Projection type display apparatus

• Main Authors: SANNOHE SHINYA, WADA MITSUHIRO, FUSHIMI YOSHIMASA
• Format: Patent
• Language: Chinese; English
• Published: 23.06.2010
• Subjects: ACCESSORIES THEREFOR; ADVERTISING; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION; CINEMATOGRAPHY; CRYPTOGRAPHY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DISPLAY; EDUCATION; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; ELECTROGRAPHY; FREQUENCY-CHANGING; HOLOGRAPHY; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHOTOGRAPHY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; SEALS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

A projection type display apparatus comprises a rotational color filter (8) having color filters (8R, 8G, 8B) that transmit a white light to a specific color light emitted from a light emitting surface (6), a spatial light modulation element (11) disposed substantially in a conjugate relationship with the light emitting surface and modulating the incident light from the rotational color filter toperform an image display, and a controller (20) performing control so that the rotation of the rotational color filter is synchronized with the image display performed by the spatial light modulationelement. In synchronization with passing of the borderlines (51, 52, 53), which are between the filters of each color of the rotational color filter, across each of partial light emitting regions (6a, 6b, 6c, ...) set by dividing the light emitting surface, the controller switches between the normal image display and the OFF-state in which light is blocked, for each of the partial display regions(14, 15, 16, ...) of the sp