CN2763827Y - Light homogenized light-collecting lens - Google Patents
Light homogenized light-collecting lens Download PDFInfo
- Publication number
- CN2763827Y CN2763827Y CN 200520001522 CN200520001522U CN2763827Y CN 2763827 Y CN2763827 Y CN 2763827Y CN 200520001522 CN200520001522 CN 200520001522 CN 200520001522 U CN200520001522 U CN 200520001522U CN 2763827 Y CN2763827 Y CN 2763827Y
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- light
- lens
- minute surface
- mirror surface
- bright dipping
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Abstract
The utility model relates to a light uniformizing and collecting lens having image radiation destroying and light collecting functions, which can uniformize light rays emitted by a light source with a light-emitting diode. The utility model comprises a light-entering mirror surface, a light-outlet mirror surface and a side wall, wherein the light-entering mirror surface is a convex lens surface; the light-outlet mirror surface is arranged on the other end opposite to the light-entering mirror surface on the utility model, a plurality of light distribution mirrors are simultaneously distributed on the light-outlet mirror surface, and the light distribution mirrors are arranged to form a mirror surface group; the side wall is a lens peripheral wall between the light-entering mirror surface and the light-outlet mirror surface. After light rays of a light source are inward emitted by the light-entering mirror surface, light rays with even luminosity and chromaticity and higher luminance can be projected through reflection of the side wall and light distribution and mix of the light distributing mirrors arranged on the light-outlet mirror surface.
Description
Technical field
The utility model relates to a kind of lens, relates in particular in addition homogenising of a kind of light that light emitting diode (LED) light source can be sent, and has and destroy picture and penetrate the light uniformization light collecting lens with light uniformization effect with the light harvesting function.
Background technology
Volume is little, heat production is low, power consumption is low, the characteristic of long service life owing to having for led light source, add recent improvement of Manufacturing Technology, its luminosity constantly promotes, and its manufacturing cost also reduces gradually, in foreseeable future, led light source will replace present bulb or daylight lamp source, and become most important luminescence component in the light fixture.In the illumination light source that is utilized at present, based on white light, but because the LED crystal grain of direct emission white light is not arranged at present, so must utilize different color light to mix the back to form white light, its illumination mode as shown in Figure 1, utilize a blue-ray LED crystal grain (LED chip) 11, cooperate yellow fluorescence bisque 12, the blue light 15 that is sent by blue-ray LED crystal grain 11 intensifies yellow fluorescence matter 121, produces gold-tinted 16, blue light and gold-tinted are owing to be complementary light, and the two can form white light after mixing.In the white LED light source 10, if the light (as light 14) that is sent by LED crystal grain 11 as described in path in the phosphor powder layer 12 longer, then the gold-tinted that it excited than light 13 excited many, therefore cause to form a light area after the ray cast by the outside phenomenon of Huang and colourity inequality partially gradually in center.Specifically; when it is utilized as general projection illumination; usually can before described led light source 10, install convex lens; so as to the light of concentrating led light source 10 to be launched; or simultaneously described led light source 10 is placed in the reflection shield 17 (as shown in Figure 2); the light 14 that scattering angle is bigger is reflected, to improve the brightness of projected area.Yet use the result of convex lens or reflection shield, not only can make projection light Luminance Distribution inequality, form halation in the periphery of light projected area easily, and the reflection localization effects of reflection shield is also limited.On the other hand, then because the characteristic of led light source structure also can cause the inclined to one side Huang of projected area outer peripheral areas color and the inconsistent shortcoming of colourity.In addition, when only using general lens cap to be overlying on the led light source, can know see described LED crystal grain with and the circuit board that coupled, or even printed literal on it on some comparatively exquisite device, will seem more not attractive in appearance.
The utility model content
The purpose of this utility model is to making light that led light source launches after concentrating through lens, still can colourity even, exempt the shortcoming that halation produces the luminosity inequality simultaneously, and increase reflection intensity of illumination, a kind of lens that are distributed with several lens are provided, characteristic by its luminous intensity distribution and mixed light, overcome the shortcoming of the peripheral colourity inequality of the originally existing illumination of led light source structure, and significantly improve the halation puzzlement that convex lens produced originally, produce one and be evenly distributed and the throw light of photochromic unanimity; Also can destroy the characteristic that picture is penetrated simultaneously, make described led light source when not luminous, still can keep attractive in appearance by more described lens.On the other hand, then be the total internal reflection that sees through sidewall, the light that the led light source scattering angle is bigger is concentrated, and improves the brightness of whole projection.
