Analisis Reduksi Spektrum Sinar Biru Berbasis Papercraft Spectrometer pada Layar Ponsel Pintar Berjenis LED

Abstract

− As we have experienced together, smartphones are now a part of everyday life. Smartphone users in Indonesia are estimated to reach 191.6 million people (70.1% of the population) in 2021. The duration of use that tends to be long will have a negative effect on the body. This is related to exposure to blue light radiation produced by smartphone screens. The use of Light Emitting Diode (LED) technology is becoming increasingly popular on smartphone screens. Although it looks white, the light emitted from the smartphone screen has a wavelength of 400 – 490 nm, which belongs to the blue light category. Two common suggestions that can be made to reduce exposure to blue light radiation are reduces unnecessarily high light levels at night and attenuates shortwave components in the spectrum. However, there are still many users who don't realize that their smartphone has a blue light filter feature. Currently, low-cost spectrometers have been developed for self-assembly, for example the papercraft spectrometer from the Public Lab. This article will focus on the analysis of blue light reduction from LED smartphone screens. There were three smartphones that were observed, i.e., one unit each with an AMOLED, OLED and Super AMOLED screen. Observations were made when the phone's built-in blue light filter feature was activated or not. The results of the spectrum analysis show that there are differences in the intensity values when the blue light filter is not activated and is activated. When the phone's built-in blue light filter is activated, the intensity generated from the screen is lower than when the filter is off. Based on the blue light intensity reduction calculation, it was found that the average reduction of the three observed smartphones ’s filter was able to reduce blue light between 52.79% - 68.78%. Smartphone with Super AMOLED screen has better blue-light spectrum reduction performance, compared with its counterparts.