Blocker having light transmission and reflection device
US11768390B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2021 |
| Grant date | Sep 26, 2023 |
| Priority date | — |
| Expiry date | May 28, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The blocker described comprises: a lens illumination light source; a light transmission and reflection device to reflect/transmit the light; an image sensor to detect light reflected by the light transmission and reflection device and thereby obtain an lens image; a lens meter to detect the light that has passed through the light transmission and reflection device to thereby measure lens characteristics; and a blocking member to attach a leap block to the lens. The light transmission and reflection device comprises: a first reflection plate having a central hole; a first rotating cylinder to be coupled to and to rotate the first reflection plate; a second rotating cylinder located inside and to rotate the first rotating cylinder; a second reflection plate, adjusted by the second rotating cylinder and configured to open or block the central hole in the first reflection plate; and driving means configured to drive the second rotating cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.