Photography – Camera detail – Diaphragm
Reexamination Certificate
2007-05-08
2007-05-08
Perkey, W. B. (Department: 2851)
Photography
Camera detail
Diaphragm
C359S275000
Reexamination Certificate
active
10941005
ABSTRACT:
To provide an optical density-changing element which has excellent properties that it can be brought into a colored state by applying only a low voltage, that it shows a rapid response speed and becomes completely colorless when restored to a bleached state from the colored state, and which can undergo a change in optical density in response to an applied voltage,the optical density-changing element includes, on each of an anode and a cathode, a material capable of at least one of donating and accepting an electron and, as a result of at least one of donating and accepting the electron, undergoing a change in absorption spectrum in a visible region and a material undergoing substantially no change in absorption spectrum in the visible region, with potentials of these materials satisfying a specific relation defined in the specification.
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Kaneiwa Hideki
Matsunaga Atsushi
Morimoto Kiyoshi
Shinohara Ryuji
Fujifilm Corporation
Perkey W. B.
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