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US 6,583,928 B2Granted
Microscope
AssigneeNikon Corporation
InventorsHiroshi Ooki, Yuji Kadomatsu, Katsumi Ogino
Life of this patent
Estimating the term…
Abstract
A microscope having little damage such as deformation, discoloration or the like given to a sample is disclosed. This microscope comprises an illuminance reducing unit for reducing illuminance of an illumination light on the sample. Assuming that a time width where illuminance is at a level enough for displaying an image of the sample is TF, a time width where illuminance is lower than the level enough for displaying an image of the sample is TN, and a value α is as follows: α=TF/(TF+TN) the value α is changed according to a velocity of a stage or the like. A monitor displays a still picture of the sample for a period of TN, the still picture being one before the time width TN.
Claims23
A microscope comprising:
- a light source;
- an illumination optical system irradiating a sample with an illumination light emitted from the light source;
- a stage placing the sample;
- an image-forming optical system collecting an observed light exiting from the sample;
- a detector detecting the observed light passing through the image-forming optical system;
- a processing unit processing a signal from the detector;
- a display displaying an image of the sample based on a video signal from the processing unit;
- and
- an illuminance reducing unit reducing illuminance of the illumination light on the sample to be lower than a specified value which is enough for observation by the display;
- and
- a control unit detecting a change amount of a video signal supplied from the processing unit, and controlling an operation of the illuminance reducing unit according to the change amount.
8 more elements
A microscope comprising:
- a light source;
- an illumination optical system irradiating a sample with an illumination light emitted from the light source;
- a stage placing the sample;
- an image-forming optical system collecting an observed light exiting from the sample;
- a detector detecting observed light passing through the image-forming optical system;
- a processing unit processing a signal from the detector;
- a monitor for displaying an image of the sample based on a video signal from the processing unit;
- an illuminance reducing unit for reducing illuminance of the illumination light on the sample;
- and
- a control unit detecting a change amount of the video signal input into the processing unit, operating the illuminance reducing unit to reduce illuminance of the illumination light on the sample to a level for detecting the change amount of the video signal when the change amount of the video signal is smaller than a predetermined value, outputting the video signal immediately before reduction of the illuminance as a still picture on the monitor, canceling the operation of the illuminance reducing unit to set the illuminance to be enough for displaying an image of the sample when the change amount of the video signal is equal to the predetermined value, alternatively larger, and then outputting the video signal of this time as a motion picture to the monitor.
7 more elements
A microscope comprising:
- a light source;
- an illumination optical system irradiating a sample with an illumination light emitted from the light source;
- a stage placing the sample;
- an image-forming optical system collecting an observed light exiting from the sample;
- a detector detecting the observed light passing through the image-forming optical system;
- a processing unit processing a signal from the detector
- a monitor displaying an image of the sample based on a video signal from the processing unit;
- an illuminance reducing unit for reducing illuminance of the illumination light on the sample to a level insufficient for display of the image on the monitor;
- and
- a control unit detecting a change amount of the video signal entered into the processing unit, and controlling the illuminance reducing unit and the processing unit according to the change amount.
7 more elements
A microscope comprising:
- an illumination optical system irradiating a sample with an illumination light emitted from a light source;
- a stage placing the sample;
- an image-forming optical system collecting an observed light exiting from the sample;
- displaying means for displaying an image of the sample, which is obtained by detecting the observed light passing through the image-forming optical system and performing image processing;
- illuminance reducing means for reducing illuminance of the illumination light on the sample;
- and
- control means for detecting a change amount of an image input into a processing unit, operating the illuminance reducing means to reduce illuminance of the sample to a level for detecting the change amount of a video signal when the change amount of the video signal is smaller than a predetermined value, outputting a still picture immediately before reduction of the illuminance to the displaying means, canceling the operation of the illuminance reducing means to obtain illuminance enough for displaying an image of the sample when the change amount of the video signal is equal to the predetermined value, alternatively larger, and outputting a motion picture at this time to the minitor.
4 more elements
A microscope comprising:
- an illumination optical system irradiating a sample with an illumination light emitted from a light source;
- a stage placing the sample;
- an image-forming optical system collecting an observed light exiting from the sample;
- displaying unit to display an image of the sample, which is obtained by detecting to observed light passing through the image-forming optical system and performing image processing;
- illumination reducing unit to reduce illuminance of the illumination light on the sample to a level insufficient for display of the image on the monitor;
- and
- a control unit detecting a change amount of an image detected by the displaying unit and controlling the illuminance reducing unit and the displaying unit according to the change amount.
4 more elements
Dependencies are inferred from the claim text.