A light source refers to an object that can emit electromagnetic waves in a certain wavelength range (including visible light and invisible light such as ultraviolet, infrared, and X-rays). Usually refers to a luminous body that emits visible light. Anything that can emit light by itself is called a light source, also known as a luminous body, such as the sun, stars, lamps, and burning substances. But like the surface of the moon, desktops, etc., they rely on them to reflect external light so that people can see them. Such reflective objects cannot be called light sources. In our daily life, the light source of visible light is inseparable, and the light source of visible light and invisible light is also widely used in industrial and agricultural, medical and national defense modernization. Visible light source is often used for daily lighting or displaying signals; invisible light source is usually used for special purposes such as medical treatment, communication, night photography, etc. The study of light source spectrum can also analyze the structure and composition of luminescent substances. The light source is mainly divided into: thermal radiation light source, for example, sun, incandescent lamp; gas discharge light source, for example, carbon lamp, mercury lamp, fluorescent lamp, etc. The laser is a new type of light source, which has the characteristics of concentrated emission direction, high brightness, excellent coherence and good monochromaticity. So how to choose a suitable light source in the experiment? The answer is obviously to choose the right light source, first of all to determine the wavelength range used. So now we will briefly introduce the characteristics of several light sources commonly used in life, experiments and scientific research without losing focus. The first kind: Xenon lamp: 200-2500nm (250-1800nm) 1: With high radiation, the color temperature is up to 6000K 2: Small luminous area, easy to use as collimated beam 3: Wide spectrum coverage 4: The design structure of the back reflector can improve the light use efficiency by more than 50% 5: High output energy in the ultraviolet band, suitable for excitation light source 6: Simulated solar spectrum The second kind: deuterium lamp: 200-400nm 1: Very efficient ultraviolet light source 2: Spectral smoothing in the outer band 3: There are multiple characteristic spectral peaks, which can be used as wavelength calibration light source The third kind: Tungsten bromide lamp: 700nm (300-2500nm) 1: High output stability 2: Wide coverage 3: The design structure of the mirror can improve the light use efficiency by more than 50% 4: The spectrum is continuous and smooth in the range 5: To calibrate to become a standard white light source Fourth: infrared light source: 1-16μm 1: Wide spectrum coverage 2: Long service life Other light sources: 1: Low-pressure mercury lamp light source: has multiple characteristic peaks, used for wavelength correction of spectral instruments, or used as an ultraviolet excitation light source Spectral radiance standard light source: used for response correction of spectral instrument system 2: Spectral radiance standard light source: used for response correction of spectroscopic instrument system 3: Sunlight simulator: used to simulate sunlight 4: Composite light source: According to the needs of spectral coverage, it is composed of two lamps optimized by optical path
We are specialized in Bamboo Fiber Plastic Tableware. We have the perfect after-sales service and technical support. Our Bamboo Fiber Plastic tableware is modern, functional and comfortable. We focused on international export product development, production and sales. We have improved quality control processes to ensure each export qualified product.
A large quantity of favorably! Look forward to your cooperation!
Bamboo Fiber Tableware,Bamboo Fiber Dinnerware Sets,Bamboo Fiber Bowl,Bamboo Fiber Plate Set Fulike Houseware&Gifts Co.,Ltd. , https://www.cnfulike.com
Zhuoli interprets "how to choose the light source" for you