Xenon light source introduction:
The xenon lamp light source is an electric light source that emits light by using xenon discharge. Since the discharge substance is the inert gas xenon, the difference between the excitation potential and the ionization potential is small. The energy distribution of xenon lamp radiation spectrum is close to that of sunlight, and the color temperature is about 6000K. The partial spectral distribution of the continuous spectrum of the xenon lamp is almost independent of the change of the input power of the lamp, and the spectral energy distribution does not change much during the lifetime. The optical and electrical parameters of the xenon lamp have good consistency, and the working state is relatively less affected by changes in external conditions.
market situation:
LSH-X series light source is one of the necessary instruments of modern scientific research laboratory, which is highly valued by scientific researchers. Beijing Zhuoli Hanguang Instrument Co., Ltd. strives to become a xenon lamp light source with high-quality product quality and service through unremitting efforts. Basic guarantee for user laboratory.
Due to the large variety of xenon lamp light sources, you can consult the relevant literature of the experiment before choosing the instrument or directly consult the instrument manufacturer to roughly understand the required spectral range, illumination area and optical power (also known as light intensity) in order to select a more suitable light source.
Important parameters:
Electric power and optical power: Many documents and product descriptions refer to electric power when describing xenon lamp light sources. In fact, the information expressed by electric power is relatively simple, so when selecting the model, we must focus on the optical power and the optical band conditions. The size of optical power is related to many factors such as electrical power, optical structure, device material, and instrument structure. For example: The electrical power of LSH-X150 is 150W, and the optical power in the 400-1100nm band is 1.5W. The electric power of LSXS-500 is 500W, but the optical power at 400-1100nm is 11.3W
Optical power and optical power density: the unit of optical power is mw or w; the unit of optical power density is mw / cm2 or w / m2. In photocatalysis and photoelectric research, the concept of optical power density is even more important than optical power. Because when referring to the optical power density design to the light receiving area, for example: the energy density of the F / 1 condensing lens for LSH-X150 is 330mw / cm2; and the light receiving area: the imaging area under the F / 1 condensing lens is 4.5mm².
Point light source and parallel light:
Convergent point light sources are usually used for monochromator beam splitting, fiber introduction, or the use of focal point energy concentration effects (such as thermal effects).
The central divergent light source usually does not deal with the lamp source (the light is scattered in the form of spherical waves to the entire space). In photochemistry, usually a cold trap and a reactor cooperate to radiate light uniformly to the reflected substance, forming a so-called internal illumination Irradiation system (in the whole system, light is irradiated from the inside out).
Parallel light sources are generally light bulbs processed by optical devices, and ellipsoidal anti-mirror mirrors are used where high energy is required. In photochemistry, an externally irradiated system can be formed by a parallel light source and a reflecting sample part (light is irradiated from the reflecting system in the form of a parallel beam from outside to inside).
[As for those light sources that can form a convergent point light source, the central divergent light source and the parallel light source need to be discussed in specific situations. Don't generalize. 】
Features of short-arc xenon lamps:
The short-arc xenon lamp generally adopts a spherical xenon lamp bulb. The light beam is irradiated through the light outlet. The light outlet can be optionally added with a filter to obtain the desired optical band. The light outlet can be rotated to adjust the angle and the optical power output can be adjusted. But the price of this kind of light source is generally higher. And the life of the bulb is generally about 1000 hours (imported bulb).
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