公开(公告)号：EP1811333B1

公开(公告)日：2017-12-27

申请号：EP05721284.7

申请日：2005-03-23

Applicant: Sharp Kabushiki Kaisha

Inventor： WATANABE, Takefumi ,  SASANUMA, Yoshio

IPC: G03B21/26 ,  G02B26/00 ,  G02B26/08 ,  G03B33/08 ,  H04N9/31 ,  G03B21/00

CPC classification number: G03B21/26 ,  G02B26/008 ,  G02B26/0833 ,  G03B21/008 ,  G03B33/08 ,  H04N9/3114 ,  H04N9/3155

Abstract: A single plate type projector has a DMD 3 and a rotary color filter 2. The DMD 3 converts light emitted from a lamp 1 into modulated light. The rotary color filter 2 separates the emission light from the lamp 1 into plural colors by rotating a rotary region which is interposed between the lamp 1 and the DMD 3 and on which light transmittance filter segments allowing each of different colors to pass are arranged. In such a projector, there has been a trade-off relation between the brightness of the entire image and color reproducibility because the amount of light of each color and the brightness of the entire image are restricted by the rotary filter. The amount of light emitting from the lamp 1 is controlled so that the amount of light increases during a period when the light emitted from the lamp 1 passes through at least one of the plurality of filter segments in the rotary color filter 2. Consequently, the brightness of the entire image and the color reproducibility can be arbitrarily regulated by regulating the quantity of light being emitted from the lamp 1.

公开(公告)号：EP1811333A1

公开(公告)日：2007-07-25

申请号：EP05721284.7

申请日：2005-03-23

Applicant: SHARP KABUSHIKI KAISHA

Inventor： WATANABE, Takefumi ,  SASANUMA, Yoshio

IPC: G03B21/00 ,  G02B5/20 ,  G03B21/14 ,  G02F1/133

CPC classification number: G03B21/26 ,  G02B26/008 ,  G02B26/0833 ,  G03B21/008 ,  G03B33/08 ,  H04N9/3114 ,  H04N9/3155

Abstract: A single plate type projector has a DMD 3 and a rotary color filter 2. The DMD 3 converts light emitted from a lamp 1 into modulated light. The rotary color filter 2 separates the emission light from the lamp 1 into plural colors by rotating a rotary region which is interposed between the lamp 1 and the DMD 3 and on which light transmittance filter segments allowing each of different colors to pass are arranged. In such a projector, there has been a trade-off relation between the brightness of the entire image and color reproducibility because the amount of light of each color and the brightness of the entire image are restricted by the rotary filter. The amount of light emitting from the lamp 1 is controlled so that the amount of light increases during a period when the light emitted from the lamp 1 passes through at least one of the plurality of filter segments in the rotary color filter 2. Consequently, the brightness of the entire image and the color reproducibility can be arbitrarily regulated by regulating the quantity of light being emitted from the lamp 1.

Abstract translation: 单板式投影仪具有DMD 3和旋转滤色器2.DMD 3将从灯1发出的光转换为调制光。 旋转滤色器2通过旋转插入在灯1和DMD 3之间的旋转区域并且允许通过不同颜色的透光滤光片段布置来将灯1的发射光分离成多种颜色。 在这样的投影仪中，由于旋转滤光器限制了各种颜色的光量和整个图像的亮度，因此整个图像的亮度和色彩再现性之间存在权衡关系。 控制从灯1发光的光量，使得在从灯1发出的光通过旋转滤色镜2中的多个滤光片段中的至少一个的期间，光的量增加。因此， 可以通过调节从灯1发射的光量来任意调节整个图像的亮度和颜色再现性。