Optical apparatus

G - Physics – 02 – B

Patent

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Details

G02B 27/00 (2006.01) G02B 13/14 (2006.01) G02B 13/16 (2006.01)

Patent

CA 2466788

The present invention provides an optical apparatus comprising an objective lens system for focusing optical radiation from a scene or object into an intermediate image and having at least one lens element which imposes a substantial degree of negative distortion on the intermediate image; a second lens system for focussing optical radiation from the intermediate image into a final image; an aperture stop for limiting the optical radiation forming the final image,the aperture stop being located between the final image region in which the final image is formed or to be formed, and the lens element of the second lens system most distant from the final image region.

L'invention concerne un appareil optique équipé d'un système d'objectif permettant de focaliser des rayonnements optiques depuis un lieu ou un objet dans une image intermédiaire et présentant au moins un élément de lentille qui impose un certain degré de distorsion négative sur l'image intermédiaire ; d'un second système d'objectif permettant de focaliser des rayonnements optiques depuis l'image intermédiaire en une image finale ; d'un diaphragme servant à limiter les rayonnements optiques formant l'image finale, ce diaphragme étant disposé entre la zone d'image finale dans laquelle l'image finale est/doit être formée, et l'élément de lentille du second système d'objectif le plus éloigné de la zone d'image finale.

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