| Patent Number |
Title Of Patent |
Date Issued |
| 7554729 |
Rear projection display apparatus and transmission type screen |
June 30, 2009 |
| A rear projection display apparatus is provided which includes a transmission type screen installed on the front face of an apparatus main body, and a video projector disposed inside the apparatus main body and projecting video on the transmission type screen from the rear side there |
| 7535637 |
Fresnel lens sheet, transmission type screen and rear projection type display apparatus |
May 19, 2009 |
| A rear projection type display apparatus is disclosed wherein image light reflected upon entrance thereof into a Fresnel lens sheet of the reflection type provided on a transmission type screen is suppressed from making stray light. A Fresnel lens sheet for converting incident light |
| 7525728 |
Transmissive screen and rear projection display apparatus |
April 28, 2009 |
| A transmissive screen includes a first board member on a light source side, the first board member including a Fresnel lens on the surface of the light source side and one of a vertical lenticular lens or a horizontal lenticular lens on the surface of a viewer side; and a second boar |
| 7499213 |
Rear projection display apparatus and transmission type screen |
March 3, 2009 |
| A rear projection display apparatus includes a transmission type screen, a video projector, a lens sheet, a plurality of pull portions, and a pulling device. The transmission type screen is installed on a front face of an apparatus main body. The video projector is disposed inside the |
| 7460299 |
Rear projection display apparatus and transmission type screen |
December 2, 2008 |
| In a rear projection display apparatus including a transmission type screen installed on the front face of an apparatus main body, and a video projector disposed inside the apparatus main body and projecting video on the transmission type screen from the rear side thereof, the transmissi |
| 7379240 |
Rear projection-type screen and rear projection-type image display device |
May 27, 2008 |
| A rear projection-type screen includes two sheet-like members having lenses prevented from being deformed and scratched. In the rear projection-type screen (5) for passing and focusing image light L emitted from an image light source (3), two sheet-like members (a lenticular lens she |
| 7116498 |
Projection optical system and image projection apparatus |
October 3, 2006 |
| A projection optical system and an image projection apparatus that are small in size and can achieve projection with a wide angle while a good image forming performance is assured includes a first lens group having a negative refracting power and a second lens group also having a negativ |
| 6614594 |
Projection panel assembly, projection apparatus, and production method thereof |
September 2, 2003 |
| A projection panel assembly is mounted on a casing for holding a screen so as to mount a front panel on the viewing side of the screen. The projection panel assembly includes a fixing portion for directly fixing the front panel and a supporting portion for movably supporting the front |
| 6144492 |
Optical block and display unit |
November 7, 2000 |
| An optical block, which may be of a small size, for applying light efficiently to a display device such as a liquid crystal panel, and a display apparatus. The optical block (1) has a polarizing beam splitter (3) mounted on baseboard (2) at a predetermined angle with respect to light |
| 5944401 |
Optical block and liquid crystal projector |
August 31, 1999 |
| An optical block which is light in weight and low in price, and has optical path distances equivalent to those obtained with glass has an outside form composed by arranging a polyhedron 8a having a surface of incidence for a blue ray B, a polyhedron 8b having a surface of incidence for a |
