Human detection by optical readout thermal imaging sensor using evaporated Eu(TTA)3

Min Wang; Takashiro Tsukamoto; Shuji Tanaka

doi:10.1541/ieejsmas.136.473

Human detection by optical readout thermal imaging sensor using evaporated Eu(TTA)₃

Min Wang, Takashiro Tsukamoto, Shuji Tanaka

Research output: Contribution to journal › Article › peer-review

Abstract

This paper presents the design, fabrication and evaluation of an optical readout infrared thermal imaging sensor for human detection using vacuum evaporated Eu(TTA)₃ phosphor. Eu(TTA)₃ is served as an infrared (IR)-to-visible converter, which emits temperature dependent luminescence under specific ultraviolet (UV) excitation. The temperature sensitivity of luminescence intensity from Eu(TTA)₃ was measured as about -2.1%/oC. An optical readout system was designed to measure the luminescence changes of the sensor pixels. Eu(TTA)₃ on the sensor pixels is excited by a light emitting diode (LED) with 355 nm wavelength, and a visible luminescence map on the sensor pixels is projected onto a charge-coupled-device (CCD) camera. Thermal images of human were successfully obtained by using a 76 × 98 imaging sensor array with a carefully designed IR optics. The noise analysis shows that the noise-equivalent temperature difference (NETD) of the system is about 1.8 K.

Original language	English
Pages (from-to)	473-477
Number of pages	5
Journal	IEEJ Transactions on Sensors and Micromachines
Volume	136
Issue number	11
DOIs	https://doi.org/10.1541/ieejsmas.136.473
Publication status	Published - 2016 Jan 1

Keywords

Eu(TTA)
Infrared thermal imaging
Vacuum deposited luminescent phosphor

ASJC Scopus subject areas

Mechanical Engineering
Electrical and Electronic Engineering

Access to Document

10.1541/ieejsmas.136.473

Cite this

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title = "Human detection by optical readout thermal imaging sensor using evaporated Eu(TTA)3",

abstract = "This paper presents the design, fabrication and evaluation of an optical readout infrared thermal imaging sensor for human detection using vacuum evaporated Eu(TTA)3 phosphor. Eu(TTA)3 is served as an infrared (IR)-to-visible converter, which emits temperature dependent luminescence under specific ultraviolet (UV) excitation. The temperature sensitivity of luminescence intensity from Eu(TTA)3 was measured as about -2.1%/oC. An optical readout system was designed to measure the luminescence changes of the sensor pixels. Eu(TTA)3 on the sensor pixels is excited by a light emitting diode (LED) with 355 nm wavelength, and a visible luminescence map on the sensor pixels is projected onto a charge-coupled-device (CCD) camera. Thermal images of human were successfully obtained by using a 76 × 98 imaging sensor array with a carefully designed IR optics. The noise analysis shows that the noise-equivalent temperature difference (NETD) of the system is about 1.8 K.",

keywords = "Eu(TTA), Infrared thermal imaging, Vacuum deposited luminescent phosphor",

author = "Min Wang and Takashiro Tsukamoto and Shuji Tanaka",

year = "2016",

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language = "English",

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AU - Tsukamoto, Takashiro

AU - Tanaka, Shuji

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N2 - This paper presents the design, fabrication and evaluation of an optical readout infrared thermal imaging sensor for human detection using vacuum evaporated Eu(TTA)3 phosphor. Eu(TTA)3 is served as an infrared (IR)-to-visible converter, which emits temperature dependent luminescence under specific ultraviolet (UV) excitation. The temperature sensitivity of luminescence intensity from Eu(TTA)3 was measured as about -2.1%/oC. An optical readout system was designed to measure the luminescence changes of the sensor pixels. Eu(TTA)3 on the sensor pixels is excited by a light emitting diode (LED) with 355 nm wavelength, and a visible luminescence map on the sensor pixels is projected onto a charge-coupled-device (CCD) camera. Thermal images of human were successfully obtained by using a 76 × 98 imaging sensor array with a carefully designed IR optics. The noise analysis shows that the noise-equivalent temperature difference (NETD) of the system is about 1.8 K.

AB - This paper presents the design, fabrication and evaluation of an optical readout infrared thermal imaging sensor for human detection using vacuum evaporated Eu(TTA)3 phosphor. Eu(TTA)3 is served as an infrared (IR)-to-visible converter, which emits temperature dependent luminescence under specific ultraviolet (UV) excitation. The temperature sensitivity of luminescence intensity from Eu(TTA)3 was measured as about -2.1%/oC. An optical readout system was designed to measure the luminescence changes of the sensor pixels. Eu(TTA)3 on the sensor pixels is excited by a light emitting diode (LED) with 355 nm wavelength, and a visible luminescence map on the sensor pixels is projected onto a charge-coupled-device (CCD) camera. Thermal images of human were successfully obtained by using a 76 × 98 imaging sensor array with a carefully designed IR optics. The noise analysis shows that the noise-equivalent temperature difference (NETD) of the system is about 1.8 K.

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