CN212540917U - Lens device for light uniformization and light spot correction - Google Patents
Lens device for light uniformization and light spot correction Download PDFInfo
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- CN212540917U CN212540917U CN202021646195.4U CN202021646195U CN212540917U CN 212540917 U CN212540917 U CN 212540917U CN 202021646195 U CN202021646195 U CN 202021646195U CN 212540917 U CN212540917 U CN 212540917U
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Abstract
The utility model relates to a dodging and facula correcting lens device, which comprises a base and a correcting mechanism; one end of the base is provided with a light source mounting seat, and a light source is arranged on the light source mounting seat; the other end of the base is provided with a light machine mounting seat, and a light machine is arranged on the light machine mounting seat; the base is provided with an installation groove; the correcting mechanism comprises a light guide rod, a lens module and a diffusion sheet module; the light guide rod is placed in the mounting groove; the lens module comprises a first sleeve and a lens, the lens is sleeved in the first sleeve, and the first sleeve is fixed at one end, far away from the optical machine, of the light guide rod; the diffusion sheet module comprises a second sleeve and a diffusion sheet, and the diffusion sheet is sleeved in the second sleeve; the second sleeve is fixed on one end of the first sleeve, which is far away from the light guide rod. The utility model provides a pair of lens device is revised to even light and facula for the demand phase-match of light source light-emitting facula and ray apparatus, thereby reach and throw good picture.
Description
Technical Field
The utility model relates to a laser imaging technology field, concretely relates to dodging and facula correction lens device.
Background
The facula that Micro-Electro Mechanical System (Micro-electric Mechanical System) ray apparatus that adopts at present required light source provided is 0.5 mm's of maximum diameter facula, the light source is because red at present, green, blue three-colour laser mixes into white light, because semiconductor laser's characteristic, the facula is not of uniform size in major axis direction and minor axis direction, be oval facula, and because red, blue, green wavelength is different, the facula is not of uniform size in major axis direction and minor axis direction on its same distance and position, promptly: the laser red, green and blue light spots are elliptical and have different shapes and sizes at the same projection position.
Because the spot size of the current light source is larger than that of the light machine, and the spot sizes of red, green and blue light are different, the ineffective light larger than 0.5mm can cause radiation and diffraction to form color strips and different colors on the picture. If the abnormal condition on the picture needs to be eliminated, the output power of the light source must be reduced, the brightness of the abnormal area must be reduced, and the brightness of the synchronous light source must be sacrificed and reduced. Another method is to adjust the incident angle to reflect the color bars and different colors out of the image, which is not in the image area, and because of the angle problem, the brightness of one side of the image is reduced, the brightness of the whole image is not uniform, one side is dark, and the other side is bright.
In view of the above problems, it is desirable to provide a dodging and flare correcting lens device.
SUMMERY OF THE UTILITY MODEL
In order to achieve the above object of the present invention, the lens device for dodging and correcting light spot of the present invention comprises a base and a correcting mechanism;
a light source mounting seat is arranged at one end of the base, and a light source is arranged on the light source mounting seat; the other end of the base is provided with a light machine mounting seat, and a light machine is arranged on the light machine mounting seat; the base is provided with a mounting groove, one end of the mounting groove is over against the output end of the light source, and the other end of the mounting groove is over against the input end of the optical machine;
the correcting mechanism comprises a light guide rod, a lens module and a diffusion sheet module; the light guide rod is placed in the mounting groove, and one end of the light guide rod is opposite to the input end of the optical machine; the lens module comprises a first sleeve and a lens, the lens is sleeved in the first sleeve, and the first sleeve is fixed at one end, far away from the optical machine, of the light guide rod; the diffusion sheet module comprises a second sleeve and a diffusion sheet, and the diffusion sheet is sleeved in the second sleeve; the second sleeve is fixed at one end of the first sleeve, which is far away from the light guide rod, and one end of the second sleeve, which is far away from the light guide rod, is opposite to the output end of the light source;
and the mounting groove is provided with a plurality of fixing pieces for fixing the correcting mechanism in the mounting groove.
Preferably, a circle of lens sealing buffer ring is arranged at the edge position of the lens, and the lens is sleeved in the first sleeve through the lens sealing buffer ring.
Preferably, a diffusion sheet sealing buffer ring is arranged at the edge of the diffusion sheet, and the diffusion sheet is sleeved in the second sleeve through the diffusion sheet sealing buffer ring.
Preferably, the fixing piece is provided with a semicircular concave part, and the fixing piece is clamped on the side surface of the correcting mechanism through the semicircular concave part and is fixed on the base through a bolt.
