研究目的
To evaluate the initial and operational parameters of non-directional household lamps, including their lumen maintenance factor, and assess their quality against manufacturer declarations and regulatory requirements.
研究成果
The study found that while initial parameters of most lamps aligned with manufacturers' declarations, operational parameters, especially the lumen maintenance factor for LED lamps, often did not meet regulatory requirements. The most advantageous substitution for traditional incandescent bulbs was identified, but the authors caution against generalizing the findings due to the limited sample size.
研究不足
The study was conducted on single copies of lamps, limiting the generalizability of the findings to the entire production of the tested light sources. Additionally, the assessment of discomfort glare was not included, which could be relevant in specific lighting applications.
1：Experimental Design and Method Selection:
The study involved testing both initial and operational parameters of selected non-directional lamps for home use, including photometric, colorimetric, electrical, and functional parameters. The methodology followed regulatory requirements and standards.
2：Sample Selection and Data Sources:
The tested objects were commercially available lamps, including halogen bulbs, compact fluorescent lamps, and LED lamps, serving as substitutes for traditional 60W incandescent bulbs.
3：List of Experimental Equipment and Materials:
The measurement stand included Ulbricht's sphere, PCR 2000M power supply by KJKUSUI, Norma 400 power analyzer by Fluke, LMT PHOTOMETER B510 photometer, and an X4 Light Analyzer spectrophotometer by Gigahertz – Optik.
4：Experimental Procedures and Operational Workflow:
Initial parameters were tested first, followed by operational measurements over defined periods. Measurements were carried out in a photometric darkroom.
5：Data Analysis Methods:
The analysis included assessing compliance with regulatory requirements, calculating luminous efficacy, and evaluating the operational drop in luminous flux.
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