A packaged light emitting device includes a frame, a cover, and a light emitting device. The light emitting device is disposed between the cover and the frame. A portion of the cover is flexible and a portion of the cover is rigid. The cover includes a flange and is attached to the frame by positioning...http://www.google.co.uk/patents/US7201495?utm_source=gb-gplus-sharePatent US7201495 - Semiconductor light emitting device package with cover with flexible portion
