Optical device and lighting device
AssigneeNichia Corporation
InventorsHiroyuki Itahana, Akira Nagahashi
Life of this patent
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Abstract
An optical device includes: a plurality of walls disposed to meet along a first axis and having reflecting surfaces facing a space interposed between the walls; and a plurality of partitions, each having a funnel-like shape and each having an outer surface that includes a curved reflecting surface, the partitions disposed in the space interposed between the walls coaxially with the first axis at multiple levels along the first axis; wherein the outer surface of a first of the partitions located at an upper level is configured to receive at least some light through an opening of a second of the partitions located at lower level.
Claims12
An optical device comprising:
- a plurality of walls disposed to meet along a first axis and having reflecting surfaces facing a space interposed between the walls;
- and
- a plurality of partitions, each having a funnel-like shape and each having an outer surface that includes a curved reflecting surface, the partitions disposed in the space interposed between the walls coaxially with the first axis at multiple levels along the first axis;
- wherein the outer surface of a first of the partitions located at an upper level is configured to receive at least some light through an opening of a second of the partitions located at lower level.
Dependencies are inferred from the claim text.