US 12,467,787 B2
Light detection device
Masaki Hirose, Hamamatsu (JP); Katsumi Shibayama, Hamamatsu (JP); Takashi Kasahara, Hamamatsu (JP); Toshimitsu Kawai, Hamamatsu (JP); Hiroki Oyama, Hamamatsu (JP); and Yumi Teramachi, Hamamatsu (JP)
Assigned to HAMAMATSU PHOTONICS K.K., Shizuoka (JP)
Filed by HAMAMATSU PHOTONICS K.K., Hamamatsu (JP)
Filed on Sep. 27, 2023, as Appl. No. 18/373,532.
Application 16/843,244 is a division of application No. 15/764,943, granted, now 10,656,020, issued on May 19, 2020, previously published as PCT/JP2016/078476, filed on Sep. 27, 2016.
Application 18/373,532 is a continuation of application No. 16/843,244, filed on Apr. 8, 2020, granted, now 11,835,388.
Claims priority of application No. 2015-196516 (JP), filed on Oct. 2, 2015; and application No. 2016-109495 (JP), filed on May 31, 2016.
Prior Publication US 2024/0019304 A1, Jan. 18, 2024
Int. Cl. G01J 3/26 (2006.01); G01J 3/02 (2006.01); G01J 5/0802 (2022.01); G01J 5/20 (2006.01); G02B 26/00 (2006.01); G02F 1/21 (2006.01); H10F 77/00 (2025.01); H10F 77/124 (2025.01); H10F 77/40 (2025.01); H10F 77/50 (2025.01); G01J 5/04 (2006.01); H10N 15/10 (2023.01)
CPC G01J 3/26 (2013.01) [G01J 3/0213 (2013.01); G01J 3/0256 (2013.01); G01J 3/0291 (2013.01); G01J 5/0802 (2022.01); G01J 5/20 (2013.01); G02B 26/00 (2013.01); G02F 1/21 (2013.01); H10F 77/1248 (2025.01); H10F 77/413 (2025.01); H10F 77/50 (2025.01); H10F 77/933 (2025.01); G01J 5/045 (2013.01); G02F 1/213 (2021.01); H10N 15/10 (2023.02)] 17 Claims
OG exemplary drawing
 
1. A filter device, comprising:
a Fabry-Perot interference filter having a first mirror and a second mirror, a distance therebetween is variable, and provided with a light transmission region on a predetermined line, the light transmission region configured to transmit light corresponding to the distance between the first mirror and the second mirror;
a package having an opening positioned on a one side of the Fabry-Perot interference filter on the line, the package configured to accommodate the Fabry-Perot interference filter;
a light transmitting unit including a band pass filter configured to transmit light incident on the light transmission region via the opening; and
a bonding member fixing the light transmitting unit to an inner surface of the package,
wherein, when viewed from a direction parallel to the line, an outer edge of the Fabry-Perot interference filter is positioned outside an outer edge of the opening, and an outer edge of the light transmitting unit is positioned outside the outer edge of the Fabry-Perot interference filter, and
the bonding member includes a part protruding outward from the outer edge of the light transmitting unit when viewed from a direction parallel to the line, and covers a partial region of a light emitting surface of the light transmitting unit.