公开(公告)号：US11927768B2

公开(公告)日：2024-03-12

申请号：US17712377

申请日：2022-04-04

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Andrew J. Ouderkirk ,  Timothy L Wong ,  Erin A. McDowell ,  Zhisheng Yun ,  Gilles J. Benoit ,  Jo A. Etter

IPC: G02B27/09 ,  G02B3/00 ,  G02B27/01 ,  G02B27/28 ,  G02B27/30

CPC classification number: G02B27/0955 ,  G02B3/0043 ,  G02B3/0068 ,  G02B27/0172 ,  G02B27/283 ,  G02B27/30 ,  G02B2027/0118

Abstract: A display system including an imager for forming an image, and a projection lens system for projecting the image formed by the imager is described. For each pixel in the plurality of pixels, the imager is configured to emit a cone of light having a central ray having a direction that varies with location of the pixel in the imager. The variation may increase a brightness of an image projected through the projection lens system by at least 30 percent. The display system may include a light guide having a light insertion portion adapted to receive light; a light transport portion disposed to receive light from the light insertion portion; and a light extraction portion disposed to receive light from the light transport portion.

公开(公告)号：US12287481B2

公开(公告)日：2025-04-29

申请号：US17639953

申请日：2020-09-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： John D. Le ,  Timothy L Wong ,  Timothy J. Nevitt ,  Zhisheng Yun

IPC: G02B5/30 ,  G02B27/01

Abstract: An optical system for displaying first and second images to a viewer is provided. A reflective polarizer is disposed between the second display and the viewer and is oriented obliquely relative to the first display. An optical stack including a partial reflector and a retarder layer is disposed between the reflective polarizer and the second display. The reflective polarizer reflects at least 70% of the incident light having a first polarization state and transmits at least 60% of the incident light having an orthogonal second polarization state. The partial reflector reflects at least 70% of the incident light for each of the polarization states. For each of the first and second polarization states and for each of a blue-green wavelength and a green-red wavelength the reflective polarizer transmits at east 70% of the incident light and the partial reflector transmits at least 60% of the incident light.