CN108957601A - A kind of spreadlight lens - Google Patents
A kind of spreadlight lens Download PDFInfo
- Publication number
- CN108957601A CN108957601A CN201810962702.6A CN201810962702A CN108957601A CN 108957601 A CN108957601 A CN 108957601A CN 201810962702 A CN201810962702 A CN 201810962702A CN 108957601 A CN108957601 A CN 108957601A
- Authority
- CN
- China
- Prior art keywords
- light
- spreadlight lens
- light source
- half mirror
- fully reflecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
-
- 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
Abstract
The present invention relates to a kind of spreadlight lenses, with opposite rear end and front end, light source accommodating cavity is equipped in the rear end, the line at both the front end and the rear end center is axis, the spreadlight lens includes the first half mirrors and the first half mirrors for being in the axis two sides respectively, the first half mirror and the second half mirrors receive respectively and guide the light that light source is emitted in light source accommodating cavity, and project towards the first half sides where mirror；Wherein at least a part of light is emitted via the front end of the spreadlight lens, and at least outer peripheral surface of another part light via the first half mirror by front end is emitted.Spreadlight lens of the present invention can get biggish light filling angle.
Description
Technical field
The present invention relates to field of optical device technology, and in particular to it is a kind of illumination and light filling lens.
Background technique
Safety defense monitoring system using more and more extensive, almost spread over the every nook and cranny in city, in safety defense monitoring system, depending on
Frequency safety defense monitoring system is play important role, security protection video monitoring system is detected using video technique, monitoring is set up defences area
Domain and real-time display, the electronic system or network that record live image.The system is can also can in the poor place of lighting condition
Normal use can all be equipped with a set of light-supplementing system, according to different use environment and requirement, need to be equipped with different camera lens and phase
The light-supplementing system answered.Conventional several light-supplementing systems, full angle have certain limit, and with the development and application of camera lens
The needs of occasion, it is desirable that light-supplementing system full angle can accomplish 160 ° or more, even greater angle, it is therefore desirable to develop a
Lens arrangement is in order to meet the demand.
Summary of the invention
Based on this, it is necessary to for biggish light filling angle is obtained, provide a kind of novel spreadlight lens.
A kind of spreadlight lens, have opposite rear end and front end, the rear end be equipped with light source accommodating cavity, the front end with
The line at both rear ends center is axis, the spreadlight lens include be in respectively the axis two sides the first half mirrors and
The second half mirrors, the first half mirror and the second half mirror receive respectively and guide the light that light source is emitted in light source accommodating cavity,
And it is projected towards side where the first half mirror；Wherein at least a part of light is emitted via the front end of the spreadlight lens, until
Few another part light is emitted via the first half mirror by the outer peripheral surface of front end.
Several optional ways also provided below, but be not intended as the additional qualification to above-mentioned overall plan, only into
The supplement of one step is preferred, and under the premise of no technology or logical contradiction, each optional way can be individually for above-mentioned totality side
Case is combined, and be can also be and is combined between multiple optional ways.
Optionally, the first half mirror includes that the light for successively receiving and guiding light source to be emitted forms the first optical path
:
First transparent surface is in side of the light source accommodating cavity towards rear end；
First light-emitting surface is in front end side；
The first half mirror further includes for successively guiding light source emergent ray to form the second optical path:
Second transparent surface is in the inner wall of the light source accommodating cavity radial direction；
First fully reflecting surface is in the periphery of the first half mirror, and adjacent back end；
Second fully reflecting surface is in spreadlight lens front end side；
Second light-emitting surface is in the periphery of the first half mirror, and adjacent front end.
Optionally, the front end side of the first half mirror is equipped with the boss of the semi-circular shape higher than first light-emitting surface,
The medial surface of the boss is as second fully reflecting surface, and the lateral surface of the boss is as second light-emitting surface.
Optionally, the opposite sides of the boss provides second fully reflecting surface and second light-emitting surface respectively.
Optionally, the second half mirror includes for successively receiving and guiding light source emergent ray to form third optical path:
Third transparent surface is in side of the light source accommodating cavity towards rear end；
Third light-emitting surface is in front end side；
The second half mirror further includes for successively guiding light source emergent ray to form the 4th optical path:
4th transparent surface is in the inner wall of the light source accommodating cavity radial direction；
Third fully reflecting surface is in the periphery of the first half mirror, and adjacent back end；
4th light-emitting surface is in front end side.
Optionally, first transparent surface is concave surface, and the third transparent surface is convex surface.
