Color structured light 3d-imaging system
CA 2373284 A1 · Owner: Lu, Taiwei · Inventors: Zhang, Jianzhong; Lu, Taiwei
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for the imaging of three-dimensional objects is described that includes a structured light source projecting a focused image onto an object by passing either continuous or flashes of collimated source light through an optical grating and projection lens. Apertures in the grating, optionally transmitting a plurality of distinct colors, impose a known pattern on the projected light separated, by opaque areas which reduce color crosstalk to enhance accuracy. A camera responsive to the projected image captures an image of the projected light reflected from an object. Through short-duration image capture, particularly using a short-duration structured light flash …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 14, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 14, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2021.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.