LEDs are extremely energy-efficient and can consume up to 90% less power than conventional fluorescent bulbs. As such they help to massively cut power costs. Because of low power usage, LEDs are becoming popular light sources in remote areas that use solar panels. LEDs also have long life of up to 60,000 hours compared to 1,500 hours for luminous bulbs. Moreover, they are durable and can withstand shock, vibration and extreme temperature. You can also improve safety by using LED since they produce 3.4 btu’s per hour compared to 85 for incandescent bulbs.
People are using LEDs in a variety of applications, including residential lighting, aerospace, architectural lighting, automotive, aviation, broadcasting, electronic instrumentation, entertainment and gaming, and more.
Especially in the micro-projection system, use of LED optics will increase over the years. It is because lighting uniformity and efficiency on spatial light modulators or SLM are two most important factors to gauge performance of micro-projection system. People often use tapered light pipe (TLP) and square compound parabolic concentrator (SCPC) as a beam shaper in LED-based micro projection system. By this, you will get SLM with uniform and efficient illumination.
However, TLP or SCPC has some