CN202209634U - Lens capable of transmitting light in fixed direction - Google Patents
Lens capable of transmitting light in fixed direction Download PDFInfo
- Publication number
- CN202209634U CN202209634U CN2011202878205U CN201120287820U CN202209634U CN 202209634 U CN202209634 U CN 202209634U CN 2011202878205 U CN2011202878205 U CN 2011202878205U CN 201120287820 U CN201120287820 U CN 201120287820U CN 202209634 U CN202209634 U CN 202209634U
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- Prior art keywords
- reflector
- light
- cup
- convex lens
- lens
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Abstract
The utility model discloses a lens capable of transmitting light in a fixed direction, which comprises a reflective cup and a convex arranged at the bottom of the reflective cup and connected with the reflective cup. The surface of the outer wall of the convex faces the opening of the convex, the surface of the inner wall of the convex forms a light source hole with the bottom of the reflective cup for containing a light source, and the reflective cup is in a horn shape. The side of the reflective cup is provided with a notch right facing a target area where light is projected. The lens capable of transmitting light in the fixed direction projects most of the light on a single side surface by means of the refraction function of the convex and projects part of the light of the light source deviating from the single side surface on the single side surface by means of the reflective function of the surface of the outer wall of the reflective cup so as to improve utilization efficiency of the light of the light source, illumination intensity of the light source and the evenness of the illumination.
Description
Technical field
The utility model relates to a kind of lens, refers in particular to a kind ofly to utilize the combination of reflector and convex lens to accomplish the directed luminous lens to the single side face light projector.
Background technology
Convex lens and concave mirror are primary elements commonly used in the optical instrument, and the transparent mirror body that convex lens are worn into sphere by the two sides is formed, and concave mirror is by simultaneously being that to be opaque mirror body form for concave surface and another side; Convex lens mainly play the refraction effect to light, and concave mirror mainly plays reflex to light.
For the advantage that fully utilizes concave mirror and convex lens solves real-life problem, people often combine concave mirror and convex lens, form compound lens.Traditional compound lens is a surfaces of revolution structure; It mainly is to utilize the total reflection principle of light that light is reflected away; Its reflection mode mainly contains following two kinds: a kind of is that light is assembled at an angle; Fully reflecting surface convergent lens as shown in Figure 1, another kind is that light is dispersed at an angle, fully reflecting surface divergent lens as shown in Figure 2.When it is applied to the single side face light projector, like car light, places such as Projecting Lamp, no matter this kind compound lens is converging ray or divergent rays, all will cause and have only half the ray cast and purpose screen, and second half light will depart from the purpose screen.Common way is that lens and purpose are shielded angled placement, though can improve the utilization rate of light like this, has but caused the uneven problem of purpose screen irradiation.
China's utility model patent number is: " ZL201020154480.4 "; Patent name is: disclose a kind of many minute surfaces of combined type beam condensing unit in the patent document of " many minute surfaces of combined type beam condensing unit "; It is characterized in that: described beam condensing unit comprises light source, is positioned at the convex lens in light source dead ahead, is positioned at the concave mirror of light source periphery, the lampshade that is positioned at beam condensing unit the place ahead, convex lens attaching parts and concave mirror attaching parts, and it can be on the focus of convex lens of directional light with the light refraction that light source sends that light source is positioned at; Convex lens link to each other with lampshade through the convex lens attaching parts; The concave mirror that can the light that light source sends be reflected into directional light is positioned at the periphery of light source, and around distribution of light sources; Concave mirror links to each other with lampshade through the convex mirror attaching parts; Lampshade, convex lens attaching parts and concave mirror attaching parts are processed by light transmissive material.Many minute surfaces of combined type beam condensing unit in this patent document is the refraction formation parallel rays through the reflection of side concave mirror and middle convex lens; Though can improve the utilization rate of front side light; Increase brightness of illumination, but when it is applied to the single side face projection, will certainly reduce the utilization rate of source light; If change the crevice projection angle of itself and single side face, will certainly influence the uniformity of throw light.
Summary of the invention
The technical problem underlying that the utility model solves provides a kind of directed luminous lens; Utilize the combination of reflector and convex lens; Refraction and the reflector outside wall surface of the scattered beam that light source is sent through convex lens reflect to form parallel rays; Make reflection ray and refracted ray shine the purpose screen simultaneously, improve the utilization rate of source light, improve illumination intensity of light source and illumination uniformity.
