发明名称 |
Coherent light source and control method thereof, and display unit and laser display using them |
摘要 |
In a display device that displays a video by scanning coherent light across a screen, modulation at high speeds and gradation are necessary for a coherent light source. An oscillation wavelength of a semiconductor laser outputting the fundamental wave is changed at high speeds through the plasma effect induced by applying a pulse current to the coherent light source. A change of the wavelength causes the output of a higher harmonic generated in a light wavelength conversion element to change, and gradation is produced using such a change.
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申请公布号 |
US7356056(B2) |
申请公布日期 |
2008.04.08 |
申请号 |
US20050555500 |
申请日期 |
2005.11.03 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
YOKOYAMA TOSHIFUMI;YAMAMOTO KAZUHISA |
分类号 |
H01S3/13;H01S5/00;H01S5/06;H01S5/0625;H01S5/0683;H04N9/31 |
主分类号 |
H01S3/13 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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