-
公开(公告)号：US20250012963A1
公开(公告)日：2025-01-09
申请号：US18712326
申请日：2022-12-02
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Hideaki Shirotori , Kazuhiko Toyooka , Sayaka Kado , Gary T. Boyd
IPC: F21V8/00
Abstract: A backlight to a display includes an array of discrete light sources and a plurality of optical films disposed between the display and the light sources. Each film includes a regular array of intersecting ridges defining a plurality of through-holes. Each of the through-holes extends between first and second open ends of the through-hole. A cross-section of the optical film in a plane parallel to a thickness direction of the film includes two adjacent ridges in the array of ridges and a through-hole therebetween. The film has a maximum thickness hmax and the through-hole includes a side wall with a substantially vertical portion connected to the first open end of the through-hole and a substantially horizontal portion extending from the substantially vertical portion and connected to the second open end. The substantially horizontal portion has a minimum thickness hmin at a location between the two adjacent ridges, hmax/hmin≥2.
-
公开(公告)号：US20250004190A1
公开(公告)日：2025-01-02
申请号：US18884454
申请日：2024-09-13
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Hideaki Shirotori , Kazuhiko Toyooka , Sayaka Kado , Gary T. Boyd
IPC: F21V8/00
Abstract: A backlight includes a plurality of discrete light sources configured to face a display, and an optical film disposed on the light sources and below and proximate a first plane. The optical film includes a plurality of through-holes extending between first and second major surfaces of the optical film. Each through-hole has a first opening at the first major surface, and a second opening at the second major surface with an open area, A2. Each through-hole has length, H, such that H/A2 is greater than or equal to about 0.13. The light from the light sources has a first overall peak intensity in the first plane, and a first brightness uniformity across the first plane, and in the absence of the optical film, the light from the light sources has a second overall peak intensity in the first plane, and a second brightness uniformity across the first plane, such that the first and second overall peak intensities are different by less than about 20%, and the first brightness uniformity exhibits an improvement over the second brightness uniformity by at least 2.8%.
-
公开(公告)号：US12117642B2
公开(公告)日：2024-10-15
申请号：US18037396
申请日：2021-11-10
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Hideaki Shirotori , Kazuhiko Toyooka , Sayaka Kado , Gary T. Boyd
IPC: F21V8/00
CPC classification number: G02B6/0068 , G02B6/0016 , G02B6/0025 , G02B6/0073
Abstract: A backlight includes a plurality of discrete light sources configured to face a display, and an optical film disposed on the light sources and below and proximate a first plane. The optical film includes a plurality of through-holes extending between first and second major surfaces of the optical film. Each through-hole has a first opening at the first major surface, and a second opening at the second major surface with an open area A2. Each through-hole has length, H, such that H/A2 is greater than or equal to about 0.13. The light from the light sources has a first overall peak intensity in the first plane, and a first brightness uniformity across the first plane, and in the absence of the optical film, the light from the light sources has a second overall peak intensity in the first plane, and a second brightness uniformity across the first plane, such that the first and second overall peak intensities are different by less than about 20%, and the first brightness uniformity exhibits an improvement over the second brightness uniformity by at least 2.8%.
-
公开(公告)号：US20240276851A1
公开(公告)日：2024-08-15
申请号：US18643225
申请日：2024-04-23
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Tao Liu , Gary T. Boyd , Daniel J. Schmidt , Caleb T. Nelson , Owen M. Anderson , Tri D. Pham , Encai Hao , Shu-Ching Fan
CPC classification number: H10K59/879 , G02B3/08
Abstract: An optical system includes an optical film curved about a first axis and a light control film curved about the first axis. The light control film can be disposed between a light source and the optical film. The optical film includes a microstructured first major surface and an opposing second major surface. The microstructured first major surface defines a linear Fresnel lens including a plurality of Fresnel elements extending longitudinally along the first axis. The first major surface of the optical film faces the light control film. The light control film can include a plurality of alternating optically transmissive and optically absorptive regions extending longitudinally along the first axis such that in a cross-section orthogonal to the first axis, for at least a majority of the optically transmissive regions, a centerline between adjacent optically absorptive regions is substantially normal to a major surface of the light control film.
