Title:
SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, PROGRAM, AND LIGHTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/250993
Kind Code:
A1
Abstract:
A signal processing device according to the present technology performs, as calculation processing for a phase distribution for reproducing a targeted light intensity distribution on a projection surface by spatial light phase modulation for incident light, calculation processing that satisfies (condition 1): a feedback loop is used in which updating of the phase distribution is repeated by including a nonlinear ray optics model that is a ray optics model including a nonlinear term, and an inverse operation model of a model obtained by linearizing the nonlinear ray optics model, finding an error distribution between the targeted light intensity distribution and a light intensity distribution calculated on the basis of a provisional value of the phase distribution by the nonlinear ray optics model, and with the value obtained by multiplying the error distribution by a feedback gain as a light intensity correction value and with an output when the light intensity correction value is inputted to the inverse operation model as a phase correction value, adding the phase correction value to the provisional value.
Inventors:
TAHARA HIROYUKI (JP)
Application Number:
PCT/JP2021/015196
Publication Date:
December 16, 2021
Filing Date:
April 12, 2021
Export Citation:
Assignee:
SONY GROUP CORP (JP)
International Classes:
G02F1/01; G02B26/06; G02F1/13; G02F1/133; G02F1/13357; G02F1/1347; G03B21/00
Foreign References:
| JP2017532583A | 2017-11-02 | |||
| CN103325129A | 2013-09-25 | |||
| JP2005292662A | 2005-10-20 | |||
| JP2017520022A | 2017-07-20 |
Attorney, Agent or Firm:
IWATA, Masanobu et al. (JP)
Download PDF: