Methods and Apparatus for Illumination with DMD and Laser Modulated Adaptive Beam Shaping
US-2015377446-A1 · Dec 31, 2015 · US
Light projection apparatus, light condensing unit, and light emitting apparatus
US9228710B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9228710-B2 |
| Application number | US-201213466716-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 8, 2012 |
| Priority date | Jun 13, 2011 |
| Publication date | Jan 5, 2016 |
| Grant date | Jan 5, 2016 |
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- Title
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Abstract
Official abstract text for this publication.
A light projection apparatus that can produce an elongate light projection pattern is provided. The light projection apparatus includes a fluorescent member which is excited with exciting light and a light projecting member which reflects or transmits the light emanating from the fluorescent member to project it outside. The fluorescent member includes an irradiated region which is irradiated with the exciting light, and the length of the irradiated region in a first direction is greater than its length in a second direction.
First claim
Opening claim text (preview).
What is claimed is: 1. A light projection apparatus, comprising: a fluorescent member which is excited with exciting light; and a light projecting member which reflects or transmits light emanating from the fluorescent member to project the light outside, wherein the fluorescent member includes an irradiated face, and the irradiated face includes an irradiated region which is irradiated with the exciting light such that a length of the irradiated region in a first direction is greater than a length of the irradiated region in a second direction perpendicular to the first direction and parallel to the irradiated face of the fluorescent member. 2. The light projection apparatus according to claim 1 , further comprising a light condensing member which includes a light entrance face through which the exciting light enters and a light exit face that has a smaller area than the light entrance face and through which the exciting light exits, wherein a length of the light exit face in the first direction is greater than a length of the light exit face in the second direction. 3. The light projection apparatus according to claim 1 , wherein the irradiated region has a rectangular, elliptical, or elongate hexagonal shape. 4. The light projection apparatus according to claim 1 , wherein the light projecting member includes a reflecting member which reflects the light emanating from the fluorescent member to project the light outside. 5. The light projection apparatus according to claim 1 , wherein the exciting light includes laser light.
Assignees
Inventors
Classifications
Means for removing heat created by the light source from the package · CPC title
Light guides · CPC title
characterised by the light source being coupled to the light guide · CPC title
Arrangements of plural sources, e.g. multi-colour light sources · CPC title
Light sources where the light is generated by photoluminescent material spaced from a primary light generating element · CPC title
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- What does patent US9228710B2 cover?
- A light projection apparatus that can produce an elongate light projection pattern is provided. The light projection apparatus includes a fluorescent member which is excited with exciting light and a light projecting member which reflects or transmits the light emanating from the fluorescent member to project it outside. The fluorescent member includes an irradiated region which is irradiated w…
- Who is the assignee on this patent?
- Takahashi Koji, Takahira Yoshiyuki, Sharp Kk
- What technology area does this patent fall under?
- Primary CPC classification F21S48/1145. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jan 05 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).