Laser system
AssigneeKYOCERA SOC Corporation
InventorMinoru Kadoya
Life of this patent
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Abstract
A laser system includes: a laser light source; a light detector configured to output an electric current proportional to an output laser light of the laser light source; a resistor network configured to convert the electric current output from the light detector to a monitor voltage; and a regulator configured to control an intensity of the output laser light based on a comparison between the monitor voltage and a voltage corresponding to a control target value, wherein the resistor network comprises at least two branch circuits connected in parallel with each other, and the branch circuits include respective digital potentiometer circuits commonly formed in a single device.
Claims6
A laser system, comprising:
- a laser light source;
- a light detector configured to output an electric current proportional to an output laser light of the laser light source;
- a resistor network configured to convert the electric current output from the light detector to a monitor voltage;
- and
- a regulator configured to control an intensity of the output laser light based on a comparison between the monitor voltage and a voltage corresponding to a control target value,
- wherein the resistor network comprises at least two branch circuits connected in parallel with each other,
- the branch circuits include respective digital potentiometer circuits commonly formed in a single device,
- one of the branch circuits includes an additional resistor connected in series with the digital potentiometer circuit thereof, and
- the additional resistor has a resistance about half of a value obtained by dividing a nominal value of a total resistance of the digital potentiometer circuit by a number of steps of the digital potentiometer circuit.
Dependencies are inferred from the claim text.