Back to results
US 9,851,560 B2Granted
Optical device and projection apparatus
AssigneeIndustrial Technology Research Institute
InventorsMing-Chieh Chou, Chi-Hung Lee, Yi-Cheng Chen
Life of this patent
Estimating the term…
Abstract
An optical device including a first lens array is provided. The first lens array has micro-lens units arranged in an array. An outline of each of the micro-lens units is polygonal-shaped, circular or ellipsoidal. Moreover, a projection apparatus is also provided.
Claims22
A projection apparatus, comprising:
- a projection unit, emitting an image beam;
- and
- a real image forming device, disposed on a transmitting path of the image beam, wherein the image beam forms an image on the real image forming device, and the real image forming device comprises:
- a first lens array, having a plurality of micro-lens units, wherein the micro-lens units are arranged into an array, an outline of each of the micro-lens units is polygonal-shaped, circular, or ellipsoidal, and each of the micro-lens units comprises:
- a first optical micro-structure, having the outline that is polygonal-shaped, circular, or ellipsoidal;
- and
- a second optical micro-structure, wherein the first optical micro-structure surrounds the second optical micro-structure and is connected to the second optical micro-structure, and a shape of an outline of the second optical micro-structure is the same as or different from a shape of the outline of the first optical micro-structure;
- and
- a second lens array, disposed beside the first lens array and having a plurality of columnar micro-lenses parallel to each other.
6 more elements
An optical device, comprising:
- a first lens array, having a plurality of micro-lens units, wherein the micro-lens units are arranged into an array, an outline of each of the micro-lens units is polygonal-shaped, circular, or ellipsoidal, and each of the micro-lens units comprises:
- a first optical micro-structure, having the outline that is polygonal-shaped, circular, or ellipsoidal;
- and
- a second optical micro-structure, wherein the first optical micro-structure surrounds the second optical micro-structure and is connected to the second optical micro-structure, and a shape of an outline of the second optical micro-structure is the same as or different from a shape of the outline of the first optical micro-structure;
- and
- a second lens array, disposed beside the first lens array and having a plurality of columnar micro-lenses parallel to each other.
3 more elements
A projection apparatus, comprising:
- a projection unit, emitting an image beam;
- and
- a real image forming device, disposed on a transmitting path of the image beam, wherein the image beam forms an image on the real image forming device, and the real image forming device comprises:
- a first lens array, having a plurality of micro-lens units, wherein the micro-lens units are arranged into an array, an outline of each of the micro-lens units is circular, and there is a circular hole inside each of the micro-lens units.
1 more element
A projection apparatus, comprising:
- a projection unit, emitting an image beam;
- and
- a real image forming device, disposed on a transmitting path of the image beam, wherein the image beam forms an image on the real image forming device, and the real image forming device comprises:
- a first lens array, having a plurality of micro-lens units, wherein the micro-lens units are arranged into an array, and an outline of each of the micro-lens units is polygonal-shaped, circular, or ellipsoidal;
- and
- a second lens array, disposed beside the first lens array and having a plurality of columnar lenses parallel to each other.
3 more elements
Dependencies are inferred from the claim text.