The role of the lux meter
The lives of people are directly tied to illumination. Having enough light can help people avoid accidents. In contrast, too little light might make people feel tired more than the eyes themselves. Therefore, one of the main factors contributing to accidents and weariness is uncomfortable or inadequate lighting. According to data currently available, inadequate lighting is either a direct or indirect cause of around 30% of all occupational work accidents. The lighting regulations for stadiums are highly rigorous; a game will be impacted by too much or too little light.
What then are the hygiene criteria for contrast lighting inside homes? A crucial indicator in hygiene is illumination. Light is the term used to describe electromagnetic radiation, which can appear brilliant to the human eye. Vision is the perception that can result from light entering the eye. Visible light has a wavelength range of 380 to 760 nm and is what most people can see. (nanometers).
At present, lighting can be divided into two categories: natural lighting and artificial lighting. Natural lighting refers to the natural illuminance of indoors and regions, including direct sunlight scattered light and reflected light from surrounding objects, and is often expressed by daylighting coefficient and natural illuminance. The daylighting factor refers to the ratio of the effective area of the daylight opening to the indoor floor area. The daylight factor of a general residence is between 1/5 and 1/15, and the living area ratio is between 1/8 and 1/10 (window area/indoor floor area). The natural illuminance coefficient is used to evaluate the illuminance level of natural light. It reflects the relationship between indoor and outdoor light exposure. It also reflects the local light climate (the sum of the natural light energy and the sunlight illuminance index of the climate).
In order to ensure that people live under suitable light, our country has formulated health standards for indoor (including public places) illuminance. For example, the sanitary standard of illuminance in shopping malls (stores) in public places is ≥100Lx; the sanitary standard of illuminance on the countertops of libraries, museums, art galleries, and exhibition halls is ≥100Lx; the sanitary standard of illuminance in public bathrooms is ≥50Lx; 30Lx, sauna ≥ 30Lx. Foreign standards for indoor illuminance, such as Germany recommends several rated light intensity, the office includes 300Lx for clerical work, 750Lx for typing and drawing work; the illuminance requirements for visual work on the factory and production line are 1000Lx; 200Lx for hotels and public rooms; 200Lx for reception points and cashiers; 1500-2000Lx for shop windows; 150-200Lx for hospital wards, 500Lx for emergency treatment areas; 400-700Lx for schools and classrooms; canteens and indoor gyms For 300Lx etc.
