# US 2018/0024344 A1 · Microscope

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- Number: US 2018/0024344 A1
- Document ID: US20180024344A1
- Status: Published application
- Kind: A1
- Application number: 15/549,276
- Filed: 2015-02-17
- Published: 2018-01-25
- Earliest claimed: 2015-02-17
- Assignees: Shimadzu Corporation
- Applicants: Shimadzu Corporation
- Inventors: Atsushi UEDA
- Web page: https://patentgrep.com/patent/US20180024344A1

## CPC

- G02B 21/362: {Mechanical details, e.g. mountings for the camera or image sensor, housings (G02B21/364 takes precedence)}
- G02B 21/04: involving mirrors
- G02B 21/06: Means for illuminating specimens
- G02B 21/082: {for incident illumination only}
- G02B 21/18: Arrangements with more than one light path, e.g. for comparing two specimens
- G02B 21/248: {objective (or ocular) turrets}
- G02B 21/361: {Optical details, e.g. image relay to the camera or image sensor (G02B21/364 takes precedence; illumination details G02B21/06 and subgroups)}
- G02B 17/061: {on-axis systems with at least one of the mirrors having a central aperture}
- H04N 23/56: provided with illuminating means
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

A microscope equipped with an imaging device used for the positioning of a sample, the microscope capable of removing distortion and blind spots from an image generated by the imaging device and reducing cost by using a commercially available imaging device. A sample holder for holding a sample; a measurement light source for irradiating the sample held by the sample holder with irradiation light; a focusing optical element for focusing measurement light derived from the irradiation light transmitted through or reflected from the sample; a detection unit for detecting the measurement light focused by the focusing optical element; an image capture device for capturing the image of the sample; and an objective optical system switching unit arranged to switch either the focusing optical element or the image capture device with the other to a position facing the sample.

## Claims

### Claim at position 1

1-3. (canceled)

### Claim 4

A microscope comprising:
a) a sample holder holding a sample;
b) a measurement light source irradiating the sample held by the sample holder with irradiation light,
c) a Cassegrain mirror focusing measurement light derived from the irradiation light transmitted through the sample or reflected from the sample;
d) a detection unit detecting the measurement light focused by the Cassegrain mirror,
e) a magnified visible light image capture device capturing an image of the sample through the Cassegrain mirror,
f) an image capture device capturing an image of the sample in a wider imaging area than the magnified visible light image capture device; and
g) an objective optical system switching unit arranged to switch one of the Cassegrain mirror and the image capture device to the other at a position facing the sample.

### Claim 5 (depends on 4)

The microscope according to claim 4, further comprising:
an image capture light source irradiating the sample with light having a wavelength detectable by the image capture device.

### Claim 6 (depends on 4)

The microscope according to claim 4, wherein the objective optical system switching unit is a revolver switching the Cassegrain mirror and the image capture device by rotation.

### Claim 7 (depends on 5)

The microscope according to claim 5, wherein the objective optical system switching unit is a revolver switching the Cassegrain mirror and the image capture device by rotation.