Optical disk checkup/measuring apparatus
US6541748B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 10, 2000 |
| Grant date | Apr 1, 2003 |
| Priority date | — |
| Expiry date | Feb 10, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/00375
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical disk checkup/measuring apparatus capable of shortening measuring time and of being incorporated into a manufacturing line and has a simple structure includes rotation driving elements (2,3) for driving rotation of an optical disk to be measured (10), a light emitting portion LD for emitting a light beam LF onto the optical disk to be measured (10), an optically detecting portion (D1, D2) for receiving and detecting the light beam LR reflected from the optical disk to be measured (10) and an operation processing portion (4, 5) for processing a signal received and detected by the optically detecting portion (D1, D2) so as to form a specified signal. The light emitting portion is composed of a plurality of light emitting elements LD provided in a radial direction of the optical disk to be measured (10), and the light beams are emitted successively from the light emitting elements LD onto the optical disk to be measured (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.