Manufacturing and detecting device and method of birefringent lens grating
US8873019B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 15, 2010 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Jun 24, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B30/27
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present disclosure provides a detecting device of a birefringent lens grating. The detecting device includes a projection pattern disposed adjacent to the birefringent lens grating; an illuminating light source for projecting light onto the projection pattern and the birefringent lens grating; an image capturing device for capturing the light out from the birefringent lens grating and obtaining a projection pattern image of the projection pattern; and a controller for comparing the projection pattern image with a reference to determine a refractive index matching degree of the birefringent lens grating. The present disclosure further provides a detecting method, a manufacture method and a manufacture device of the birefringent lens grating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.