Positioning apparatus for optical element mounting operation having a positioning light receiving element formed on an optical element substrate
US5258623A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 24, 1992 |
| Grant date | Nov 2, 1993 |
| Priority date | — |
| Expiry date | Dec 24, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V8/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A positioning apparatus for an optical element mounting operation includes a transparent substrate, a light source, an optical element substrate, a measuring unit, a manipulator, and a control unit. At least one positioning lens and an optical system are formed on a surface of the transparent substrate. The light source emits parallel beams which are vertically incident on the transparent substrate. A plurality of optical elements to be positioned with respect to the transparent substrate, and a positioning light-receiving element for receiving light focused by the positioning lens are formed on the optical element substrate. The current measuring unit measures a current flowing in the positioning light-receiving element. The manipulator moves the transparent substrate with respect to the optical element substrate to perform positioning of the former with respect to the latter. The control unit controls the manipulator on the basis of a current measured by the current measuring unit to perform positioning of the transparent substrate with respect to the optical element substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.