CN105674072A - Rectangular total-reflection LED projecting lens - Google Patents
Rectangular total-reflection LED projecting lens Download PDFInfo
- Publication number
- CN105674072A CN105674072A CN201610052068.3A CN201610052068A CN105674072A CN 105674072 A CN105674072 A CN 105674072A CN 201610052068 A CN201610052068 A CN 201610052068A CN 105674072 A CN105674072 A CN 105674072A
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- China
- Prior art keywords
- plane
- light
- light source
- lens
- reflection
- 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.)
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Classifications
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- 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
Abstract
The invention discloses a rectangular total-reflection LED projecting lens, and belongs to the technical field of illumination. The rectangular total-reflection LED projecting lens comprises a first end surface, a first plane, a second plane, a first curved surface, total-reflection surfaces and side walls, wherein the first end surface is a plane; the middle of the first end surface is recessed inwards to form a light source accommodating cavity for assembling a light source and a lens body; the first plane is a lens light reflecting surface; the second plane is parallel to the first plane; a certain distance is reserved between the second plane and the first plane; compared with the first plane, the second plane is closer to the light source; the first curved surface is a cambered surface; and the total-reflection surfaces and the side walls are used for transmitting light. The rectangular total-reflection LED projecting lens can meet requirements of a rectangular illuminating region, and the effect of light spots spaced from one another by different distances in two light path directions is achieved. A light beam formed by two-time reflection of light emitted from LED and a light beam formed by total reflection of the light emitted from the LED are superposed, and uniform illuminating light spots are formed on an objective illuminating surface, so that the ideal light distributing effect is achieved.
Description
Technical field:
The present invention relates to lighting technical field, be specifically related to a kind of rectangle total reflection LED light projector lens.
Background technology:
Light emitting diode (LightEmittedDiode, be called for short LED) is the forth generation light source after electric filament lamp, fluorescent lamp, gas-discharge lamp, has the advantage that energy-saving and environmental protection, the conventional light source such as pollution-free are incomparable. LED power, high efficiency, low cost development trend under, LED encapsulation is constantly in the Rapid development stage of new technology, new material. Along with the continuous maturation of the emerging encapsulation technology of LED, LED is also more and more extensive in the application of each side such as illumination, display, instruction, decoration, medical treatment, plant. At present, LED still focuses primarily on lighting field. Because the characteristic that the bright rich body of LED is luminous, in order to form satisfactory uniform light spots in specific region, meet relevant standard of illumination, it need to be carried out secondary optical design. While control light properly moves towards, make every effort to the high uniformity and the high-light-energy utilization rate that realize image planes illumination.
Fully-reflected type Projecting Lamp on market is mostly rotary symmetrical, rounded at illuminable area hot spot, and the angle in the both direction of light path is equal. For the region needing rectangular illumination, the Projecting Lamp of this rounded hot spot is obviously undesirable, and this is also the defect in existing light fixture market. Accordingly, it would be desirable to design the Projecting Lamp of a kind of new construction to meet the demand of rectangular illuminating area.
Summary of the invention:
For the problems referred to above, the technical problem to be solved in the present invention be to provide a kind of reasonable in design, easy to operate, can realize being formed the rectangle total reflection LED light projector lens of two optical path directions hot spot effect non-equally.
A kind of rectangle total reflection LED light projector lens of the present invention, it comprises the first end face, the first plane, the second plane, the first flexure plane, fully reflecting surface and sidewall; Described first end face is a plane, and in the middle part of it, internally depression forms light source containing cavity, for the assembling of light source Yu lens; Described first plane is lens exiting surface; Described second plane is parallel with the first plane and has certain distance, compares closer to light source with the first plane; Described first flexure plane is a cambered surface; Described fully reflecting surface and sidewall are used for light through lens transmission ray.
As preferably, the first described flexure plane is different with the bending curvature on horizontal profile direction at the sectional elevation of lens;
As preferably, there are two symmetrical top-surface cambers and lower surface camber in described sectional elevation direction, is totally reflected when passing through its surface for light;
As preferably, there are two symmetrical upper side walls and lower wall in described sectional elevation direction, and the light sent for light source reflects through its surface;
As preferably, there are two symmetrical left curved surfaces and right curved surface in described horizontal profile direction, is totally reflected when passing through its surface for light;
As preferably, there are two symmetrical left side walls and right side wall in described horizontal profile direction, and the light sent for light source reflects through its surface;
In the present invention, on sectional elevation, the light within light source send 40 degree, sequentially pass through the first flexure plane refraction, then through in the first planar exit to air;
On sectional elevation, the light beyond light source send 40 degree, sequentially pass through sidewall upper side wall and lower wall refraction, arrive top-surface camber and lower surface camber is totally reflected, then through in the first planar exit to air;
On horizontal profile, the light within light source send 30 degree, sequentially pass through the first flexure plane refraction, then through in the first planar exit to air;
On horizontal profile, the light beyond light source send 30 degree, sequentially pass through left side wall and right side wall refraction, arrive left curved surface and right curved surface is totally reflected, then through in the first planar exit to air;
One end that the light projector aperture of lens of the present invention is less is rectangular, and middle part caves inward formation lens opening, is used for putting into light source, does not allow and touches LED in light source and the process of lens arrangement, affects its life-span. Described lens opening outwardly convex, forms the first flexure plane, forms bending cambered surface in various degree in two orthogonal light paths of lens; The side of described lens opening is plane of refraction, encounters fully reflecting surface reflection after the light of this plane of refraction reflects; The axis direction of described lens opening is vertical with the end face that bore is less; The end face that described aperture of lens is bigger is exiting surface, is the first plane; Described first flexure plane and the first plane be respectively used in orthogonal two light paths of lens transmission light source launch 30 degree within and 40 degree within light; The side of described lens is fully reflecting surface, different at the subtended angle of orthogonal two optical path directions of lens, for 30 degree of-90 degree and 40 degree of-90 light spent of transmission light source transmitting; Having the platform of coupling above one end that described bore is bigger, platform is available for being assembled into lens justifying.
