Lens barrel
AssigneePanasonic Corporation
InventorsTakeo SANTO, Masayuki AKIEDA
Life of this patent
Estimating the term…
Abstract
A lens barrel includes: a fixed frame; a zoom ring rotatably held around an outer periphery of the fixed frame; a contact member; and a biasing member. The zoom ring has a first sliding surface to a fourth sliding surface. When the contact member moves on the first sliding surface, a first load is applied to the biasing member; when the contact member moves on the second sliding surface, a second load greater than the first load is applied to the biasing member; and when the contact member moves on the third sliding surface, a load which varies in a range from the first load to the second load is applied to the biasing member.
Claims8
A lens barrel comprising:
- a fixed frame which holds a casing;
- a ring rotatably held around an outer periphery of the fixed frame;
- an action part provided between the fixed frame and the ring, along the outer periphery of the fixed frame;
- and
- a biasing member provided between the fixed frame and the ring, along the outer periphery of the fixed frame,
- wherein the ring comprises a first action surface to be used at a time of photographing, a second action surface to be used when the casing held by the fixed frame is collapsed into the fixed frame, and a third action surface formed between the first action surface and the second action surface, and
- wherein the action part moves on the first action surface, the second action surface, and the third action surface;
- the biasing member biases the action part toward the outer periphery of the fixed frame;
- when the action part moves on the first action surface, a first load is applied to the biasing member;
- when the action part moves on the second action surface, a second load greater than the first load is applied to the biasing member;
- and
- when the action part moves on the third action surface, a load which varies from the first load to the second load is applied to the biasing member.
A lens barrel comprising:
- a fixed frame which holds a casing;
- a ring rotatably held around an outer periphery of the fixed frame;
- an action part provided between the fixed frame and the ring, along the outer periphery of the fixed frame;
- and
- a biasing member provided between the fixed frame and the ring, along the outer periphery of the fixed frame,
- wherein the ring comprises a first action surface to be used at a time of photographing, a second action surface to be used when the casing held by the fixed frame is collapsed into the fixed frame, and a third action surface formed between the first action surface and the second action surface, and
- wherein the action part moves on the first action surface, the second action surface, and the third action surface;
- the biasing member biases the action part toward the outer periphery of the fixed frame;
- the first action surface is located closer to an outer periphery of the ring than the second action surface is;
- and
- the third action surface connects an end of the first action surface and an end of the second action surface.
Dependencies are inferred from the claim text.