MDCP: Patent Abstact US06005659: Mini-disc laser power meter and method of making the same

US06005659 Mini-disc laser power meter and method of making the same

Assignee Sony Corporation

Assign./Filed Dec. 21, 1999/ Dec. 15, 1998

Inventors D'Alessandro; Louis D., Pinzavetsky; Izrail F.

Summary MD Laser power meter with the sensor unit in the shape of a Minidisc cartridge. The sensor can be inserted in a piece of MD equipment for laser power measurement without requiring any disassembly.

Abstract A laser power meter of the present invention including a laser power sensor and a power meter module is used for measuring the power level of a laser source in a minidisc recorder/player. The laser power sensor includes a photodetector and a variable resistor electrically connected together and housed in a cartridge-like housing that is equivalent in dimension to a minidisc used in the minidisc recorder/player. The laser power sensor is inserted into the minidisc recorder/player like a regular minidisc, thus allowing laser power readings without disassembling the recorder/player.

US06005659	Mini-disc laser power meter and method of making the same
Assignee	Sony Corporation
Assign./Filed	Dec. 21, 1999/ Dec. 15, 1998
Inventors	D'Alessandro; Louis D., Pinzavetsky; Izrail F.
Summary	MD Laser power meter with the sensor unit in the shape of a Minidisc cartridge. The sensor can be inserted in a piece of MD equipment for laser power measurement without requiring any disassembly.
Abstract	A laser power meter of the present invention including a laser power sensor and a power meter module is used for measuring the power level of a laser source in a minidisc recorder/player. The laser power sensor includes a photodetector and a variable resistor electrically connected together and housed in a cartridge-like housing that is equivalent in dimension to a minidisc used in the minidisc recorder/player. The laser power sensor is inserted into the minidisc recorder/player like a regular minidisc, thus allowing laser power readings without disassembling the recorder/player.