Title:
HYBRID CONTINUOUS ZOOM LENS SYSTEM AND METHOD
Document Type and Number:
WIPO Patent Application WO/2016/024161
Kind Code:
A3
Abstract:
A hybrid zoom lens system comprises a plurality of lens groups that provide optical zoom at specified increments, together with software enhancement between the optical increments to provide to the user the perception of continuous zoom. In an embodiment, at least one of the optical groups comprises two rotationally asymmetric, or free form, lenses where the optical zoom is effected by movement of the rotationally asymmetric lenses transverse to the optical axis. In some embodiments, software algorithms are applied to correct for distortion and aberration. In some embodiments, a at least one lens group of rotationally symmetric lenses is provided together with at least one lens group of rotationally asymmetric lenses, wherein the rotationally symmetric group cooperates with the rotationally asymmetric lens group to provide a change in optical power to assist with focusing, zoom, or both.
Inventors:
KAO YUNG YUAN (SG)
CHEO KOON LIN (SG)
CHEO KOON LIN (SG)
Application Number:
PCT/IB2015/001523
Publication Date:
April 28, 2016
Filing Date:
July 13, 2015
Export Citation:
Assignee:
DYNAOPTICS PTE LTD (SG)
International Classes:
H04N5/232; G02B15/14
Domestic Patent References:
| WO2014072818A2 | 2014-05-15 | |||
| WO2013052014A1 | 2013-04-11 |
Foreign References:
| US20060126081A1 | 2006-06-15 | |||
| JPH08256295A | 1996-10-01 | |||
| US20100237718A1 | 2010-09-23 |
Attorney, Agent or Firm:
LEE & LEE (#06-00 Singapore Land Tower, Singapore 3, SG)
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