• Patent Title: Micro-layered multi-phase lens design and optical system for enhanced pepper's ghost projection and other optical projections
  • Application No.: US17560963
    Application Date: 2021-12-23
  • Publication No.: US12169295B2
    Publication Date: 2024-12-17
  • Inventor: Taylor Scott Griffith
  • Applicant: IKIN, Inc.
  • Applicant Address: US CA San Diego
  • Assignee: IKIN, Inc.
  • Current Assignee: IKIN, Inc.
  • Current Assignee Address: US CA San Diego
  • Agency: Cooley LLP
  • Main IPC: G02B5/08
  • IPC: G02B5/08 G03B21/56
Micro-layered multi-phase lens design and optical system for enhanced pepper's ghost projection and other optical projections
Abstract:
A micro-layered structure for use in an optical projection system is configured to reflect incident light as multiple closely aligned reflections. A first semi-reflective transparent layer of the structure has a first index of refraction, a first front surface and a first rear surface. A second semi-reflective transparent layer of the structure has a second index of refraction different from the first index of refraction, a second front surface and a second rear surface. The second front surface abuts the first rear surface of the first semi-reflective transparent layer. Portions of the incident light are respectively reflected by the first front surface, first rear surface, second front surface and second rear surface as first, second, third and fourth reflections which collectively form a projection of the image perceived by a user of the optical projection system.
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