Patent ID: 11947109
Assignee: FUJIFILM CORPORATION
Field: Optics (Instruments)
Classification: CPC G  B | IPC B  G

Claim 0:
1. A projection image-displaying member comprising, in this order:
a first polarization converting layer;
at least one selectively reflecting layer; and
a second polarization converting layer,
wherein the first polarization converting layer and the second polarization converting layer are layers formed by fixing a helical alignment structure of a liquid crystal compound,
a number of pitches in the helical alignment structure and a film thickness satisfy all relational expressions below,
when the first polarization converting layer has a number of pitches x1 and a film thickness y1 (unit: μm),

0.3≤x1≤2.0 and  (i)

y1≥1.86x1+0.13, and  (ii)

when the second polarization converting layer has a number of pitches x2 and a film thickness y2 (unit: μm),

0.25≤x2≤2.0,  (iii)

y2≤1.37x2+5.5, and  (iv)

y2≥1.37x2+0.25.  (v)