Infrared thermometer

• US 6,751,497 B2
• Filed: 03/14/2002
• Issued: 06/15/2004
• Est. Priority Date: 06/08/1998
• Status: Expired due to Fees

• Current Assignee: Advanced Monitors Corporation
• Original Assignee: Advanced Monitors Corporation
• Inventors: Fraden, Jacob
• Primary Examiner(s): SHAW, SHAWNA JEANNINE
• Application Number:
  US10/098,069
• Publication Number:
  US 20020123690A1
• Time in Patent Office: 824 Days
• Field of Search: 600/474, 600/549, 702/130, 702/135, 374/121, 374/158, 374/208, 374/209
• US Class Current: 600/474
• CPC Class Codes: G01J 5/04 Casings
• CPC Class Codes: G01J 5/046 Materials; Selection of thermal materials
• CPC Class Codes: G01J 5/049 Casings for tympanic thermometers
• CPC Class Codes: G01J 5/064 Ambient temperature sensor; Housing temperature sensor; Constructional details thereof
• CPC Class Codes: G01J 5/10 using electric radiation detectors
• CPC Class Codes: G01J 5/16 Arrangements with respect to the cold junction; Compensating influence of ambient temperature or other variables
• CPC Class Codes: G01J 5/24 Use of specially adapted circuits, e.g. bridge circuits
• CPC Class Codes: G01J 5/53 Reference sources, e.g. standard lamps; Black bodies
• CPC Class Codes: G01J 5/80 Calibration using comparison with reference sources G01J5/52

Abstract

An infrared (IR) thermometer for performing temperature measurement of an object without having contact with the object. The IR thermometer comprises at least one IR sensing element which, upon exposure to IR radiation, produces a response. The IR sensing element comprises a flat themistor flake supported by a substrate. The IR thermometer further comprises a processing circuit which analyzes the response to predict the steady-state response of the at least one IR sensing element and temperature of the object. In one embodiment, the processing circuit may obtain two or more responses separated by a predetermined period of time to predict temperature of the object. The processing circuit may also associate reference data in its prediction algorithm.

Claims

1. An infrared thermometer operative to measure the internal body temperature of an animal, comprising:

a handle portion extending along a first axis,

an elongate, curved arm extending along a second axis curving transverse to and intersecting said first axis when disposed in a first position for measuring the internal body temperature of the animal, said arm including a distal portion and a proximal portion extending along said second axis, said distal portion configured for insertion into an ear canal of the animal and having at least one infrared sensing element for receiving infrared radiation, and said proximal portion coupled to said handle portion,

wherein said curved arm is pivotally coupled to said handle portion to allow movement of said curved arm to a second position for storage.

2. The infrared thermometer of claim 1, further comprising a removable protective cover on said distal portion for protecting said distal portion from contamination during insertion into the ear canal.

3. The infrared thermometer of claim 1, wherein said proximal portion is cylindrical.

4. The infrared thermometer of claim 1, wherein said handle portion includes a push button operative by a user to perform and record a temperature measurement.

5. The infrared thermometer of claim 4, wherein said handle portion includes an electronic display operative to display the temperature measurement.

6. An infrared thermometer operative to measure the internal body temperature of an animal, comprising:

a case configured as a handle portion extending along a first axis,

an elongate, curved arm extending along a second axis curving transverse to and intersecting said first axis when disposed in a first position for measuring the internal body temperature of the animal, said arm including a distal portion and a proximal portion extending along said second axis, said distal portion configured for insertion into an ear canal of the animal and having at least one infrared sensing element for receiving infrared radiation, and said proximal portion pivotally coupled to said case to allow movement of said curved arm to a second position for storage, and

control components contained within said case and electrically coupled to said infrared sensing element, said control components operative to compute the internal body temperature of the animal.

7. The infrared thermometer of claim 6, further comprising a removable protective cover on said distal portion for protecting said distal portion from contamination during insertion into the ear canal.

8. The infrared thermometer of claim 6, wherein said proximal portion is cylindrical.

9. The infrared thermometer of claim 8, wherein said case includes an electronic display operative to display the temperature measurement.

10. The infrared thermometer of claim 6, wherein said case includes a push button operative by a user to perform and record a temperature measurement.