Optionally, first light-emitting surface, the third light-emitting surface and the 4th light-emitting surface are the same of spreadlight lens
Face.
Optionally, first transparent surface and the 4th transparent surface are mutually linked as cylindrical shape.
Optionally, first fully reflecting surface and the third fully reflecting surface are the curved surface around spreadlight lens axis,
Described in the bus of the first fully reflecting surface and the third fully reflecting surface spreadlight lens axis is gradually distance from by rear end forward end.
Optionally, the bus relative to the third fully reflecting surface, the bus of first fully reflecting surface by rear end forward
Hold the trend far from spreadlight lens axis faster.
Its emergent ray of spreadlight lens of the invention is distributed mainly in the hemispherical space where lens side, is such as needed complete
Then two spreadlight lenses can be applied in combination for the light distribution in space.The spreadlight lens group usually cooperates signal to adopt in practical applications
Acquisition means or camera lens use, and the light that can be good at that light source is avoided to issue enters directly into signal pickup assembly or camera lens
In, effectively reduce system noise.
Detailed description of the invention
FIG. 1 to FIG. 8 is the three-dimensional structure diagram of spreadlight lens of embodiment of the present invention different angle；
Fig. 9 is spreadlight lens of embodiment of the present invention optical path distribution schematic diagram；
Figure 10 is the effect diagram that spreadlight lens of the embodiment of the present invention is applied in combination.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1~9, a kind of spreadlight lens of the present embodiment has opposite rear end and front end, is equipped with light in the rear end
Source accommodating cavity, under use state, light source is in the light source accommodating cavity, and the light source can be light emitting diode, halogen lamp, glimmering
Light lamp or discharge lamp etc..Preferably, the light source is light emitting diode.
The line at both the front end and the rear end center is axis, and the spreadlight lens includes being in the axis respectively
The first half mirrors of line two sides and the second half mirrors, for each half mirror, a part of the rotary body to be distributed around the axis (can
It is respectively seen as rotation 180 degree).Therefore the outer peripheral surface of each half mirror corresponding site is cambered surface, and cambered surface concrete shape prolongs depending on bus
Depending on stretching direction.
The first half mirror and the second half mirror receive respectively and guide the light that light source is emitted in light source accommodating cavity, and
Projected towards side where the first half mirrors；Its emergent ray of the spreadlight lens of the present embodiment is distributed mainly on where the first half mirror sides
Hemispherical space in, the light that can be good at avoiding light source to issue enters directly into signal pickup assembly or camera lens, reduces
Noise.
In the light of spreadlight lens outgoing, at least part light is emitted via the front end of the spreadlight lens, at least separately
Outer peripheral surface of a part of light via the first half mirror by front end is emitted.
From from global shape, spreadlight lens front end side is disc structure 10, and rear end side is cone structure, and including position
The first half cone 12 and the second half cone 11 in axis two sides, a part of first half cone 12 as the first half mirror, institute
The a part of the second half cone 11 as the second half mirror is stated, the outer diameter of second half cone 11 is slightly larger than first half cone 12
Outer diameter, therefore the two binding site present a step structure.
The rear end of first half cone 12 and 11 binding site of the second half cone has light source accommodating cavity 14, light source accommodating
14 inner peripheral surface of chamber is cylindrical structure.The front end side end face of the disc structure 10 is additionally provided with the boss 13 of semi-circular shape, and conduct
A part of the first half mirror, the opposite sides of the boss 13 provide the second fully reflecting surface 5 and the second light-emitting surface 6 respectively,
Boss 13 described in figure has the cross sectional shape of triangle, and the present embodiment only by taking triangle as an example, can also be in practical application
Other shapes, in figure on the section of the boss 13, second fully reflecting surface 5 and the second light-emitting surface 6 are folder triangle top
The both sides at angle.The first half mirror includes that the light for successively receiving and guiding light source to be emitted forms the first of the first optical path a
Transparent surface 1 and the first light-emitting surface 2；
First transparent surface 1 is in side of the light source accommodating cavity 14 towards rear end, and first transparent surface 1 is recessed
Face；First light-emitting surface 2 is in front end side, i.e., disc structure 10 is in front end side.
The first half mirror further include for successively guide light source emergent ray formed the second optical path b the second transparent surface 3,
First fully reflecting surface 4, the second fully reflecting surface 5 and the second light-emitting surface 6.
