JPS5484723A - Lighting device - Google Patents

Lighting device

Info

Publication number
JPS5484723A
JPS5484723A JP15277477A JP15277477A JPS5484723A JP S5484723 A JPS5484723 A JP S5484723A JP 15277477 A JP15277477 A JP 15277477A JP 15277477 A JP15277477 A JP 15277477A JP S5484723 A JPS5484723 A JP S5484723A
Authority
JP
Japan
Prior art keywords
mirror
original
exposure
exposure part
optical
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
JP15277477A
Other languages
Japanese (ja)
Inventor
Seiji Sagara
Hiroyuki Miyake
Hiroshi Ogawa
Hirotoshi Kishi
Kazumi Umezawa
Yutaka Hara
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP15277477A priority Critical patent/JPS5484723A/en
Publication of JPS5484723A publication Critical patent/JPS5484723A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)

Abstract

PURPOSE: To light the original exposure face more brightly and more evenly with less power consumption by letting at least one mirror of an optical projecting means serve also as a lighting reflecting mirror for directing light from a light source to original stage.
CONSTITUTION: A mirror 44 which constitutes the optical exposure means acts to form the original images reflected from the exposure part S of an original stage 5 to a photoreceptor. This is the device of letting the mirror of the optical exposure means also serve as a lighting reflecting plate by making said mirror 44 slightly largely and directing the parallel luminous flux enclosed by the straight lines g1, g2 formed by a lamp 42 and condensing mirror 43a to the exposure part S by the mirror 44. These enable the distance between the virtual image light source 41' and exposure part S to be shorted and yet the original exposure face to be lighted nearly perpendicularly, thereby making it possible to increase the illuminance of the exposure part S and form the images faithful to the original.
COPYRIGHT: (C)1979,JPO&Japio
JP15277477A 1977-12-19 1977-12-19 Lighting device Pending JPS5484723A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15277477A JPS5484723A (en) 1977-12-19 1977-12-19 Lighting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15277477A JPS5484723A (en) 1977-12-19 1977-12-19 Lighting device

Publications (1)

Publication Number Publication Date
JPS5484723A true JPS5484723A (en) 1979-07-05

Family

ID=15547844

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15277477A Pending JPS5484723A (en) 1977-12-19 1977-12-19 Lighting device

Country Status (1)

Country Link
JP (1) JPS5484723A (en)

Similar Documents

Publication Publication Date Title
JPS5231736A (en) Ttl light measure device for single lens reflex camera
JPS5484723A (en) Lighting device
JPS57161764A (en) Original lighting device of copying machine or the like
JPS52132851A (en) Optical detector of scanning type
JPS5442129A (en) Lighting device for copier
JPS5414746A (en) Illuninating light source device
JPS55125765A (en) Read-in unit
JPS538012A (en) Facsimile trnsmission unit
JPS5445124A (en) Lighting unit for copier
JPS52100775A (en) Fluorescent lamp
JPS5646263A (en) Original lighting device of electronic copying machine
JPS55144228A (en) Full surface exposure device
JPS5383621A (en) Control mechanism for intensity of illumination on the focal plane
JPS5785019A (en) Lighting device
JPS5592072A (en) Photoelectric conversion unit
JPS5351731A (en) Illuminating device
JPS5419736A (en) Illuminator for slit exposure of copying machine
JPS52132576A (en) Lighting fixture cover
JPS5677865A (en) Optical reflection system
JPS5726841A (en) Scanning illumination device
JPS5496040A (en) Original light device in copying machine having original read function
JPS5263734A (en) Illumination device
JPS6437837A (en) Semiconductor exposure device
JPS5386110A (en) Light volume adjusting mechanism of facsimile device
JPS53106118A (en) Lens iris for optical system