JPS5612661A - Lighting optical device of copying apparatus - Google Patents

Lighting optical device of copying apparatus

Info

Publication number
JPS5612661A
JPS5612661A JP8749779A JP8749779A JPS5612661A JP S5612661 A JPS5612661 A JP S5612661A JP 8749779 A JP8749779 A JP 8749779A JP 8749779 A JP8749779 A JP 8749779A JP S5612661 A JPS5612661 A JP S5612661A
Authority
JP
Japan
Prior art keywords
illuminance
filaments
cold
reflectors
joints
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
JP8749779A
Other languages
Japanese (ja)
Other versions
JPH0127408B2 (en
Inventor
Hiroyuki Idenawa
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP8749779A priority Critical patent/JPS5612661A/en
Publication of JPS5612661A publication Critical patent/JPS5612661A/en
Publication of JPH0127408B2 publication Critical patent/JPH0127408B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Light Sources And Details Of Projection-Printing Devices (AREA)

Abstract

PURPOSE: To provide an apparatus free from any uneven illuminance by dividing cold reflectors in plurality respectively in a longitudinal direction, joining them together and arraying these in such a manner that the joints do not align to a light source.
CONSTITUTION: For example, four cold reflectors 2a, 2b, 2c, 2d are joined together to form the 1st cold reflector 2 and three cold reflectors 3a, 3b, 3c are joined together to form the 2nd cold reflector 3. A halogen lamp 1 has multiple filaments 1a; the portions thereof opposing to the portions of the filaments are high in illuminance, but the portions opposing to those between the filaments 1a is low in illuminance, thus, at a whole it assumes the illuminance distribution of waveforms. Thereupon, if the cold reflectors 2a, 2b, 2c, 2d are so disposed that the joints between these and the joints between 3a, 3b, 3c come to the intermediate positions of the filaments 1a and the filaments 1a of respectively small illuminance, the unevenness in illuminance does not occur.
COPYRIGHT: (C)1981,JPO&Japio
JP8749779A 1979-07-12 1979-07-12 Lighting optical device of copying apparatus Granted JPS5612661A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8749779A JPS5612661A (en) 1979-07-12 1979-07-12 Lighting optical device of copying apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8749779A JPS5612661A (en) 1979-07-12 1979-07-12 Lighting optical device of copying apparatus

Publications (2)

Publication Number Publication Date
JPS5612661A true JPS5612661A (en) 1981-02-07
JPH0127408B2 JPH0127408B2 (en) 1989-05-29

Family

ID=13916598

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8749779A Granted JPS5612661A (en) 1979-07-12 1979-07-12 Lighting optical device of copying apparatus

Country Status (1)

Country Link
JP (1) JPS5612661A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58163950U (en) * 1982-04-28 1983-11-01 ウシオ電機株式会社 Original illumination device
JPS59167957U (en) * 1983-04-26 1984-11-10 日産自動車株式会社 distribution type fuel injection pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58163950U (en) * 1982-04-28 1983-11-01 ウシオ電機株式会社 Original illumination device
JPS59167957U (en) * 1983-04-26 1984-11-10 日産自動車株式会社 distribution type fuel injection pump
JPH0114758Y2 (en) * 1983-04-26 1989-04-28

Also Published As

Publication number Publication date
JPH0127408B2 (en) 1989-05-29

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