CN112904660A - High-gain wide-viewing-angle ultra-short-focus laser projection screen structure - Google Patents
High-gain wide-viewing-angle ultra-short-focus laser projection screen structure Download PDFInfo
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- CN112904660A CN112904660A CN202110137592.1A CN202110137592A CN112904660A CN 112904660 A CN112904660 A CN 112904660A CN 202110137592 A CN202110137592 A CN 202110137592A CN 112904660 A CN112904660 A CN 112904660A
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- 239000010410 layer Substances 0.000 abstract description 14
- 238000004381 surface treatment Methods 0.000 abstract description 8
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- 239000004033 plastic Substances 0.000 description 4
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Images
Classifications
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- 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
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention discloses a high-gain wide-view angle ultrashort-focus laser projection screen structure which comprises a substrate, an optical structural part and a support part, wherein the optical structural part is arranged between the substrate and the support part, one surface of the substrate, which is far away from the optical structural part, is processed into a surface processing surface, the cross section of the optical structural part is in a sawtooth shape, and the saw teeth of the optical structural part are designed to be normally distributed on the whole; the optical structure comprises a bottom edge, a first bevel edge and a second bevel edge, wherein the first bevel edge and the second bevel edge form sawteeth, the bottom edge is attached to the surface of the base material, the first bevel edge extends along the direction vertical to the bottom edge, the first bevel edge is processed to form a black coating of the optical structure, and the second bevel edge is processed to form a reflecting layer of the optical structure. The structure of the invention can reduce and thin the base material, and carry out surface treatment on the base material, reduce functional layers and improve the utilization rate of light energy.
Description
Technical Field
The invention relates to the technical field of projection, in particular to a high-gain wide-viewing-angle ultra-short-focus laser projection screen structure.
Background
With the vigorous development of the household appliance industry, the spirit level of people is improved, and the common liquid crystal television can not meet the requirements of people; the ultra-short-focus laser television with the ultra-large size, the triple eye protection and the high color gamut is favored by people. The ultra-large screen as an important component of the ultra-short-focus laser television becomes the focus of research and development of technicians at home and abroad, and the light-resistant screens suitable for the laser television at home and abroad are mainly Fresnel screens and black grid screens at present; the Fresnel screen is mainly high in gain and contrast, but is influenced by an optical structure and has a narrow viewing angle; the black grid has low gain due to the influence of an optical structure, but the viewing angle is wide; therefore, the two types of screens have not been able to satisfy the demand of people for high brightness and wide viewing angle.
Disclosure of Invention
The invention aims to overcome the defects in the background technology and provide a high-gain wide-viewing-angle ultra-short-focus laser projection screen structure, which changes the distribution of an optical structure, reduces the thickness and the number of functional layers, improves the screen gain and increases the left and right viewing angles of a screen according to the optical design and the law of energy conservation.
In order to achieve the technical effects, the invention adopts the following technical scheme:
a high-gain wide-view angle ultra-short-focus laser projection screen structure comprises a substrate, an optical structural member and a support member, wherein the optical structural member is arranged between the substrate and the support member, one surface of the substrate, which is far away from the optical structural member, is processed into a surface processing surface, the cross section of the optical structural member is in a sawtooth shape, and the saw teeth of the optical structural member are designed to be normally distributed on the whole;
the optical structure comprises a bottom edge, a first bevel edge and a second bevel edge, wherein the first bevel edge and the second bevel edge form sawteeth, the bottom edge is attached to the surface of a base material, the first bevel edge extends along the direction vertical to the bottom edge, the first bevel edge is processed to form a blackened layer of the optical structure, the blackened layer is used for absorbing three-side ambient light, each first bevel edge can be subjected to blackened treatment in a spraying mode, and the second bevel edge is processed to form a reflecting layer of the optical structure; the incident light penetrates through the substrate and the optical structural member to the reflecting layer and is reflected out of the screen, in the scheme, the screen display structure is made into a structure similar to a normal part while the image picture quality is ensured, the reduction and thinning of the substrate are facilitated, meanwhile, the surface treatment is carried out on the substrate, the functional layer can be reduced, and the light energy utilization rate is improved.
Furthermore, the included angle formed by the first bevel edge and the second bevel edge is sequentially enlarged from top to bottom, and light rays can be oriented to be parallel or approximately parallel to enter human eyes in a reflecting mode.
Further, the surface treatment surface of the base material is treated by electron beam sputtering or sanding treatment, the surface treatment surface of the base material changes the surface roughness of the base material, the thickness of the surface treatment surface is in the range of 10 nanometers to 100 nanometers, and the surface treatment surface can be treated by electron beam sputtering or sanding treatment, preferably sanding treatment.
