# US 2014/0151568 A1 · Digital image detector and digital image detecting method using gratings

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- Number: US 2014/0151568 A1
- Document ID: US20140151568A1
- Status: Published application
- Kind: A1
- Application number: 14/122,142
- Filed: 2011-05-27
- Published: 2014-06-05
- Earliest claimed: 2011-05-26
- Inventors: Dong June Seen
- Web page: https://patentgrep.com/patent/US20140151568A1

## CPC

- G01T 1/2002: {Optical details, e.g. reflecting or diffusing layers}
- A61B 6/4233: {using matrix detectors}
- A61B 6/4291: {the detector being combined with a grid or grating}
- A61B 6/484: {involving phase contrast X-ray imaging}
- G01T: MEASUREMENT OF NUCLEAR OR X-RADIATION (radiation analysis of materials, mass spectrometry G01N23/00; tubes for determining the presence, intensity, density or energy of radiation or particles H01J47/00)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A digital image detector and a digital image detecting method using gratings are provided. The digital image detector includes a fluorescent screen that receives X-rays passing through an object, converts the received X-rays into rays and outputs the converted rays, a first reflecting plane that reduces an image based on the rays output from the fluorescent screen in a first axis direction using a grating, a second reflecting plane that reduces the image reduced by the first reflecting plane in a second axis direction using a grating, and an imaging device that receives the image reflected and output from the second reflecting plane, focuses the received image, and converts the focused image into an electrical signal.

## Claims

### Claim 1

An image detector with gratings, comprising:
a fluorescent screen that receives X-rays passing through an object, converts the received X-rays into a light beam and outputs the converted light beam;
a first reflecting plane that reduces an image based on the light beam output from the fluorescent screen in a first axis direction using a grating;
a second reflecting plane that reduces the image reduced by the first reflecting plane in a second axis direction using a grating; and
an imaging device that receives the image reflected and output from the second reflecting plane, focuses the received image, and converts the focused image into an electrical signal.

### Claim 2 (depends on 1)

The image detector with gratings according to claim 1, wherein the first reflecting plane reduces the image output from the fluorescent screen in a vertical direction and the second reflecting plane reduces the image output from the first reflecting plane in a horizontal direction.

### Claim 3 (depends on 1)

The image detector with gratings according to claim 1, wherein the first reflecting plane reduces the image output from the fluorescent screen in a horizontal direction and the second reflecting plane reduces the image output from the first reflecting plane in a vertical direction.

### Claim 4 (depends on 1)

The image detector with gratings according to claim 1, wherein a reflecting portion having a constant brazed angle is formed on the front surfaces of the gratings.

### Claim 5 (depends on 1)

The image detector with gratings according to claim 1, wherein slits having a constant brazed angle are formed in the gratings.

### Claim 6 (depends on 1)

The image detector with gratings according to claim 1, wherein the image reflected and output from the second reflecting plane passes through a total reflection prism.

### Claim 7

An image detecting method with gratings, comprising the steps of:
receiving X-rays passing through an object and converting the received X-rays into a light beam;
reducing an image based on the converted light beam in a first axis direction using a grating;
reducing the image reduced by the first reflecting plane in a second axis direction using a grating; and
converting the image reduced in the second axis direction into an electrical signal.

### Claim 8 (depends on 7)

The image detecting method with gratings according to claim 7, wherein the step of reducing the image in the first axis direction includes reducing the image in a horizontal direction, and
wherein the step of reducing the image in the second axis direction includes reducing the image in a vertical direction.

### Claim 9 (depends on 7)

The image detecting method with gratings according to claim 7, wherein the step of reducing the image in the first axis direction includes reducing the image in a vertical direction, and
wherein the step of reducing the image in the second axis direction includes reducing the image in a horizontal direction.

### Claim 10 (depends on 7)

The image detecting method with gratings according to claim 7, wherein the X-rays passing through the object are converted into any of visible rays, infrared rays, and ultraviolet rays.