrix of the first total reflection surface and the third total reflection surface is gradually far away from the axis of the polarized lens from the rear end to the front end.
Optionally, the generatrix of the first total reflection surface tends to be more distant from the polarizing lens axis from the rear end toward the front end than the generatrix of the third total reflection surface.
The emergent light of the polarized lens is mainly distributed in the hemispherical space where one side of the lens is positioned, and if the light distribution in the whole space is needed, the two polarized lenses can be combined for use. In practical application, the polarized lens group is often matched with a signal acquisition device or a lens, so that light rays emitted by a light source can be well prevented from directly entering the signal acquisition device or the lens, and system noise is effectively reduced.
Drawings
Fig. 1 to 8 are perspective structure diagrams of different angles of a polarized lens according to an embodiment of the present invention;
FIG. 9 is a schematic diagram showing the distribution of the optical paths of the polarized lens according to the embodiment of the invention;
fig. 10 is a schematic diagram showing the effect of the combination of the polarized lenses according to the embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 9, the polarized lens of the present embodiment has opposite rear and front ends, and a light source accommodating cavity is provided at the rear end, and in a use state, a light source is located in the light source accommodating cavity, and the light source may be a light emitting diode, a halogen lamp, a fluorescent lamp, a discharge lamp, or the like. Preferably, the light source is a light emitting diode.
The line between the centers of the front end and the rear end is an axis, and the polarized lens includes a first half mirror and a second half mirror which are respectively located on two sides of the axis, and each half mirror is a part of a rotating body distributed around the axis (which can be respectively regarded as rotating 180 degrees). Therefore, the outer peripheral surface of the corresponding part of each half mirror is an arc surface, and the specific shape of the arc surface depends on the extending direction of the bus.
The first half mirror and the second half mirror respectively receive and guide light rays emitted by the light source in the light source accommodating cavity, and project towards the side where the first half mirror is positioned; the emergent light of the polarized lens of the embodiment is mainly distributed in the hemispherical space where one side of the first half mirror is located, so that the light emitted by the light source can be well prevented from directly entering the signal acquisition device or the lens, and noise is reduced.
At least one part of light rays emitted by the polarized lens are emitted through the front end of the polarized lens, and at least the other part of light rays are emitted through the outer peripheral surface of the first half mirror, which is close to the front end.
From the overall shape, the front end side of the polarized lens is a disk structure 10, the rear end side is a cone structure, and the polarized lens comprises a first half cone 12 and a second half cone 11 which are positioned on two sides of an axis, wherein the first half cone 12 is used as a part of the first half mirror, the second half cone 11 is used as a part of the second half mirror, and the outer diameter of the second half cone 11 is slightly larger than the outer diameter of the first half cone 12, so that a step structure is formed at the joint of the two half cones.
The rear end of the joint part of the first half cone 12 and the second half cone 11 is provided with a light source accommodating cavity 14, and the inner peripheral surface of the light source accommodating cavity 14 is of a cylindrical structure. The front end surface of the disc structure 10 is further provided with a semicircular boss 13, and the semicircular boss is used as a part of the first half mirror, and the opposite sides of the boss 13 are respectively provided with a second total reflection surface 5 and a second light-emitting surface 6, where the boss 13 has a triangular cross-section shape, and in this embodiment, only a triangle is taken as an example, and in practical application, other shapes may be used, where the second total reflection surface 5 and the second light-emitting surface 6 are two sides of a vertex angle of a triangle in the cross section of the boss 13. The first half mirror comprises a first light-transmitting surface 1 and a first light-emitting surface 2 which are used for sequentially receiving and guiding light rays emitted by the light source to form a first light path a;
the first light-transmitting surface 1 is positioned at one side of the light source accommodating cavity 14 facing the rear end, and the first light-transmitting surface 1 is a concave surface; the first light emitting surface 2 is located at the front end side, that is, the disc structure 10 is located at the front end side.
The first half mirror further comprises a second light-transmitting surface 3, a first total reflection surface 4, a second total reflection surface 5 and a second light-emitting surface 6, wherein the second light-transmitting surface 3, the first total reflection surface 4 and the second total reflection surface 5 are used for guiding light rays emitted by the light source to form a second light path b in sequence.
The second light-transmitting surface 3 is positioned on the radial inner wall of the light source accommodating cavity 14; the first total reflection surface 4 is positioned at the periphery of the first half mirror, is positioned near the rear end, and the first total reflection surface 4 is positioned at the periphery of the second light transmission surface 3; the second total reflection surface 5 is positioned at one side of the front end of the polarized lens and is provided by the inner side surface of the boss 13; the second light-emitting surface 6 is located at the outer periphery of the first half mirror and is adjacent to the front end, and the second light-emitting surface 6 is provided by the outer side surface of the boss 13, that is, located at the outer periphery of the second total reflection surface 5.
