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US 2002/0159147 A1Published application
Drive mechanism of focusing device
AssigneeOlympus Optical Co., Ltd.
InventorSouji Yamamoto
Life of this patent
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Abstract
A drive mechanism includes a fine-movement ring provided at each of both ends of a fine-movement coupling shaft, disposed outside each of rough-movement handles, and having a smaller outside diameter than an outside diameter of each of the rough-movement handles, and a fine-movement handle detachably attached to at least one of the fine-movement rings.
Claims6
A rough/fine-movement drive mechanism of a focusing device, comprising:
- a rough-movement coupling shaft, to both ends of which rough-movement handles are attached;
- a fine-movement coupling shaft rotatably provided coaxially with the rough-movement coupling shaft;
- a movement mechanism for vertically moving a stage in accordance with rotation of the rough-movement coupling shaft, and decelerating rotation of the fine-movement coupling shaft and moving the stage by an amount of movement less than an amount of movement provided by the rotation of the rough-movement coupling shaft;
- a fine-movement ring provided at each of both ends of the fine-movement coupling shaft, disposed outside each of the rough-movement handles, and having a smaller outside diameter than an outside diameter of each of the rough-movement handles;
- and
- a fine-movement handle detachably attached to at least one of the fine-movement rings.
3 more elements
A microscope comprising:
- a light source;
- a stage for mounting of a sample;
- an illumination optical system for guiding light from the light source onto the sample mounted on the stage;
- an objective lens for converging observation light of the sample of the illumination light guided by the illumination optical system;
- and
- a focusing device for varying a relative distance between the objective lens and the stage:
- wherein the focusing device comprises,
- a rough-movement coupling shaft, to both ends of which rough-movement handles are attached;
- a fine-movement coupling shaft rotatably provided coaxially with the rough-movement coupling shaft;
- a movement mechanism for vertically moving a stage in accordance with rotation of the rough-movement coupling shaft, and decelerating rotation of the fine-movement coupling shaft and moving the stage by an amount of movement less than an amount of movement provided by the rotation of the rough-movement coupling shaft;
- a fine-movement ring provided at each of both ends of the fine-movement coupling shaft, disposed outside each of the rough-movement handles, and having a smaller outside diameter than an outside diameter of each of the rough-movement handles;
- and
- a fine-movement handle detachably attached to at least one of the fine-movement rings.
10 more elements
Dependencies are inferred from the claim text.