Speckle-removing laser television screen and preparation method thereof

A laser TV and screen technology, applied in TV, color TV, color TV parts, etc., can solve the problem of high speckle contrast, increase optical path difference, reduce speckle contrast, and reduce strong and weak interference Effect

Active Publication Date: 2022-06-24
NINGBO EXCITON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of high speckle contrast in existing laser TV display, the present invention provides a speckle-resolving laser TV screen and its preparation method

Method used

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  • Speckle-removing laser television screen and preparation method thereof
  • Speckle-removing laser television screen and preparation method thereof
  • Speckle-removing laser television screen and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-9

[0151]The present invention provides a speckle de-speckled laser TV screen. The screen includes a dimming layer, a prism layer, and a reflective layer in sequence from top to bottom. The dimming layer includes a structured resin layer and a polymer film in sequence from top to bottom. The structured resin layer includes a scattering and homogenizing valve and an upward homogenizing valve; the scattering and homogenizing valve includes a rectangular concave lens and a spindle-shaped concave lens, and the spindle-shaped concave lens is arranged on the concave surface of the rectangular concave lens; The light valve includes a semi-cylindrical lens and spherical particles, the spherical particles are distributed on the surface of the semi-cylindrical lens; the semi-cylindrical lenses are respectively arranged on both sides of the rectangular concave lens, and the semi-cylindrical lens forms a positive angle with the horizontal direction of the screen theta.

[0152] Please refer...

Embodiment 11-19

[0154] The present invention provides a speckle de-speckled laser television screen, which comprises a volume astigmatism layer, a prism layer and a reflective layer in order from top to bottom.

[0155] The bulk astigmatism layer includes a number of ellipsoids and a number of rectangular fiber divergent connecting units, two ends of the one rectangular fiber divergent connecting unit are respectively connected with two ellipsoids, and the long axis of the ellipsoid is where the broad side of the screen is located. The directions are parallel, and the included angle between the rectangular fiber divergent connection unit and the line in the direction of the broad side of the screen is α.

[0156] The bulk astigmatism layer is a hollow three-dimensional structure.

[0157] Further, the prism layer includes a plurality of prism strips (also referred to as prism columns, referred to as prisms for short), and the prism strips are arc-shaped Fresnel structures.

[0158] Please re...

Embodiment 21-29

[0160] The present invention provides a speckle-dissolving laser television screen, which comprises a light adjustment layer, a bulk astigmatism layer, a prism layer, a reflection layer and a reflection layer in order from top to bottom.

[0161] The light-adjusting layer is the light-adjusting layer described in Embodiments 1-9, and the volume astigmatism layer is the volume-scattering layer described in Embodiments 11-19.

[0162] Please refer to Table 3-1, Table 3-2, Table 3-3, Table 3-4 for the technical parameters, and Table 3-5 for the main performance test data.

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PUM

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Abstract

The invention relates to the field of laser televisions, in particular to a speckle-removing laser television screen and a preparation method thereof. In order to solve the problem that the speckle contrast ratio is high during display of an existing laser television, the invention provides the speckle-removing laser television screen and the preparation method thereof. The screen sequentially comprises a dimming layer, a prism layer and a reflecting layer from top to bottom, and the dimming layer comprises a scattering dodging valve and an upward dodging valve; the upward dodging valves are arranged on the two sides of the scattering dodging valve respectively, and a forward included angle theta is formed between each upward dodging valve and the horizontal direction of the screen. According to the laser television screen provided by the invention, the speckle contrast ratios of R, G and B colors can be reduced to be below 4%.

Description

technical field [0001] The invention relates to the field of laser television, in particular to a laser television screen, in particular to a speckle-dissolving laser television screen and a preparation method thereof. Background technique [0002] Laser TV is a projection display device that uses a laser as a display light source, is equipped with a special optical screen and audio equipment, and can receive radio TV programs or Internet TV programs. [0003] The laser has high intensity, which can meet the needs of high-brightness display systems. The laser has excellent directivity and can achieve high resolution in scanning display systems. The laser spectrum is line spectrum, and the color resolution is high. , the color saturation is high. The laser light source has three characteristics of high brightness, good directionality and good monochromaticity, which is the basis for realizing high-fidelity image reproduction. [0004] However, due to the high coherence prop...

Claims

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Application Information

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IPC IPC(8): G03B21/602G03B21/60G02B5/02G02B5/04G02B27/48H04N5/64
CPCG03B21/602G03B21/60G02B5/0242G02B5/045G02B27/48H04N5/64G02B5/02G02B5/04
Inventor 李刚张毅夏寅薛永富陈建文唐海江张彦
Owner NINGBO EXCITON TECH
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