Type of Xenon  Lamp 2010-12-9

High pressure Xenon Lamp can be divided into short-arc Xenon Lamp, a long arc Xenon Lamp and Xenon Lamp in Class 3.
High pressure xenon short arc lamp is a quartz bulb in the ellipsoid shell filled with 0.019 ~ 0.0266MPa high-pressure xenon gas, distances between the Xenon Lamp is less than 10mm. In the early 20th century, 40, Federal Republic of Germany Osland Development Research Center of the company the first of the noble gas laboratory short arc light source characteristics, after years of development and improvement, in 1951 to market the high pressure short-arc Xenon Lamp. In 1954, in Cologne, Germany World Fair for lighting and film, Zeiss - Ikon company demonstrated the first light source only as a film screening of Xenon Lamps. Followed by the Netherlands, Japan, the United States, Britain, Russia and China have also developed and produced a variety of film screenings with the Xenon Lamp. Since then, the high pressure xenon short arc lamps have been replaced most of the world cinema carbon arc light source into a new film screening.

? High pressure short-arc Xenon Lamps use its features can be divided into natural cooling, air-cooled and water-cooled 3. Low-power lamps using natural cooling, power in the 3000 ~ 5000W lamp with air cooling, a more powerful lamp with water cooling.
High pressure xenon short arc lamp light-emitting efficiency of about 40lm / W. DC ignition when leaving the cathode 0.07lc (lc for the pole distance) at, there is a spot called the highlight of the cathode, the radiation light of the point total radiation flux of the lamp more than 70%, which makes short-arc UHP Xenon Lamp as close to the ideal point source, is particularly conducive to optical system design and use. Power is 75 ~ 5000W lamp, and its peak brightness (50 ~ 650) × 106cd/m2; 2500W high-power lamps, the peak brightness of up to 2 × 109cd/m2.

High pressure short-arc xenon lamps are almost instantaneous startup characteristics of optical ─ ─ a start that the total flux of radiation from lamps 80%, 90% after 1 minute, 2.5 minutes to reach 100%. It is to be equipped with a dedicated starter and DC power, life is about 500 ~ 1500h. Can be horizontal or vertical lamp ignition. 1000W xenon lamp above the level required additional field ignition arc stabilization device. Because of high pressure xenon short arc lamps are filled with high-pressure xenon gas, storage, preservation should be placed in special boxes to prevent the explosion. Should be used to take the necessary measures for explosion-proof and anti-ultraviolet radiation.

High pressure xenon short arc lamps, high brightness, light-emitting region is small, good color, light color close to the sun and the light color and stable, widely used for film screenings, sun simulator, arc imaging furnace, D65 analog light concentrator, the printing plate, photocopiers, optical instruments, artificial climate simulation. 80 to prevent ozone in the development and explosion-proof structure of the new varieties.

Long-arc xenon lamp is a tubular quartz bulb in the amount of shell filled with high purity xenon gas, the second terminal is greater than 100mm from the letters have very thorium tungsten, barium cerium tungsten electrode tungsten or xenon lamps. In 1963, China's successful trial, light expert Cai Zuquan long arc xenon lamp. Long-arc xenon lamp has a natural cooling and water-cooled two. Natural cooling Xenon general charge (2.66 ~ 26.6) × 102Pa of xenon gas, water-cooled xenon lamp filling (1.33 ~ 5.32) × 104Pa of xenon, a color temperature of 5500 ~ 6000K, power from 102 ~ 2 × 106kW, luminous efficiency of 24 ~ 37lm / W. Water-cooled long-arc xenon lamp luminous efficiency of up to 60lm / W, the general life of 3000h. Long-arc xenon lamp power can do great, voltage characteristic has a positive resistance characteristic, so just install the boot device, the specifications with and without the ballast of the ballast of the two.

Long-arc xenon lamp radiation spectrum close to daylight, suitable for large area lighting, can be used as film photography, color photo-engraving, copying and other aspects of light; the same time, the color of cotton fabric testing, drugs and plastic aging test, plant cultivation , photochemical reaction, etc., also can be used for simulation of daylight and artificial light source aging. In addition, the high-power long-arc xenon lamp can be used as a continuous laser source.

80 years due to a light, and light-efficient light source, long-arc xenon lamp as the light source has been largely replaced.

Pulsed xenon lamp is the use of stored energy or chemical energy, in a very short span of time high-intensity xenon flash lamp. Mid-19th century, F. Talbot spark gap discharge as the first application of high-speed photography of the exposure light source, this is the first man-made pulse source. After the emergence of an inert gas pulse discharge light sources, only to pulsed light source really into the practical stage. 1935 to 1945, a series of pulsed light source in the commercial market. 50 years, pulse light into the industry. Pulsed xenon lamp are generally sealed in glass or quartz glass body composed of two electrodes, the shell filled with xenon and other inert gases. Pulsed light flash duration is 1 / 3 peak intensity corresponding to the time interval, called the pulse width. It is mainly the structure of the light source and lighting circuit decision. Existing pulsed light source pulse width is generally 10-9 ~ 10-2s, the instantaneous brightness of up to 1010cd/m2, is in addition to the laser light source outside the brightest man-made, it can reach the instantaneous flux 109lm, flash repetition rate of 1 to 106 beats / min, the working life of up to 106 times more luminous efficiency of 40lm / W.

Pulsed light source has the following 5: ① a variety of tubular xenon lamps. Peak flash energy can be used for medical and lighting from several focus photography to aerial observation for the ballistic and laser light focus on the millions. In addition there are U-shaped outer tube, spiral-shaped and disc-shaped and other shapes. ② Observation Instrument xenon strobe lights. Frequency of several thousand Hz, tens of thousands of watts of power. ③ signal pulse source. Frequency 1 ~ 3Hz, power 10 ~ 500W, life of 106 times. ④ photochemical reaction and microsecond pulsed light source with electronic equipment. ⑤ computer or other automatic device used to strobe indicator. Frequency of 102Hz, the number of watts of power.

Xenon discharge light by the electric light. Characteristics: ① radiation spectral energy distribution is close to daylight color temperature of about 6000K. ② continuous spectrum part of the spectral distribution of light input power is almost independent of spectral energy distribution in the life of almost constant. ③ lamp light, electrical parameters consistency, and work status by the external conditions, the impact of changes small. ④ light upon light, almost instantaneous stable light output; lights are out, you can re-ignite instantaneous. ⑤ low optical efficiency of light, a small potential gradient. High pressure xenon lamp can be divided into short-arc xenon lamp, a long arc xenon lamp and xenon lamp. High pressure xenon short arc lamp light-emitting efficiency of 40lm / W, while in DC is the ideal point of ignition source. Long-arc xenon lamp is an expert Cai Zuquan (chief engineer mentor) successful trial in 1963. Pulsed light source can be used as medical, lighting, photography, laser light, strobe light source observation instrument, the signal pulse light, photochemical reaction and microsecond pulsed light source with electronic equipment, computer or other automatic device strobe indicator.