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US 2019/0170919 A1Published application
Optical laminate
AssigneeFUJIFILM Corporation
InventorsYukito SAITOH, Daisuke KASHIWAGI
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Abstract
An optical laminate includes a wavelength selective reflective element which is provided with a reflection layer selectively reflecting light in a specific reflection wavelength region, and an absolute phase adjustment layer which is provided on at least one surface side of the wavelength selective reflective element and has optical isotropy, and the absolute phase adjustment layer has an in-plane distribution of at least one of a refractive index or a film thickness, and thus has an in-plane distribution of an optical path length in a film thickness direction.
Claims7
An optical laminate comprising:
- a wavelength selective reflective element which is provided with a reflection layer selectively reflecting light in a specific reflection wavelength region;
- and
- an absolute phase adjustment layer which is provided on at least one surface side of the wavelength selective reflective element and has optical isotropy,
- wherein the absolute phase adjustment layer has an in-plane distribution of at least one of a refractive index or a film thickness, and thus has an in-plane distribution of an optical path length in a film thickness direction, and
- the optical laminate reflects light in the specific reflection wavelength region by the wavelength selective reflective element, of light incident from the absolute phase adjustment layer side, as reflected light having a wavefront different from a wavefront of the incident light.
2 more elements
Dependencies are inferred from the claim text.