| Patent Number |
Title Of Patent |
Date Issued |
| 7407293 |
Projection type image display unit |
August 5, 2008 |
| An ion wind generator is arranged in the vicinity of a light source. The ion wind generator allows an air flow by negatively ionizing air by corona discharges using negative side needle electrodes, and drawing the negatively-ionized air using a ground side mesh electrode. High-temper |
| 7270425 |
Projection type video display |
September 18, 2007 |
| An optimal processing portion (21) inputs a video signal (RGB signals) and analyzes 1-frame video in the video signal. For example, if the intensity of red color is 0 percent in all dots in 1-frame video, the optimal processing portion (21) applies to a light source gain adjustment porti |
| 7210790 |
Projection type video display |
May 1, 2007 |
| An ion wind generator (20) is arranged on one side of a light source (1). The ion wind generator (20) produces an air current by negatively ionizing air by corona discharges at a needle electrode (21), or negative side, and drawing the negatively-ionized air at a cylindrical electrode |
| 7204605 |
Illuminating device and projection type video display apparatus |
April 17, 2007 |
| The auxiliary light source has LED chips respectively emitting red lights arranged therein in an array shape, and has lens cells for parallelizing light arranged therein on the light exit side of the LED chips, for example. The LED chip is arranged in correspondence with each of lenses |
