Light diffusion unit
AssigneeNEC Corporation
InventorKeiichiro Kumagai
Life of this patent
Estimating the term…
Abstract
A light diffusion unit includes (a) a substrate formed with a first hole, (b) a case formed with a second hole and covering the substrate therewith, (c) a light source mounted on the substrate, (d) a light diffuser arranged in the second hole of the case for externally radiating a light emitted from the light source, and (e) a light guide arranged between the substrate and the light diffuser for introducing a light emitted from the light source, to the light diffuser, the light guide partially making close contact with the light diffuser and being partially arranged in the first hole of the substrate.
Claims18
A light diffusion unit comprising:
- (a) a substrate formed with a first hole;
- (b) a case formed with a second hole and covering said substrate therewith;
- (c) a light source mounted on said substrate;
- (d) a light diffuser arranged in said second hole of said case for externally radiating a light emitted from said light source;
- and
- (e) a light guide arranged between said substrate and said light diffuser for introducing a light emitted from said light source, to said light diffuser, said light guide partially making close contact with said light diffuser and being partially arranged in said first hole of said substrate.
Alight diffusion unit comprising:
- (a) a substrate formed with a fist hole;
- (b) a case having a first portion covering an upper surface of said substrate therewith and a second portion covering a lower surface of said substrate therewith, said first portion being formed with a second hole and said second portion being formed with a third hole;
- (c) a light source mounted on said substrate;
- (d) a first light diffuser arranged in said second hole of said first portion of said case for externally radiating a light emitted from said light source;
- (e) a second light diffuser arranged in said third hole of said second portion of said case for externally radiating a light emitted from said light source;
- and
- (f) a light guide arranged between said first and second light diffusers for introducing a light emitted from said light source, to said first and second light diffusers,
- said light guide having an upper surface at which said light guide makes close contact with said first light diffuser, a lower surface at which said light guide makes close contact with said second light diffuser, and a main body slidable through said first hole of said substrate.
A light diffusion unit comprising:
- a substrate having a first hole;
- a case covering said substrate and having a second hole;
- a switch mounted on said substrate;
- a light source mounted directly on said substrate;
- a light diffuser arranged in said second hole for radiating a light emitted from said light source;
- and
- a light guide arranged between said substrate and said light diffuser for diffusing a light emitted from said light source, to said light diffuser, said light guide partially contacting said light diffuser and being partially arranged in said first hole.
Dependencies are inferred from the claim text.