# US 10,371,833 B2 · X-ray detector having a light source on the carrier element

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- Number: US 10,371,833 B2
- Document ID: US10371833B2
- Status: Granted
- Kind: B2
- Application number: 15/978,371
- Filed: 2018-05-14
- Published: 2018-11-22
- Granted: 2019-08-06
- Earliest claimed: 2017-05-17
- Assignees: Siemens Healthcare GmbH
- Applicants: Siemens Healthcare GmbH
- Inventors: Stefan Woelfel; Alfons Eismann
- Web page: https://patentgrep.com/patent/US10371833B2

## CPC

- G01T 1/244: {Auxiliary details, e.g. casings, cooling, damping or insulation against damage by, e.g. heat, pressure or the like}
- A61B 6/032: {Transmission computed tomography [CT]}
- A61B 6/4233: {using matrix detectors}
- A61B 6/4291: {the detector being combined with a grid or grating}
- A61B 6/4488: {Means for cooling (A61B6/045 takes precedence)}
- G01T 1/24: with semiconductor detectors
- G01T 1/247: {Detector read-out circuitry (for processing gain or off-set correction H04N)}
- 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

An X-ray detector includes a converter element and a carrier element in a stack arrangement. In an embodiment, the X-ray detector further includes a light source arranged on the carrier element, a light-directing unit formed outside a projection of a planar extension of the converter element in the stacking direction, and a light-directing unit arranged such that a quantity of light emitted from the light source is incident on a surface of the converter element, facing away from the carrier element via a light path.

## Claims

### Claim 1

An X-ray detector, comprising:
a converter element;
a carrier element, the converter element and the carrier element being arranged in a stack arrangement;
a light source, arranged on the carrier element;
a light-directing unit, formed outside a projection of a planar extension of the converter element in a stacking direction of the stack arrangement, the light-directing unit being arranged such that a quantity of light, when emitted by the light source, is incident on a surface of the converter element, facing away from the carrier element via a light path.

### Claim 2 (depends on 1)

The X-ray detector of claim 1, wherein a planar extension of the carrier element is relatively greater than a planar extension of the converter element.

### Claim 3 (depends on 2)

The X-ray detector of claim 2, wherein the light source is arranged outside the projection of the converter element in the stacking direction.

### Claim 4 (depends on 2)

The X-ray detector of claim 2, wherein the light path partially runs essentially parallel to the stacking direction.

### Claim 5 (depends on 2)

The X-ray detector of claim 2, wherein the light-directing unit includes a reflection unit.

### Claim 6 (depends on 2)

The X-ray detector of claim 2, wherein the light-directing unit includes a light guide.

### Claim 7 (depends on 2)

A medical device comprising the an X-ray detector of claim 2.

### Claim 8 (depends on 7)

The medical device of claim 7, wherein the medical device is a computed tomography system.

### Claim 9 (depends on 1)

The X-ray detector of claim 1, wherein the light path partially runs essentially parallel to the stacking direction.

### Claim 10 (depends on 1)

The X-ray detector of claim 1, wherein the light-directing unit includes a reflection unit.

### Claim 11 (depends on 1)

The X-ray detector of claim 1, wherein the light-directing unit includes a light guide.

### Claim 12 (depends on 11)

The X-ray detector of claim 11, wherein the light guide partially runs through a recess of a further carrier element.

### Claim 13 (depends on 11)

The X-ray detector of claim 11, wherein the light-directing unit is arranged on a surface of an anti-scatter grid facing the converter element.

### Claim 14 (depends on 11)

The X-ray detector of claim 11, wherein the stack arrangement also includes an evaluation unit between the converter element and the carrier element.

### Claim 15 (depends on 14)

The X-ray detector of claim 14, wherein the evaluation unit or the light guide includes a light screen opaque for the quantity of light.

### Claim 16 (depends on 1)

The X-ray detector of claim 1, wherein the carrier element includes a thermal through-connection.

### Claim 17 (depends on 1)

The X-ray detector of claim 1, wherein the carrier element includes an electrically insulating carrier material, a composite material or a ceramic material.

### Claim 18 (depends on 1)

The X-ray detector of claim 1, wherein the light source is configured to emit infrared, visible or ultraviolet light.

### Claim 19 (depends on 1)

A medical device comprising the an X-ray detector of claim 1.

### Claim 20 (depends on 19)

The medical device of claim 19, wherein the medical device is a computed tomography system.

### Claim 21 (depends on 1)

The X-ray detector of claim 1, wherein the light-directing unit is arranged on a surface of an anti-scatter grid facing the converter element.

### Claim 22 (depends on 1)

The X-ray detector of claim 1, wherein the stack arrangement also includes an evaluation unit between the converter element and the carrier element.