Light-collecting device, light-collecting device array,...

Details Light-collecting device, light-collecting device array,... Light-collecting device, light-collecting device array,...

2009-09-11

2011-12-20

Chang, Audrey Y (Department: 2872)

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

C359S019000, C359S025000, C385S037000

Reexamination Certificate

active

08081360

ABSTRACT:
A light-collecting device is provided, a light-collecting device, including: a first volume hologram recorded in a hologram recording layer by interference of a first spherical wave and a planar wave, the first spherical wave passing through a light path of diffused light which radiates from a light incident point, passes through the hologram recording layer and spreads to a predetermined diameter; and a second volume hologram recorded in the hologram recording layer by interference of a second spherical wave and the planar wave, the second spherical wave passing through a light path of converging light which radiates from the same side as the first spherical wave, passes through the hologram recording layer and converges at an image-forming point distanced from the hologram recording layer by a predetermined distance, the planar wave intersecting with the first spherical wave and the second spherical wave.

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patent: 7167286 (2007-01-01), Anderson et al.
patent: 7649660 (2010-01-01), Adibi et al.
patent: 2007/0147735 (2007-06-01), Kim
patent: A-60-116479 (1985-06-01), None
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patent: A-2007-237576 (2007-09-01), None
Jun. 14, 2011 Office Action issued in Japanese Patent Application No. 2009-066067 (with translation).

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