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1. (WO1991017465) LENS SYSTEM
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/017465 International Application No.: PCT/NL1991/000076
Publication Date: 14.11.1991 International Filing Date: 03.05.1991
Chapter 2 Demand Filed: 23.10.1991
IPC:
G02C 7/08 (2006.01)
G PHYSICS
02
OPTICS
C
SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
7
Optical parts
02
Lenses; Lens systems
08
Auxiliary lenses; Arrangements for varying focal length
Applicants:
SCHMIDT OPTIEK B.V. [NL/NL]; Rokin 72 NL-1012 KW Amsterdam, NL (AllExceptUS)
HAAKSMAN, Ernst, Jan [NL/NL]; NL (UsOnly)
Inventors:
HAAKSMAN, Ernst, Jan; NL
Agent:
SMULDERS, Th., A., H., J.; Vereenigde Octrooibureaux Nieuwe Parklaan 107 NL-2587 BP The Hague, NL
Priority Data:
900108404.05.1990NL
Title (EN) LENS SYSTEM
(FR) SYSTEME DE LENTILLES
Abstract:
(EN) A lens system comprises two magnifiers and distance measuring means. With the distance measuring means the distance is measured of an object to be viewed. The focal distance of the magnifiers is automatically adapted to the measured object distance while the convergence distance of the magnifiers is likewise automatically adapted to the measured object distance. This enables the user to automatically have a stereoscopically sharp view over a wide range of object distances, a magnification being obtained depending on the magnifiers employed.
(FR) Le système de lentilles décrit comprend deux verres grossissants et un organe de mesure de distance. La distance d'un objet à visualiser est mesurée au moyen de l'organe de mesure de distance. La distance focale des verres grossissants est automatiquement ajustée sur la distance mesurée de l'objet, tandis que la distance de convergence des verres grossissants est automatiquement ajustée de la même manière sur la distance mesurée de l'objet. Ainsi, l'utilisateur peut obtenir automatiquement une vue stéréoscopique nette sur une large gamme de distances de l'objet, un grossissement étant obtenu en fonction des verres grossissants employés.
Designated States: AU, CA, JP, NO, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: Dutch (NL)
Also published as:
NO19924231ES2049550EP0527198US5374820JP2942627JPH05507159
CA2081329DE000069100813AU1991078768DK0527198