LIGHT EMITTING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a light emitting device which can be miniaturized while providing a light detection element to a mounting substrate.

SOLUTION: The device has an LED chip (LED) 1 and a mounting substrate 2 wherein a housing recess portion 2a for housing the LED chip 1 is formed in one surface and the LED chip 1 is mounted on an inner bottom surface of the housing recess portion 2a. The mounting substrate 2 has a projection part 2c projecting inward from a circumferential part of the housing recess portion 2a, and the projection part 2c is provided with a light detecting element 4 which detects light emitted from the LED chip 1.

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