JPS5590917A - Projector - Google Patents

Projector

Info

Publication number
JPS5590917A
JPS5590917A JP16605478A JP16605478A JPS5590917A JP S5590917 A JPS5590917 A JP S5590917A JP 16605478 A JP16605478 A JP 16605478A JP 16605478 A JP16605478 A JP 16605478A JP S5590917 A JPS5590917 A JP S5590917A
Authority
JP
Japan
Prior art keywords
bar
projection
telecentric
block
optical system
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
JP16605478A
Other languages
Japanese (ja)
Inventor
Mitsuhiro Midorikawa
Atsuo Tsunoda
Hidetoshi Murase
Noritaka Mochizuki
Setsuo Minami
Yoshiya Matsui
Masazumi Moriwaki
Mikio Suzuta
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 JP16605478A priority Critical patent/JPS5590917A/en
Priority to DE2951452A priority patent/DE2951452A1/en
Priority to US06/105,789 priority patent/US4275962A/en
Priority to GB7944021A priority patent/GB2042759B/en
Priority to FR7931862A priority patent/FR2445544B1/en
Publication of JPS5590917A publication Critical patent/JPS5590917A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Lenses (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)

Abstract

PURPOSE: To obtain the high-performance projection optical system by specifically supoorting the specific bar-form lense groups with block materials in the projection system of the copying machine.
CONSTITUTION: The 1st bar-form lenses 101 being telecentric on the exit side and 2nd bar-form lens 102 being telecentric on the incident side, which have a uniform outside diameter and whose respective lengths in the optical axis direction are 2W60 times the effective diameter, are inserted into the through-holes of a block material 112 composed of metals or the like and are so fixed as to become perpendicularly coaxial to the object surface and projection surface. Intermediate field stops 104 are provided at the intermediate of the 1st, 2nd bar-form lenses 101, 102. As a result of this, the block bodies 112 perform lens holding and light shielding and the intermediate field stops 104 define the light intensity distributions on the projection surface, thus the projection optical system of superior optical performance is formed.
COPYRIGHT: (C)1980,JPO&Japio
JP16605478A 1978-12-28 1978-12-28 Projector Pending JPS5590917A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP16605478A JPS5590917A (en) 1978-12-28 1978-12-28 Projector
DE2951452A DE2951452A1 (en) 1978-12-28 1979-12-20 PROJECTION DEVICE
US06/105,789 US4275962A (en) 1978-12-28 1979-12-20 Projection device
GB7944021A GB2042759B (en) 1978-12-28 1979-12-21 Projection device
FR7931862A FR2445544B1 (en) 1978-12-28 1979-12-27 MULTIPLE OBJECTIVE PROJECTION DEVICE FOR COPY MACHINES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16605478A JPS5590917A (en) 1978-12-28 1978-12-28 Projector

Publications (1)

Publication Number Publication Date
JPS5590917A true JPS5590917A (en) 1980-07-10

Family

ID=15824101

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16605478A Pending JPS5590917A (en) 1978-12-28 1978-12-28 Projector

Country Status (1)

Country Link
JP (1) JPS5590917A (en)

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