Second transparent surface 3 is in the radial inner wall of light source accommodating cavity 14；First fully reflecting surface 4 is in the first half
The periphery of mirror, is in and adjacent back end, first fully reflecting surface 4 are in the periphery of second transparent surface 3；Described second is complete
Reflecting surface 5 is in spreadlight lens front end side, is provided by the medial surface of the boss 13；Second light-emitting surface 6 is in described
The periphery of the first half mirrors, and adjacent front end, second light-emitting surface 6 are provided by the lateral surface of the boss 13, i.e., and are in institute
State the periphery of the second fully reflecting surface 5.
The second half mirror includes the third light transmission for successively receiving and guiding light source emergent ray to form third optical path c
Face 7 and third light-emitting surface.
The third transparent surface 7 is in side of the light source accommodating cavity 14 towards rear end, and the third transparent surface 7 is convex
Face, first transparent surface 1 and the third transparent surface 7 are respectively positioned on side of the light source accommodating cavity 14 towards rear end, and the two is in
Simultaneously adhere to the first half mirror and the second half mirror separately in the two sides of the axis.
The third light-emitting surface is in front end side, is same plane with first light-emitting surface 2, i.e. disc structure 10 exists
Front end side.
The second half mirror further include for successively guide light source emergent ray formed the 4th optical path d the 4th transparent surface 8,
Third fully reflecting surface 9 and the 4th light-emitting surface.
4th transparent surface 8 is in the radial inner wall of light source accommodating cavity 14, and mutually holds in the mouth with first transparent surface 3
It is connected in cylindrical shape.
The third fully reflecting surface 9 is in the periphery of the first half mirrors and adjacent back end, the third fully reflecting surface 9 are in institute
The periphery of the 4th transparent surface 8, first fully reflecting surface 4 and third fully reflecting surface 9 are stated respectively as 12 He of the first half cone
The outer peripheral surface of second half cone 11.
4th light-emitting surface is in front end side, is same plane with first light-emitting surface 2, i.e. disc structure 10 exists
Front end side.
Outer peripheral surface, front end side, the rear end side etc. that the present embodiment refers to only are interpreted as rough spatial position, are not intended as pair
The restriction in incidence and outgoing (reflection or refraction etc.) direction of light, such as certain fully reflecting surface is the outer peripheral surface of cone structure, but
Light incident direction may be to be not limited to from the incidence of the inside of outer peripheral surface from outside incidence, the trend of specific optical path is another
It illustrates, details are not described herein again.
First transparent surface 1, second transparent surface 3, the third transparent surface 7, the 4th transparent surface 8 are surrounded
Space be light source accommodating cavity 14, the light that light source is issued can be collected, effectively to improve the light efficiency of system.Light passes through
It is all to reflect when these faces.
First fully reflecting surface 4, second fully reflecting surface 5 and the third fully reflecting surface 9 are fully reflecting surface, are entered
It penetrates light to be totally reflected on these fully reflecting surfaces, to change shooting angle.
First light-emitting surface 2, second light-emitting surface 6 are light-emitting surface, and light is emitted to air after reflecting herein
In medium.
In conjunction with Fig. 9, the optical path trend of the present embodiment spreadlight lens is as follows.
First optical path a, light issue the medium that the first half mirrors are refracted by first transparent surface 1 through light source
In, refraction occurs then at first light-emitting surface 2 and is emitted to air dielectric.
Second optical path b, light are refracted into the medium of the first half mirrors after light source issues in second transparent surface 3
In, it is then totally reflected in first fully reflecting surface 4, second occurs at second fully reflecting surface 5 and is totally reflected,
Most second light-emitting surface 6 occurs refraction and is emitted to air finally, and light here can be as needed, by being totally reflected twice and
Refraction twice is so that shooting angle occurs greatly to change, to realize the light distribution of very big angle.
Third optical path c, light are refracted into Jie of the second half mirrors after light source issues in the third transparent surface 7
Then matter occurs refraction in first light-emitting surface 2 and is emitted to air dielectric.
4th optical path d, light are refracted into Jie of the second half mirrors after light source issues in the 4th transparent surface 8
Matter, after be totally reflected in the third fully reflecting surface 9, most first light-emitting surface 2 is emitted in air dielectric finally.
Light source emergent ray can be carried out wide-angle deviation by the present embodiment spreadlight lens, and emergent ray is covered almost
Half of spherical space.
