Optical film encoding apparatus
US5574521A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1996 |
| Grant date | Nov 12, 1996 |
| Priority date | — |
| Expiry date | Jan 11, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2217/243
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Optical film encoding apparatus comprising an LED with a pair of wire leads, and means for supporting the LED including its wire leads to precisely position the LED opposite a filmstrip to be optically encoded, is characterized in that the supporting means supports each one of the wire leads suitably bent at multiple angles to prevent stray ambient light from following the wire leads towards the filmstrip. Preferably, the supporting means includes a lead spreader which supports the wire leads bent at an initial one of the multiple angles closest to the LED in opposite directions to dynamically balance the deformation forces applied to the wire leads due to their being bent. This is done to prevent the deformation forces from otherwise tending to shift the LED from being precisely positioned relative to the filmstrip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.