Invention Grant
- Patent Title: Hologram color printing method and apparatus using hologram medium light efficiency map
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Application No.: US17621890Application Date: 2020-12-02
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Publication No.: US12158727B2Publication Date: 2024-12-03
- Inventor: Sung Hee Hong , Young Min Kim , Ji Soo Hong , Jin Soo Jeong
- Applicant: Korea Electronics Technology Institute
- Applicant Address: KR Seongnam-si
- Assignee: Korea Electronics Technology Institute
- Current Assignee: Korea Electronics Technology Institute
- Current Assignee Address: KR Seongnam-si
- Agency: NSIP Law
- Priority: KR10-2020-0166175 20201202
- International Application: PCT/KR2020/017425 WO 20201202
- International Announcement: WO2022/118997 WO 20220609
- Main IPC: G03H1/04
- IPC: G03H1/04

Abstract:
Provided is a hologram printing method and apparatus using a hologram medium light efficiency map. A hologram printing method according to an embodiment emits a laser to a hologram medium, acquires an image by photographing light diffracted from the hologram medium, generates a light efficiency map of the hologram medium from the acquired image, and records hogels on the hologram medium by referring to the generated light efficiency maps of the hologram medium. Accordingly, light efficiency is measured on each hogel area, and hologram printing is performed by adjusting an intensity of a laser of each wavelength according to a hogel, so that uniformity of luminance and color of a hologram printing result can be enhanced.
Public/Granted literature
- US20220365483A1 HOLOGRAM COLOR PRINTING METHOD AND APPARATUS USING HOLOGRAM MEDIUM LIGHT EFFICIENCY MAP Public/Granted day:2022-11-17
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