US 12,287,243 B2
Method and optical system for characterizing displays
David Carmona Ballester, Santa Cruz de Tenerife (ES); Juan Manuel Trujillo Sevilla, Santa Cruz de Tenerife (ES); Sergio Bonaque Gonzalez, Santa Cruz de Tenerife (ES); and Jose Manuel Rodriguez Ramos, San Cristóbal de la Laguna (ES)
Assigned to WOOPTIX S.L., Madrid (ES)
Appl. No. 17/594,945
Filed by WOOPTIX S.L., Madrid (ES)
PCT Filed Apr. 29, 2020, PCT No. PCT/EP2020/061899
§ 371(c)(1), (2) Date Nov. 3, 2021,
PCT Pub. No. WO2020/225053, PCT Pub. Date Nov. 12, 2020.
Claims priority of application No. 19382346 (EP), filed on May 7, 2019.
Prior Publication US 2023/0152162 A1, May 18, 2023
Int. Cl. G01J 9/00 (2006.01); G01J 1/42 (2006.01); H04N 23/957 (2023.01)
CPC G01J 9/00 (2013.01) [G01J 1/42 (2013.01); H04N 23/957 (2023.01); G01J 2009/002 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for characterizing and operating a display, comprising:
an input stage wherein at least one test signal is provided as input to the display, wherein said test signal comprises a series of signals with a predetermined time interval of at least 0.05 ms between consecutive signals, and
a capture stage for obtaining display output information, said capture stage comprising:
capturing, by at least one acquisition system placed at a distance from the display, an impulse response of the display in response to the at least one provided test signal, wherein said capturing of an impulse response comprises capturing a wavefront phase of the light emitted by the display in response to the at least one test signal, wherein the at least one acquisition system comprises a direct wave-front sensor, and wherein the direct wave-front sensor is a Shack-Hartmann sensor.