Nondestructive holographic reconstruction
CA 1322116 C · Owner: Redfield, Stephen R. · Inventors: Redfield, Stephen R.; Hesselink, Lambertus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PCT/US 88 04713, ABSTRACT OF THE DISCLOSURE method for promoting enhanced nondestructive reconstruction of holograms recorded in photorefractive media (10) involves control of the polarization states of the reconstruction beam (24) and the recording beams (24 26), control of the cummulative recording energy and use, of a relatively high external field applied across the media (10) during recording which is subsequently reduced during reconstruction. The resulting reconstruction history characteristics are selectively tailored by adjusting the polarization and intensity of the reconstruction beam (24), the recording geometry and the, applied voltage (40) during reconstruction and recording …
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
- Granted September 14, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 14, 2010.
- 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.