Frequency stabilized light source
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United States of America Patent
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Feb 15, 1994
Grant Date -
N/A
app pub date -
May 5, 1992
filing date -
May 10, 1991
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Abstract
A light source which is stabilized in frequencies at uniform intervals comprises a light source 5 whose light frequency is varied with a signal from a reference signal source 4; a frequency detector 6 for detecting the frequency of the output of the light source 5, the cycles of the said frequency detector being the same as the uniform intervals; a comparator 2 for comparing the output of the frequency detector 6 and the output of the reference light source 1; and a switch 3 having as its input the output of the comparator 2 for inputting the output to the light source 5, said switch being so operated that when the frequency of the light source 5 is to be changed the switch is opened and the output of the reference signal source 4 is changed to set the output frequency of the light source 5 near the desired frequency and then the switch 3 is closed.
First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- ANDO ELECTRIC CO., LTD.;NIPPON TELEGRAPH AND TELEPHONE CORPORATION
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Horiguchi, Tsuneo | Mito, JP | 25 | 317 |
Matsuura, Satohi | Tokyo, JP | 1 | 1 |
Ri, Tekken | Tokyo, JP | 1 | 1 |
Tateda, Mitsuhiro | Mito, JP | 5 | 99 |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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