METHOD FOR MANUFACTURING AERIAL IMAGE FORMING DEVICE

WIPO Patent Application WO/2020/235395

A1

The present invention comprises: a first step of manufacturing a first optical control member 13 by forming in a first transparent flat plate 11 a plurality of first vertical holes 12 passing through the first transparent flat plate 11 in the thickness direction and radially arranged with a reference point X as the center in plan view, with each vertical surface 17 on both sides of each first vertical hole 12 along the longitudinal direction thereof forming a first vertical optical reflection portion 18; a second step of manufacturing a second optical control member 16 by forming in a second transparent flat plate 14 a plurality of second vertical holes 15 passing through the second transparent flat plate 14 in the thickness direction, curved in an arc, and concentrically arranged with a reference point Y as the center in plan view, with each vertical surface 19 on both sides of each second vertical hole 15 along the longitudinal direction thereof forming a second vertical optical reflection portion 20; and a third step of stacking and bonding the first and second optical control members 13, 16 such that the reference points X, Y overlap with each other in plan view.

OTSUBO MAKOTO (JP)

PCT/JP2020/018995

November 26, 2020

May 12, 2020

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ASUKANET CO LTD (JP)

G02B30/56; G02B5/08

WO2019003730A1	2019-01-03
WO2008041616A1	2008-04-10
WO2013145983A1	2013-10-03

JP2014032394A	2014-02-20
JP2019053163A	2019-04-04
US20140253880A1	2014-09-11

NAKAMAE Fujio (JP)

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