JPS5569110A - Optical device for cinemascope - Google Patents

Optical device for cinemascope

Info

Publication number
JPS5569110A
JPS5569110A JP14246278A JP14246278A JPS5569110A JP S5569110 A JPS5569110 A JP S5569110A JP 14246278 A JP14246278 A JP 14246278A JP 14246278 A JP14246278 A JP 14246278A JP S5569110 A JPS5569110 A JP S5569110A
Authority
JP
Japan
Prior art keywords
lens
lenses
concave
convex
plastic material
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
JP14246278A
Other languages
Japanese (ja)
Inventor
Minoru Hashiya
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.)
SHINANO KIKAKU KK
SHINANO KIKAKU CO Ltd
Original Assignee
SHINANO KIKAKU KK
SHINANO KIKAKU 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 SHINANO KIKAKU KK, SHINANO KIKAKU CO Ltd filed Critical SHINANO KIKAKU KK
Priority to JP14246278A priority Critical patent/JPS5569110A/en
Priority to US06/194,297 priority patent/US4426135A/en
Priority to PCT/JP1979/000003 priority patent/WO1979001091A1/en
Priority to CH54280A priority patent/CH640951A5/en
Priority to DE2950515A priority patent/DE2950515C1/en
Priority to GB8001968A priority patent/GB2043942B/en
Priority to AT0370979A priority patent/AT384114B/en
Priority to IT7968078A priority patent/IT1147800B/en
Priority to EP79900134A priority patent/EP0016227B1/en
Publication of JPS5569110A publication Critical patent/JPS5569110A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To achieve the reduction in the size and weight of the device and make assembling and adjustment easy by forming cylindrical front- and rear group lenses by optical plastic material and providing the concave and convex parts fitting to the convex or concave parts of both edges of the inside lens barrel.
CONSTITUTION: Cylindrical front group lens 1 and rear group lens 2 which are to be installed in front of a master lens 3 and have magnifying power only in one direction are formed by plastic material. The focal lengths of the lenses 2 and lens 3 are so selected as to satisfy the required relations and the lens 2 and lens 3 may be miniaturized until they become of approximately the same diameter. The convex parts 10, 11 are respectively provided to the lenses 1, 2 and fit to the concave parts 20, 21 provided to the front and rear edges of the inside lens barrel 17 coupling the lenses 1, 2, by which the cylindrical generator of the lenses 1, 2 is determined. This constitution reduces the weight and size of the optical device and permits its easy assembling and adjustment.
COPYRIGHT: (C)1980,JPO&Japio
JP14246278A 1978-05-22 1978-11-17 Optical device for cinemascope Pending JPS5569110A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
JP14246278A JPS5569110A (en) 1978-11-17 1978-11-17 Optical device for cinemascope
US06/194,297 US4426135A (en) 1978-05-22 1979-01-05 Lens attchment for forming wide-ranging images
PCT/JP1979/000003 WO1979001091A1 (en) 1978-05-22 1979-01-05 Optical device for wide-scope
CH54280A CH640951A5 (en) 1978-05-22 1979-01-05 ACCESSORY UNIT FOR FIXING ON A LENS.
DE2950515A DE2950515C1 (en) 1978-05-22 1979-01-05 Attachment lens for optical devices
GB8001968A GB2043942B (en) 1978-05-22 1979-01-05 Optical device for wide-scope
AT0370979A AT384114B (en) 1978-05-22 1979-05-21 LENS SET FOR BROADBAND PROJECTION
IT7968078A IT1147800B (en) 1978-05-22 1979-05-21 ADDITIONAL OBJECTIVE FOR THE FORMATION OF ENLARGED IMAGES
EP79900134A EP0016227B1 (en) 1978-05-22 1979-12-17 Anamorphote wide-angle lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14246278A JPS5569110A (en) 1978-11-17 1978-11-17 Optical device for cinemascope

Publications (1)

Publication Number Publication Date
JPS5569110A true JPS5569110A (en) 1980-05-24

Family

ID=15315870

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14246278A Pending JPS5569110A (en) 1978-05-22 1978-11-17 Optical device for cinemascope

Country Status (1)

Country Link
JP (1) JPS5569110A (en)

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