Anticollision system for objective lens in an optical data recording apparatus
US5286965A · kind A · utility
4Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 22, 1992 |
| Grant date | Feb 15, 1994 |
| Priority date | — |
| Expiry date | May 22, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An anticollision system for an objective lens for use in an optical data reproducing apparatus. The apparatus is constructed so that the relative distance between the objective lens and a data recording medium is detected, and the objective lens pulled away from the data recording medium to prevent the objective lens from colliding with the data recording medium when the detected relative distance is reduced to a predetermined value or below. Consequently, a collision between the objective lens and the data recording medium can be prevented if the following operation fails or malfunctions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.