Beneficial effects of the present invention: it can meet the demand of rectangular illuminating area, it is achieved form two optical path directions hot spot effect non-equally; Light beam that the light that LED sends is formed through twice refraction and being overlapped mutually through the light beam of total reflection, forms uniform illumination spot, thus obtaining desirable light distribution effect on target illumination face.
Accompanying drawing illustrates:
For ease of illustrating, the present invention is embodied as and accompanying drawing is described in detail by following.
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the sectional view of A-A in Fig. 1;
Fig. 3 is the sectional view of B-B in Fig. 1;
Fig. 4 is the axonometric chart of the present invention;
Fig. 5 is the luminous intensity distribution schematic diagram of invention;
Fig. 6 is the light projector lens light intensity scatter chart of the present invention;
Fig. 7 is the Illumination Distribution figure on the light projector lens 1m place receiving screen of invention example.
In figure:
First end face the 1, first plane the 2, second plane the 3, first flexure plane 4, sectional elevation A, horizontal profile B, top-surface camber A1, lower surface camber A2, upper side wall A3, lower wall A4, left side wall B3, right side wall B4, left curved surface B1, right curved surface B2.
Detailed description of the invention:
As shown in Figures 1 to 7, this detailed description of the invention is by the following technical solutions: it comprises first end face the 1, first plane the 2, second plane the 3, first flexure plane 4, fully reflecting surface A1, A2, B1, B2 and sidewall A3, A4, B3, B4; Described first end face 1 is a plane, and in the middle part of it, internally depression forms light source containing cavity, for the assembling of light source Yu lens; Described first plane 2 is lens exiting surface; Described second plane 3 is parallel with the first plane 2 and has certain distance, compares closer to light source with the first plane 2; Described first flexure plane 4 is a cambered surface; Described fully reflecting surface A1, A2, B1, B2 and sidewall A3, A4, B3, B4 are respectively used to light through the reflection of its surface and refraction.
Wherein, the first described flexure plane 4 bending curvature on sectional elevation A and the horizontal profile B direction of lens is different; There are two symmetrical top-surface camber A1 and lower surface camber A2 in described sectional elevation A direction, is totally reflected when passing through its surface for light; There are two symmetrical upper side wall A3 and lower wall A4 in described sectional elevation A direction, and the light sent for light source reflects through its surface; There are two symmetrical left curved surface B1 and right curved surface B2 in described horizontal profile B direction, is totally reflected when passing through its surface for light; There are two symmetrical left side wall B3 and right side wall B4 in described horizontal profile B direction, and the light sent for light source reflects through its surface;
In this detailed description of the invention, on sectional elevation A, the light within light source send 40 degree, sequentially pass through the first flexure plane 4 and reflect, shine in air then through the first plane 2; On sectional elevation A, the light beyond light source send 40 degree, sequentially pass through upper side wall A3 and lower wall A4 refraction, arrive top-surface camber A1 and lower surface camber A2 and be totally reflected, shine in air then through the first plane 2; On horizontal profile B, the light within light source send 30 degree, sequentially pass through the first flexure plane 4 and reflect, shine in air then through the first plane 2; On horizontal profile B, the light beyond light source send 30 degree, sequentially pass through left side wall B3 and right side wall B4 refraction, arrive left curved surface B1 and right curved surface B2 and be totally reflected, shine in air then through the first plane 2;
One end that the light projector aperture of lens of this detailed description of the invention is less is rectangular, and middle part caves inward formation lens opening, is used for putting into light source, does not allow and touches LED in light source and the process of lens arrangement, affects its life-span. Described lens opening outwardly convex, forms the first flexure plane, forms bending cambered surface in various degree in two orthogonal light paths of lens; The side of described lens opening is plane of refraction, encounters fully reflecting surface reflection after the light of this plane of refraction reflects; The axis direction of described lens opening is vertical with the end face that bore is less; The end face that described aperture of lens is bigger is exiting surface, is the first plane; Light within described first cambered surface and the first plane be respectively used in orthogonal two light paths of lens that transmission light source is launched 30 degree and within 40 degree; The side of described lens is fully reflecting surface, different at the subtended angle of orthogonal two optical path directions of lens, for 30 degree of-90 degree and 40 degree of-90 light spent of transmission light source transmitting;Having the platform of coupling above one end that described bore is bigger, platform is available for being assembled into lens justifying, it is achieved lens modularity.
