COMPARISON OF LIGHT INTENSITY FROM INNOVATIVE LAMP COVERS AND THE EFFICIENCY OF THE MATERIALS USED TO CREATE EACH TYPE OF LAMP COVER

Abstract

The objective of this research was to design and develop an innovative lamp cover using recycled materials and to evaluate the luminous efficiency of eight different material types: compact discs, aluminum cans, future boards, clear plastic sheets, foam, wood, cardboard, and foil. The experimental variables were controlled using a 15-watt LED bulb installed at a height of 2 meters, enclosed within a frustum of a quadrilateral pyramid structure with a 40-degree incline. The light intensity data were collected using an EXTECH 407026 lux meter in accordance with CIE 1931 standards. Data analysis was performed using descriptive statistics, Independent Samples t-tests to compare the illumination levels between each material type and the control group (without a cover), and One-way Analysis of Variance (ANOVA) to determine the significant differences in mean light intensity among the eight material types.
The results indicated that the type of material significantly influenced light intensity (p < 0.05). Foil yielded the highest mean intensity at 77.6 lux, followed by foam 74.0 lux and aluminum cans 70.1 lux, all of which were significantly higher than the control group 30.4 lux. The findings demonstrate that the strategic design of lamp covers, utilizing optimized geometric dimensions combined with high-reflectivity and superior light distribution materials, can enhance lighting efficiency by more than 155.26%. This innovation not only improves the working environment in compliance with occupational health and safety standards but also promotes energy efficiency and sustainable waste management based on circular economy principles within the workplace.