Device and method for aligning and bonding lens array and PD array with high precision
US9964717B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2014 |
| Grant date | May 8, 2018 |
| Priority date | — |
| Expiry date | Dec 17, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4204
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Device and method are provided to align and bond a lens array to a PD array with high precision, which can implement aligning and bonding of the lens array automatically. A telescopic rod of the stepping actuator is adjusted until photosensitive areas of the PD array form a clear image on the image acquisition CCD through the lens array, an adjusted distance h1 of the telescopic rod is recorded, and a position coordinate (xn, yn) of center of each circular photosensitive area in the image may be obtained, and a slope k1 of a line connecting the centers of the photosensitive areas is calculated. The telescopic rod is adjusted again, and a slope k2 of a line connecting the centers of the apertures of the lens array is calculated. Based on calculated values Δxn, Δyn, arctan(k1)−arctan(k2), the high-resolution adjustment stage is adjusted to adjust position of the lens array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.