Light amount adjustment device, imaging device, imaging system and moving object
AssigneeSz Dji Technology Co., Ltd.
InventorsLongji BAI, Takashi KOYAMA, Yongwang XU
Life of this patent
Estimating the term…
Abstract
A light amount adjustment device includes a base member, a rotation member rotatably held with respect to the base member, and a light amount adjustment member engaged with the rotation member and configured to be driven by the rotation member to adjust an amount of passing light. The rotation member includes a first surface area in contact with the base member and a second surface area not in contact with the base member. A surface roughness of the first surface area is greater than a surface roughness of the second surface area.
Claims20
A light amount adjustment device, comprising:
- a base member;
- a rotation member rotatably held with respect to the base member, the rotation member including a first surface area in contact with the base member and a second surface area not in contact with the base member, and a surface roughness of the first surface area being greater than a surface roughness of the second surface area;
- and
- a light amount adjustment member engaged with the rotation member and configured to be driven by the rotation member to adjust an amount of passing light.
A light amount adjustment device, comprising:
- a rotation member;
- a light amount adjustment member engaged with the rotation member and being configured to be driven by the rotation member to adjust an amount of passing light;
- and
- an elastic member configured to suppress rotation of the rotation member and to energize the rotation member.
A light amount adjustment device, comprising:
- a rotation member including:
- a main body portion;
- a gear portion provided at the main body portion and configured to engage with a driving source;
- and
- a weight portion provided at the main body portion;
- and
- a light amount adjustment member engaged with the rotation member and being configured to be driven by the rotation member to adjust an amount of passing light;
- wherein a position of a center of gravity of a combination of the main body portion, the gear portion, and the weight portion is closer to a rotation shaft of the rotation member than a position of a center of gravity of a combination of the main body portion and the gear portion.
Dependencies are inferred from the claim text.