What purposes does the illuminance meter serve?
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).
Natural and artificial light sources are the two categories into which lighting may be separated. Natural lighting is commonly characterized as daylighting coefficient and natural illuminance, and it relates to the natural illuminance of interior and regional spaces, including light scattered by direct sunlight and light reflected from nearby objects. The effective area of the daylight opening divided by the total area of the interior floor is known as the daylighting factor. A typical home has a living area ratio of between 1/8 and 1/10 (window area/indoor floor area), and its daylight factor ranges from 1/5 to 1/15. The amount of illuminance provided by natural light is measured using the natural illuminance coefficient. It illustrates the link between exposure to indoor and outdoor light.It also reflects the local light climate (the sum of the natural light energy and the sunlight illuminance index of the climate).
Our government has developed health guidelines for indoor (including public place) illumination to guarantee that people live under adequate light. As an illustration, the sanitary standard for illumination in public spaces such as shopping malls (stores) is 100Lx; the sanitary standard for illumination on countertops in libraries, museums, art galleries, and exhibition halls is 100Lx; the sanitary standard for illumination in public bathrooms is 50Lx; bathrooms (showers, pools, bathtubs), 30Lx; and sauna, 30Lx.The office should have 300Lx for clerical work and 750Lx for typing and drawing; the illuminance requirements for visual work on the factory floor and production line are 1000Lx; 200Lx for hotels and public spaces; 200Lx for cashiers and reception areas; 1500-2000Lx for shop windows; 150-200Lx for hospital wards; 500Lx for emergency treatment areas; and 400-700Lx for schools and classes. for 300LX, etc.
Illuminance is often measured with an illuminance meter for this measurement type. The illuminance meter can accurately measure the intensity of several wavelengths (for example, the measurement of the visible light band and the UV band).
In short, lighting and human health, particularly eye care, have huge sanitary implications.
