Patent ID: 8704150

Claim:
An optical apparatus, comprising: a primary beam splitter configured to split an incident light beam into a primary plurality of light beams and to direct a first beam of the primary plurality of light beams in a first direction and a second beam of the primary plurality of light beams in a second direction orthogonal to the first direction; a secondary beam splitter positioned in beam paths of the first and second beams of the primary plurality of light beams to split the first and second beams of the primary plurality of light beams into a secondary plurality of light beams and to split the second beam of the primary plurality of light beams into a tertiary plurality of light beams, wherein the secondary beam splitter is oriented to direct a first beam of the secondary plurality of light beams and a first beam of the tertiary plurality of light beams orthogonal to one another, and a second beam of the secondary plurality of light beams and a second beam of the tertiary plurality of light beams both parallel to one another and orthogonal to the first beam of the secondary plurality of light beams and the first beam of the tertiary plurality of light beams; and a primary plurality of beam reflectors positioned to redirect the secondary and tertiary plurality of light beams toward a common detector.