JPS5933003U

JPS5933003U - light chiyotsupa

Info

Publication number: JPS5933003U
Application number: JP12882882U
Authority: JP
Inventors: 土肥　正二; 沢田　亮; 石崎　洋之
Original assignee: 富士通株式会社
Priority date: 1982-08-25
Filing date: 1982-08-25
Publication date: 1984-02-29

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は光パワー測定の系統図、第２図は従来の光チョ
ツパーの形状を示す図、第３図は光強度変化の時間依存
性を示す図、第４図は第２図の光チョツパーを用いた場
合のスペクトル、第５図は本考案に係る光チョツパーの
形状を示す図、第６図は第５図の光チョツパーを用いた
場合の光強度変化の時間依存性を示す図、第７図は第５
図の光チョツパーを用い場合のスペクトルを示す図であ
る。図において、１はロツクイン増幅器、２はレーザ、３は
光チョツパー、４はレンズ、５は受光素子をそれぞれ示
す。Figure 1 is a system diagram of optical power measurement, Figure 2 is a diagram showing the shape of a conventional optical chopper, Figure 3 is a diagram showing the time dependence of light intensity changes, and Figure 4 is the optical chopper of Figure 2. Fig. 5 is a diagram showing the shape of the optical chopper according to the present invention, Fig. 6 is a diagram showing the time dependence of light intensity change when using the optical chopper of Fig. 5, Figure 7 is the fifth
It is a figure which shows the spectrum when using the optical chopper of a figure. In the figure, 1 is a lock-in amplifier, 2 is a laser, 3 is an optical chopper, 4 is a lens, and 5 is a light receiving element.

Claims

[Scope of utility model registration request]

The width of the light-transmitting part or the light-blocking part of the light chopper for intermittent continuous light from a light source is set so that the light intensity passing through the light-transmitting part changes sinusoidally. A light chopper.