For solving the problems of the technologies described above; The technical scheme that the utility model adopts is: a kind of directed luminous lens is provided; Comprise reflector, convex lens, the cup end that said convex lens are arranged on reflector, be connected the rim of a cup of the outside wall surface orientating reflex cup of said convex lens with reflector; The cup end of the internal face of said convex lens and reflector, surround the light source hole that is used to place light source; Being shaped as of said reflector is horn-like, and its side is provided with breach, and said breach faces the purpose zone of ray cast.
Wherein, the radian of the material of said reflector and its outside wall surface satisfies the condition of light generation total reflection.
Wherein, the outside wall surface of said reflector is coated with one deck reflectorized material.
Wherein, the breach of doing is the center for the central shaft with the rim of a cup of reflector, the part of radially outward cutting, and the arc angle of said breach projection on cross section is 60 °～300 °.
Wherein, the material of said convex lens is polymethyl methacrylate or Merlon.
Wherein, the material of said reflector is PC and acrylic material.
Wherein, said reflector rim of a cup extension is provided with location-plate, and said location-plate is with parallel at the bottom of the reflector cup.
Wherein, said location-plate is provided with locating hole, and said locating hole is a through hole.
The compound lens that the useful technique effect of the utility model is to be directed against prior art is when carrying out ray cast; Have only half the ray cast in single side face, and second half light departs from single side face, causes the not high situation of utilization rate of light; Or compound lens and single side face placed at an angle; Be used for light projector,, caused the not enough problem of the single side face irradiate light uniformity though improved the utilization rate of light like this to single side face.A kind of directed luminous lens that the utility model provides, the convex lens that are positioned at the reflector indentation, there pass through it to interception of rays, and most of light is thrown on the single side face; The outside wall surface that faces the reflector of single side face is passed through its surperficial reflex, makes the ray cast that partly departs from single side face on single side face.The utility model has increased the utilization rate and the illumination uniformity that has improved light source of light source through the reflex of the outside wall surface of reflector and the refraction action of convex lens.In addition, the directed luminous lens structure of the utility model is simplified, and production cost is lower, is fit to very much the production of scale.
Description of drawings
Fig. 1 is prior art fully reflecting surface convergent lens ray cast figure;
Fig. 2 is prior art fully reflecting surface divergent lens ray cast figure;
Fig. 3 is the longitudinal sectional drawing of directed luminous lens one embodiment of the utility model;
Fig. 4 is the three-dimensional structure diagram of directed luminous lens one embodiment of the utility model;
Fig. 5 is the vertical view of directed luminous lens one embodiment of the utility model;
Fig. 6 is the cross-sectional view of directed luminous lens one embodiment of the utility model;
Fig. 7 is the light path principle figure of directed luminous lens one embodiment of the utility model;
Fig. 8 is the total reflection surface chart of directed luminous lens one embodiment of the utility model.
Label declaration:
1, reflector, 2, convex lens, 3, light source hole, 4, location-plate, 5, first locating hole, 6, second locating hole, 7, the purpose screen, 8, incident ray, 9, total reflection light.
The specific embodiment
By the technology contents, the structural feature that specify the utility model, realized purpose and effect, know clearly below in conjunction with embodiment and conjunction with figs. and give explanation.
See also Fig. 3 and Fig. 4, the utility model relates to a kind of directed luminous lens, comprises reflector 1, convex lens 2; The cup end that said convex lens 2 are arranged on reflector 1, be connected with reflector 1; The rim of a cup of said convex lens 2 outside wall surface orientating reflex cups 1, the cup end of the internal face of said convex lens 2 and reflector 1, surround the light source hole 3 that is used to place light source, and being shaped as of said reflector 1 is horn-like; Its side is provided with breach, and said breach faces the purpose zone of ray cast.
The compound lens of prior art is when carrying out ray cast; Have only half the ray cast in single side face, and second half light departs from single side face, causes the not high situation of utilization rate of light; Or compound lens and single side face placed at an angle; Be used for light projector,, caused the not enough problem of the single side face irradiate light uniformity though improved the utilization rate of light like this to single side face.A kind of directed luminous lens that the utility model provides, the convex lens that are positioned at the indentation, there of reflector pass through it to interception of rays, and most of light is thrown on the single side face; The outside wall surface that faces the reflector of single side face is passed through its surperficial reflex, makes the ray cast that partly departs from single side face on single side face.The utility model has increased the utilization rate and the illumination uniformity that has improved light source of light source through the reflex of reflector outside wall surface and the refraction action of convex lens.In addition, the directed luminous lens structure of the utility model is simplified, and production cost is lower, is fit to very much the production of scale.
