JPS5569110A - Optical device for cinemascope - Google Patents
Optical device for cinemascopeInfo
- 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
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
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) |
-
1978
- 1978-11-17 JP JP14246278A patent/JPS5569110A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS52117126A (en) | Telephoto lens system | |
JPS5528038A (en) | Lens system for close distance photographing | |
JPS5391756A (en) | Zoom lens system | |
JPS55101908A (en) | Wide angle door scope | |
JPS52153752A (en) | Wide angle zoom lens | |
JPS5411727A (en) | Telephoto lens | |
JPS53112759A (en) | Microscope objective lens | |
JPS5397824A (en) | Camera lens of behind iris | |
JPS5432318A (en) | Lens for micro-reduction photography | |
JPS56107209A (en) | Photographic lens of large aperture ratio corrected for short distance | |
JPS5232323A (en) | Front iris large aperture ratio lens | |
JPS53127722A (en) | Anamorphic lens | |
JPS5417042A (en) | Wide-angle zoom lens | |
JPS52130631A (en) | Photographic lens of large aperture and super wide angle | |
JPS5569110A (en) | Optical device for cinemascope | |
JPS53112760A (en) | Wide field microscopic objective lens | |
JPS5784417A (en) | Optical system for focal length conversion | |
JPS5323645A (en) | Zoom lens capable of easy transfer for focal distance range | |
JPS53110822A (en) | Photographic lens | |
JPS53135657A (en) | Eye lens in eyepiece system | |
JPS5310446A (en) | Eye piece lens for microphotography | |
JPS552215A (en) | Optical system | |
JPS5694318A (en) | Lens system provided with rear converter lens | |
JPS5432317A (en) | Lens for micro-reduction photography | |
JPS5297750A (en) | Objective lens of medium power |