JPS53132361A - Optical device - Google Patents

Optical device

Info

Publication number
JPS53132361A
JPS53132361A JP4682577A JP4682577A JPS53132361A JP S53132361 A JPS53132361 A JP S53132361A JP 4682577 A JP4682577 A JP 4682577A JP 4682577 A JP4682577 A JP 4682577A JP S53132361 A JPS53132361 A JP S53132361A
Authority
JP
Japan
Prior art keywords
optical device
light beams
diameter
decreasing
lens
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.)
Granted
Application number
JP4682577A
Other languages
Japanese (ja)
Other versions
JPS5935003B2 (en
Inventor
Hiroshi Yamaguchi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP52046825A priority Critical patent/JPS5935003B2/en
Publication of JPS53132361A publication Critical patent/JPS53132361A/en
Publication of JPS5935003B2 publication Critical patent/JPS5935003B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE:To reduce the condensing spot diameter by a lens by reducing the product of the spreading angle of light beams and beam diameter without decreasing the power of the light beams by using a polarized beam spitter and a 1/2 wavelength plate.
JP52046825A 1977-04-25 1977-04-25 optical equipment Expired JPS5935003B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52046825A JPS5935003B2 (en) 1977-04-25 1977-04-25 optical equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52046825A JPS5935003B2 (en) 1977-04-25 1977-04-25 optical equipment

Publications (2)

Publication Number Publication Date
JPS53132361A true JPS53132361A (en) 1978-11-18
JPS5935003B2 JPS5935003B2 (en) 1984-08-25

Family

ID=12758094

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52046825A Expired JPS5935003B2 (en) 1977-04-25 1977-04-25 optical equipment

Country Status (1)

Country Link
JP (1) JPS5935003B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60172022A (en) * 1984-02-17 1985-09-05 Dainippon Screen Mfg Co Ltd Exposing method of laser light beam
US4634232A (en) * 1983-02-01 1987-01-06 Canon Kabushiki Kaisha Light source device for close spacing of two light beams
US4641920A (en) * 1983-03-11 1987-02-10 Canon Kabushiki Kaisha Optical element having the function of changing the cross-sectional intensity distribution of a light beam
US5381278A (en) * 1991-05-07 1995-01-10 Canon Kabushiki Kaisha Polarization conversion unit, polarization illumination apparatus provided with the unit, and projector provided with the apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107052592B (en) * 2017-05-23 2019-01-29 苏州德龙激光股份有限公司 Double light beam laser system of processing and its method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4634232A (en) * 1983-02-01 1987-01-06 Canon Kabushiki Kaisha Light source device for close spacing of two light beams
US4641920A (en) * 1983-03-11 1987-02-10 Canon Kabushiki Kaisha Optical element having the function of changing the cross-sectional intensity distribution of a light beam
JPS60172022A (en) * 1984-02-17 1985-09-05 Dainippon Screen Mfg Co Ltd Exposing method of laser light beam
US5381278A (en) * 1991-05-07 1995-01-10 Canon Kabushiki Kaisha Polarization conversion unit, polarization illumination apparatus provided with the unit, and projector provided with the apparatus

Also Published As

Publication number Publication date
JPS5935003B2 (en) 1984-08-25

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