Referring to Figure 10, the present embodiment spreadlight lens also can be used in combination, and spreadlight lens 100 and spreadlight lens 200 are respective
The first half mirrors arrange that the luminous energy that goes out of each spreadlight lens covers nearly half of spherical space, and arrow indicates angle in Figure 10 opposite to each other
About 160 degree of range, almost entire spherical space, signal pickup assembly or mirror can be covered when two spreadlight lenses are applied in combination
Head is between spreadlight lens 100 and spreadlight lens 200, since the light filling direction of spreadlight lens 100 and spreadlight lens 200 is in
Signal pickup assembly or camera lens two sides, therefore can be good at that light is avoided to enter directly into signal pickup assembly or camera lens,
Effectively reduce system noise.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of spreadlight lens has opposite rear end and front end, light source accommodating cavity, the front end and institute are equipped in the rear end
The line for stating both rear ends center is axis, and the spreadlight lens includes the first half mirrors and for being in the axis two sides respectively
2 half mirrors, which is characterized in that the first half mirror and the second half mirror receive respectively and light source in light source accommodating cavity guided to go out
The light penetrated, and projected towards side where the first half mirror；Before wherein at least a part of light is via the spreadlight lens
It brings out and penetrates, at least outer peripheral surface of another part light via the first half mirror by front end is emitted.
2. spreadlight lens as described in claim 1, which is characterized in that the first half mirror includes for successively receiving and guiding
The light of light source outgoing forms the first optical path:
First transparent surface is in side of the light source accommodating cavity towards rear end；
First light-emitting surface is in front end side；
The first half mirror further includes for successively guiding light source emergent ray to form the second optical path:
Second transparent surface is in the inner wall of the light source accommodating cavity radial direction；
First fully reflecting surface is in the periphery of the first half mirror, and adjacent back end；
Second fully reflecting surface is in spreadlight lens front end side；
Second light-emitting surface is in the periphery of the first half mirror, and adjacent front end.
3. spreadlight lens as claimed in claim 2, which is characterized in that the front end side of the first half mirror be equipped be higher than it is described
The boss of the semi-circular shape of first light-emitting surface, the medial surface of the boss as second fully reflecting surface, the boss it is outer
Side is as second light-emitting surface.
4. spreadlight lens as claimed in claim 3, which is characterized in that the opposite sides of the boss provides described second respectively
Fully reflecting surface and second light-emitting surface.
5. spreadlight lens as claimed in claim 2, which is characterized in that the second half mirror includes for successively receiving and guiding
Light source emergent ray forms third optical path:
Third transparent surface is in side of the light source accommodating cavity towards rear end；
Third light-emitting surface is in front end side；
The second half mirror further includes for successively guiding light source emergent ray to form the 4th optical path:
4th transparent surface is in the inner wall of the light source accommodating cavity radial direction；
Third fully reflecting surface is in the periphery of the first half mirror, and adjacent back end；
4th light-emitting surface is in front end side.
6. spreadlight lens as claimed in claim 5, which is characterized in that first transparent surface is concave surface, the third light transmission
Face is convex surface.
7. spreadlight lens as claimed in claim 5, which is characterized in that first light-emitting surface, the third light-emitting surface and institute
State the same face that the 4th light-emitting surface is spreadlight lens.
8. spreadlight lens as claimed in claim 5, which is characterized in that first transparent surface and the 4th transparent surface are mutual
Linking is cylindrical shape.
9. spreadlight lens as claimed in claim 5, which is characterized in that first fully reflecting surface and the third fully reflecting surface
Be the curved surface around spreadlight lens axis, wherein the bus of first fully reflecting surface and the third fully reflecting surface from rear end to
Front end is gradually distance from spreadlight lens axis.
10. spreadlight lens as claimed in claim 9, which is characterized in that described relative to the bus of the third fully reflecting surface
Trend of the bus of first fully reflecting surface by rear end forward end far from spreadlight lens axis is faster.
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 true CN108957601A (en) | 2018-12-07 |
| CN108957601B CN108957601B (en) | 2023-08-22 |
Family
ID=64473703
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) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113131330A (en) * | 2021-03-31 | 2021-07-16 | 杭州耀芯科技有限公司 | Laser luminous power monitoring system, monitoring method and collimating lens thereof |
| CN113347327A (en) * | 2021-04-22 | 2021-09-03 | 浙江大华技术股份有限公司 | Polarized lens and camera |
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| JP2005292561A (en) * | 2004-04-01 | 2005-10-20 | Nec Viewtechnology Ltd | Light source device and projection type display device |
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| CN113131330A (en) * | 2021-03-31 | 2021-07-16 | 杭州耀芯科技有限公司 | Laser luminous power monitoring system, monitoring method and collimating lens thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108957601B (en) | 2023-08-22 |
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