• Patent Title: FREE SPACE OPTICAL COMBINER WITH PRESCRIPTION INTEGRATION
  • Application No.: EP16787972.5
    Application Date: 2016-10-12
  • Publication No.: EP3368940A1
    Publication Date: 2018-09-05
  • Inventor: KRESS, Bernard C.NORTON, Adam E.
  • Applicant: Google LLC
  • Applicant Address: 1600 Amphitheatre Parkway Mountain View, CA 94043 US
  • Assignee: Google LLC
  • Current Assignee: Google LLC
  • Current Assignee Address: 1600 Amphitheatre Parkway Mountain View, CA 94043 US
  • Agency: Boult Wade Tennant LLP
  • Priority: US201514925563 20151028
  • International Announcement: WO2017074705 20170504
  • Main IPC: G02B27/01
  • IPC: G02B27/01
FREE SPACE OPTICAL COMBINER WITH PRESCRIPTION INTEGRATION
Abstract:
A prescriptive see-through eyepiece includes a meniscus lens body and an optical combiner. The meniscus lens body has an external scene side with a convex curvature and an eye-ward side with a concave curvature. The optical combiner is disposed within the meniscus lens body to combine image light incident through the eye-ward side with external scene light incident through the external scene side into a combined image. The optical combiner is partially reflective and imparts substantially no lensing power to the external scene light passing through. The optical combiner along with the concave curvature of the eye-ward side are configured to impart prescriptive lensing to the image light while the convex curvature of the external scene side and the concave curvature of the eye-ward side are configured to impart the prescriptive lensing to the external scene light.
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