Light uniformization light collecting lens of the present utility model comprises a light inlet minute surface, and described light inlet minute surface is a convex lens; One bright dipping minute surface, described bright dipping minute surface are located at the relative other end of the above light inlet minute surface of described lens, and are distributed with several lens simultaneously on the described bright dipping minute surface, and described lens is also arranged formation one minute surface group; And a sidewall, described sidewall is the lens perisporium between described light inlet minute surface and described bright dipping minute surface; The light of light source by the incident of described light inlet minute surface after, can be by the reflection of sidewall, and the luminous intensity distribution and the mixed light of set described lens on the described bright dipping minute surface, and project luminosity and colourity is even and brightness is higher light.
Wherein, the curvature mirror of described bright dipping minute surface can be zero, or be the convex lens or the concavees lens face of plus or minus, and formed described lens on the described bright dipping minute surface, its vertical and horizontal curvature mirror is identical, arrangement modes such as it can matrix, honeycomb or concentric circles are evenly distributed on the surface of described bright dipping minute surface, form a minute surface group.Constitute each described lens of described minute surface group, its curvature mirror can all be all positive curvature or negative curvature, or mixes institute mutually by the described lens of positive curvature, negative curvature and form.In addition, each its level of described lens can be consistent or different with vertical radius-of-curvature.
The light that led light source sent, at first inject in the described lens by described incident minute surface, no matter described light is to penetrate or penetrate with other angle by LED crystal grain is vertical, or because of allochromatic colour light that described light excited, its scattering angle the greater, can be tentatively by the total internal reflection effect of sidewall, reflect concentrated, together see through several set lens of described bright dipping minute surface with other light more subsequently, individual rays is partial to the minute surface center to be concentrated, change the projected path of former each coloured light simultaneously, increase the purpose of brightness to reach that light is concentrated, and, make distribution of light more even by the redistributing and mix of each coloured light optical path, photochromic more consistent, and can significantly improve the defective of halation phenomenon and photochromic inequality in the past.
By above technical scheme as can be known, adopt described light uniformization light collecting lens, overcome the shortcoming of the peripheral colourity inequality of the originally existing illumination of led light source structure, and significantly improved the halation puzzlement that convex lens produced originally, produced one and be evenly distributed and the throw light of photochromic unanimity; Also can destroy the characteristic that picture is penetrated simultaneously, make described led light source when not luminous, still can keep attractive in appearance by more described lens.On the other hand, then be the total internal reflection that sees through sidewall, the light that the led light source scattering angle is bigger is concentrated, and improves the brightness of whole projection.
Below conjunction with figs. is further specified embodiment of the present utility model, following cited embodiment is in order to illustrate the utility model, be not in order to limit scope of the present utility model, any those skilled in the art, in not breaking away from spirit and scope of the present utility model, change of being done and retouching all still belong in the scope of technical solutions of the utility model.
Description of drawings
Fig. 1 is the optical path synoptic diagram of led light source;
Fig. 2 is for placing led light source the optical path synoptic diagram of reflection shield;
Fig. 3 is the schematic perspective view of the utility model embodiment;
Fig. 4 is the schematic perspective view of looking up of the utility model embodiment;
Fig. 5 is the cut-open view of Fig. 3 along the A-A line;
Fig. 6 is the optical path synoptic diagram of the utility model embodiment with the led light source irradiation;
Fig. 7 is the utility model embodiment another optical path synoptic diagram with the led light source irradiation;
Fig. 8 is that the utility model embodiment is with the synoptic diagram of led light source irradiation back light reflection with mixed light.