Further, the thickness of the substrate is 0.05 mm to 0.5 mm, and the substrate is made of high-transmittance polymer material, such as PC, PET, PMMA, etc., preferably 0.15 mm PET.
Furthermore, the optical structural component is made of a high-transparency high-polymer colloid mixed coloring diffusion filling material, so that the optical energy loss is favorably reduced, the brightness gain of a laser screen is increased, and the optical structural component can be prepared on a substrate by utilizing a mold after uniformly mixing the diffusing optical material, the coloring optical material and the high-polymer material for preparing the optical structural component when the optical structural component is specifically manufactured.
Further, the width of the bottom edge in the sawtooth structure of the optical structural member is 0.05 mm to 0.15 mm.
Further, the reflecting layer is made of a high-reflectivity metal material or metal oxide through vacuum coating or magnetron sputtering on the second bevel edge, and the thickness of the reflecting layer is 0.01 micrometer to 0.06 millimeter, wherein the material can be aluminum, silver, copper or composite titanium oxide, and preferably metal silver.
Further, the support member is made of a rigid plate material such as an iron-plastic plate, an aluminum-plastic plate, or the like, or a flexible material with a high elastic modulus, and the support member mainly fixes the whole projection screen structure.
Further, the supporting member is bonded and fixed with the optical structural member by a bonding material, the bonding material is an organic polymer colloid, and the bonding material can be a high-viscosity adhesive tape or glue, such as an acrylic acid series adhesive tape and a pressure-sensitive series glue, and preferably the pressure-sensitive series glue.
Further, the thickness of the high-gain wide-viewing angle ultrashort-focus laser projection screen structure is 0.2 mm to 1 mm.
Compared with the prior art, the invention has the following beneficial effects:
the high-gain wide-viewing angle ultrashort-focus laser projection screen structure can ensure the quality of image pictures, simultaneously can make the screen display structure into a structure similar to a normal part, can reduce and thin the substrate, can perform surface treatment on the substrate, reduces the functional layers, improves the light energy utilization rate, and can meet the requirements of people on high brightness and wide viewing angle.
Drawings
Fig. 1 is a schematic cross-sectional view of the ultra-short-focus laser projection screen structure of the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is a partial schematic view of an optical structure of the ultra-short-focus laser projection screen structure of the present invention.
Reference numerals: 1-substrate, 2-optical structure, 3-support, 4-adhesive material, 11-surface treatment surface, 21-bottom edge, 22-black coating, 23-reflecting layer and 100-laser projector.
Detailed Description
The invention will be further elucidated and described with reference to the embodiments of the invention described hereinafter.
Example (b):
the first embodiment is as follows:
as shown in fig. 1 and fig. 2, a high-gain wide-viewing angle ultra-short focus laser projection screen structure comprises a substrate 1, an optical structure 2 and a support 3, wherein the optical structure 2 is disposed between the substrate 1 and the support 3, one surface of the substrate 1 away from the optical structure 2 is processed into a surface processing surface 11, the cross-sectional shape of the optical structure 2 is zigzag, and the saw teeth of the optical structure 2 are normally distributed,as shown in FIG. 3, in the present embodiment, the optical format 2 satisfies the normal distribution design
And the function of three-side anti-light high-brightness wide visual angle is realized by keeping mu unchanged and changing the value of sigma, specifically, the value of sigma is gradually reduced from bottom to top while mu is unchanged, and the value range of sigma is 1-10.
Specifically, the optical structure 2 of the embodiment includes a bottom edge 21, and a first oblique edge and a second oblique edge which form a sawtooth, wherein the bottom edge 21 is attached to the surface of the substrate 1, the first oblique edge extends along a direction perpendicular to the bottom edge 21, the first oblique edge is processed to form a blackened layer 22 of the optical structure 2, the blackened layer 22 is used for absorbing ambient light from three sides, each first oblique edge can be subjected to blackened treatment in a spraying manner, and the second oblique edge is processed to form a reflection layer 23 of the optical structure 2; the incident light from the laser projector 100 passes through the substrate 1, the optical structure 2 and the reflective layer 23 and is reflected out of the screen into the human sight.
The reflecting layer 23 is made of a high-reflectivity metal material or metal oxide through vacuum coating or magnetron sputtering on the second bevel edge, and the thickness of the reflecting layer 23 is 0.01 micrometer to 0.06 millimeter, wherein the material can be aluminum, silver, copper or composite titanium oxide, and preferably metal silver.
Specifically, in this embodiment, the included angle θ formed by the first oblique edge and the second oblique edge is gradually increased from top to bottom, so that the light can be directed to be parallel or reflected approximately parallel to enter the human eye.
