Illumination device
AssigneePanasonic Corporation
InventorsKyohei Nakamura, Toshizumi Okada, Hiroyuki Sekii
Life of this patent
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Abstract
An illumination device includes a plurality of light sources for emitting light and an optical member arranged in front of the light sources to control distribution of the light emitted from the light sources. The optical member includes a plurality of lens portions having storage recess portions formed in alignment with the light sources to accommodate the light sources and a plurality of ribs extending laterally from the lens portions to fix the lens portions to a substrate holding the light sources, each of the lens portions having a light distribution control portion formed in a rear opening edge of each of the storage recess portions to distribute frontward the light emitted from the light sources toward the ribs.
Claims11
An illumination device, comprising:
- a plurality of light sources for emitting light;
- and
- an optical member arranged in front of the light sources to control distribution of the light emitted from the light sources,
- wherein the optical member includes a plurality of lens portions having storage recess portions formed in alignment with the light sources to accommodate the light sources and a plurality of ribs extending laterally from the lens portions to fix the lens portions to a substrate holding the light sources, each of the lens portions having a light distribution control portion formed in a rear opening edge of each of the storage recess portions to distribute frontward the light emitted from the light sources toward the ribs.
An illumination device, comprising:
- a device body;
- a power-feeding unit arranged in a central region of the device body;
- a plurality of LEDs annularly arranged around the power-feeding unit, the LEDs being turned on by electric power supplied from the power-feeding unit;
- an optical member arranged in front of the LEDs to control distribution of the light emitted from the LEDs;
- and
- a diffusing member arranged in front of the optical member to diffuse the light whose distribution is controlled by the optical member,
- wherein the optical member includes forwardly-bulging lens portions provided in alignment with the LEDs, each of the lens portions having a first convex portion arranged in an end portion thereof near the power-feeding unit in a first direction interconnecting each of the lens portions and the power-feeding unit and configured to distribute the light emitted from the corresponding LEDs toward a central region of the diffusing member;
- and a second convex portion arranged in the opposite end portion from the power-feeding unit in the first direction and configured to distribute the light emitted from the corresponding LEDs toward an outer edge region of the diffusing member.
Dependencies are inferred from the claim text.