The figure number explanation:
10 led light sources
11 LED crystal grain, 12 phosphor powder layers
121 fluorescent substances, 13 light
14 light, 15 blue lights
16 gold-tinteds, 17 reflection shields
18 light
20 lens
21 bright dipping minute surfaces, 211 lens
22 light inlet minute surfaces, 24 blue lights
25 gold-tinteds
Embodiment
See also Fig. 3 and Fig. 4, described two figure are the schematic perspective view of the utility model embodiment.The lens 20 of the utility model embodiment comprise a light inlet minute surface 22, a bright dipping minute surface 21 and a sidewall 23.Described light inlet minute surface 22 and described bright dipping minute surface 21 are located at the relative two ends of described lens 20, and the lens perisporium of 21 of described light inlet minute surface 22 and described bright dipping minute surfaces is described sidewall 23, on the wherein said bright dipping minute surface 21 and be provided with several lens 211.The light that led light source sent can be entered in the described lens 20 by described light inlet minute surface 22 projections, and be cast out by described bright dipping minute surface 21, exposes on the subject matter.The led light source that is utilized among the utility model embodiment is one to add the white light LEDs of yellow fluorescence bisque by blue-ray LED crystal grain; it also can be white light LEDs that blue-ray LED crystal grain sends blue-light excited red bluish-green three fluorescence matter, sends the white light LEDs of the red bluish-green three fluorescence matter of ultraviolet excitation and with blue-ray LED crystal grain and yellow light LED crystal grain or with blue-ray LED crystal grain, green light LED crystal grain and red-light LED die package white light LEDs together by ultraviolet leds crystal grain, or utilizes alternate manner and must send the led light source of white light.
On the bright dipping minute surface 21 of the utility model embodiment lens 20 (seeing also Fig. 5), be provided with several lens 211, described lens 211 arranged distribution and form a minute surface group on described bright dipping minute surface 21, in order to emergent ray homogenising in addition; It also is provided with a sidewall 23, in order to concentrate the bigger light of its scattering angle of led light source.Please consult Fig. 6 again, when the utility model is implemented, can be with led light source 10, or be installed in the led light source 10 of reflection shield 17, place the rear of described lens 20.Blue light 24 light that blue-ray LED crystal grain 11 is launched, wherein scattering angle the greater can tentatively be concentrated by the reflection of described reflection shield 17, to reduce leakage, the described light of respectively launching and reflecting is further then injected in the described lens 20 by described light inlet minute surface 22.Because described light inlet minute surface 22 is a convex lens, therefore blue light 24 light (comprising reflection ray 14) of LED crystal grain 11 scatterings can be concentrated toward the minute surface center and be drawn close, therefore can reduce the angle of the whole scattering of described each blue light 24 light, and promote the brightness of projected area.Described each blue light 24 light are advanced in lens 20 thereafter, wherein said scattering angle is not enough to be reflected by reflection shield 17, and it is little of being reflected the light of handling 18 by described bright dipping minute surface 21 that its angle is unlikely to, can utilize the total internal reflection characteristic of incident angle greater than critical angle, see through sidewall 23, concentrate to the minute surface center reflection back, concentrates the effect of strengthening brightness and have.Subsequently, described each blue light 24 (light 18 that comprises total internal reflection) is promptly prepared outwards to be throwed away by described bright dipping minute surface 21 ends.Owing to be abound with several lens 211 on the described bright dipping minute surface 21, and when described lens 211 is the convex lens of positive curvature mirror, described each blue light 24 light will distribute through overbunching again, the light that originally is radial and non-intersect mistake is occured simultaneously, and by the common factor mixed light effect of each light, the light luminosity that led light source is projected is more even.Simultaneously, make light, also must can scatter irradiation, the halation problem that elimination utilized simple convex lens in the past and produced through luminous intensity distribution through described bright dipping minute surface 21 its minute surface outer peripheral areas by the effect of described lens 211.
On the other hand, see also Fig. 7, the blue light that blue-ray LED crystal grain 11 is sent, the yellow fluorescence matter that is contained in also can the fluorescence excitation bisque, thereby can produce gold-tinted 25 simultaneously.Described gold-tinted 25 also as previously mentioned can be via the mixed light effect of described lens 211, and projects uniform gold-tinted 25, equally also can avoid the generation of the peripheral halation in projected area by the luminous intensity distribution again of described lens 211.Therefore, blue light that is sent via blue-ray LED crystal grain 11 and the gold-tinted that is excited by the yellow fluorescence bisque, the two can produce white light because of being complementary mutually coloured light after the mixing.See also Fig. 8, when blue light 24 and luminous intensity distribution and the mixed light effect of gold-tinted 25 through described lens 211, even the optical path of light in phosphor powder layer that described blue-ray LED crystal grain 11 is sent is long (as Fig. 1, light 14), and when led light source 10 peripheral places produce yellow partially projection light, all can be by described lens 211, with the 25 deflection minute surface center refractions of part gold-tinted, and must carry out mixed light, thereby produce the more uniform projection light of colourity with blue light 24.In addition, add by sidewall and reflected concentrated light, also improved the projection brightness of led light source integral body.
