JPS6461720A - Laser beam condensing device - Google Patents

Laser beam condensing device

Info

Publication number
JPS6461720A
JPS6461720A JP62217922A JP21792287A JPS6461720A JP S6461720 A JPS6461720 A JP S6461720A JP 62217922 A JP62217922 A JP 62217922A JP 21792287 A JP21792287 A JP 21792287A JP S6461720 A JPS6461720 A JP S6461720A
Authority
JP
Japan
Prior art keywords
laser beam
lenses
ltheta
illumination
arranging
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
JP62217922A
Other languages
Japanese (ja)
Inventor
Toshio Yoshida
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 JP62217922A priority Critical patent/JPS6461720A/en
Publication of JPS6461720A publication Critical patent/JPS6461720A/en
Pending legal-status Critical Current

Links

Landscapes

  • Mechanical Optical Scanning Systems (AREA)
  • Laser Beam Processing (AREA)
  • Lasers (AREA)

Abstract

PURPOSE:To uniformize the distribution of intensity of illumination of an object to be radiated by arranging two orthogonally crossed cylindrical lenses, making the focal points of the respective lenses coincide with each other and arranging a beam scanner on the transmission path of a laser beam. CONSTITUTION:The laser beam 1a incident in a horizontal direction is condensed by the cylindrical lens 11 and turned to a vertical direction by the beam scanner, for instance, a polygon mirror 12. And it is converged on the cylindrical lens 3 which is orthogonally crossed with the lens 11. Since the focal points 4 and 13 of the lenses 3 and 11 are on the same position, the laser beam 1g becomes a small oval. And if the polygon mirror 12 is rotated, the reflected beam 1f is made to scan only circular arc ltheta by a deflection angle theta in the long axis direction of the oval. Since the long axis of the condensed beam is extremely shorter than the circular arc, that means, amplitude ltheta, the scanning beam 1g possesses the uniform distribution of intensity of illumination.
JP62217922A 1987-09-02 1987-09-02 Laser beam condensing device Pending JPS6461720A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62217922A JPS6461720A (en) 1987-09-02 1987-09-02 Laser beam condensing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62217922A JPS6461720A (en) 1987-09-02 1987-09-02 Laser beam condensing device

Publications (1)

Publication Number Publication Date
JPS6461720A true JPS6461720A (en) 1989-03-08

Family

ID=16711833

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62217922A Pending JPS6461720A (en) 1987-09-02 1987-09-02 Laser beam condensing device

Country Status (1)

Country Link
JP (1) JPS6461720A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007167936A (en) * 2005-12-26 2007-07-05 Miyachi Technos Corp Gold plating peeling method and gold plating peeling device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6193466A (en) * 1985-09-18 1986-05-12 Canon Inc Recording optical system
JPS6136821B2 (en) * 1981-03-23 1986-08-20 Toray Industries
JPS62203116A (en) * 1986-03-01 1987-09-07 Hitachi Seiki Co Ltd Laser light irradiating device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6136821B2 (en) * 1981-03-23 1986-08-20 Toray Industries
JPS6193466A (en) * 1985-09-18 1986-05-12 Canon Inc Recording optical system
JPS62203116A (en) * 1986-03-01 1987-09-07 Hitachi Seiki Co Ltd Laser light irradiating device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007167936A (en) * 2005-12-26 2007-07-05 Miyachi Technos Corp Gold plating peeling method and gold plating peeling device

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