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Fumihiro Sogawa Patents |
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Inventor: Sogawa; Fumihiro
Address: Tokyo, JP
No. of patents: 3
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 5301059 |
Short-wavelength light generating apparatus |
April 5, 1994 |
| A short-wavelength light generating apparatus comprising a pumping semiconductor laser and an intra-cavity solid state laser, the intra-cavity solid state laser is excited in response to a laser light beam from the semiconductor laser to generate a short-wavelength light beam to an e |
| 5274657 |
Phase lock type semiconductor laser |
December 28, 1993 |
| A phase lock type semiconductor laser comprising: an array type semiconductor laser main body which includes a plurality of line-shaped active layers having wave guides disposed in parallel with each other, these active layers having waveguide modes optically coupled with each other, |
| 5161148 |
Optical pick-up using wavelength guide with grating coupler therein |
November 3, 1992 |
| An optical pick-up for an optical disk has a semiconductor laser having an optical axis for generating a laser beam. An objective lens focuses the laser beam onto an optical disk disposed in the path of the optical axis of the semiconductor laser. A wavelength between the semiconductor l |
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