GB823130A - Improvements in prism lens systems - Google Patents

Improvements in prism lens systems

Info

Publication number
GB823130A
GB823130A GB10098/56A GB1009856A GB823130A GB 823130 A GB823130 A GB 823130A GB 10098/56 A GB10098/56 A GB 10098/56A GB 1009856 A GB1009856 A GB 1009856A GB 823130 A GB823130 A GB 823130A
Authority
GB
United Kingdom
Prior art keywords
prisms
objective
wedges
rotatable
crank
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
GB10098/56A
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.)
Kodak Ltd
Original Assignee
Kodak 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 Kodak Ltd filed Critical Kodak Ltd
Publication of GB823130A publication Critical patent/GB823130A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/08—Anamorphotic objectives
    • G02B13/10—Anamorphotic objectives involving prisms

Abstract

823,130. Optical systems. KODAK Ltd.. April 3, 1956 [March 31, 1955], No. 10098/56. Class 97(1) In a prism system in which the prisms are rotatable before an objective to vary the magnification a pair of colour dispersion wedges are rotatable in opposite directions in planes perpendicular to the optic axis of the objective to correct for the residual dispersion of the prisms. As shown in Fig. 1 an anamorphotic zoom prisms system 13 as described in Specification 823,129 is placed before an objective 14, the prisms in the system being rotated by a crank 15 to vary the magnification produced by the prisms. Before the system 13 are dispersive wedges 21, 22 each formed of two oppositely directed wedges cemented together, the wedges being simultaneously rotated about the optical axis 10 of a variable collimating lens 11 by a pinion 18 driven by suitable gearing from the crank 15 to reduce the resultant chromatic errors in the image. The anamorphose may comprise two prisms above rotatable before the objective and the wedges 21, 22 may be placed between the anamorphoser of the objective 14. The rear element 92 of the collimator may be cemented to the front wedge 21. Numerical data for one example are given and the theoretical basis of the invention is explained.
GB10098/56A 1955-03-31 1956-04-03 Improvements in prism lens systems Expired GB823130A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US823130XA 1955-03-31 1955-03-31

Publications (1)

Publication Number Publication Date
GB823130A true GB823130A (en) 1959-11-04

Family

ID=22170417

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10098/56A Expired GB823130A (en) 1955-03-31 1956-04-03 Improvements in prism lens systems

Country Status (1)

Country Link
GB (1) GB823130A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2253716A (en) * 1991-02-15 1992-09-16 Marconi Gec Ltd Thermal imager scanning system having optical anamorphic system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2253716A (en) * 1991-02-15 1992-09-16 Marconi Gec Ltd Thermal imager scanning system having optical anamorphic system
GB2253716B (en) * 1991-02-15 1994-02-09 Marconi Gec Ltd Thermal imager system having anamorphic optical system

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