Preferably, three positioning blocks are arranged on two sides of the inner wall of the semicircular concave part at equal intervals
The working principle is as follows: adopt optical system, utilize the combination of diffusion piece + aspherical lens, with the non-circular facula of light source light-emitting opening, the facula of plastic ray apparatus demand, the diffusion piece mainly plays the diffusion, enlargies, the effect of homogenization light source light-emitting beam facula, aspherical lens is used for the light beam after the contraction diffusion to make its facula converge, gets into in the passageway of leaded light stick to the facula demand with the ray apparatus demand matches.
The utility model relates to a lens device is revised to even light and facula, compared with the prior art, still has following advantage:
(1) the utility model discloses a scheme utilizes diffusion piece and aspheric lens's optical system, is used in the light path route that the light source transmitted the ray apparatus, has made the plastic to the big or small shape part of original light source output facula and ray apparatus demand facula, makes light source light-emitting facula and ray apparatus demand phase-match, thereby reaches the picture of throwing, and the picture is beautiful clean, improves the defect such as the uneven luminance of picture left and right sides, has higher picture expressive force;
(2) the RGB three-color light of the light source is homogenized by adopting a diffusion sheet, so that large-area circular spots are obtained;
(3) reducing the large-area circular surface formed by the diffusion sheet to a light beam required by the optical machine by using the aspheric lens;
(4) the light guide rod guides the light beam to the optical machine imaging surface to complete the matching of the optical machine and the light source.
Drawings
FIG. 1 is a schematic diagram illustrating an operation of a dodging and spot-correcting lens device according to the present embodiment;
FIG. 2 is a schematic structural diagram of a dodging and spot correcting lens device according to the present embodiment;
FIG. 3 is a schematic structural diagram of the base in the present embodiment;
fig. 4 is an exploded view of the correcting mechanism in the present embodiment;
FIG. 5 is a schematic structural view of the fixing member in this embodiment;
fig. 6 is a schematic diagram of a dodging and spot correcting lens device in this embodiment.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 5, in which the mark 5 is the light-emitting angle generated by the optical machine, a lens device for dodging and correcting light spots includes a base 1 and a correcting mechanism;
a light source mounting seat 2 is arranged at one end of the base 1, and a light source 8 is arranged on the light source mounting seat 2; the other end of the base 1 is provided with a light machine mounting seat 3, and a light machine 6 is arranged on the light machine mounting seat 3; the base 1 is provided with a mounting groove 11, one end of the mounting groove 11 is over against the output end of the light source 8, and the other end of the mounting groove 11 is over against the input end 12 of the optical machine 6;
the correcting mechanism comprises a light guide rod 7, a lens module and a diffusion sheet module; the light guide rod 7 is placed in the mounting groove 11, and one end of the light guide rod 7 is opposite to the input end 12 of the optical machine 6; the lens module comprises a first sleeve 9 and a lens 14, the lens 14 is sleeved in the first sleeve 9, and the first sleeve 9 is fixed at one end, far away from the optical machine 6, of the light guide rod 7; the diffusion sheet module comprises a second sleeve 10 and a diffusion sheet 16, and the diffusion sheet 16 is sleeved in the second sleeve 10; the second sleeve 10 is fixed at one end of the first sleeve 9 far away from the light guide rod 7, and one end of the second sleeve 10 far away from the light guide rod 7 is opposite to the output end of the light source 8;
the mounting groove 11 is provided with a plurality of fixing pieces 4 for fixing the correcting mechanism in the mounting groove 11.
The inventors herein need to describe the principle of the lower diffuser plate, which is also called diffuser plate, and mainly functions to provide a uniform surface light source for the display element. The substrate is made of a material having high light transmittance. Generally, in a conventional diffusion film, a particle of chemical particles is added to a diffusion film substrate as a scattering particle, and the particles of the diffusion plate are dispersed between finger layers, so that a thread passes through two media with different refractive indexes continuously when passing through the diffusion layer, and at the same time, the thread generates many refraction, reflection and scattering phenomena, thus resulting in an optical diffusion effect. The diffusion sheet has the working principle that a light source is atomized by means of refraction and reflection of a diffusion substance, and light is concentrated to the front face from small-angle emergent light so as to improve the front luminance.
The working principle is as follows: as shown in FIG. 6, the optical system of the diffusion sheet 16 and the lens 14 is used to act on the light path from the light source to the optical machine, and the original size and shape of the light spot output by the light source and the light spot required by the optical machine are shaped, so that the light spot output by the light source matches with the requirement of the optical machine, thereby achieving the purpose of projecting a good picture, making the picture beautiful and clean, improving the defects of uneven left and right brightness of the left and right sides of the picture, and the like, and having higher picture expression.
