G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 15/173 (2006.01) G02B 3/14 (2006.01) G02B 7/00 (2006.01)
Patent
CA 2703246
A zoom lens (60) of the telephoto type comprising: an axially movable lens group (G2); an axially stationary lens group comprising one liquid lens cell (LC) comprising a first and a second contacting liquids, a contacting optical surface (21) between the contacting liquids having a variable shape; and an optical element that redirects the radiation axis; wherein the axially movable lens group (G2) and the axially stationary lens group (LC) are aligned on a common optical axis (38) and collect radiation emanating from the object side (1) of the zoom lens and deliver the radiation to the image side (36). In some embodiments, the system also provides compensation for undesirable thermally induced effects by adjustment of the zoom group and the variably shaped optical surface in the liquid lens cell.
L'invention concerne un objectif (60) du type téléobjectif, comprenant : un groupe de lentilles axialement mobile (G2); un groupe de lentilles axialement stationnaire qui comporte une cellule de lentille liquide (LC) comprenant un premier et un second liquide de contact, une surface optique de contact (21) entre les liquides de contact ayant une forme variable; et un élément optique qui redirige l'axe de rayonnement, le groupe de lentilles axialement mobile (G2) et le groupe de lentilles axialement stationnaire (LC) étant alignés sur un axe optique commun (38) et collectant un rayonnement émanant du côté objet (1) de l'objectif et distribuant le rayonnement vers le côté image (36). Le système permet également la compensation d'effets thermiquement induits non désirables par des ajustements du groupe de zoom et de la surface optique de forme variable dans la cellule de lentille liquide.
Jannard James H.
Neil Iain A.
Blackeye Optics Llc
Sim & Mcburney
LandOfFree
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