Patent ID: 9244290
Filing Date: 2016-01-26
CPC Classification: G02B,G03F

Claim Text:
1. A method for coherence reduction, the method comprising: receiving, by an asymmetrical pulse stretcher, a first light pulse; wherein the asymmetrical pulse stretcher comprises multiple reflective components which define corners of an optical path forming a loop; wherein at least two reflective components of the multiple reflective components are positioned in a symmetrical manner in relation to each other with regard to at least one of orientation relative to the optical path or position relative to the optical path, and at least two reflective components of the multiple reflective components are positioned in an asymmetrical manner in relation to each other with regard to at least one of orientation relative to the optical path or position relative to the optical path; generating a sequence of multiple pulses, by the pulse stretcher, during a pulse sequence generation period and in response to the first light pulse; wherein the multiple reflective components introduce a coherence-related difference between at least two pulses of the multiple pulses; wherein the pulse sequence generation period does not exceed a response period of a detector; illuminating an area of an object by the multiple pulses; and detecting light from the area by the detector.