In this embodiment, in order to better fix the lens 14 in the first sleeve 9, a ring of lens sealing cushion ring 13 is provided at an edge position of the lens 14, and the lens 14 is sleeved in the first sleeve 9 through the lens sealing cushion ring 13.
Similarly, in order to better fix the diffusion sheet 16 in the second sleeve 10, a diffusion sheet sealing buffer ring 15 is arranged at an edge position of the diffusion sheet 16, and the diffusion sheet 16 is sleeved in the second sleeve 10 through the diffusion sheet sealing buffer ring 15.
In this embodiment, the fixing member 4 is provided with a semicircular concave portion 17, and the fixing member 4 is clamped on the side surface of the correction mechanism through the semicircular concave portion 17 and is fixed on the base 1 through a bolt. Preferably, three positioning blocks 18 are arranged on two sides of the inner wall of the semicircular concave part 17 at equal intervals, three-point fixing is adopted, large-area contact is avoided, and a mechanism is crushed and corrected. The ball number 19 is a schematic diagram of the shape of the light spot from the light source, which is not shown here, and is mainly used for understanding, and is a cross section (the shape is also a theoretical simulation) taken on a light propagation path, and the ball marker 20 is also the same and is mainly used for understanding.
In the description of the present specification, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of describing the technical solutions of the present patent and for simplification of the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be interpreted as limiting the present patent application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this patent application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this specification, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present specification can be understood by those of ordinary skill in the art as appropriate.
In this specification, unless explicitly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (5)
1. A dodging and facula correcting lens device is characterized by comprising a base and a correcting mechanism;
a light source mounting seat is arranged at one end of the base, and a light source is arranged on the light source mounting seat; the other end of the base is provided with a light machine mounting seat, and a light machine is arranged on the light machine mounting seat; the base is provided with a mounting groove, one end of the mounting groove is over against the output end of the light source, and the other end of the mounting groove is over against the input end of the optical machine;
the correcting mechanism comprises a light guide rod, a lens module and a diffusion sheet module; the light guide rod is placed in the mounting groove, and one end of the light guide rod is opposite to the input end of the optical machine; the lens module comprises a first sleeve and a lens, the lens is sleeved in the first sleeve, and the first sleeve is fixed at one end, far away from the optical machine, of the light guide rod; the diffusion sheet module comprises a second sleeve and a diffusion sheet, and the diffusion sheet is sleeved in the second sleeve; the second sleeve is fixed at one end of the first sleeve, which is far away from the light guide rod, and one end of the second sleeve, which is far away from the light guide rod, is opposite to the output end of the light source;
and the mounting groove is provided with a plurality of fixing pieces for fixing the correcting mechanism in the mounting groove.
2. The lens device of claim 1, wherein a lens sealing buffer ring is disposed at an edge position of the lens, and the lens is sleeved in the first sleeve through the lens sealing buffer ring.
3. The lens device for homogenizing and correcting spots according to any one of claims 1 to 2, wherein a diffuser sealing buffer ring is provided at an edge of the diffuser, and the diffuser is sleeved in the second sleeve through the diffuser sealing buffer ring.
4. The lens device for dodging and correcting a spot according to any one of claims 1 to 2, wherein the fixing member is provided with a semicircular recess, and the fixing member is clamped on a side surface of the correcting mechanism through the semicircular recess and is fixed on the base through a bolt.
5. The lens device as claimed in claim 4, wherein three positioning blocks are disposed on two sides of the inner wall of the semicircular recess at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021646195.4U CN212540917U (en) | 2020-08-10 | 2020-08-10 | Lens device for light uniformization and light spot correction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021646195.4U CN212540917U (en) | 2020-08-10 | 2020-08-10 | Lens device for light uniformization and light spot correction |
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| Publication Number | Publication Date |
|---|---|
| CN212540917U true CN212540917U (en) | 2021-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021646195.4U Active CN212540917U (en) | 2020-08-10 | 2020-08-10 | Lens device for light uniformization and light spot correction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114879437A (en) * | 2022-05-17 | 2022-08-09 | 深圳市火乐科技发展有限公司 | Light uniformizing device, projection optical machine and projection equipment |
-
2020
- 2020-08-10 CN CN202021646195.4U patent/CN212540917U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114879437A (en) * | 2022-05-17 | 2022-08-09 | 深圳市火乐科技发展有限公司 | Light uniformizing device, projection optical machine and projection equipment |
| CN114879437B (en) * | 2022-05-17 | 2023-07-25 | 深圳市火乐科技发展有限公司 | Dodging device, projection optical machine and projection equipment |
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