Resources Contact Us Home
LED unit

Image Number 4 for United States Patent #8120048.

An LED unit includes an LED and a lens mounted on the LED. The lens includes a light-incident face adjacent to the LED, a light-emergent face remote from the LED, and a light-reflecting face between the light-incident face and the light-emergent face. The light-incident face includes a first light-incident face facing the LED, and the light-emergent face includes a first light-emergent face located opposite to the first light-incident face. The first light-incident face is a continuously curved face which has a curvature, along a bottom-to-top direction of the lens, firstly decreasing gradually to a first value; then increasing gradually to a second value; then decreasing gradually again to a third value; and then increasing gradually again. The light-emergent face has a first light-emergent face located above the first light-incident face and having a varied curvature.

  Recently Added Patents
Voltage detection apparatus and combination circuit
Focus detection device and imaging apparatus having the same
Stable liquid VEGF antagonist formulations
Container pack
Shipping container explosives and contraband detection system using nuclear quadrupole resonance
Storage apparatus and storage apparatus management method performing data I/O processing using a plurality of microprocessors
  Randomly Featured Patents
Portable apparatus incorporating a sound output device
Pump swash plate control linkage
Self-drying condensate pad for beverage and food service
Transactions for preventing loan defaults, short sales, and foreclosures
Printed-circuit board
Gaming machine determining payout symbol in second game requiring more player's involvement
Structure for preventing refrigerant from leaking in heat exchanger and method for forming the same
Methods and apparatus for generating maintenance messages
Wristwatch with electronic display
Managing multiple web services on a single device