| US 7,614,754 B2 | ||
| Optical projection apparatus | ||
| Chin-Ku Liu, Miao-Li County (Taiwan); and Sze-Ke Wang, Miao-Li County (Taiwan) | ||
| Assigned to Coretronic Corporation, Miao-Li County (Taiwan) | ||
| Filed on Apr. 12, 2006, as Appl. No. 11/403,415. | ||
| Claims priority of application No. 94112671 A (TW), filed on Apr. 21, 2005. | ||
| Prior Publication US 2006/0238719 A1, Oct. 26, 2006 | ||
| Int. Cl. G03B 21/28 (2006.01) | ||
| U.S. Cl. 353—98 [353/81; 348/771; 349/5] | 20 Claims |
| 1. An optical projection apparatus, comprising:
an illumination system, suitable for providing a light beam;
a reflective light valve, disposed on a transmission path of the light beam and suitable for converting the light beam into
an image;
an imaging system, disposed on a transmission path of the image;
a first reflective component, disposed both between the reflective light valve and the imaging system and between the reflective
light valve and the illumination system, and disposed on the transmission path of the light beam and the image, suitable for
reflecting the light beam onto the reflective light valve and then reflecting the image produced by the reflective light valve
into the imaging system, wherein the first reflective component does not have a magnifying function; and
a lens, disposed between the reflective light valve and the first reflective component and on the transmission path of the
light beam and the image.
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