Television – Camera – system and detail – Optics
Reexamination Certificate
2005-08-09
2005-08-09
Moe, Aung (Department: 2612)
Television
Camera, system and detail
Optics
C348S342000, C348S224100
Reexamination Certificate
active
06927798
ABSTRACT:
A light amount adjusting apparatus is constructed by a driving source, a plurality of light shielding members each having a notched portion adapted to form a light passing port, in which the light shielding member is moved by being driven by the driving source to thereby vary an area of the light passing port which is formed in the notched portion, and at least one filter provided for the notched portions of the plurality of light shielding members, in which the filter is provided so as to cover a part of the notched portion and has a first area having first light transmittance and a second area having second light transmittance lower than the first light transmittance. When the area of the light passing port which is formed by the light shielding members is in a maximum state, a relation (A3<A2<A1) is satisfied assuming that, in the light passing port, A1indicates an area of a portion which is not covered with the filter, A2indicates an area of a portion covered with the first area of the filter, and A3indicates an area of a portion covered with the second area of the filter.
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Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Moe Aung
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