US 10,768,516 B2 · Projector with laser and phosphor

Abstract

A projector includes a laser light source and a glass wheel. The laser source is configured to generate laser light. The glass wheel is optically coupled to the laser source. The glass wheel includes a first surface and a second surface. The first surface is configured to receive the laser light, and includes a light direction device optically coupled to the laser source. The second surface is opposite the first surface and is configured to emit light. The second surface includes a first arc of a phosphor deposited at a first distance from a center of the glass wheel. The light direction device is configured to direct the laser light to the first arc of the phosphor. The second surface also includes a second arc of the phosphor deposited at a second distance from the center of the glass wheel.

Claims20

Dependent claims

A projector comprising:

a laser source;
a glass wheel optically coupled to the laser source, and comprising:
a first surface comprising:
a first arc of a phosphor deposited at a first distance from a center of the glass wheel;
and
a second arc of the phosphor deposited at a second distance from the center of the glass wheel;
and
a second surface opposite the first surface, and comprising a light direction device optically coupled to the laser source and the first arc of the phosphor.

5 more elements

A projector, comprising:

a laser source configured to generate laser light;
a glass wheel optically coupled to the laser source, and comprising:
a first surface configured to receive the laser light, and comprising a light direction device optically coupled to the laser source;
and
a second surface opposite the first surface and configured to emit light, and comprising:
a first arc of a phosphor deposited at a first distance from a center of the glass wheel, wherein the light direction device is configured to direct the laser light to the first arc of the phosphor;
and
a second arc of the phosphor deposited at a second distance from the center of the glass wheel.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/507,687Filed 10 Jul 2019 · us provisional application

Priority

8 Feb 2019

Published

US 2020/0257187 A113 Aug 2020

Granted

8 Sep 2020

Term ends

Not estimatedThe source records don’t support an estimate.

Classification14 codes

G02B 27/0961
Lenses: lens arrays
G03B 21/2033
Characterised by the light source: lED or laser light sources
G02B 26/008
The movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light: in the form of devices for…
G03B 21/204
LED or laser light sources: using secondary light emission, e.g. luminescence or fluorescence

Projector with laser and phosphor

Life of this patent

Projector with laser and phosphor

Life of this patent

Abstract

Claims20