The bright dipping minute surface 21 of the utility model embodiment, except that being zero the minute surface for utilizing curvature mirror, also can utilize the convex lens or the concavees lens face of plus or minus curvature mirror, and the lens 211 that is distributed on the described bright dipping minute surface 21, also can be all the lenslet of plus or minus curvature mirror, or mix institute mutually by the lens of positive and negative curvature mirror and form.No matter be described bright dipping minute surface 21 or described lens 211, when bearing the concavees lens face of curvature mirror for utilization, though can be with the light scattering of assembling by light inlet minute surface 22 in addition, but the effect of its scattering is the effect when utilizing convex lens also, except that can be in addition the homogenising with indivedual blue lights 24 or indivedual gold-tinted 25, also described dichroscope mixed light in addition can be produced uniform white light.If is purpose with the projection illumination, during projection demand that concentrate the expectation light area, brightness is higher, can utilize zero or the lens of the luminous lens of positive curvature mirror and positive curvature mirror be good.On the other hand, described lens 211 itself also is a lenslet, and the curvature of its vertical and horizontal direction can be consistent or different.In addition, the arrangement mode of described lens 211 can matrix-style, honeycomb mode or concentrically ringed mode, and arranged distribution is on described bright dipping minute surface 21, to form a minute surface group.Described minute surface group still can reach and destroy the purpose that picture is penetrated by the function of this luminous intensity distribution and mixed light except that the function with luminous intensity distribution and mixed light.When utilizing general lens or level crossing cover to be overlying on the led light source, can know see described LED crystal grain with and the circuit board that coupled, or even printed literal on it on some comparatively exquisite device, seems more not attractive in appearance.Therefore, see through the utility model, images such as more described LED crystal grain or literal through luminous intensity distribution and mixed light, can be destroyed its picture originally and penetrate, make the image that presents a fuzzy homogenizing, and can promote the led light source integral aesthetic property.
Claims (9)
1, a kind of light uniformization light collecting lens is characterized in that comprising:
One light inlet minute surface, described light inlet minute surface is a convex lens;
One bright dipping minute surface, described bright dipping minute surface are located at the relative other end of the above light inlet minute surface of described lens, and are distributed with several lens simultaneously on the described bright dipping minute surface, and described lens is also arranged formation one minute surface group; And
One sidewall, described sidewall are the lens perisporium between described light inlet minute surface and described bright dipping minute surface.
2, light uniformization light collecting lens according to claim 1 is characterized in that described bright dipping minute surface is that curvature mirror is zero minute surface.
3, light uniformization light collecting lens according to claim 2 is characterized in that the set described lens of described bright dipping minute surface is protruding face mirror.
4, light uniformization light collecting lens according to claim 2 is characterized in that the set described lens of described bright dipping minute surface is recessed face mirror.
5, according to claim 3 or 4 described light uniformization light collecting lenss, it is characterized in that the vertical and horizontal curvature mirror of each described lens is identical.
6, according to claim 3 or 4 described light uniformization light collecting lenss, it is characterized in that the vertical and horizontal curvature mirror of each described lens is different.
7,, it is characterized in that described lens arranges with matrix-style according to claim 3 or 4 described light uniformization light collecting lenss.
8,, it is characterized in that described lens arranges in the honeycomb mode according to claim 3 or 4 described light uniformization light collecting lenss.
9,, it is characterized in that described lens arranges in the concentric circles mode according to claim 3 or 4 described light uniformization light collecting lenss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520001522 CN2763827Y (en) | 2005-01-25 | 2005-01-25 | Light homogenized light-collecting lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520001522 CN2763827Y (en) | 2005-01-25 | 2005-01-25 | Light homogenized light-collecting lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2763827Y true CN2763827Y (en) | 2006-03-08 |
Family
ID=36141370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520001522 Expired - Fee Related CN2763827Y (en) | 2005-01-25 | 2005-01-25 | Light homogenized light-collecting lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2763827Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107621668A (en) * | 2016-07-14 | 2018-01-23 | 法雷奥北美有限公司 | Optical fiber optic panel with homogeneous light output |
-
2005
- 2005-01-25 CN CN 200520001522 patent/CN2763827Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107621668A (en) * | 2016-07-14 | 2018-01-23 | 法雷奥北美有限公司 | Optical fiber optic panel with homogeneous light output |
| CN107621668B (en) * | 2016-07-14 | 2020-11-03 | 法雷奥北美有限公司 | Fiber optic light panel with homogeneous light output |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060308 Termination date: 20100225 |