Invention Grant
US07885011B1 Objective for optical imaging systems 有权
光学成像系统的目的

Objective for optical imaging systems
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
Information query
Patent Agency Ranking
0/0