| US 7,612,943 B2 | ||
| Optical device and crystallization device | ||
| Takashi Ono, Hadano (Japan); Kazufumi Azuma, Yokohama (Japan); and Masakiyo Matsumura, Kamakura (Japan) | ||
| Assigned to Advanced LCD Technologies Development Center Co., Ltd., Yokohama-shi (Japan) | ||
| Filed on Oct. 19, 2007, as Appl. No. 11/875,276. | ||
| Claims priority of application No. 2006-304417 (JP), filed on Nov. 09, 2006. | ||
| Prior Publication US 2008/0112057 A1, May 15, 2008 | ||
| Int. Cl. G02B 27/10 (2006.01) | ||
| U.S. Cl. 359—618 [359/622; 359/626] | 5 Claims |
| 1. An optical device comprising:
a first cylindrical lens array in which a plurality of first lens segments each having a semicylindrical or pseudo-semicylindrical
shape and having a first radius of curvature and a first width so as to divide laser light into a plurality of light components
are arranged; and
second lens segments each having a semicylindrical shape or a pseudo-semicylindrical shape and having a second radius of curvature
and a second width which are respectively different from the first radius of curvature and the first width, and provided in
at least one position of the first cylindrical lens array so as to be interposed between adjacent first lens segments,
wherein
in the first lens segment, a cross-section shape perpendicular to a longitudinal axis thereof is a wedge-like shape, and a
width of an exit section from which transmission light exits is larger than that of an incidence section on which light is
incident, and
in the second lens segment, a cross-sectional shape perpendicular to a longitudinal axis thereof is a wedge-like shape arranged
in the direction reverse to that of the first lens segment, and a width of an exit section from which transmission light exists
is smaller than that of an incidence section on which light is incident.
|