Igoe, Damien and Parisi, Alfio 
ORCID: https://orcid.org/0000-0001-8430-8907 and Carter, Brad ORCID: https://orcid.org/0000-0003-0035-8769
(2013)
Characterization of a smartphone camera's response to ultraviolet A radiation.
Photochemistry and Photobiology, 89 (1).
pp. 215-218.
ISSN 0031-8655
![[img]](http://eprints.usq.edu.au/style/images/fileicons/text.png)
|
Text (Accepted Version)
Igoe_Parisi_Carter_PP_2012_AV.pdf Download (207kB) |
Abstract
As part of a wider study into the use of smartphones as solar ultraviolet radiation monitors, this paper characterises the ultraviolet A (UVA)(320-400 nm) response of a consumer CMOS based smartphone image sensor in a controlled laboratory environment. The CMOS image sensor in the camera possesses inherent sensitivity to UVA, and despite the attenuation due to the lens and neutral density and wavelength-specific bandpass filters, the measured relative UVA irradiances relative to the incident irradiances range from 0.0065% at 380 nm to 0.0051% at 340 nm. In addition, the sensor demonstrates a predictable response to low-intensity discrete UVA stimuli that can be modelled using the ratio of recorded digital values to the incident UVA irradiance for a given automatic exposure time, and resulting in measurement errors that are typically less than 5%. Our results support the idea that smartphones can be used for scientific monitoring of UVA radiation.
|
Statistics for this ePrint Item |
Actions (login required)
 |
Archive Repository Staff Only |