Image pickup optical system
AssigneeCanon Kabushiki Kaisha
InventorNORIHIRO NANBA
Life of this patent
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Abstract
An image pickup optical system includes an optical unit having a light incidence surface on which a light is incident, a light reflecting surface reflecting the light incident from the light incidence surface and having a curvature, and a light emergence surface from which the light reflected by the light reflecting surface emerges, and a transparent optical member disposed near the surface position of at least one of the light incidence surface and the light emergence surface. The optical member is adhesively fixed to the optical unit to thereby make any special holding member for the optical member relative to the optical unit unnecessary.
Claims11
An image pickup optical system comprising:
- an optical unit having a light incidence surface on which a light is incident, a light reflecting surface reflecting the light incident from said light incidence surface and having a curvature, and a light emergence surface from which the light reflected by said light reflecting surface emerges;
- and
- a transparent optical member disposed near the surface position of at least one of said light incidence surface and said light emergence surface;
- said optical member being fixed to said optical unit.
Dependencies are inferred from the claim text.