Reflective liquid crystal projector and image reproduction apparatus
First Claim
1. A reflective liquid crystal projector, comprising:
- a light source section having first, second and third lasers, each of which is formed from a semiconductor laser or a solid-state laser, and configured to emit laser light beams of red, green and blue, respectively;
a reflective liquid crystal panel including a liquid crystal layer formed between an incoming and outgoing side substrate and a reflection side substrate and forming pixels for red, green and blue, a microlens array formed on said incoming and outgoing side substrate and comprised of a plurality of microlenses, and reflecting layers formed corresponding to the pixels on said reflection side substrate;
a light beam diffusing and shaping optical device configured to diffuse and shape the laser light beams emitted from said light source section by diffraction or refraction of light such that the laser light beams are introduced to the corresponding pixels of said liquid crystal layer over all of an area of a display region of said reflective liquid crystal panel;
a lens system configured to convert the laser light beams of the colors diffused and shaped by said light beam diffusing and shaping optical device into beams of substantially parallel light;
an optical device configured to transmit or reflect the laser light beams of the colors converted into the beams of substantially parallel light by said lens system so as to introduce the laser light beams of the colors from said incoming and outgoing side substrate to said reflective liquid crystal panel and further introduce the laser light beams of the colors to said liquid crystal layer through said microlenses; and
a projection lens configured to project the image light beams of the colors after (i) being transmitted through said liquid crystal layer, (ii) being reflected by said reflecting layers, (iii) being transmitted through said liquid crystal layer again, (iv) emerging from said incoming and outgoing side substrate through said microlenses and (v) being reflected by said optical device or transmitted through said optical device.
1 Assignment
0 Petitions
Accused Products
Abstract
Laser light beams are diffused and shaped by diffractive optical devices such that they are introduced to corresponding pixels of a liquid crystal layer over an entire area of a display region of a reflective liquid crystal panel. The diffused and shaped laser light beams are introduced to the reflective liquid crystal panel through a field lens and a polarizing beam splitter. Red, green and blue pixels are formed on the reflective liquid crystal panel, and a microlens array is formed on an incoming and outgoing side substrate while reflecting layers corresponding to the pixels are formed on a reflection side substrate. The laser light fluxes of the colors are distributed and condensed by the microlenses and introduced to the corresponding pixels and then reflected by the corresponding reflecting layers. Refractive optical devices may be used in place of the diffractive optical devices.
16 Citations
5 Claims
-
1. A reflective liquid crystal projector, comprising:
-
a light source section having first, second and third lasers, each of which is formed from a semiconductor laser or a solid-state laser, and configured to emit laser light beams of red, green and blue, respectively; a reflective liquid crystal panel including a liquid crystal layer formed between an incoming and outgoing side substrate and a reflection side substrate and forming pixels for red, green and blue, a microlens array formed on said incoming and outgoing side substrate and comprised of a plurality of microlenses, and reflecting layers formed corresponding to the pixels on said reflection side substrate; a light beam diffusing and shaping optical device configured to diffuse and shape the laser light beams emitted from said light source section by diffraction or refraction of light such that the laser light beams are introduced to the corresponding pixels of said liquid crystal layer over all of an area of a display region of said reflective liquid crystal panel; a lens system configured to convert the laser light beams of the colors diffused and shaped by said light beam diffusing and shaping optical device into beams of substantially parallel light; an optical device configured to transmit or reflect the laser light beams of the colors converted into the beams of substantially parallel light by said lens system so as to introduce the laser light beams of the colors from said incoming and outgoing side substrate to said reflective liquid crystal panel and further introduce the laser light beams of the colors to said liquid crystal layer through said microlenses; and a projection lens configured to project the image light beams of the colors after (i) being transmitted through said liquid crystal layer, (ii) being reflected by said reflecting layers, (iii) being transmitted through said liquid crystal layer again, (iv) emerging from said incoming and outgoing side substrate through said microlenses and (v) being reflected by said optical device or transmitted through said optical device. - View Dependent Claims (2, 3, 4)
-
-
5. A reflective liquid crystal projector, comprising:
-
first, second and third lasers, each of which is formed from a semiconductor laser or a solid-state laser and configured to emit laser light beams of a first color, a second color and a third color, respectively, from among red, green and blue; a first reflective liquid crystal panel including a liquid crystal layer formed between an incoming and outgoing side substrate and a reflection side substrate and forming pixels of a first color and reflecting layers formed corresponding to the pixels on said reflection side substrate; a second reflective liquid crystal panel including a liquid crystal layer formed between an incoming and outgoing side substrate and a reflection side substrate and forming pixels of a second color and pixels of a third color, a microlens array formed on said incoming and outgoing side substrate and comprised of a plurality of microlenses, and reflecting layers formed corresponding to the pixels on said reflection side substrate; a light beam diffusing and shaping optical device configured to diffuse and shape the laser light beams of the first color, second color and third color emitted from said first, second and third lasers by diffraction or refraction of the light such that the laser light beam of the first color is introduced to all of an area of a display region of said first reflective liquid crystal panel and the laser light beams of the second color and the third color are introduced to the corresponding pixels of said liquid crystal layer of said second reflective liquid crystal panel over all of an area of a display region of said second reflective liquid crystal panel; a lens system configured to convert the laser light beams of the first color, second color and third color diffused and shaped by said light beam diffusing and shaping optical device into beams of substantially parallel light; an optical device configured to transmit or reflect the laser light beam of the first color converted into the beam of substantially parallel light by said lens system so as to be introduced to said liquid crystal layer of said first reflective liquid crystal panel and reflect or transmit the laser light beams of the second color and third color converted into the beams of substantially parallel light by said lens system so as to be introduced to said liquid crystal layer of said second reflective liquid crystal panel; and a projection lens configured to project (a) the image light of the first color in said first reflective liquid crystal panel after (i) being transmitted through said liquid crystal layer, (ii) being reflected by said reflecting layer, (iii) being transmitted through said liquid crystal layer again, (iv) emerging from said incoming and outgoing side substrate, and (v) being reflected by said optical device or transmitted through said optical device and (b) the image light of the second color and the third color in said second reflective liquid crystal panel after (i) being transmitted through said liquid crystal layer, (ii) being reflected by said reflecting layer, (iii) being transmitted through said liquid crystal layer again, (iv) emerging from said incoming and outgoing side substrate through said microlenses, and (v) being transmitted through said optical device or reflected by said optical device.
-
Specification