Patent ID: 8169672
Filing Date: 2012-05-01
Classification: G02B,G03B,H04N

Abstract:
1. An illuminating device for illuminating a target with light emitted from at least one light source of a light source unit, comprising: a light-beam dividing element configured to divide the light emitted from the at least one light source into multiple light beams in a first plane; a light-beam illumination element configured to receive the multiple light beams in the first plane and further configured to illuminate the target with the multiple light beams; and a light-beam combining element configured to cause the multiple light beams to overlap in the first plane on the target, wherein a distance between the light-beam dividing element and the light-beam illumination element is larger than a focal length of the light-beam dividing element and a focal length of the light-beam illumination element.