Screen for image display apparatus, method for manufacturing screen for image display apparatus, and image display apparatus
AssigneeSony Corporation
InventorsShinjiro Umeya, Yoshinori Tanaka
Life of this patent
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Abstract
A screen for image display apparatus according to the present invention has a base member, a light absorption layer formed on the base member and adapted for absorbing light of a visible light range, and a light control layer formed on the light absorption layer. The light control layer reflects projected image display light to form an image and has a reflection wavelength selection function of selectively reflecting light of the wavelength range of the image display light. By using the screen for image display apparatus according to the present invention, a user can easily enjoy large-screen image display even in a bright environment.
Claims45
A screen for image display apparatus comprising:
- a base member;
- a light absorption layer formed on the base member and adapted for absorbing light of a wavelength range covering substantially an entire visible light range;
- and
- a light control layer formed on the light absorption layer;
- the light control layer having a diffuse image forming function of causing diffuse reflection of image display light projected via projection image forming means and thus forming an image, and a reflection wavelength selection function of selectively reflecting light of the wavelength range of the image display light and transmitting light of the other wavelength ranges.
A method for manufacturing a screen for image display apparatus, the method comprising forming a reflective holographic screen using light beams of primary colors that decide a color reproducing wavelength in an image projector, as object light and reference light, thus providing a reflection wavelength characteristic corresponding to the color reproducing wavelength of the image projector.
A method for manufacturing a screen for image display apparatus, the method comprising applying a material prepared by mixing plural types of toner particles onto a projection surface, thus providing a reflection wavelength characteristic corresponding to a color reproducing wavelength of an image projector.
An image display apparatus comprising:
- a light source for emitting primary-color light of red, green and blue;
- a spatial light modulator for modulating the intensity of the light beam emitted from the light source in accordance with image information;
- projection image forming means for causing image formation on a screen, of the primary-color light with its intensity modulated by the spatial light modulator;
- and
- peripheral light generating means for illuminating the screen with peripheral light having a wavelength different from the wavelength of the primary-color light;
- wherein the screen has a higher reflectance for the primary-color light than for the peripheral light and a lower absorptivity for the primary-color light than for the peripheral light.
An image display apparatus comprising:
- a light source for emitting light of two colors of primary colors of red, green and blue, and an ultraviolet ray;
- a spatial light modulator for modulating the intensity of the light beam emitted from the light source in accordance with image information;
- projection image forming means for causing image formation on a screen, of the two-color light and the ultraviolet ray with their intensities modulated by the spatial light modulator;
- and
- peripheral light generating means for illuminating the screen with peripheral light having a wavelength different from the wavelengths of the two-color light and the ultraviolet ray;
- wherein the screen has a higher reflectance for the two-color light than for the peripheral light and a lower absorptivity for the two-color light than for the peripheral light, and the screen has a color conversion layer for converting the ultraviolet ray to light of the remaining one color of the primary colors.
Dependencies are inferred from the claim text.