JPH02110835U

JPH02110835U -

Info

Publication number: JPH02110835U
Application number: JP2035689U
Authority: JP
Priority date: 1989-02-23
Filing date: 1989-02-23
Publication date: 1990-09-05

Description

[Brief explanation of drawings]

第１図この考案に係る光検出器の分解斜視図、
第２図は同上におけるアルミナ基板と焦電体の分
解斜視図、第３図は同上の組立状態を示す拡大縦
断面図、第４図は従来の光検知器を示す分解斜視
図、第５図は同上に用いるアルミナ基板の斜視図
、第６図はアルミナ基板に焦電体を取付けた斜視
図、第７図は同上の正面図である。１１…リード端子、１２…ステム、１３…アル
ミナ基板、１４…焦電体、１５…キヤツプ、１６
…フイルタ、１８…表電極、１９…裏電極、２０
…貫通孔、２２…電極。 FIG. 1 is an exploded perspective view of a photodetector according to this invention.
Fig. 2 is an exploded perspective view of the alumina substrate and pyroelectric material in the same as above, Fig. 3 is an enlarged vertical cross-sectional view showing the assembled state of the same, Fig. 4 is an exploded perspective view of a conventional photodetector, and Fig. 5 6 is a perspective view of an alumina substrate used in the above, FIG. 6 is a perspective view of a pyroelectric material attached to the alumina substrate, and FIG. 7 is a front view of the same. 11...Lead terminal, 12...Stem, 13...Alumina substrate, 14...Pyroelectric material, 15...Cap, 16
...filter, 18...front electrode, 19...back electrode, 20
...Through hole, 22... Electrode.

Claims

[Scope of utility model registration request]

A light detection device in which a pyroelectric material is attached to the surface of an alumina substrate placed on a stem, a cap that covers the alumina substrate and the pyroelectric material is fitted onto the stem, and a filter is provided on the cap at a position facing the pyroelectric material. A light source characterized in that a through hole slightly smaller than the pyroelectric body is formed at the position where the pyroelectric body is attached to the alumina substrate in the device, and the pyroelectric body is directly attached to the surface of the alumina substrate so as to cover the through hole. Detector.