What kinds of microscope light sources are there?

Halogen lamp has stronger brightness than incandescent lamp, its spectrum is close to sunlight, and its color temperature changes little with time. Also known as cold light source, it has small volume, low calorific value and high brightness per unit area. It is suitable for microphotography and projection. Commonly used 6V 12W, 12V 50W,12v10.

2. Low pressure tungsten lamp

The filament is made of tungsten wire and sealed with argon, which is suitable for primary and intermediate metallographic microscope observation. 6 V 15 W and 12V 30W are commonly used, but the exposure time of high-power micrography is a little longer, so it is widely used because of its low price and long life.

3. Ultra-high pressure mercury lamp

This is a high brightness ultraviolet lamp with point light source, which is suitable for fluorescence observation mode of microscope. The spectrum is linear, and the ignition device needs to be started. Commonly used are HBO 100 W and HB0 200W.

4. Xenon lamp

Xenon lamps are usually short-arc xenon lamps, which use inert gas xenon as light-emitting element. Its spectrum is close to sunlight, and xenon lamps have good color quality and high brightness, with a color temperature of about 6000k K K. Xenon lamps are widely used in high-speed color photography, large-field projection, video observation and other fields.

Because the xenon lamp needs a starting device when it is ignited, it is large in size and complex in structure, so it is expensive.