Title:
SPECTROSCOPIC UNIT AND SPECTROSCOPIC MODULE
Document Type and Number:
Japanese Patent JP2021060249
Kind Code:
A
Abstract:
To provide a spectroscopic unit and a spectroscopic module which can improve the accuracy of spectroscopy by a Fabry-Perot interference filter.SOLUTION: A spectroscopic unit 100 comprises: a housing having a ceiling wall 6 in which an opening 2a is formed; a first aperture unit 71 in which a first aperture 80 is formed; and a second aperture unit 72 in which a second aperture 72a is formed. A length T2 of the second aperture 72a in a direction A is larger than a length T1 of the first aperture 80 in the direction A. When seen from the direction A, an outer edge 80d of the first aperture 80 is located inward of an outer edge of the opening 2a and an outer edge of the second aperture 72a. The first aperture 80 includes a first tapered portion 81 reaching a first surface 71a and expanding toward the first surface 71a and/or a second tapered portion 82 reaching a second surface 71b and expanding toward the second surface 71b.SELECTED DRAWING: Figure 8
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Inventors:
TABATA KATSURA
KURAMOTO YUMI
KURAMOTO YUMI
Application Number:
JP2019183873A
Publication Date:
April 15, 2021
Filing Date:
October 04, 2019
Export Citation:
Assignee:
HAMAMATSU PHOTONICS KK
International Classes:
G01J3/26; G02B5/28; G02B26/00
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
Kenichi Shibayama
Yoshiki Kuroki
Kenichi Shibayama