Claims
- 1. A time-division image projector, comprising:a light source that radiates white light; a transmission color wheel, in which are mounted a plurality of color filters that each transmit only light of specific wavelength bands, and that selectively transmit only light of said specific wavelength bands of said white light from said light source; a reflection element formed, for which the normal of the reflecting surface is arranged at an inclination with respect to light that is irradiated into said transmission color wheel, and that reflects light of said specific wavelength bands that is transmitted by said color filters in a different direction; an optical modulation element that is supplied, in time divisions, with a plurality of image signals that each correspond to light of a respective one of said specific wavelength bands that has been reflected by said reflection element, and that modulates, in pixel units, the intensity of light of said specific wavelength bands according to said plurality of image signals; a projection lens that projects the light that is emitted from said optical modulation element; and a motor that is linked with an axis of rotation of said transmission color wheel and that causes said transmission color wheel to rotate in synchronism with the timing of supply of said plurality of image signals that correspond to light of said specific wavelength bands, wherein said reflection element is substantially adjacent to said transmission color wheel.
- 2. A time-division image projector according to claim 1, wherein said optical modulation element comprises a reflective liquid crystal light valve constructed by arranging a multiplicity of liquid crystal pixels.
- 3. A time-division image projector according to claim 1, wherein said optical modulation element comprises a transmission liquid crystal light valve constructed by arranging a multiplicity of liquid crystal pixels.
- 4. The time-division image projector according to claim 1, wherein an angle of inclination of said reflected light from said reflection element to said transmission color wheel is 20° or less.
- 5. The time-division image projector according to claim 1, wherein said reflection element is formed between said transmission color wheel and said motor for driving said transmission color wheel.
- 6. The time-division image projector according to claim 1, wherein said reflection element reflects said light in a direction of said transmission color wheel.
- 7. The time-division image projector according to claim 1, further comprising a reflective liquid crystal light valve on said side opposite said reflection element.
- 8. A time-division image projector, comprising:a light source that radiates white light; a transmission color wheel, in which are mounted a plurality of color filters that each transmit only light of specific wavelength bands, and that selectively transmit only light of said specific wavelength bands of said white light from said light source; a reflection element, for which the normal of the reflecting surface is arranged at an inclination with respect to light that is irradiated into said transmission color wheel, and that reflects light of said specific wavelength bands that is transmitted by said color filters in a direction that is different without causing said light to again pass through said color filters; a polarization beam splitter that transmits reflected light of said reflection element and that reflects light that is irradiated from a side opposite said reflection element; a reflective optical modulation element that is supplied, in time divisions, with a plurality of image signals that each correspond to light of a respective one of said specific wavelength bands that has been reflected by said reflection element, and that modulates, in pixel units, the intensity of reflection of light of said specific wavelength bands according to said plurality of image signals; a projection lens that projects the light that is emitted from said reflective optical modulation element; and a motor that is linked with an axis of rotation of said transmission color wheel and that causes said transmission color wheel to rotate in synchronism with the timing of supply of said plurality of image signals that correspond to light of said specific wavelength bands, wherein said reflection element is substantially adjacent to said transmission color wheel.
- 9. A time-division image projector according to claim 8, wherein said reflective optical modulation element comprises a reflective liquid crystal light valve constructed by arranging a multiplicity of liquid crystal pixels.
- 10. A time division image projector according to claim 8, wherein said plurality of color filters comprise dichroic filters having wavelength selectively.
- 11. A time-division image projector according to claim 8, wherein said reflection element comprises an optical prism.
- 12. A time-division image projector according to claim 8, wherein said reflection element is supported independently of said color wheel and said motor.
- 13. A time-division image projector according to claim 8, further comprising a first condenser lens immediately following said light source for causing light that is emitted from said light source to converge at the surface of said transmission color wheel.
- 14. A time-division image projector according to claim 8, further comprising a second condenser lens immediately following said reflection element for focusing light that is reflected by said reflection element.
- 15. The time-division image projector according to claim 8, wherein said reflection element receives said light directly from said transmission color wheel.
- 16. The time-division image projector according to claim 8, wherein said reflection element is supported independently of said transmission color wheel.
- 17. A time-division image projector, comprising:a light source that radiates white light; a transmission color wheel, in which are mounted a plurality of color filters that each transmit only light of specific wavelength bands, and that selectively transmit only light of said specific wavelength bands of said white light from said light source; a reflection element, for which the normal of the reflecting surface is arranged at an inclination with respect to light what is irradiation into said transmission color wheel, and that reflects light of said specific wavelength bands that is transmitted by said color filters in a direction that is different without causing said light to again pass through said color filters; a transmission optical modulation element that is supplied, in time divisions, with a plurality of image signals that each correspond to light of a respective one of said specific wavelength bands that has been reflected by said reflection element, and that modulates, in pixel units, the intensity of transmission of light of said specific wavelength bands according to said plurality of image signals; a projection lens that projects the light that is emitted from said transmission optical modulation element; and a motor that is linked with an axis of rotation of said transmission color wheel and that causes said transmission color wheel to rotate in synchronism with the timing of supply of said plurality of image signals that corresponds to light of said specific wavelength bands, wherein said reflection element is substantially adjacent to said transmission color wheel.
- 18. A time division image projector according to claim 17, wherein said transmission optical modulation element is comprises a transmission liquid crystal light valve constructed by arranging a multiplicity of liquid crystal pixels.
- 19. A time-division image projector according to claim 17, wherein said plurality of color filters comprise dichroic filters having wavelength selectively.
- 20. A time-division image projector according to claim 17, wherein said reflection element comprises an optical prism.
- 21. A time-division image projector according to claim 17, wherein said reflection element is supported independently of said color wheel and said motor.
- 22. A time-division image projector according to claim 17, further comprising a first condenser lens immediately following said light source for causing light that is emitted from said light source to converge at the surface of said transmission color wheel.
- 23. A time-division image projector according to claim 17, further comprising a second condenser lens immediately following said reflection element for focusing light that is reflected by said reflection element.
Priority Claims (1)
Number |
Date |
Country |
Kind |
11-270613 |
Sep 1999 |
JP |
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Parent Case Info
The present Application is a Divisional Application of U.S. patent application Ser. No. 09/667,703, filed on Sep. 22, 2000, now U.S. Pat. No. 6,574,046.
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