Light guide plate made of lead-free glass having a high refractive index and image display device using a light guide plate

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United States of America Patent

PATENT NO 11543658
APP PUB NO 20200218073A1
SERIAL NO

16801106

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Abstract

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Provided is a light guide plate for an image display device which uses lead-free glass, has excellent color reproducibility and a light weight, and may obtain a wide viewing angle. A light guide plate for an image display device, which guides image light inputted from an image display element and outputs the image light toward a user's pupil, is configured to be made of lead-free glass having a refractive index of 1.8 or more with respect to a wavelength of the image light, and to have internal transmittance of 0.6 or more with respect to a wavelength of 400 nm when a plate thickness is 10 mm.

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Patent Owner(s)

  • 501 HOYA CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kogure, Yasuo Toda, JP 25 196

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