Power system for dosimeter reader

• US 8,575,572 B2
• Filed: 03/13/2013
• Issued: 11/05/2013
• Est. Priority Date: 04/09/2010
• Status: Active Grant

• Current Assignee: Landauer, Inc. (Fortive Corp.)
• Original Assignee: Landauer, Inc. (Fortive Corp.)
• Inventors: Yoder, R. Craig, Akselrod, Mark S., Dillin, Kent J., Fomenko, Vasiliy V., Johnson, David F., Tatsumi, Yoshikazu, Lo, Tse-Min
• Primary Examiner(s): Porta, David
• Assistant Examiner(s): FEIN, ABRA S
• Application Number:
  US13/798,427
• Publication Number:
  US 20130193348A1
• Time in Patent Office: 237 Days
• Field of Search: 250/484.2, 250/484.5, 248/222.52, 248/225.21
• US Class Current: 250/484.2
• CPC Class Codes: G01T 1/10 Luminescent dosimeters
• CPC Class Codes: G01T 1/105 Read-out devices G01T1/115 takes precedence
• CPC Class Codes: G01T 1/115 Read-out devices

Abstract

A portable dosimeter reader device includes an optically stimulated luminescence (OSL) reader for reading one or more OSL sensors of a dosimeter sled; a sled slider that is driven by a sled slider motor to position in turn each of the one or more OSL sensors of the dosimeter sled at a reading position where the OSL reader reads each respective OSL sensor; a display for displaying information relating to reading the one or more OSL sensors; and a battery compartment for one or more batteries, wherein the OSL reader includes an LED light source, wherein the battery compartment is electrically connected to the OSL reader, the sled slider motor and the display, and wherein the one or more batteries provide all of the power required for operating the OSL reader, the sled slider motor and the display.

Claims

1. A device comprising:

an optically stimulated luminescence (OSL) reader for reading one or more OSL sensors of a dosimeter sled;

a sled slider that is driven by a sled slider motor to position in turn each of the one or more OSL sensors of the dosimeter sled at a reading position where the OSL reader reads each respective OSL sensor;

a display for displaying information relating to reading the one or more OSL sensors; and

a battery compartment for one or more batteries,

wherein the OSL reader includes an LED light source,

wherein the battery compartment is electrically connected to the OSL reader, the sled slider motor and the display

wherein each of the one or more OSL sensors comprises;

an optically stimulated luminescent material (OSLM) mounted in one or more cylindrical cup-shaped energy compensating filters;

one or more discs of filter material sandwiched between a filtered side of the OSLM and a selected cylindrical cup-shaped energy compensating filter of the one or more cylindrical cup-shaped energy compensating filters.

2. The device of claim 1, further comprising the one or more batteries,

wherein the one or more batteries provide all of the power required for operating the OSL reader, the sled slider motor and the display.

3. The device of claim 2, wherein the one or more batteries comprise four AA batteries.

4. The device of claim 2, wherein the total weight of the one or more batteries is less than about 100 g.

5. The device of claim 2, wherein the total weight of device including the one or more batteries is about 2,700 g or less.

6. The device of claim 2, wherein the one or more batteries comprise four AA batteries.

7. The device of claim 2, wherein the total weight of the device excluding the one or more batteries is 2,600 g or less.

8. The device of claim 1, wherein the OSLM comprises an Al₂O₃:

C material.

9. The device of claim 1, wherein the device requires a current of 90 mA for less than 1 second to read each of the one or more OSL sensors.

10. The device of claim 1, wherein the device requires a current of 80 mA or less when in a powered idle state prior to reading the one or more OSL sensors.

11. The device of claim 1, wherein the device is mounted in a clamshell case.

12. The device of claim 1, wherein the device includes a handle for carrying the device in one hand.

13. The device of claim 1, wherein the sled slider is driven in a linear direction to position in turn each of the one or more OSL sensors.

14. The device of claim 1, wherein the sled slider is moved along rails to position in turn each of the one or more OSL sensors.