| US 7,548,376 B2 | ||
| Total internal reflection micro lens array | ||
| Jin Jong Kim, Kyungki-do (Korea, Republic of); Alexander Evgenievich Linkov, St.-Petersburg (Russian Federation); and Hee Dong Kim, Seoul (Korea, Republic of) | ||
| Assigned to Samsung Electro-Mechanics Co., Ltd., Gyunggi-Do (Korea, Republic of) | ||
| Filed on Sep. 18, 2006, as Appl. No. 11/522,423. | ||
| Claims priority of application No. 2005128772 (RU), filed on Sep. 16, 2005. | ||
| Prior Publication US 2007/0091444 A1, Apr. 26, 2007 | ||
| Int. Cl. G02B 27/10 (2006.01); F21V 5/00 (2006.01); F21V 5/02 (2006.01) | ||
| U.S. Cl. 359—628 [362/337; 362/339] | 7 Claims |
| 1. A total internal reflection optical microstructure array comprising:
an optical incidence surface;
a plurality of optical microstructures formed on a surface opposite to the optical incidence surface, each of the optical
microstructures comprising a plurality of concentric and annular outwardly-extending prismatic units, each of the prismatic
units having a reflecting surface and a refractive surface,
wherein light incident from the optical incidence surface is totally internally reflected by the reflecting surface of the
prismatic unit, and the reflected light is refracted by the refractive surface of the prismatic unit and exits,
wherein a first prismatic unit close to the center of the optical microstructure has a more elevated position than a second
prismatic unit close to the edge of the optical microstructure with respect to the optical incidence surface.
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