Laser device
US-9214784-B2 · Dec 15, 2015 · US
Wavelength conversion device and image display apparatus using same
US8976203B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8976203-B2 |
| Application number | US-201113266956-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 1, 2011 |
| Priority date | Mar 2, 2010 |
| Publication date | Mar 10, 2015 |
| Grant date | Mar 10, 2015 |
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Abstract
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A wavelength conversion device includes an excitation light source that generates excitation light, a laser medium that generates fundamental light by means of the excitation light, two resonator mirrors that are disposed with the laser medium being interposed therebetween and resonate the fundamental light, a wavelength conversion element that is disposed between the two resonator mirrors and wavelength-converts the fundamental light to harmonic light, and a drive unit that generates a pulse modulation signal to pulse-drive the excitation light source. The laser medium is formed of a material having a thermo-optical effect and a positive thermo-optical constant. The pulse modulation signal generated by the drive unit has an initial interval including a rising edge of a pulse and a remaining interval subsequent to the initial interval. An average signal intensity during the initial interval is higher than an average signal intensity during the remaining interval.
First claim
Opening claim text (preview).
The invention claimed is: 1. A wavelength conversion device, comprising: an excitation light source that generates excitation light; a laser medium that generates fundamental light by means of the excitation light; two resonator mirrors that are disposed with the laser medium being interposed therebetween and resonate the fundamental light; a wavelength conversion element that is disposed between the two resonator mirrors and wavelength-converts the fundamental light to harm…
Assignees
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Classifications
Electricity · mapped topic
- H01S3/109Primary
Electricity · mapped topic
Physics · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8976203B2 cover?
- A wavelength conversion device includes an excitation light source that generates excitation light, a laser medium that generates fundamental light by means of the excitation light, two resonator mirrors that are disposed with the laser medium being interposed therebetween and resonate the fundamental light, a wavelength conversion element that is disposed between the two resonator mirrors and …
- Who is the assignee on this patent?
- Nakayama Kenji, Mizushima Tetsuro, Itoh Tatsuo, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification H01S3/109. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 10 2015 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).