Patent ID: 8934097
Filing Date: 2015-01-13
Classification: G01B

Abstract:
1. A method, comprising: directing a beam of light on or about an optical axis that terminates at an image plane, wherein said beam passes through a first object and then through a second object and then through an optical element before propagating onto said image plane, wherein said first object is fixedly placed in line with said optical axis, wherein said first object is configured to impart a first pattern on said beam as it propagates on or about said optical axis, wherein said second object is fixedly placed in line with said optical axis, wherein said second object is located between, and spaced from, (i) said first object and (ii) said image plane, wherein said second object is configured to impart a second pattern on said beam and wherein said optical element is fixedly placed in line with said optical axis and located between and spaced from (i) said second object and (ii) said image plane, wherein said optical element is configured to simultaneously form an image of said first pattern and an image of said second pattern at said image plane; imparting a first pattern to said beam of light to produce a patterned beam, wherein said first pattern is imparted with said first object; imparting a second pattern to said patterned beam to produce a combined patterned beam, wherein said second pattern is imparted with said second object; imaging said combined patterned beam to a single plane to produce an imaged combined patterned beam, wherein said combined pattern beam is imaged with said optical element; and capturing said imaged combined patterned beam with a single detector to produce a captured imaged beam.