Said breach is meant that the central shaft with the rim of a cup of reflector is the center, radially the outside part of cutting of rotation.
Said single side face be meant with the indentation, there of reflector over against face.
With reference to Fig. 5 and Fig. 6; In one embodiment, in the cross section of reflector 1, the breach radian of reflector 1 is a; A is the angle in ray refraction zone; The angle of the remaining part of reflector 1 is b, and b is the angle of reflector space, and the relation of the radian of reflector 1 said reflector space and the radian of index ellipsoid satisfies:
b+a＝360°，
Wherein, a is the radian of index ellipsoid, and b is the radian of reflector space, and a and b are positive nonzero number.
The radian b of reflector space and the radian a of index ellipsoid can freely distribute according to demand, and wherein comparatively ideal proportioning is:
B: a=1: N, wherein N is 1～5 positive number.
When considering the light projector under the concrete condition, most source light all can project on the single side face through the refraction action of convex lens 2, so the proportioning of refracted portion should be greater than the reflecting part.Few when the refracted ray of demand and under the situation that reflection ray is many, the proportioning of refracted portion can therefore according to the illumination needs of reality, not got rid of the situation of the proportioning of index ellipsoid less than the reflecting part less than the reflecting part yet.Said convex lens 2 are the transparent luminescent material that goes out, and said to go out luminescent material be polymethyl methacrylate (PMMA) or Merlon (PC) or epoxy resin etc., and the material of reflector 1 is PC or acrylic material or glass etc.Source light should be as far as possible near the focal position of convex lens 2; Light can parallel being radiated on the single side face after through the focus of convex lens 2; Convex lens 2 can make the source light of part project on the single side face abreast through its refraction action; Reflection and refraction can take place during to the outside wall surface of reflector 1 in another part ray cast, at this moment can not reach the requirement that is radiated single side face through the light behind the refraction action, should avoid as far as possible; At this moment the total reflection through utilizing light or coat some reflectorized materials in the outside wall surface of reflector 1 and reduce refraction action increases reflective efficient.
With reference to Fig. 5 and Fig. 6; In one embodiment, said reflector 1 rim of a cup extension is provided with location-plate 4, and this location-plate 4 is parallel with the cup end of said reflector 1; Location-plate 4 provides the interface of installation on the one hand for said lens; Play a part fixing and support of lens body on the other hand, the peripheral edge portion of location-plate 4 can come to confirm as required, and for example the outward flange of location-plate 4 can be circular-arc or be the polyline shaped etc. of fillet.Said location-plate 4 is provided with two locating hole; Comprise first locating hole 5 and second locating hole 6; Said locating hole is the circular hole that connects or square hole etc.; The locating hole that is provided with on the location-plate 4 mainly plays a part and uses the external structure of this lenticular body fixing, and said first locating hole and second locating hole are symmetrically distributed, and be both beautiful and practical.The breach of said reflector 1 faces the purpose zone of ray cast, and promptly single side face adopts this set can make the most of light direct projection that reflects on single side face, can further increase illumination intensity of light source.
Referring to Fig. 7, the operation principle of the utility model is described with a preferred embodiment below:
Light be radiated with the mode of scattering from light source hole on the outside wall surface of reflector with convex lens in.When on the inner concave of light radiation at convex lens; Light reflects for the first time; Its refraction should be satisfied: sin θ 1: sin θ 2=n2: n1, and wherein θ 1 is the incidence angle of inner concave glazed thread, θ 2 is refraction angles of inner concave glazed thread; N2 is the refractive index of convex lens, and n1 is the refractive index of air.
