JPS5589802A - Projector - Google Patents

Projector

Info

Publication number
JPS5589802A
JPS5589802A JP16588578A JP16588578A JPS5589802A JP S5589802 A JPS5589802 A JP S5589802A JP 16588578 A JP16588578 A JP 16588578A JP 16588578 A JP16588578 A JP 16588578A JP S5589802 A JPS5589802 A JP S5589802A
Authority
JP
Japan
Prior art keywords
lenses
compound eye
lens system
projection lens
telecentric
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
JP16588578A
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 JP16588578A priority Critical patent/JPS5589802A/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 JPS5589802A publication Critical patent/JPS5589802A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To achieve the reduction in the conjugate distance of the projection lens system by determining the directions in the optical axis direction of the plural bar- form lenses which are respectively telecentric on the exit and incident sides by intermediate rings thereby forming the compound eye projection system lens.
CONSTITUTION: The compound eye projection lens system is constituted by the bar-form lenses 101..., 102... which are inserted into each of multiple pipes 103, are respectively provided with light absorbing layers 106 on the outer side and are telecentric to the exit and incident sides. Hence, the lenses 101, 102 are coaxial and have no eccentricity. External stray light is cut off by the light absorbing layers 106. The positions of the lenses 101, 102 in their optical axis direction are adjusted by the intermediate rings 107 of the lenses 101, 102 and the intermediate images by the lens 101, 102 are formed in the specified same position. If the 1st, 2nd radii of curvature, effective diameters, effective lengths, refractive indices, lateral magnifications, etc. of the lenses 101..., 102... are selected, the good projected image is formed by the compound eye projection lens system of a short conjugate distance and the miniaturization of the projection optical system may be accomplished.
COPYRIGHT: (C)1980,JPO&Japio
JP16588578A 1978-12-28 1978-12-28 Projector Pending JPS5589802A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP16588578A JPS5589802A (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
JP16588578A JPS5589802A (en) 1978-12-28 1978-12-28 Projector

Publications (1)

Publication Number Publication Date
JPS5589802A true JPS5589802A (en) 1980-07-07

Family

ID=15820819

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16588578A Pending JPS5589802A (en) 1978-12-28 1978-12-28 Projector

Country Status (1)

Country Link
JP (1) JPS5589802A (en)

Similar Documents

Publication Publication Date Title
US8616711B2 (en) Oblique projector having movable free form lenses
EP0332201A3 (en) Optical projection system
JP2001075023A5 (en)
JPS52117126A (en) Telephoto lens system
JPS5432319A (en) Fish eye lens
JPS57122413A (en) Zoom lens
JPS5397824A (en) Camera lens of behind iris
JP3431968B2 (en) Optical system of amphibious camera
JPS57173810A (en) Optical system of endoscope objective lens
JPS52130631A (en) Photographic lens of large aperture and super wide angle
JPS5589802A (en) Projector
JPS5648607A (en) Wide-angle zoom lens
JPS5655915A (en) Zoom lens
JP2001021803A5 (en) Zoom lens and camcorder
JPS5470826A (en) Wide-angle objective lens
JPS5567717A (en) Focusing method which prevents change in angle of view
JPS557712A (en) Compact standard zoom lens
JPS5589804A (en) Projector
JPS5589803A (en) Projector
JPS5782811A (en) Zoom lens
JPS55166632A (en) Finder for single-lens reflex camera
JPS6058449B2 (en) zoom lens for camera
JP4006046B2 (en) Imaging optics
JPS565518A (en) Optical correction type variable focal length lens system
JPS54123948A (en) Projector