Apparatus and method for projecting laser pattern with reduced speckle noise
AssigneeIntelligent Automation Systems, Inc.
InventorsSteven J. Gordon, Faycal E. K. Benayad-Cherif
Life of this patent
Estimating the term…
Loading patent…
AssigneeIntelligent Automation Systems, Inc.
InventorsSteven J. Gordon, Faycal E. K. Benayad-Cherif
Estimating the term…
An illuminating apparatus is for use with a visual sensory apparatus, for projecting a light pattern onto a surface to be viewed by the sensory apparatus. The illuminating apparatus comprises: a light source; a patterniser for constraining light emitted from the source to produce on the surface, a light pattern having a light interface, the interface having an extended dimension. The light pattern is caused to move relative to the surface, parallel to the extended dimension of the light interface. The pattern may comprise a plurality of extended straight line interfaces, each interface being parallel to the other interfaces of the plurality. Rather than straight, the plurality may be circular and concentric. Rather than a plurality, the pattern may comprise a single straight line or circular light interface. The motion of the light pattern relative to the surface minimizes any speckle pattern that might arise from optical interference, below the degree of speckle that would be presence if the pattern were not moving. The pattern may be made to move by moving the light source, or a mirror or prism interposed in the optical path from the light source to the surface.
An illuminating apparatus for use with a visual sensory apparatus, for projecting a light pattern onto a surface to be viewed by said sensory apparatus, said surface having a characteristic roughness, said illuminating apparatus comprising:
An apparatus for registering the configuration of a surface extending over a portion of a viewing field, said surface having a characteristic roughness, said apparatus comprising:
A method for projecting a light interface pattern onto a surface having a characteristic roughness, said method comprising:
Dependencies are inferred from the claim text.