A part of light behind superrefraction can be radiated the outside wall surface of convex lens.Outside wall surface is the interface of optically denser medium and optically thinner medium; Light gets into optically thinner medium from optically denser medium, and refraction action can take place; The light that refraction takes place so for the first time can experience refraction for the second time; Refraction also should be satisfied the law of refraction, can be radiated on the purpose screen 7 (the purpose screen is the single side face of a simplification) through the light after twice refraction.If can not be radiated on the purpose screen 7, then can accomplish purpose through the curvature and the refractive index that change the convex lens outside wall surface;
Another part light radiation behind superrefraction is to the outside wall surface of reflector.Outside wall surface equally also is the interface of optically denser medium and optically thinner medium; Light gets into optically thinner medium and satisfies incidence angle (incidence angle is the angle of incident ray and reflector wall of cup tangent plane normal) more than or equal to critical angle (critical angle is the angle of the angle of incidence of light when instigating the refraction angle to reach 90 °) from optically denser medium; As shown in Figure 8, when the incidence angle of light increases to some numerical value, the refraction angle is increased gradually; When the refraction angle increases to 90 °; Incidence angle is in the critical angle state, and at this moment incident ray 8 will satisfy the total reflection law on interface, and the outside wall surface of reflector satisfies the condition that makes source light generation total reflection; The light that incides the reflector outside wall surface is sent out and will be given birth to the total reflection effect; Form total reflection light 9, the light after the process total reflection effect of the cup end of reflector can not be radiated in the convex lens, shields from the areas diffract between reflector and the convex lens to purpose.
Also can be that the light radiation of another part behind superrefraction is to the outside wall surface of reflector.Outside wall surface equally also is the interface of optically denser medium and optically thinner medium, and light gets into optically thinner medium from optically denser medium, and refraction action can take place.Because the outside wall surface of reflector scribbles some reflective materials; The reflectorized material that is coated with can increase the ability of outside wall surface reflection ray; Minimizing helps the reflex of stray light because of the outside wall surface generation refraction action of irradiate light to reflector, can further improve the utilization rate of light.So light is reflected away at an angle, a part of reflection ray can directly be injected on the purpose screen, and the light of another part can reflex to convex lens, through injecting behind the outside wall surface generation refraction action of convex lens on the purpose screen.
The above is merely the embodiment of the utility model; Be not thus the restriction the utility model claim; Every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the utility model.
Claims (8)
1. a directed luminous lens is characterized in that, comprises reflector, convex lens; The cup end that said convex lens are arranged on reflector, be connected with reflector; The rim of a cup of the outside wall surface orientating reflex cup of said convex lens, the cup end of the internal face of said convex lens and reflector, surround the light source hole that is used to place light source, and being shaped as of said reflector is horn-like; Its side is provided with breach, and said breach faces the purpose zone of ray cast.
2. directed luminous lens according to claim 1 is characterized in that, the material of said reflector and the radian of its outside wall surface satisfy the condition of light generation total reflection.
3. directed luminous lens according to claim 1 is characterized in that the outside wall surface of said reflector is coated with one deck reflectorized material.
4. according to each described directed luminous lens in the claim 1 to 3; It is characterized in that; Said breach is the center for the central shaft with the rim of a cup of reflector, the rotation part of outwards cutting radially, and the arc angle of said breach projection on cross section is 60 °～300 °.
5. directed luminous lens according to claim 4 is characterized in that, the material of said convex lens is polymethyl methacrylate or Merlon.
6. directed luminous lens according to claim 5 is characterized in that, said reflector material be PC or acrylic.
7. directed luminous lens according to claim 6 is characterized in that, said reflector rim of a cup extension is provided with location-plate, and said location-plate is with parallel at the bottom of the reflector cup.
8. directed luminous lens according to claim 7 is characterized in that said location-plate is provided with locating hole, and said locating hole is a through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202878205U CN202209634U (en) | 2011-08-09 | 2011-08-09 | Lens capable of transmitting light in fixed direction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202878205U CN202209634U (en) | 2011-08-09 | 2011-08-09 | Lens capable of transmitting light in fixed direction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202209634U true CN202209634U (en) | 2012-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202878205U Expired - Fee Related CN202209634U (en) | 2011-08-09 | 2011-08-09 | Lens capable of transmitting light in fixed direction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202209634U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672729A (en) * | 2012-09-13 | 2014-03-26 | 林万炯 | Lens, LED module and lighting system using LED module |
-
2011
- 2011-08-09 CN CN2011202878205U patent/CN202209634U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672729A (en) * | 2012-09-13 | 2014-03-26 | 林万炯 | Lens, LED module and lighting system using LED module |
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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: 20120502 Termination date: 20120809 |