The second half mirror comprises a third light-transmitting surface 7 and a third light-emitting surface, wherein the third light-transmitting surface 7 and the third light-emitting surface are used for sequentially receiving and guiding light rays emitted by the light source to form a third light path c.
The third light-transmitting surface 7 is located at one side of the light source accommodating cavity 14 facing the rear end, the third light-transmitting surface 7 is a convex surface, the first light-transmitting surface 1 and the third light-transmitting surface 7 are both located at one side of the light source accommodating cavity 14 facing the rear end, and the first light-transmitting surface 1 and the third light-transmitting surface 7 are located at two sides of the axis and are respectively the first half mirror and the second half mirror.
The third light emitting surface is located at the front end side and is in the same plane with the first light emitting surface 2, that is, the disc structure 10 is located at the front end side.
The second half mirror further comprises a fourth light-transmitting surface 8, a third total reflection surface 9 and a fourth light-emitting surface, wherein the fourth light-transmitting surface 8, the third total reflection surface 9 and the fourth light-emitting surface are used for guiding light rays emitted by the light source to form a fourth light path d in sequence.
The fourth light-transmitting surface 8 is located on the radial inner wall of the light source accommodating cavity 14, and is connected with the first light-transmitting surface 3 to form a cylinder shape.
The third total reflection surface 9 is located at the outer periphery of the first half mirror and adjacent to the rear end, the third total reflection surface 9 is located at the outer periphery of the fourth light transmission surface 8, and the first total reflection surface 4 and the third total reflection surface 9 are respectively used as the outer peripheral surfaces of the first half cone 12 and the second half cone 11.
The fourth light-emitting surface is located at the front end side and is in the same plane with the first light-emitting surface 2, that is, the disc structure 10 is located at the front end side.
The outer peripheral surface, the front end side, the rear end side, and the like mentioned in this embodiment are only understood as approximate spatial positions, and are not limiting on the directions of incidence and emission (reflection or refraction, etc.) of the light, for example, a certain total reflection surface is an outer peripheral surface of a cone structure, but the incidence direction of the light may be incident from the inner side of the outer peripheral surface, and is not limited to the incidence from the outer side, and the specific direction of the light path is not described in detail herein.
The space surrounded by the first light-transmitting surface 1, the second light-transmitting surface 3, the third light-transmitting surface 7 and the fourth light-transmitting surface 8 is a light source accommodating cavity 14, so that light emitted by a light source can be effectively collected, and the light efficiency of the system is improved. Light is refracted as it passes through the faces.
The first total reflection surface 4, the second total reflection surface 5 and the third total reflection surface 9 are total reflection surfaces, and incident light is totally reflected on these total reflection surfaces, so as to change the emergent angle.
The first light-emitting surface 2 and the second light-emitting surface 6 are light-emitting surfaces, and light rays are refracted and emitted to an air medium.
Referring to fig. 9, the path of the polarized lens of the present embodiment is as follows.
The first light path a is that light rays are emitted by the light source, are refracted through the first light-transmitting surface 1 and enter a medium of the first half mirror, and are refracted at the first light-emitting surface 2 and exit to an air medium.
The second light path b is used for refracting light rays into a medium of the first half mirror after the light rays are emitted by the light source and enter the medium of the second light-transmitting surface 3, then the light rays are subjected to total reflection on the first total reflection surface 4, then the light rays are subjected to second total reflection on the second total reflection surface 5, finally the light rays are refracted and emitted to the air on the second light-emitting surface 6, and the angle of the light rays can be greatly changed through twice total reflection and twice refraction according to requirements, so that the light distribution of a very large angle is realized.
And the third light path c is used for refracting light rays to enter the medium of the second half mirror at the third light-transmitting surface 7 after the light rays are emitted by the light source, and then refracting light rays to exit to the air medium at the first light-emitting surface 2.
And a fourth light path d, light rays are emitted by the light source, are refracted at the fourth light-transmitting surface 8 and enter the medium of the second half mirror, are totally reflected at the third total reflection surface 9, and finally exit from the first light-emitting surface 2 to the air medium.
The polarizing lens of the embodiment can deflect the emergent light of the light source in a large angle, so that the emergent light can cover almost half spherical space.
