公开(公告)号：US11487159B2

公开(公告)日：2022-11-01

申请号：US17419901

申请日：2020-01-06

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Quinn D. Sanford ,  Matthew B. Johnson ,  Ryan T. Fabick ,  Nathaniel K. Naismith

IPC: G02F1/13357 ,  G02F1/1335

Abstract: A backlight (100) for an image forming device (70) includes spaced-apart front and back optical reflectors (20, 10) defining an optical cavity (18) therebetween, and at least one light source (15) for emitting light into the optical cavity. The front optical reflector (20) is disposed between the image forming device and the back optical reflector (10). For substantially normally incident light and for non-overlapping first (e.g. visible light) and second (e.g. infrared) wavelength ranges, the front optical reflector (20) may transmit (80c) at least 70% of light (80a) for each wavelength in the first wavelength range, and may reflect (90b) at least 70% of light (90a) for each wavelength in the second wavelength range. The back optical reflector (10) may reflect (80b) at least 70% of light for each wavelength in the first wavelength range, and may transmit (90c) at least 70% of light (90b) for each wavelength in the second wavelength range. The light (80a, 90a) emitted by the at least one light source (15) has at least one wavelength in the first wavelength range and at least one wavelength in the second wavelength range.

公开(公告)号：US11187847B2

公开(公告)日：2021-11-30

申请号：US16619300

申请日：2018-06-05

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Quinn D. Sanford ,  Kenneth A. Epstein ,  Matthew B. Johnson ,  Gary T. Boyd

IPC: F21V8/00 ,  G02B5/30

Abstract: Backlights are described. In particular, backlights including wide-web turning films and reflective polarizers having quarter-wave retarders are disclosed. Such configurations can provide turning film systems with improved luminance uniformity for large format displays.

公开(公告)号：US20160306086A1

公开(公告)日：2016-10-20

申请号：US15102117

申请日：2014-12-04

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Adam D. Haag ,  Timothy J. Nevitt ,  Quinn D. Sanford ,  Robert D. Taylor ,  Carl A. Stover

IPC: G02B5/30 ,  F21V9/14

CPC classification number: G02B5/3041 ,  F21V9/14 ,  G02B5/305 ,  G02B5/3083

Abstract: Hybrid polarizers are described. More particularly, hybrid polarizers including reflective polarizer portions and hybrid polarizing portions, including embedded absorbing polarizing elements are described. The hybrid polarizers may be used in backlights or display devices.

Abstract translation: 描述了混合偏振器。 更具体地，描述了包括反射偏振器部分和混合偏振部分的混合偏振器，包括嵌入式吸收偏振元件。 混合偏振器可用于背光或显示装置。