Patent ID: 11906744
Assignee: LG CHEM, LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A device for manufacturing a display lens including a holographic optical element formed by recording a hologram on a photosensitive substrate, in which a substrate is coated with a photosensitive material, through irradiation of laser beams, the device comprising:
a first laser light incidence unit configured to cause a first laser light, converging along a first irradiation direction, to be incident on a first surface of the photosensitive substrate; and
a second laser light incidence unit configured to cause a second laser light, diverging at a plurality of points along a second irradiation direction, to be incident on a second surface of the photosensitive substrate, the second surface being opposite from the first surface,
wherein the second laser light incidence unit includes a lens array having a top surface on which a plurality of lens portions configured to convert parallel light into diverging light are arranged, the device being configured such that the parallel light incident on the lens array is radiated as the second laser light, which is diverging light, toward the second surface of the photosensitive substrate at the plurality of points through the respective lens portions.