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US 11,231,644 B2Granted
Fresnel projection screen and projection system
AssigneeHisense Laser Display Co., Ltd
InventorsWei Xiao, Chao Wang, Fei Zhao, Qiang Zhong, Xiaoping Li
Life of this patent
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Abstract
A Fresnel projection screen includes: a Fresnel layer; a first micro-structure layer disposed at a light incident side of the Fresnel layer, the first micro-structure layer including a plurality of micro-structures that are configured to diffusely reflect a portion of light incident thereon and refract another portion of the light; and a reflective layer disposed on a side of the Fresnel layer away from the first micro-structure layer.
Claims14
A Fresnel projection screen, comprising:
- a Fresnel layer;
- a first micro-structure layer disposed at a light incident side of the Fresnel layer, the first micro-structure layer including a plurality of first micro-structures that are configured to diffusely reflect a portion of light incident thereon and refract another portion of the light;
- a reflective layer disposed on a side of the Fresnel layer away from the first micro-structure layer;
- and
- a second micro-structure layer disposed on a surface of the first micro-structure layer, wherein
- the second micro-structure layer includes a plurality of second micro-structures,
- the second micro-structure layer is an outermost layer of the Fresnel projection screen,
- the plurality of second micro-structures completely cover the first micro-structure layer,
- the plurality of first micro-structures have a same shape, a same width, a same length and a same thickness,
- shapes, widths, lengths and thicknesses of the plurality of second micro-structures are random, and
- a width, a length and a thickness of each first micro-structure are greater than a width, a length and a thickness of each second micro-structure, respectively.
8 more elements
A Fresnel projection screen, comprising:
- a Fresnel layer;
- a first micro-structure layer disposed at a light incident side of the Fresnel layer, the first micro-structure layer including a plurality of first micro-structures that are configured to diffusely reflect a portion of light incident thereon and refract another portion of the light;
- a reflective layer disposed on a side of the Fresnel layer away from the first micro-structure layer;
- and
- a second micro-structure layer disposed on a surface of the first micro-structure layer, wherein
- the second micro-structure layer includes a plurality of second micro-structures;
- the plurality of first micro-structures and the plurality of second micro-structures are projections extending along a horizontal direction of the Fresnel projection screen;
- the plurality of first micro-structures and the plurality of second micro-structures are staggered in a vertical direction of the Fresnel projection screen.
5 more elements
A Fresnel projection screen, comprising:
- a Fresnel layer;
- a first micro-structure layer disposed at a light incident side of the Fresnel layer, the first micro-structure layer including a plurality of first micro-structures that are configured to diffusely reflect a portion of light incident thereon and refract another portion of the light;
- a reflective layer disposed on a side of the Fresnel layer away from the first micro-structure layer;
- a second micro-structure layer disposed on a surface of the first micro-structure layer and disposed between the first micro-structure layer and the Fresnel layer;
- and
- a first support layer disposed on a surface of the second micro-structure layer proximate to the Fresnel layer, wherein
- the second micro-structure layer includes a plurality of second micro-structures;
- the plurality of first micro-structures and the plurality of second micro-structures are projections extending along a horizontal direction of the Fresnel projection screen;
- and
- the first support layer is configured to support the second micro-structure layer and the first micro-structure layer.
7 more elements
Dependencies are inferred from the claim text.