This detailed description of the invention can meet the demand of rectangular illuminating area, it is achieved forms two optical path directions hot spot effect non-equally; Light beam that the light that LED sends is formed through twice refraction and being overlapped mutually through the light beam of total reflection, forms uniform illumination spot, thus obtaining desirable light distribution effect on target illumination face.
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described. Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; described in above-described embodiment and description is that principles of the invention is described; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements both fall within the claimed scope of the invention. Claimed scope is defined by appending claims and equivalent thereof.
Claims (6)
1. rectangle total reflection LED light projector lens, it is characterised in that it comprises the first end face, the first plane, the second plane, the first flexure plane, fully reflecting surface and sidewall; Described first end face is a plane, and in the middle part of it, internally depression forms light source containing cavity, for the assembling of light source Yu lens; Described first plane is lens exiting surface; Described second plane is parallel with the first plane and has certain distance, compares closer to light source with the first plane; Described first flexure plane is a cambered surface; The transmission of the light that described fully reflecting surface and sidewall send for light source.
2. a kind of rectangle total reflection LED light projector lens according to claim 1, it is characterised in that the first described flexure plane is different with the bending curvature on horizontal profile direction at the sectional elevation of lens.
3. a kind of rectangle total reflection LED light projector lens according to claim 1, it is characterised in that there are two symmetrical top-surface cambers and lower surface camber in described sectional elevation direction, is totally reflected when passing through its surface for light.
4. a kind of rectangle total reflection LED light projector lens according to claim 1, it is characterised in that there are two symmetrical upper side walls and lower wall in described sectional elevation direction, and the light sent for light source reflects through its surface.
5. a kind of rectangle total reflection LED light projector lens according to claim 1, it is characterised in that there are two symmetrical left curved surfaces and right curved surface in described horizontal profile direction, is totally reflected when passing through its surface for light.
6. a kind of rectangle total reflection LED light projector lens according to claim 1, it is characterised in that there are two symmetrical left side walls and right side wall in described horizontal profile direction, and the light sent for light source reflects through its surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610052068.3A CN105674072A (en) | 2016-01-25 | 2016-01-25 | Rectangular total-reflection LED projecting lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610052068.3A CN105674072A (en) | 2016-01-25 | 2016-01-25 | Rectangular total-reflection LED projecting lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105674072A true CN105674072A (en) | 2016-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610052068.3A Pending CN105674072A (en) | 2016-01-25 | 2016-01-25 | Rectangular total-reflection LED projecting lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105674072A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442348A (en) * | 2018-11-28 | 2019-03-08 | 众普森科技（株洲）有限公司 | Optical lens, optical module and panel light |
| CN110375269A (en) * | 2019-07-30 | 2019-10-25 | 广州市焦汇光电科技有限公司 | Rectangular light spot lens |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204176556U (en) * | 2014-10-10 | 2015-02-25 | 深圳万润科技股份有限公司 | A kind of LED tunnel lamp lens and LED tunnel lamp |
| CN104566204A (en) * | 2013-10-12 | 2015-04-29 | 海洋王（东莞）照明科技有限公司 | Lens with spotlight and floodlight effects, lamp assembly and flashlight |
| CN204962618U (en) * | 2015-07-20 | 2016-01-13 | 深圳成光兴光电技术股份有限公司 | Lens with rectangle illuminance |
-
2016
- 2016-01-25 CN CN201610052068.3A patent/CN105674072A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104566204A (en) * | 2013-10-12 | 2015-04-29 | 海洋王（东莞）照明科技有限公司 | Lens with spotlight and floodlight effects, lamp assembly and flashlight |
| CN204176556U (en) * | 2014-10-10 | 2015-02-25 | 深圳万润科技股份有限公司 | A kind of LED tunnel lamp lens and LED tunnel lamp |
| CN204962618U (en) * | 2015-07-20 | 2016-01-13 | 深圳成光兴光电技术股份有限公司 | Lens with rectangle illuminance |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442348A (en) * | 2018-11-28 | 2019-03-08 | 众普森科技（株洲）有限公司 | Optical lens, optical module and panel light |
| CN110375269A (en) * | 2019-07-30 | 2019-10-25 | 广州市焦汇光电科技有限公司 | Rectangular light spot lens |
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Application publication date: 20160615 |
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| WD01 | Invention patent application deemed withdrawn after publication |