智能手机自带近红外色度计

IF 2.2 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Sensors Letters Pub Date : 2024-11-18 DOI:10.1109/LSENS.2024.3501772

Khaled Bin Easin;Mohiminur Rahman Ifty;Md. Sadik Al Rayhan;Saptami Rani;Nazmun Nahar Maria;Md. Arafat Hossain;Protik Chandra Biswas

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引用次数: 0

摘要

利用手机内置的近红外（NIR）发射器（$\Delta \lambda \approx 770 \!-\! 1000$ nm）和微距镜头互补金属氧化物半导体（CMOS）相机，首次开发出了智能手机专用的近红外（NIR）色度计。发射的近红外光通过低成本的多模塑料光纤引导照亮测试样品，并利用手机的CMOS摄像头收集并数字化通过样品的透射光。我们开发了一个易于使用的定制安卓应用程序来操作这款超低成本（${{\lambda }_p} \approx 930$ nm）的仪器，它符合仪器的工作波长（$\Delta \lambda \approx 910 \!-\! 980$ nm）。

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Smartphone Self-Contained NIR Colorimeter

A self-contained smartphone-based near infrared (NIR) colorimeter is reported for the first time by utilizing the inbuilt NIR emitter (

$\Delta \lambda \approx 770 \!-\! 1000$

nm) and macrolens complementary metal-oxide semiconductor (CMOS) camera of the phone. The emitted NIR light is guided through a low-cost multimode plastic fiber to illuminate the test sample, and the phone's CMOS camera is utilized to collect and digitize the transmitted light through the sample. An easy-to-use customized Android app has been developed to operate this ultra-low-cost (<$2)>${{\lambda }_p} \approx 930$ nm, which complies with the operating wavelength band (

$\Delta \lambda \approx 910 \!-\! 980$

nm) of this instrument.

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