Lens judging apparatus of lens meter
US4571842A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1984 |
| Grant date | Feb 25, 1986 |
| Priority date | — |
| Expiry date | Oct 10, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/0207
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A lens judging apparatus to be used in a lens meter is disclosed. It has at least one projecting device movably mounted on the both sides of a lens table with respect to its elongated direction. The projecting devices are movably arranged within a predetermined range in the traversing direction relative to the elongated direction of the lens table by receiving the respective spectacles hung thereon. It also has a detector for the movement of the projecting member, a device for judging whether the spectacle lens is for the right or left by detecting a signal emitted from the detector, and a display panel showing a character measuring either "right" or "left" based on the result of judgment made by the judging device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.