Projection system for a projector and/or a vehicle light--.
US-2017139096-A1 · May 18, 2017 · US
Vehicle lamp
US9970619B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9970619-B2 |
| Application number | US-201615090434-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 4, 2016 |
| Priority date | Apr 3, 2015 |
| Publication date | May 15, 2018 |
| Grant date | May 15, 2018 |
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- Title
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- Abstract
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- First independent claim
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Abstract
Official abstract text for this publication.
A vehicle lamp includes a semiconductor laser element configured to emit laser light; a condenser lens configured to condense the laser light, a phosphor configured to form white light by converting wavelength of at least a portion of the laser light condensed, and a reflector configured to reflect the white light. A scattered light forming part is formed on a surface of the reflector, which is a surface at which a path obtained by extending an optical path of the laser light before the laser light hits the phosphor is intersected with the reflector.
First claim
Opening claim text (preview).
What is claimed is: 1. A vehicle lamp comprising: a semiconductor laser element configured to emit laser light; a condenser lens configured to condense the laser light; a phosphor configured to form white light by converting wavelength of at least a portion of the laser light condensed; a reflector configured to reflect the white light; a scattered light forming part formed on a surface of the reflector, which is a surface at which a path obtained by extending an optical path of the laser light before the laser light hits the phosphor is intersected with the reflector; and a shade provided between the phosphor and the scattered light forming part, wherein the condenser lens is configured to be moved to a maximum movement expected position, past which movement is not possible, and wherein the shade comprises a pin hole that is structured and positioned such that, at the maximum movement expected position of the condenser lens, a straight line connecting the condenser lens and an outer edge of the scattered light forming part passes through the pin hole. 2. The vehicle lamp according to claim 1 , wherein the scattered light forming part is an auxiliary phosphor disposed on the surface of the reflector. 3. The vehicle lamp according to claim 1 , wherein the scattered light forming part is a curved surface or an irregular surface, which is formed on the surface of the reflector. 4. The vehicle lamp according to claim 1 , wherein the scattered light forming part is a diffusing agent disposed on the surface of the reflector. 5. A vehicle lamp comprising: a semiconductor laser element configured to emit laser light; a condenser lens configured to condense the laser light; a phosphor configured to form white light by converting wavelength of at least a portion of the laser light condensed; a reflector configured to reflect the white light; a diffraction grating provided on a surface of the reflector, which is a surface at which a path obtained by extending an optical path of the laser light before the laser light hits the phosphor is intersected with the reflector; and a shade provided between the phosphor and the diffraction grating, wherein the condenser lens is configured to be moved to a maximum movement expected position, past which movement is not possible, and wherein the shade comprises a pin hole that is structured and positioned such that, at the maximum movement expected position of the condenser lens, a straight line connecting the condenser lens and an outer edge of the diffraction grating passes through the pin hole. 6. The vehicle lamp according to claim 5 , further comprising: at least one light detector, wherein out of the light irradiated to the diffraction grating, light of a specific wavelength range is diffracted and guided to the one or two or more light detectors.
Assignees
Inventors
Classifications
Light sources where the light is generated by photoluminescent material spaced from a primary light generating element · CPC title
Protecting the laser, e.g. during switch-on/off, detection of malfunctioning or degradation · CPC title
of lens shape · CPC title
- F21V9/40Primary
with provision for controlling spectral properties, e.g. colour, or intensity · CPC title
Prevention of harmful light leakage · CPC title
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Frequently asked questions
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- What does patent US9970619B2 cover?
- A vehicle lamp includes a semiconductor laser element configured to emit laser light; a condenser lens configured to condense the laser light, a phosphor configured to form white light by converting wavelength of at least a portion of the laser light condensed, and a reflector configured to reflect the white light. A scattered light forming part is formed on a surface of the reflector,…
- Who is the assignee on this patent?
- Koito Mfg Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F21V9/40. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue May 15 2018 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).