JPS5589803A - Projector - Google Patents

Projector

Info

Publication number
JPS5589803A
JPS5589803A JP16588678A JP16588678A JPS5589803A JP S5589803 A JPS5589803 A JP S5589803A JP 16588678 A JP16588678 A JP 16588678A JP 16588678 A JP16588678 A JP 16588678A JP S5589803 A JPS5589803 A JP S5589803A
Authority
JP
Japan
Prior art keywords
bar
optical system
pair
projection optical
form 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.)
Pending
Application number
JP16588678A
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 JP16588678A priority Critical patent/JPS5589803A/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 JPS5589803A publication Critical patent/JPS5589803A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To make the manufacture of the projection apparatus of a small size and bright images by fitting two sets a pair of the specified bar-form lenses of a large outside diameter of the end part into the pipe holes of block materials thereby forming the compound eye projection optical system.
CONSTITUTION: A stepped bar-form lens 108 which is provided with light absorbing layers 106, 110 on the outer side and whose end parts are larger in outside diameter than fitting part and a stepped bar-form lens 109 similar to this as a pair are inserted into each pipe hole provided with a mask 104 for forming intermediate image of a block 112, whereby the compound eye projection optical system is formed. Hence, the conjugate distance is made short via the intermediate images corresponding to the respective parts of the object by the bar-form lens pair groups of the same optical axis of selected radii of curvature of both surfaces, effective diameters, effective lengths, refractive indices, etc., whereby the projection optical system of bright projection images and a small size is readily manufactured.
COPYRIGHT: (C)1980,JPO&Japio
JP16588678A 1978-12-28 1978-12-28 Projector Pending JPS5589803A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP16588678A JPS5589803A (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
JP16588678A JPS5589803A (en) 1978-12-28 1978-12-28 Projector

Publications (1)

Publication Number Publication Date
JPS5589803A true JPS5589803A (en) 1980-07-07

Family

ID=15820837

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16588678A Pending JPS5589803A (en) 1978-12-28 1978-12-28 Projector

Country Status (1)

Country Link
JP (1) JPS5589803A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008115990A (en) * 2006-11-07 2008-05-22 Hitachi Constr Mach Co Ltd Hydraulic drive mechanism for construction machine
JP2010128277A (en) * 2008-11-28 2010-06-10 Oki Data Corp Lens array unit, optical head and information apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008115990A (en) * 2006-11-07 2008-05-22 Hitachi Constr Mach Co Ltd Hydraulic drive mechanism for construction machine
JP2010128277A (en) * 2008-11-28 2010-06-10 Oki Data Corp Lens array unit, optical head and information apparatus

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