OSRAM Opto Semiconductors GmbH developed a 1A green LED with a luminous flux of 191 lm, a luminous efficiency of 48 lm/W and a wavelength of 527 nm, and was held in Las Vegas, USA, in 2007. Released at the exhibition from September 16 to 21 (speech serial number: D1). The chip size is 1mm square. At 350 mA, the luminous flux is 100 lm, the luminous efficiency is 81 lm/W, and the wavelength is 532 nm. In addition, a product having a chip size of 460 μm × 255 μm and a luminous efficiency of 107 lm and an oscillation wavelength of 532 nm when driven by 20 mA was also experimentally produced. Both products are brighter than the company's original products. A light source as an image display device such as an LED projector is conceived.
This time, the brightness has been improved by improving the "Droop" phenomenon. Droop refers to a phenomenon in which the luminous efficiency of an LED having InGaN as a light-emitting layer such as a blue LED or a green LED is lowered when the input current density is increased. Reading era
Hangzhou theater stage lighting design projection lamp is good at light and simple minimalist lighting design 07 lighting market analysis
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