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US 2001/0012155 A1Published application
Optical apparatus
AssigneeCanon Kabushiki Kaisha
InventorToshimi Iizuka
Life of this patent
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Abstract
This invention relates to an optical apparatus for observation which is provided with drive control means for driving a variable angle prism on the basis of an output signal from vibration detecting means and in which the variable angle prism is installed between an objective lens and an erect prism.
Claims3
An optical apparatus for observation comprising:
- objective lens means;
- eyepiece means;
- prism means for reflecting a light beam from said objective lens means to direct it to said eyepiece means;
- and
- variable angle prism means disposed between said objective lens means and said prism means for changing the direction of the light beam from said objective lens means.
2 more elements
Dependencies are inferred from the claim text.