US 11,994,695 B2 · Fly-eye lens module, lighting device, and DLP optical engine

Abstract

The present disclosure provides a fly-eye lens module, a lighting device, and a DLP optical engine. The fly-eye lens module includes a first plastic fly-eye lens, a second plastic fly-eye lens, and a glass triangular prism structure. The first plastic fly-eye lens is provided on a surface thereof with a first circular region, and the second plastic fly-eye lens is provided on a surface thereof with a second circular region. The first and the second circular regions are both configured as a fly-eye structure having a concave-convex structure, and are respectively fixed to two sides of the cuboid glass structure by a bonding agent. The second and the first plastic fly-eye lenses are disposed such that the light spot emitted from the point light source is incident to the fly-eye lens module via the first plastic fly-eye lens, and is emitted from the second plastic fly-eye lens.

Claims20

Dependent claims

A fly-eye lens module, comprising:

a first plastic fly-eye lens, provided on a surface thereof with a first circular region, wherein the first circular region is configured as a fly-eye structure having a concave-convex structure, and the first circular region is configured to receive a circular light spot emitted from a point light source;
a second plastic fly-eye lens, provided on a surface thereof with a second circular region, wherein the second circular region is configured as a fly-eye structure having a concave-convex structure, and the second circular region is configured to emit a homogenized circular light spot;
and
a cuboid glass structure, wherein the first plastic fly-eye lens and the second plastic fly-eye lens are fixed to two sides of the cuboid glass structure respectively by a bonding agent;
wherein the second plastic fly-eye lens and the first plastic fly-eye lens are disposed such that the light spot emitted from the point light source is incident to the fly-eye lens module via the first plastic fly-eye lens, and is emitted from the second plastic fly-eye lens.

2 more elements

A lighting device, comprising:

a point light source, configured to emit a circular light spot;
and
a fly-eye lens module, disposed in a light emitting direction of the point light source, and configured to convert the circular light spot to a homogenized circular light spot;
wherein fly-eye lens module comprises:
a first plastic fly-eye lens, provided on a surface thereof with a first circular region, wherein the first circular region is configured as a fly-eye structure having a concave-convex structure, and the first circular region is configured to receive the circular light spot emitted from the point light source;
a second plastic fly-eye lens, provided on a surface thereof with a second circular region, wherein the second circular region is configured as a fly-eye structure having a concave-convex structure, and the second circular region is configured to emit the homogenized circular light spot;
and
a cuboid glass structure, wherein the first plastic fly-eye lens and the second plastic fly-eye lens are fixed to two sides of the cuboid glass structure respectively by a bonding agent;
wherein the second plastic fly-eye lens and the first plastic fly-eye lens are disposed such that the light spot emitted from the point light source is incident to the fly-eye lens module via the first plastic fly-eye lens, and is emitted from the second plastic fly-eye lens.

6 more elements

A DLP optical engine, comprising:

a lighting device, comprising:
a point light source, configured to emit a circular light spot;
and
a fly-eye lens module, disposed in a light emitting direction of the point light source, and configured to convert the circular light spot to a homogenized circular light spot;
wherein fly-eye lens module comprises:
a first plastic fly-eye lens, provided on a surface thereof with a first circular region, wherein the first circular region is configured as a fly-eye structure having a concave-convex structure, and the first circular region is configured to receive the circular light spot emitted from the point light source;
a second plastic fly-eye lens, provided on a surface thereof with a second circular region, wherein the second circular region is configured as a fly-eye structure having a concave-convex structure, and the second circular region is configured to emit the homogenized circular light spot;
and
a cuboid glass structure, wherein the first plastic fly-eye lens and the second plastic fly-eye lens are fixed to two sides of the cuboid glass structure respectively by a bonding agent;
wherein the second plastic fly-eye lens and the first plastic fly-eye lens are disposed such that the light spot emitted from the point light source is incident to the fly-eye lens module via the first plastic fly-eye lens, and is emitted from the second plastic fly-eye lens;
a DMD chip, disposed in a light emitting direction of the lighting device, and configured to receive the homogenized circular light spot emitted from the lighting device and emit a light beam containing image information;
and
a lens group, disposed in a light emitting direction of the DMD chip, and configured to output an imaging light beam.

10 more elements

Dependencies are inferred from the claim text.

Fly-eye lens module, lighting device, and DLP optical engine

Life of this patent

Fly-eye lens module, lighting device, and DLP optical engine

Life of this patent

Abstract

Claims20