Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1996-04-22
1999-11-02
Bacares, Rafael
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
372 29, 372 38, H04B 1004
Patent
active
059781246
ABSTRACT:
A light emitting control apparatus comprises a light emitting element which emits a light when an input electrical signal is converted into a light signal, a monitoring circuit which monitors the output level of the light emitting element, a sample-and-hold circuit which detects a peak value and is put into the sample mode when data of the monitoring circuit is in the mark state showing voltage and which is in turn put into the hold mode when the data is in the space state showing no voltage, and an amplifier which accomplishes negative feedback control of the output level of the light emitting element by using the output of the sample-and-hold circuit. Thus, the apparatus can quickly respond to a change of the input state and stabilize the output level of the light emitting element for a long time.
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Kitayama Tadayoshi
Maekawa Eiji
Motoshima Kuniaki
Satoh Susumu
Bacares Rafael
Mitsubishi Denki & Kabushiki Kaisha
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