Apparatus for exposing a face of a printed circuit panel
US6646279B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2002 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Apr 14, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K3/0082
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus for exposing a light sensitive surface (e.g., a printed circuit board) to light. An optical processor subsystem, which includes a reflector and an integrator-collimator assembly, processes light from a light source to produce a uniform and collimated light beam having a mean angle of incidence relative to the light sensitive surface of less than or equal to 2° and having illumination uniformity that departs by less than ±10% from a mean value. An optical light shaper subsystem transforms the uniform and collimated light beam into a uniform and collimated light strip. A displacement mechanism provides relative movement between the light strip and the light sensitive surface. A speed matching mechanism matches the speed of relative displacement to the brightness of the light strip and to the sensitivity of the light sensitive surface. The light source remains stationary in one construction and moves relative to the light sensitive panel in another construction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.