Matrix infrared light and traditional LED mainly distinguish from the following points:
1. Brightness: The optical output of a single traditional LED is generally about 5-15mW. Although there are 40-50mW or more power LEDs available today, it is still not comparable to a single dot-matrix LED and due to thermoelectricity The separate basic design makes it difficult to dispose of heat. The optical output of the largest dot matrix infrared lamp can reach about 2000mW or more. In other words, the sum of the brightness of one or two hundred traditional LEDs is equal to the brightness of a dot-matrix infrared lamp. Therefore, the very small part volume can see the target object at a long distance.
2. Volume: Since the matrix-type infrared lamp is a highly integrated LED, the volume is much smaller than the sum of the LEDs with the same brightness.
3, light angle: traditional LED confined and poor design and heat treatment, in order to accommodate the heat, the single can not be too much light, the irradiation distance will be limited, so more production in a small angle, concentrated energy in order to shine far The light emission angle is generally 8°-30°, so a light beam like a flashlight is formed. The central image is bright and white and the surrounding is too dark to see clearly. The original angle of the LED of the dot-matrix LED is about 150°, and different angles can be changed by optical means. Indoors can evenly illuminate the entire space, while the beams of other LEDs can not be achieved, and the use of ultra-long distance outdoor, the volume of its overall product is much smaller than the average traditional LED products.
4, long life: Due to the heat treatment of matrix infrared lamps and the production of different materials, its life is about five to ten times the life of traditional LED. In the first two years, the human eye could hardly see the attenuation of illumination.
5. The quality grade of the dot matrix infrared lamp is generally military grade, higher than the industrial grade, and certainly higher than the commercial grade LED. Simply put, it will not be bad under normal use.
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Ultra-precision cutting Ultra-precision cutting refers to the cutting method whose surface roughness is less than Ra0.04μm. The key problem in ultra-precision machining is that the thin surface layer of 0.1μm is cut in the final step. This requires both an extremely sharp tool with a radius of the blunt circle of the tool at the nanoscale and a tool with enough durability to keep it sharp. At present, only diamond tools can meet the requirements. In ultra-precision cutting, the cutting speed should be very high and the cutting amount should be small to ensure that the residual area on the workpiece surface is small, so as to obtain minimal surface roughness
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