Title:
LIGHT MODULATION METHOD, LIGHT MODULATION PROGRAM, LIGHT MODULATION DEVICE, AND ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/017289
Kind Code:
A1
Abstract:
A light modulation device (2A) is configured so as to be provided with: a phase modulation-type spatial light modulator (20) that has multiple pixels arranged in a two-dimensional manner, and modulates the phase of inputted light for each pixel via a modulation pattern; a modulation pattern setting unit (31) that sets a target modulation pattern for modulating the phase of light; a correction coefficient setting unit (32) that sets a correction coefficient (α) in which α ≥ 1 according to the pixel structure characteristics of the spatial light modulator (20) and the pattern characteristics of the target modulation pattern; and a modulation pattern correcting unit (35) that determines a corrected modulation pattern to be presented to the multiple pixels of the spatial light modulator (20) by multiplying the target modulation pattern by the correction coefficient (α). A light modulation method, a light modulation program, the light modulation device, and an illumination device that enable the generation of unnecessary zero-order light by the spatial light modulator to be minimized are achieved according to this configuration.
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Inventors:
MATSUMOTO NAOYA (JP)
INOUE TAKASHI (JP)
TAKIGUCHI YUU (JP)
INOUE TAKASHI (JP)
TAKIGUCHI YUU (JP)
Application Number:
PCT/JP2013/068742
Publication Date:
January 30, 2014
Filing Date:
July 09, 2013
Export Citation:
Assignee:
HAMAMATSU PHOTONICS KK (JP)
International Classes:
G02F1/01; G02F1/13
Domestic Patent References:
| WO2003036368A1 | 2003-05-01 | |||
| WO2009072563A1 | 2009-06-11 |
Foreign References:
| JP2006072280A | 2006-03-16 |
Other References:
GABRIEL MILEWSKI ET AL.: "Diffractive optical elements designed for highly precise far-field generation in the presence of artifacts typical for pixelated spatial light modulators", APPLIED OPTICS, vol. 46, no. 1, 1 January 2007 (2007-01-01), pages 95 - 105
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
Yoshiki Hasegawa (JP)
Yoshiki Hasegawa (JP)
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