Lighting apparatus
AssigneeKabushiki Kaisha Toshiba
InventorReiji ONO
Life of this patent
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Abstract
A lighting apparatus includes an LED, a diffusion member, and a light shielding member. The diffusion member is disposed so as to at least partially cover the LED and diffuses light emitted from the LED. The light shielding member is disposed so as to at least partially cover the diffusion member and is provided with a plurality of pinholes through which light diffused by the diffusion member is transmitted. In some example embodiments, the light apparatus can be a planetarium apparatus for projecting star images such as constellations or the like.
Claims20
A lighting apparatus, comprising:
- a light emitting diode;
- a diffusion member at least partially covering the light emitting diode and configured to diffuse light emitted from the light emitting diode;
- and
- a light shielding member that at least partially covers the diffusion member and is provided with a plurality of pinholes through which light diffused by the diffusion member is transmitted.
A planetarium apparatus, comprising:
- a light emitting diode element mounted on a substrate including wiring and electrodes for providing electrical power to the light emitting diode;
- a diffusion member that is translucent at a wavelength of light emitted by the light emitting diode, the diffusion member disposed on the substrate and covering the light emitting diode;
- and
- a constellation plate covering the diffusion member and including a blocking portion, which is opaque to light at a wavelength of light output from the diffusion member, and a plurality of transparent portions in the blocking portion, the transparent portions being at least partially transparent to the wavelength of light output from the diffusion member.
A method of making a lighting apparatus, comprising:
- mounting a light emitting diode on a substrate;
- causing the substrate to have a hydrophobic surface;
- and
- forming a diffusion member having a partial spherical outer surface to cover the light emitting diode mounted on the substrate by putting a resin having a contact angle, with respect to hydrophobic surface of the substrate, that is greater than 90 degrees on the light emitting diode mounted on the substrate, and then curing the resin.
Dependencies are inferred from the claim text.