Invention Grant
- Patent Title: Objective for optical imaging systems
- Patent Title (中): 光学成像系统的目的
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Application No.: US12543785Application Date: 2009-08-19
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Publication No.: US07885011B1Publication Date: 2011-02-08
- Inventor: Xinghua Wang , Mark Marshall Meyers , Siavash Yazdanfar
- Applicant: Xinghua Wang , Mark Marshall Meyers , Siavash Yazdanfar
- Applicant Address: US NY Niskayuna
- Assignee: General Electric Company
- Current Assignee: General Electric Company
- Current Assignee Address: US NY Niskayuna
- Agent Jenifer R. Haeckl
- Main IPC: G02B21/02
- IPC: G02B21/02 ; G02B13/18

Abstract:
A wide angle hybrid refractive-diffractive endoscope objective is provided. The objective comprises a negative meniscus lens having a first surface and a second surface; a stop adjacent to the negative meniscus lens; a positive lens adjacent to the negative lens and having a first surface and a second surface; and a hybrid refractive-diffractive element adjacent to the positive lens and having a first surface and a second surface, wherein one of the first surface, or the second surface comprises a diffractive surface, wherein the objective has an effective focal length in a range from about 0.8 mm to about 1.6 mm.
Public/Granted literature
- US20110043916A1 OBJECTIVE FOR OPTICAL IMAGING SYSTEMS Public/Granted day:2011-02-24
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