发明授权
US07529044B2 Optical element, optical system and methods of manufacturing the same as well as optical equipment 失效
光学元件,光学系统及其制造方法以及光学设备

Optical element, optical system and methods of manufacturing the same as well as optical equipment
摘要:
An optical element has a marker provided in the form of an optical fault at a predetermined location in the effective optical area thereof for positioning. The optical fault is a marker 1a provided at a specific location on the effective optical area of the optical element 1 preferably in the form of a projection, a recess, a tinted portion, a different refraction portion, an air bubble, or a particle on or in the optical element 1. More preferably, the marker 1a is located at or around the center of the optical element 1 and its area size is not greater than 0.4% of the effective optical area of the lens 1.
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