Lens barrel, image pickup device, and lens barrel manufacturing method
AssigneePanasonic Corporation
InventorsEiichi Nagaoka, Keiji Sakamoto
Life of this patent
Estimating the term…
Abstract
A lens barrel includes a fourth lens, a prism, and a sixth lens. The fourth lens receives a light flux incident along a first optical axis. The prism includes a reflecting surface reflecting the light flux passing through the fourth lens to a direction along a second optical axis intersecting with the first optical axis. The sixth lens receives the light flux reflected by the prism. A second group frame includes an opening portion, a prism retaining frame that is arranged in a more inner position than the opening portion and in which the prism is contained, and a plurality of adhesive pockets arranged on an area around the prism retaining frame and being open to the side of the opening portion. Adhesive agent is filled in the adhesive pockets.
Claims13
A lens barrel, comprising:
- a first lens configured to receive a light flux incident along a first optical axis;
- a bending member configured to reflect the light flux passing through the first lens to a direction along a second optical axis intersecting with the first optical axis;
- a second lens configured to receive the light flux passing through the bending member;
- and
- a lens frame to which the bending member is fixed,
- the bending member including an entrance surface in which the light flux passing through the first lens enters, a reflecting surface configured to reflect the light flux incident from the entrance surface to a direction along the second optical axis, and an output surface from which the light flux reflected by the reflecting surface exits, and
- the lens frame including at least three first contact portions being in contact with the reflecting surface, and at least two second contact portions being in contact with the output surface, and
- the second lens being directly-contacted with the output surface.
A manufacturing method of a lens barrel including a first lens configured to receive a light flux incident along a first optical axis, a bending member configured to reflect the light flux passing through the first lens to a direction along a second optical axis intersecting with the first optical axis, a second lens configured to receive the light flux passing through the bending member, and a lens frame to which the bending member is fixed, the lens barrel manufacturing method comprising:
- fitting the bending member into the lens frame;
- pressing the bending member against the lens frame;
- filling adhesive agent between the lens frame and the bending member while the bending member is pressed against the lens frame;
- and
- curing the adhesive agent while the bending member is pressed against the lens frame, wherein
- the bending member includes a reflecting surface configured to reflect the light flux passing through the first lens to a direction along the second optical axis, and an output surface from which the light flux reflected by the reflecting surface exits,
- the lens frame includes at least three first contact portions being in contact with the reflecting surface, and at least two second contact portions being in contact with the output surface, and
- the second lens being directly-contacted with the output surface.
A lens barrel, comprising:
- a first lens configured to receive a light flux incident along a first optical axis;
- a bending member configured to reflect the light flux passing through the first lens to a direction along a second optical axis intersecting with the first optical axis;
- a second lens configured to receive the light flux passing through the bending member;
- and
- a lens frame to which the bending member is fixed,
- the bending member including an entrance surface in which the light flux passing through the first lens enters, a reflecting surface configured to reflect the light flux incident from the entrance surface to a direction along the second optical axis, and an output surface from which the light flux reflected by the reflecting surface exits, and
- the lens frame including at least three first contact portions being in contact with the reflecting surface, and at least two second contact portions being in contact with the entrance surface, and
- the first lens being directly-contacted with the entrance surface and the second lens being directly-contacted with the output surface.
Dependencies are inferred from the claim text.