JPS57122371A - Optical system receiving laser beam - Google Patents

Optical system receiving laser beam

Info

Publication number
JPS57122371A
JPS57122371A JP887281A JP887281A JPS57122371A JP S57122371 A JPS57122371 A JP S57122371A JP 887281 A JP887281 A JP 887281A JP 887281 A JP887281 A JP 887281A JP S57122371 A JPS57122371 A JP S57122371A
Authority
JP
Japan
Prior art keywords
submirror
optical path
reflected
main mirror
focal point
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP887281A
Other languages
Japanese (ja)
Inventor
Takayasu Fukuda
Hirobumi Kashiwara
Yoshio Matsuura
Tadatami Mori
Masami Tajima
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP887281A priority Critical patent/JPS57122371A/en
Publication of JPS57122371A publication Critical patent/JPS57122371A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481Constructional features, e.g. arrangements of optical elements

Abstract

PURPOSE:To vary the incidence optical axis of a receiving telescope of a laser radar comprising a main mirror and a submirror by a slight angle as desired by enabling the submirror alone to slide at the right to the incidence angle. CONSTITUTION:The solid line (a) indicates the optical path where there is no offset angle to be formed by the optical path of a transmitting telescope and the optical path of a receiving telescope and light coming along the solid line (a) is reflected on a main mirror 1 and condensed at the focal point P1. A submirror 3 is positioned at the point 3a so that the focal point of the submirror 3 coincides with the focal point P1. Light reflected on the main mirror 1 is reflected on the concave surface of the submirror 3 and led to a beam splitter 2 passing through the optical path as indicated by the solid line (b) with which it is mixed with a locally oscillated beam along the optical path (e) for heterodyne detection. When an off-set is generated at an angle alpha, light coming along the optical path (c) is reflected on the main mirror 1 and condensed at the focal point P2. Therefore, the submirror 3 is moved to the point 3b in the direction of the arrow (f) so that the reflected light from the submirror 3 can be led to the splitter 2.
JP887281A 1981-01-22 1981-01-22 Optical system receiving laser beam Pending JPS57122371A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP887281A JPS57122371A (en) 1981-01-22 1981-01-22 Optical system receiving laser beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP887281A JPS57122371A (en) 1981-01-22 1981-01-22 Optical system receiving laser beam

Publications (1)

Publication Number Publication Date
JPS57122371A true JPS57122371A (en) 1982-07-30

Family

ID=11704769

Family Applications (1)

Application Number Title Priority Date Filing Date
JP887281A Pending JPS57122371A (en) 1981-01-22 1981-01-22 Optical system receiving laser beam

Country Status (1)

Country Link
JP (1) JPS57122371A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102323663A (en) * 2011-10-18 2012-01-18 中国工程物理研究院应用电子学研究所 Laser radar signal receiving off-axis spherical reflection focusing optical system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102323663A (en) * 2011-10-18 2012-01-18 中国工程物理研究院应用电子学研究所 Laser radar signal receiving off-axis spherical reflection focusing optical system

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