Light emitting device, fiber laser, and ground fault determination method

Title:

Light emitting device, fiber laser, and ground fault determination method

Document Type and Number:

Japanese Patent JP6351696

Kind Code:

B2

Abstract:

Provided is a light-emitting device capable of determining, in an unlit state, whether or not a ground fault has occurred, the determination not requiring the use of a shunt resistance. This light-emitting device (1) comprises: a current path (11) including a plurality of laser diodes (LD1 to LD6) and a power source (PS) provided upstream therefrom; and an LD control unit (13) determining whether or not a ground fault has occurred on the basis of an end-to-end voltage (VPQ) from a section containing the laser diode (LD1).

Inventors:

Takashi Kameyama

Application Number:

JP2016239552A

Publication Date:

July 04, 2018

Filing Date:

December 09, 2016

Export Citation:

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