Objective lens unit, in-vivo examination apparatus and adaptor
AssigneeOlympus Corporation
InventorsChika Nakajima, Yoshihisa Tanikawa
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Abstract
When examining a living organism exhibiting dynamic behavior such as pulsing, the dynamic behavior is suppressed and clear images are acquired. The invention provides an objective lens unit including a lens barrel for supporting optical components, wherein an end surface of the lens barrel is disposed farther towards the distal side than an optical component at the extreme distal end, and channel-shaped indented portions extending in the diametrical direction are formed in the end surface of the lens barrel.
Claims4
An objective lens unit comprising:
- a lens barrel for supporting optical components,
- wherein an end surface of the lens barrel is disposed farther towards the distal side than an optical component at the extreme distal end, and
- channel-shaped indented portions extending in a diametrical direction are formed in the end surface of the lens barrel.
A tube-shaped adaptor for attaching to an end of a lens barrel supporting optical components in an objective lens unit, comprising:
- a pressing surface disposed farther towards a distal side than an end surface of the lens barrel,
- wherein channel-shaped indented portions extending in a diametrical direction are formed in the pressing surface.
Dependencies are inferred from the claim text.