| 摘要 |
PROBLEM TO BE SOLVED: To provide a spectroscope capable of reducing locational deviations which occur in a grating even in the case that distortion has occurred in a package. SOLUTION: The spectroscope 1 disperses light L1 incident into the package 2 by a spectroscopic part 3, reflects it, detects reflected light L2 by a photo-detection element 4, and is provided with the package 2 housing the photo-detection element 4. The package 2 has a hemispheric recession part 10, and a region 12 in which a plurality of grating grooves 14 are arranged along a prescribed direction and a region 13 surrounding the region 12 are formed in the bottom surface of the recession part 10. The region 12 and the region 13 are continuous to each other and formed in the same curved surface. COPYRIGHT: (C)2010,JPO&INPIT
|
