ホログラフィック光学素子の製造方法およびこれにより製造されたホログラフィック光学素子を含むディスプレイ装置

Japanese Patent JP7138785

B2

An embodiment according to an aspect of the present invention provides a manufacturing method of the holographic optical element including: irradiating a first laser in which light is spread in an irradiation direction on one surface of a photosensitive substrate; and irradiating a second laser in which light is collected in the irradiation direction on another surface of the photosensitive substrate, in which the first laser and the second laser may be irradiated so that a plurality of groups exists in which cross angles formed by a progress direction of the light by the first laser and the progress direction of the light by the second laser are different from each other at a predetermined location of a photosensitive area in which the light by the first laser and the light by the second laser cross on the photosensitive substrate.An embodiment according to another aspect of the present invention provides a display device including: a lens unit including a holographic optical element manufactured by an embodiment according to an aspect of the present invention; and a light irradiation unit irradiating light which is spread in an irradiation direction to the holographic optical element, in which the light irradiation unit irradiates light which is spread at an angle which is the same as an angle at which light of a second laser is collected.

De Han So
Jae Jin Kim
Min Su Sung
Boo Gong Shin

JP2021519519A

September 16, 2022

September 10, 2019

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LG HAUSYS,LTD.

G03H1/04; G02B5/32; G03B21/60; G03H1/22; G09F9/00

JP2016517036A
JP200779592A
JP2016128861A
JP2004226619A

US20180003961
US20180129165
KR1020160066942A

Shinya Mihiro
Takashi Watanabe

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