Color-separating apparatus for liquid crystal projector of single panel type
AssigneeLG Electronics Inc.
InventorKee Tae Um
Life of this patent
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Abstract
A color-separating apparatus for a liquid crystal projector of single panel type that is capable of improving light efficiency and color revival property. In the apparatus, a color filter has red, green and blue colors formed in a spiral shape. A reflective plate is opposed to the color filter to reflect an incident light reflected and emitted from the color filter into the color filter again. Accordingly, a color light is transmitted with no light loss.
Claims15
A color wheel apparatus, comprising:
- a color filter in which red, green and blue colors are formed in a spiral shape;
- and
- a reflective plate opposed to the color filter to reflect an incident light reflected and emitted from the color filter into the color filter again.
A color-separating apparatus for a liquid crystal projector of single panel type, comprising:
- a color wheel including a color filter in which red, green and blue colors are formed in a spiral shape, and a reflective plate opposed to the color filter to reflect an incident light reflected and emitted from the color filter into the color filter again;
- a condensing lens for focusing a color light emitted from the color wheel;
- a polarizing prism for reflecting and transmitting an incident light inputted from the condensing lens in accordance with a polarized direction;
- a display device for reflecting the color light reflected from the polarizing prism and being incident thereto in accordance with an image signal to implement a picture light loaded with picture information;
- and
- a projective lens for projecting the picture light from the display device on an expanded scale.
A color-separating apparatus for a liquid crystal projector of single panel type, comprising:
- a color wheel having alternating red, green and blue concentric circles;
- and
- a full-reflecting mirror, being fixed to an incidence surface of the color wheel, for reflecting an incident light reflected and emitted from the incidence surface of the color wheel toward the color wheel.
Dependencies are inferred from the claim text.