公开(公告)号：US20230228994A1

公开(公告)日：2023-07-20

申请号：US17577480

申请日：2022-01-18

Applicant: GOOGLE LLC

Inventor： Brian Watson Cranton ,  Darren Edward Ihmels ,  Lloyd Frederick Holland ,  Cecilia Abadie

IPC: G02B27/01 ,  G02C7/06

CPC classification number: G02B27/0172 ,  G02C7/06 ,  G02B2027/0178 ,  G02B2027/014 ,  G02C2202/16

Abstract: A lens specification for multiple lens layers of a lens structure is generated by one or more processors. A multifocal correction (MFC) component is assigned to at least one lens layer of the multiple lens layers. Parameters are generated for a display optics (DO) lens layer comprising an augmented reality (AR) display, the DO lens layer having a first side for facing an eye of the user and a second side for facing away from the eye of the user. Parameters are generated for one or more eye side (ES) lens layers of the multiple lens layers to be disposed adjacent to the first side of the DO lens layer, and for one or more world side (WS) lens layers to be disposed adjacent to the second side of the DO lens layer. The generated lens specification is provided for use in production of the lens structure for the user.

公开(公告)号：US20220268970A1

公开(公告)日：2022-08-25

申请号：US17205410

申请日：2021-03-18

Applicant: GOOGLE LLC

Inventor： Brian Watson Cranton ,  Darren Edward Ihmels ,  Ian Andrews ,  Lloyd Frederick Holland

IPC: G02B3/10 ,  G02B3/00 ,  F21V8/00 ,  G02B27/01

Abstract: Systems, devices, and assemblies for implementing multi-focal lens portions in wearable heads-up displays are described. Multi-focal lens portions may include at least two regions having different optical power, and at least one transition region between regions having different optical power. If display light is directed through a transition region, aberrations or distortion may be visible in the display presented to the user. The present systems, devices, and assemblies address this issue through shaping, positioning, and orienting of regions of a multi-focal lens portion, through positioning, orientation, and aiming of display optics, and/or through arrangements of lens assemblies which prevent display light from travelling through a multi-focal lens portion.