On-vehicle camera lens glass material and on-vehicle camera...

Details On-vehicle camera lens glass material and on-vehicle camera... On-vehicle camera lens glass material and on-vehicle camera...

2008-03-19

2011-12-13

Sugarman, Scott J (Department: 2873)

Optical: systems and elements

Lens

Combined with diverse art tool, instrument or machine

Reexamination Certificate

active

08077406

ABSTRACT:
An on-vehicle camera lens glass material satisfies at least one of conditions in which a measurement result in water resistance based on a powder method prescribed by Japanese Optical Glass Industrial Standard is 1stClass, a measurement result in Knoop hardness based on a measurement method prescribed by Japanese Optical Glass Industrial Standard is 6thClass or higher, a measurement result in solarization based on a measurement method prescribed by Japanese Optical Glass Industrial Standard is 2% or less, and a measurement result in average linear expansion coefficient based on a measurement method prescribed by Japanese Optical Glass Industrial Standard is 100×10−7° C.−1or less.

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