Referring to fig. 10, the polarized lenses of the present embodiment may be used in combination, the first half mirrors of the polarized lenses 100 and 200 are arranged opposite to each other, the light output energy of each polarized lens covers approximately half of the spherical space, the arrow in fig. 10 indicates that the angle range is about 160 degrees, when the two polarized lenses are used in combination, almost the whole spherical space can be covered, and the signal acquisition device or lens is located between the polarized lenses 100 and 200, because the light supplementing directions of the polarized lenses 100 and 200 are located at two sides of the signal acquisition device or lens, light can be well prevented from directly entering the signal acquisition device or lens, and system noise is effectively reduced.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (2)
1. The polarized lens is provided with a rear end and a front end which are opposite, wherein the rear end is provided with a light source accommodating cavity, a connecting line between the centers of the front end and the rear end is an axis, and the polarized lens comprises a first half mirror and a second half mirror which are respectively arranged at two sides of the axis; at least one part of light rays are emitted through the front end of the polarized lens, and at least one other part of light rays are emitted through the outer peripheral surface of the first half mirror, which is close to the front end;
the first half mirror comprises a first light path for sequentially receiving and guiding light rays emitted by the light source to form a first light path:
the first light transmission surface is positioned at one side of the light source accommodating cavity facing the rear end;
the first light-emitting surface is positioned at one side of the front end;
the first half mirror further comprises a second light path for sequentially guiding emergent rays of the light source:
the second light transmission surface is positioned on the radial inner wall of the light source accommodating cavity;
the first total reflection surface is arranged on the periphery of the first half mirror and is adjacent to the rear end;
the second total reflection surface is positioned at one side of the front end of the polarized lens;
the second light emitting surface is positioned at the periphery of the first half mirror and is adjacent to the front end;
a semicircular boss higher than the first light-emitting surface is arranged on one side of the front end of the first half mirror, the inner side surface of the boss is used as the second total reflection surface, and the outer side surface of the boss is used as the second light-emitting surface;
the second half mirror is used for sequentially receiving and guiding the emergent rays of the light source to form a third light path:
the third light transmission surface is positioned at one side of the light source accommodating cavity facing the rear end;
the third light-emitting surface is positioned at one side of the front end;
the second half mirror is further used for guiding emergent rays of the light source to form a fourth light path in sequence:
a fourth light-transmitting surface positioned on the radial inner wall of the light source accommodating cavity;
the third total reflection surface is arranged on the periphery of the second half mirror and is adjacent to the rear end;
a fourth light-emitting surface at one side of the front end;
the first light-transmitting surface is a concave surface, and the third light-transmitting surface is a convex surface;
the first light-emitting surface, the third light-emitting surface and the fourth light-emitting surface are the same surface of the polarized lens and are planes;
the second light-transmitting surface and the fourth light-transmitting surface are mutually connected to form a cylinder;
the first total reflection surface and the third total reflection surface are curved surfaces around the axis of the polarized lens, wherein the generatrix of the first total reflection surface and the third total reflection surface is gradually far away from the axis of the polarized lens from the rear end to the front end;
the first total reflection surface has a generatrix which tends to be more rapidly away from the polarized lens axis from the rear end toward the front end than the third total reflection surface.
2. The polarized lens of claim 1, wherein the second total reflection surface and the second light exit surface are provided on opposite sides of the boss, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810962702.6A CN108957601B (en) | 2018-08-22 | 2018-08-22 | Polarizing lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810962702.6A CN108957601B (en) | 2018-08-22 | 2018-08-22 | Polarizing lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108957601A CN108957601A (en) | 2018-12-07 |
| CN108957601B true CN108957601B (en) | 2023-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810962702.6A Active CN108957601B (en) | 2018-08-22 | 2018-08-22 | Polarizing lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108957601B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113131330B (en) * | 2021-03-31 | 2022-10-21 | 杭州耀芯科技有限公司 | Laser luminous power monitoring system, monitoring method and collimating lens thereof |
| CN113347327B (en) * | 2021-04-22 | 2022-08-19 | 浙江大华技术股份有限公司 | Polarized lens and camera |
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| CN106443846A (en) * | 2016-12-26 | 2017-02-22 | 京东方科技集团股份有限公司 | Lens, manufacturing method of lens, backlight panel and display device |
| CN107002977A (en) * | 2014-12-06 | 2017-08-01 | 苏州瀚墨材料技术有限公司 | Aquarium cultivates lighting device |
| CN206682702U (en) * | 2017-02-07 | 2017-11-28 | 苏州欧普照明有限公司 | A kind of lens, light source module group and lighting device |
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|---|---|---|---|---|
| CN1550871A (en) * | 2003-03-20 | 2004-12-01 | 大日本印刷株式会社 | Lenticular lens sheet |
| JP2005292561A (en) * | 2004-04-01 | 2005-10-20 | Nec Viewtechnology Ltd | Light source device and projection type display device |
| JP3148911U (en) * | 2008-12-19 | 2009-03-05 | 岡谷電機産業株式会社 | Lens for light emitting element |
| JP2013057942A (en) * | 2011-09-06 | 2013-03-28 | Asia Optical Co Ltd | Light guide component |
| KR20130070440A (en) * | 2011-12-19 | 2013-06-27 | 엘지이노텍 주식회사 | Member for controlling luminous flux and display device having the same |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108957601A (en) | 2018-12-07 |
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