JPS6317482U

JPS6317482U -

Info

Publication number: JPS6317482U
Application number: JP10897586U
Authority: JP
Priority date: 1986-07-16
Filing date: 1986-07-16
Publication date: 1988-02-05

Description

[Brief explanation of the drawing]

第１図はこの考案の測距装置の一実施例を示す
構成図、第２図は従来の測距装置の一実施例を示
す構成図、第３図はモードロツクレーザの出力パ
ルス光列を示す図であり、１はモードロツクレー
ザ発振器、２はビームスプリツタ、３は光路切替
鏡、４は送信光学系、５は受信光学系、６は光路
切替鏡、７は光検出器、８は同調回路、９は増幅
器、１０は周波数混合回路、１１は位相差測定回
路、１２は記憶回路、１３は光検出器、１４は同
調回路、１５は増幅器、１６は周波数混合回路、
１７は立上り検出器、１８はクロツク回路、１９
は局発回路である。なお図中同一あるいは相当部
分には同一の符号を付して示してある。 Fig. 1 is a block diagram showing an embodiment of the distance measuring device of this invention, Fig. 2 is a block diagram showing an embodiment of the conventional range measuring device, and Fig. 3 shows the output pulse light train of the Mordlock laser. 1 is a diagram showing a mode lock laser oscillator, 2 is a beam splitter, 3 is an optical path switching mirror, 4 is a transmitting optical system, 5 is a receiving optical system, 6 is an optical path switching mirror, 7 is a photodetector, and 8 is a A tuning circuit, 9 is an amplifier, 10 is a frequency mixing circuit, 11 is a phase difference measuring circuit, 12 is a storage circuit, 13 is a photodetector, 14 is a tuning circuit, 15 is an amplifier, 16 is a frequency mixing circuit,
17 is a rising edge detector, 18 is a clock circuit, 19
is the local oscillator circuit. In the drawings, the same or corresponding parts are denoted by the same reference numerals.

Claims

[Scope of utility model registration request]

a mode-lock laser oscillator; a beam splitter for guiding the output light of the mode-lock laser oscillator to a first photodetector; a first optical path switching mirror for switching between the optical system and the second optical path switching mirror; a transmission optical system for irradiating the target with the output light of the oscillator of the mode lock laser;
a receiving optical system for collecting the reflected light of the output light irradiated on the target; and a receiving optical system that converts the input light to the second photodetector into the light from the first optical path switching mirror and the light from the receiving optical system. a second optical path switching mirror for switching to the optical path; a second optical detector; a first tuning circuit for extracting the frequency of the pulse train of the mode-locked laser oscillator from the output of the second optical detector; , a first amplifier for amplifying the output of the first tuned circuit, a first frequency mixing circuit for generating a beat frequency of the output of this amplifier and the output of the local oscillator circuit, and the local oscillator circuit. and a second photodetector for detecting the output light of the mode-Lock laser oscillator guided by the beam splitter, and a pulse train of the mode-Lock laser oscillator from the output of the second photodetector. The second to extract the frequency of
a tuning circuit, a second amplifier for amplifying the output of the second tuning circuit, and a second frequency mixing circuit for generating the output of the second amplifier and the beat frequency of the local oscillator circuit. a rise detector for detecting the output rise of the first and second tuned circuits, a clock circuit for supplying a clock signal to the rise detector and the phase difference detection circuit, and the phase difference detection circuit and the phase difference measurement circuit. A distance measuring device configured with a memory circuit that stores and calculates the contents of.