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US 9,804,379 B2Granted
Follow-up fixed focus system
AssigneeShanghai Ruiyu Biotech Co., Ltd.
InventorsPuwen Luo, Rui Chen
Life of this patent
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Abstract
A follow-up fixed focus system includes a fixed focus device, and the second end of the fixed focus device is in contact with a sample plate; when the sample plate has a small protrusion, the second end of the fixed focus device is pushed by the protrusion of the sample plate. When the sample plate has a small depression, the second end of the fixed focus device is in contact with the sample plate all the time under the action of self gravity of an observation device, so that the imaging distance between an object lens and the sample plate is kept unchanged.
Claims15
A follow-up fixed focus system, comprising:
- a stage;
- a sample plate fixed on the stage;
- a support frame vertically connected to the stage;
- and
- an observation device slidably arranged on the support frame,
- wherein the observation device comprises a camera or an eyepiece, an objective lens and a lens barrel part;
- and a fixed focus device having one end fixedly connected to the observation device and another end in contact with the sample plate, and
- wherein the fixed focus device maintains a vertical distance between the sample plate and the objective lens to be unchanged,
- wherein the fixed focus device comprises a support rod and a light-transmittable component, and
- the support rod has one end fixedly connected to the observation device and another end fixedly connected to the light-transmittable component, and a space between the objective lens and the light-transmittable component is hollow.
7 more elements
Dependencies are inferred from the claim text.