JPS5512931A - Device for scanning light spot - Google Patents

Device for scanning light spot

Info

Publication number
JPS5512931A
JPS5512931A JP8560878A JP8560878A JPS5512931A JP S5512931 A JPS5512931 A JP S5512931A JP 8560878 A JP8560878 A JP 8560878A JP 8560878 A JP8560878 A JP 8560878A JP S5512931 A JPS5512931 A JP S5512931A
Authority
JP
Japan
Prior art keywords
light
mirrors
incident
mirror
light spot
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
JP8560878A
Other languages
Japanese (ja)
Inventor
Keiko Sanoki
Kazuo Nishi
Ikuyuki Miyazawa
Noriaki Tsukada
Kazunari Tomijima
Akio Ioka
Takayuki Hinooka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8560878A priority Critical patent/JPS5512931A/en
Publication of JPS5512931A publication Critical patent/JPS5512931A/en
Pending legal-status Critical Current

Links

Landscapes

  • Mechanical Optical Scanning Systems (AREA)

Abstract

PURPOSE:To enable scanning of a light spot at high speed by oppositely arranging two rotary polyhedral mirrors of the same construction through a lens system and synchronously rotating the mirrors in the same direction at a phase difference of pi/N. CONSTITUTION:First and second rotary polyhedral mirrors 4a, 4b of the same construction synchronously rotating in the same direction at a phase difference of pi/N(where N represents the number of divided mirror surfaces) are oppositely arranged through condenser lenses 9a, 9b. After light beam from a laser light source 1 is incident to a light modulation element 2 to thereby conduct an intensity modulation of the light, it is converted through a beam shaping lens 3 into a light beam 7 of predetermined beam width, and incident to one surface of the mirrors 4a. Thus, the reflected light 8 from the one surface of the mirrors 4a is passed through the condenser lenses 9a, 9b then incident to the mirror 4b. The reflected light 11 from the mirrors 4b is directed through a beam splitter 12 in predetermined direction, and condensed on a projecting surface 6 through a ftheta lens 5. Thus, light spot can be scanned twice via the reflected light while scanning on one surface of the first rotary polyhedral mirror.
JP8560878A 1978-07-12 1978-07-12 Device for scanning light spot Pending JPS5512931A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8560878A JPS5512931A (en) 1978-07-12 1978-07-12 Device for scanning light spot

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8560878A JPS5512931A (en) 1978-07-12 1978-07-12 Device for scanning light spot

Publications (1)

Publication Number Publication Date
JPS5512931A true JPS5512931A (en) 1980-01-29

Family

ID=13863536

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8560878A Pending JPS5512931A (en) 1978-07-12 1978-07-12 Device for scanning light spot

Country Status (1)

Country Link
JP (1) JPS5512931A (en)

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