GB190705504A - Improvements in Kinematographic Objectives and the like for Wide Angle Work. - Google Patents

Improvements in Kinematographic Objectives and the like for Wide Angle Work.

Info

Publication number
GB190705504A
GB190705504A GB190705504DA GB190705504A GB 190705504 A GB190705504 A GB 190705504A GB 190705504D A GB190705504D A GB 190705504DA GB 190705504 A GB190705504 A GB 190705504A
Authority
GB
United Kingdom
Prior art keywords
achromatic
wide angle
lenses
lens
focal length
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.)
Expired
Application number
Inventor
Robert Alfred Ives
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB190705504A publication Critical patent/GB190705504A/en
Expired legal-status Critical Current

Links

Landscapes

  • Lenses (AREA)

Abstract

5504. Ives, R. A. Oct. 7. Kinematographs; optical projection apparatics.- In using projection lenses working without stops and collecting a convergent beam from a lantern condenser, a wide angle of picture is obtained by bringing the light to a focus sooner, either by separating the back from the ,frout member a distance equal to at least half the-focal length of the front member, or by making the power of the back member large compared with that of the front combination. Fig. 6 shows a lens in which the separation is about two-thirds the focal length of the front member a, and both members o., b are achromatic with their plane surfaces r', r<6> outwards. In Fig. 7 a lens is shown consisting of a reversed Petzval c, d with one or more positive achromatic combinations e, f, having their plane faces r<10>, r<13> towards the film, interposed between it and the film. The achromatic lenses consist of dense flint and hard crown glasses. Particulars of the lenses used are given.
GB190705504D 1907-10-07 1907-10-07 Improvements in Kinematographic Objectives and the like for Wide Angle Work. Expired GB190705504A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190705504T 1907-10-07

Publications (1)

Publication Number Publication Date
GB190705504A true GB190705504A (en) 1908-09-17

Family

ID=32547566

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190705504D Expired GB190705504A (en) 1907-10-07 1907-10-07 Improvements in Kinematographic Objectives and the like for Wide Angle Work.

Country Status (1)

Country Link
GB (1) GB190705504A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3164058A (en) * 1960-12-01 1965-01-05 Columbia Broadcasting Syst Inc Film projector and optical system therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3164058A (en) * 1960-12-01 1965-01-05 Columbia Broadcasting Syst Inc Film projector and optical system therefor

Similar Documents

Publication Publication Date Title
US1539579A (en) Optical device for compensating the movement of the film in cinematograph apparatus
GB190705504A (en) Improvements in Kinematographic Objectives and the like for Wide Angle Work.
GB190929282A (en) Improved Optical System for use with and also as a Substitute for Objectives.
US1620339A (en) Projection objective
US881127A (en) Instrument for optically measuring distances.
US2098767A (en) Double simultaneous motion picture apparatus
US2043916A (en) Optical system
US198914A (en) Improvement in object-glasses for microscopes
US1098823A (en) Photographic objective.
US801935A (en) Lens.
US1073950A (en) Photographic lens.
US1897874A (en) Optical system
US1053128A (en) Lens system.
GB191103399A (en) Improvement in Photographic Lenses.
US1641674A (en) Lens
US785851A (en) Reflecting-lantern.
GB190827793A (en) A Photographic Objective of Triangular Prismatic Form, allowing several Images of the same Object to be Produced Simultaneously.
FR410263A (en) Advanced lens for optical instruments
GB191104714A (en) Improvements in Photographic Lenses.
GB191306328A (en) Improvements in Photographic Objectives.
GB190521909A (en) Improvements in or relating to Photographic Cameras
GB191102619A (en) Improvements in Lenses for Projection and Photography.
US873896A (en) Double objective.
GB299733A (en) Improvements in or relating to stereoscopic photography
US1140010A (en) Optical instrument especially applicable to range-finders.