GB1173962A - Improvements in Optical Profile Projection Systems - Google Patents

Improvements in Optical Profile Projection Systems

Info

Publication number
GB1173962A
GB1173962A GB1192767A GB1192767A GB1173962A GB 1173962 A GB1173962 A GB 1173962A GB 1192767 A GB1192767 A GB 1192767A GB 1192767 A GB1192767 A GB 1192767A GB 1173962 A GB1173962 A GB 1173962A
Authority
GB
United Kingdom
Prior art keywords
components
projection systems
march
varied
pairs
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
GB1192767A
Inventor
David Demaine
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.)
Hilger and Watts Ltd
Original Assignee
Hilger and Watts 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 Hilger and Watts Ltd filed Critical Hilger and Watts Ltd
Priority to GB1192767A priority Critical patent/GB1173962A/en
Priority to CH371768A priority patent/CH471370A/en
Publication of GB1173962A publication Critical patent/GB1173962A/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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B21/00—Microscopes
    • G02B21/0004—Microscopes specially adapted for specific applications
    • G02B21/0016—Technical microscopes, e.g. for inspection or measuring in industrial production processes

Abstract

1,173,962. Profile projection systems. HILGER & WATTS Ltd. March 6, 1968 [March 14, 1967], No.11927/67. Heading G2J. In order to avoid the necessity of mounting large or heavy objects for movement towards and away from a profile projector, the latter has a lens system comprising a compound lens whose components are so arranged that they may be adjusted in position so that the distance between the object and image planes may be varied without change of magnification. As shown two pairs of components A, B, and A<SP>1</SP>, B<SP>1</SP> are arranged on opposite sides of a negative field flattening member C, C<SP>1</SP>, the back focal plane of A, B, coinciding with the front focal plane of A<SP>1</SP>, B<SP>1</SP> to render the system afocal. Since the combined power of a pair of lenses is a simple function of their two powers and their distance apart, the separation of the object and image planes may be varied by symmetrically altering the separation between the components of the pairs A, B and A<SP>1</SP>, B<SP>1</SP> by moving A and A<SP>1</SP> outwardly and adjusting B and B<SP>1</SP> to maintain the system afocal.
GB1192767A 1967-03-14 1967-03-14 Improvements in Optical Profile Projection Systems Expired GB1173962A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1192767A GB1173962A (en) 1967-03-14 1967-03-14 Improvements in Optical Profile Projection Systems
CH371768A CH471370A (en) 1967-03-14 1968-03-12 Optical system, in particular for a profile projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1192767A GB1173962A (en) 1967-03-14 1967-03-14 Improvements in Optical Profile Projection Systems

Publications (1)

Publication Number Publication Date
GB1173962A true GB1173962A (en) 1969-12-10

Family

ID=9995205

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1192767A Expired GB1173962A (en) 1967-03-14 1967-03-14 Improvements in Optical Profile Projection Systems

Country Status (2)

Country Link
CH (1) CH471370A (en)
GB (1) GB1173962A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3728010A (en) * 1969-09-08 1973-04-17 Ricoh Kk Variable-magnifying-power symmetrical lens system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3728010A (en) * 1969-09-08 1973-04-17 Ricoh Kk Variable-magnifying-power symmetrical lens system

Also Published As

Publication number Publication date
CH471370A (en) 1969-04-15

Similar Documents

Publication Publication Date Title
GB1148979A (en) Image-forming system
GB1054972A (en)
GB1208970A (en) Improvements relating to objective lens systems
GB1430311A (en) Telephoto lens systems
GB1209082A (en) Telescopic zoom optical system
ES332351A1 (en) Camera cinematographica estereoscopica. (Machine-translation by Google Translate, not legally binding)
GB722325A (en) Improvements in or relating to variable magnification optical systems
GB1182402A (en) Photographic and Cinematographic Lenses
GB1142806A (en) Optical objective
GB1101144A (en) Improvements in or relating to optical systems
GB1437620A (en) Zoom lens having an extremely long focal length range and wide relative aperture
GB1173962A (en) Improvements in Optical Profile Projection Systems
GB1266916A (en)
SE308447B (en)
GB1008309A (en) Variable focal length lens system
GB1260923A (en) Improvements in telecentric lens systems
GB1060266A (en) Optical objective system
GB1029138A (en) Optic lens systems
GB1154706A (en) Accessory Lens
GB1222009A (en) Zoom objective
GB1054994A (en)
GB1254343A (en) Interchangeable lens camera
GB934650A (en) Improvements in or relating to illuminating assemblies for cinematograph and slide projectors
GB1166354A (en) Improvements in and relating to Optical Systems.
JPS5454648A (en) Magnification changing method of projecting optical system

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees