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US 2001/0019240 A1Published application
Display apparatus
AssigneeFuji Photo Film Co., Ltd.
InventorKenji Takahashi
Life of this patent
Estimating the term…
Abstract
A display apparatus has a light source unit for generating excitation light, an optical element for modulating the excitation light generated by the light source unit for each of pixels in a two-dimensional plane, and a fluorescent screen for receiving the excitation light modulated by the optical element at a first surface and emitting visible light from a second surface opposite to the first surface. The fluorescent screen includes a layer of phosphor having an absorption coefficient of 1×102 cm−1 or more for the excitation light.
Claims20
A display apparatus comprising:
- a light source unit for generating excitation light having a predetermined wavelength;
- an optical element for modulating the excitation light generated by the light source unit for each of pixels in a two-dimensional plane;
- and
- a fluorescent screen for receiving the excitation light modulated by the optical element at a first surface and emitting visible light from a second surface opposite to the first surface, said fluorescent screen including a layer of phosphor having an absorption coefficient not smaller than 1×102 cm−1for the excitation light.
1 more element
A display apparatus comprising:
- a light source unit for generating excitation light having a predetermined wavelength;
- an optical element for modulating the excitation light generated by the light source unit for each of pixels in a two-dimensional plane;
- and
- a fluorescent screen for receiving the excitation light modulated by the optical element at a first surface and emitting visible light from a second surface opposite to the first surface, said fluorescent screen including a layer of phosphor in which a thickness of said layer of phosphor that gives a maximum brightness caused by the excitation light is not larger than 120 μm.
1 more element
A display apparatus comprising:
- a light source unit for generating excitation light having a predetermined wavelength;
- an optical element for modulating the excitation light generated by the light source unit for each of pixels in a two-dimensional plane;
- and
- a fluorescent screen for receiving the excitation light modulated by the optical element at a first surface and emitting visible light from a second surface opposite to the first surface, said fluorescent screen including a layer of phosphor in which a product of an absorption coefficient for the excitation light and a thickness of said layer of phosphor is within a range from 1 to 8.
1 more element
A display apparatus comprising:
- a light source unit for generating excitation light having a predetermined wavelength;
- an optical element for modulating the excitation light generated by the light source unit for each of pixels in a two-dimensional plane;
- a projection lens to project the excitation light modulated by the optical element;
- and
- a fluorescent screen for receiving the excitation light projected by the projection lens at a first surface and emitting visible light from a second surface opposite to the first surface, said fluorescent screen including a layer of phosphor having an absorption coefficient not smaller than 1×102 cm−1 for the excitation light.
2 more elements
A display apparatus comprising:
- a light source unit for generating excitation light having a predetermined wavelength;
- an optical element for modulating the excitation light generated by the light source unit for each of pixels in a two-dimensional plane;
- a projection lens to project the excitation light modulated by the optical element;
- and
- a fluorescent screen for receiving the excitation light projected by the projection lens at a first surface and emitting visible light from a second surface opposite to the first surface, said fluorescent screen including a layer of phosphor in which a thickness of said layer of phosphor that gives a maximum brightness caused by the excitation light is not larger than 120 μm.
2 more elements
A display apparatus comprising:
- a light source unit for generating excitation light having a predetermined wavelength;
- an optical element for modulating the excitation light generated by the light source unit for each of pixels in a two-dimensional plane;
- a projection lens to project the excitation light modulated by the optical element;
- and
- a fluorescent screen for receiving the excitation light projected by the projection lens at a first surface and emitting visible light from a second surface opposite to the first surface, said fluorescent screen including a layer of phosphor in which a product of an absorption coefficient for the excitation light and a thickness of said layer of phosphor is within a range from 1 to 8.
2 more elements
Dependencies are inferred from the claim text.