In this embodiment, the surface-treated surface 11 of the base material 1 is treated by electron beam sputtering or sanding, and the surface-treated surface 11 of the base material 1 is formed by changing the surface roughness of the base material 1 to have a thickness in the range of 10 nm to 100 nm, and is preferably treated by electron beam sputtering or sanding, preferably sanding.
The substrate 1 has a thickness of 0.05 mm to 0.5 mm and is made of a high-transmittance polymer material, such as PC, PET, PMMA, etc., preferably 0.15 mm PET.
In this embodiment, the optical structure 2 is made of a high-transparency polymer colloid mixed with a coloring and diffusing filler, which is beneficial to reducing light energy loss and increasing the brightness gain of the laser screen, and specifically, when the optical structure 2 is manufactured, the diffusing optical material, the coloring optical material and the polymer material for preparing the optical structure 2 can be uniformly mixed, and then the optical structure 2 is manufactured on the substrate 1 by using a mold, for example, a roller mold can be used for manufacturing, and the coloring and diffusing filler can be two organic polymer materials or a mixture of a plurality of organic polymer materials.
Specifically, in the present embodiment, the width D of the bottom edge 21 in one zigzag structure of the optical structural member 2 is 0.05 mm to 0.15 mm.
Specifically, the support 3 is made of a rigid plate material such as an iron-plastic plate, an aluminum-plastic plate, or the like, or a flexible material with a high elastic modulus, and the support 3 mainly plays a role in fixing the whole projection screen structure.
In this embodiment, the supporting member 3 is adhered and fixed to the optical structural member 2 by an adhesive material 4, and the adhesive material 4 is an organic polymer colloid, which may be a high-viscosity adhesive tape or glue, such as an acrylic adhesive tape or a pressure-sensitive glue, and preferably a pressure-sensitive glue.
Through the above structural design, the thickness of the high-gain wide-viewing angle ultrashort-focus laser projection screen structure of the embodiment can be realized between 0.2 mm and 1 mm.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A high-gain wide-view angle ultra-short-focus laser projection screen structure is characterized by comprising a substrate, an optical structural member and a support member, wherein the optical structural member is arranged between the substrate and the support member, one surface of the substrate, which is far away from the optical structural member, is processed into a surface processing surface, the cross section of the optical structural member is in a sawtooth shape, and the saw teeth of the optical structural member are designed to be normally distributed on the whole;
the optical structure comprises a bottom edge, a first bevel edge and a second bevel edge, wherein the first bevel edge and the second bevel edge form sawteeth, the bottom edge is attached to the surface of the base material, the first bevel edge extends along the direction vertical to the bottom edge, the first bevel edge is processed to form a black coating of the optical structure, and the second bevel edge is processed to form a reflecting layer of the optical structure.
2. The projection screen structure of claim 1, wherein the angle between the first inclined edge and the second inclined edge increases from top to bottom.
3. The projection screen structure of claim 1, wherein the surface of the substrate is treated by electron beam sputtering or frosting.
4. The projection screen structure of claim 1, wherein the substrate has a thickness of 0.05 mm to 0.5 mm and is made of a high-transmittance polymer material.
5. The projection screen structure of claim 1, wherein the optical structure is made of a high transparent polymer colloid mixed with a coloring and diffusing filler.
6. The projection screen structure of claim 1, wherein the width of the bottom side of the sawtooth structure of the optical structure is 0.05 mm to 0.15 mm.
7. The projection screen structure of claim 1, wherein the reflective layer is made of a high-reflectivity metal material or metal oxide by vacuum coating or magnetron sputtering on the second bevel edge, and the thickness of the reflective layer is 0.01 μm to 0.06 mm.
8. The projection screen structure of claim 1, wherein the support is made of a rigid plate or a flexible material with high elastic modulus.
9. The projection screen structure of claim 1, wherein the support member is fixed to the optical structure member by bonding material.
10. The projection screen structure of claim 1, wherein the projection screen structure has a thickness of 0.2 mm to 1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110137592.1A CN112904660A (en) | 2021-02-01 | 2021-02-01 | High-gain wide-viewing-angle ultra-short-focus laser projection screen structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110137592.1A CN112904660A (en) | 2021-02-01 | 2021-02-01 | High-gain wide-viewing-angle ultra-short-focus laser projection screen structure |
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| CN202110137592.1A Pending CN112904660A (en) | 2021-02-01 | 2021-02-01 | High-gain wide-viewing-angle ultra-short-focus laser projection screen structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115598914A (en) * | 2022-10-19 | 2023-01-13 | 四川长虹电器股份有限公司（Cn） | Fresnel optical screen with high gain and low speckle contrast and preparation method thereof |
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Application publication date: 20210604 |