Specifications

The Patent Office Journal 17/12/2010
4582
(12) PATENT APPLICATION PUBLICATION (21) Application No.3998/CHENP/2010 A
(19) INDIA
(22) Date of filing of Application :28/06/2010 (43) Publication Date : 17/12/2010
(54) Title of the invention : ZOOM LENS OF THE TELEPHOTO TYPE HAVING A LIQUID LENS IN A FIXED GROUP
(51) International classification :G02B15/173
(31) Priority Document No :60/992,244
(32) Priority Date :04/12/2007
(33) Name of priority country :U.S.A.
(86) International Application No
Filing Date
:PCT/US08/084232
:20/11/2008
(87) International Publication No :WO 2009/073387
(61) Patent of Addition to Application
Number
Filing Date
:NA
:NA
(62) Divisional to Application Number
Filing Date
:NA
:NA
(71)Name of Applicant :
1)BLACKEYE OPTICS, LLC
Address of Applicant :PO BOX 1389, SPEIDEN
ISLAND,EASTSOUND,WA 98245 U.S.A.
(72)Name of Inventor :
1)JANNARD, JAMES H
2)NEIL IAIN A
(57) Abstract :
A high performance zoom lens system suitable for use with a camera is disclosed. The zoom lens systems employs redirection of the
radiation axis, liquid optics and a movable lens group to provide optical performance over the zoom focal length range at focus
distances from close to infinity. The system also provides compensation for undesirable thermally induced effects by adjustments of
the zoom group and the variably shaped optical surface in the liquid lens cell.
No. of Pages : 37 No. of Claims : 8