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US 12,585,051 B2Granted
Adjustment device and optical communication device
AssigneeTamron Co., Ltd.
InventorsMasamitsu Hyodo, Yusuke Hashimoto
Life of this patent
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Abstract
An optical communication device includes an adjustment device and a light receiving unit. The adjustment device includes a wedge prism, an actuator, a detection unit, and a control unit, and the control unit controls the actuator to reduce a difference between a result of detection by the detection unit and a reference.
Claims13
An adjustment device comprising:
- a wedge prism rotatably disposed on an optical path of signal light;
- an actuator that rotates the wedge prism;
- a detection unit that detects a difference between a position of the signal light before being transmitted through the wedge prism or after being transmitted through the wedge prism and a set reference position;
- and
- a control unit that controls the actuator to reduce the difference detected by the detection unit,
- wherein the detection unit includes a branching unit disposed on the optical path of the signal light to branch the signal light, and a branched light receiving unit that receives light branched from the signal light.
3 more elements
An adjustment device comprising:
- a wedge prism rotatably disposed on an optical path of signal light;
- an actuator that rotates the wedge prism;
- a detection unit that detects a difference between a position of the signal light before being transmitted through the wedge prism or after being transmitted through the wedge prism and a set reference position;
- and
- a control unit that controls the actuator to reduce the difference detected by the detection unit,
- wherein the actuator is the voice coil motor, and the voice coil motor includes:
- a magnet fixed to the wedge prism to generate a magnetic field in a direction along a rotation axis of the wedge prism;
- and
- a coil fixed to a substrate that rotatably supports the wedge prism, and including a portion extending in a direction intersecting both a rotation direction of the wedge prism and a direction of the magnetic field.
6 more elements
Dependencies are inferred from the claim text.