-
公开(公告)号：US12004410B2
公开(公告)日：2024-06-04
申请号：US17768421
申请日：2020-10-29
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Tao Liu , Gary T. Boyd , Daniel J. Schmidt , Caleb T. Nelson , Owen M. Anderson , Tri D. Pham , Encai Hao , Shu-Ching Fan
CPC classification number: H10K59/879 , G02B3/08
Abstract: An optical system includes a light source, an optical film curved about a first axis, and a light control film curved about the first axis and disposed between the light source and the optical film. The optical film includes a microstructured first major surface and an opposing second major surface. The microstructured first major surface defines a linear Fresnel lens including a plurality of Fresnel elements extending longitudinally along the first axis. The first major surface of the optical film faces the light control film. The light control film includes a plurality of alternating optically transmissive and optically absorptive regions extending longitudinally along the first axis such that in a cross-section orthogonal to the first axis, for at least a majority of the optically transmissive regions, a centerline between adjacent optically absorptive regions is substantially normal to a major surface of the light control film.
-
Patent Agency Ranking
公开(公告)号：US12001099B2
公开(公告)日：2024-06-04
申请号：US18080069
申请日：2022-12-13
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Gary T. Boyd , Shu-Ching Fan , Alex P. Pongratz , Gary E. Gaides
IPC: G02F1/1335 , G02F1/13357
CPC classification number: G02F1/133607 , G02F1/133611 , G02F1/13362
Abstract: An integral multilayer optical construction includes opposing first and second structured major surfaces having two-dimensional arrays of respective first and second structures. An optical diffuser is embedded within the optical construction between the first and second structured major surfaces. The optical diffuser has an optical haze of greater than about 5% for at least one visible wavelength in a visible wavelength range extending from about 420 nm to 680 nm. When the optical construction is disposed on a light source with one of the first and second structured major surfaces facing the light source, light emitted by the light source is transmitted by the optical construction with a cross-section of an angular luminous distribution of the transmitted light in at least one first plane that includes a normal to the optical construction, including first and second intensity peaks at respective first and second angles on opposite sides of the normal.
-
公开(公告)号：US11828972B2
公开(公告)日：2023-11-28
申请号：US17639025
申请日：2020-10-02
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Tao Liu , Gary T. Boyd , David A. Rosen , Bharat R. Acharya , Kevin W. Gotrik , David J. Rowe , Caleb T. Nelson
IPC: F21V8/00 , G02B5/02 , G02F1/1333 , G02F1/1335
CPC classification number: G02B6/0053 , G02B5/0231 , G02B5/0278 , G02B6/0031 , G02B6/0051 , G02B6/0055 , G02F1/13338 , G02F1/133528
Abstract: An optical system includes an extended illumination source configured to emit light from an extended emission surface thereof and a light redirecting layer disposed on the extended emission surface. The light redirecting layer has a structured major surface that includes a regular array of light redirecting structures, each light redirecting structure including a plurality of facets; and a plurality of discrete spaced apart window segments. The optical system includes a plurality of reflective segments where each reflective segment is disposed on a corresponding window segment. For substantially normally incident light, each reflective segment has a total: average optical reflectance of at least 30% in a visible wavelength range extending from about 420 nm to about 650 nm; and optical transmittance of at least 10% for at least one infrared wavelength in an infrared wavelength range extending from about 800 nm to about 1200 nm.
-
公开(公告)号：US20230350101A1
公开(公告)日：2023-11-02
申请号：US18138891
申请日：2023-04-25
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Gary T. Boyd , David A. Rosen , Tao Liu , Matthew M. Philippi , Brett J. Sitter
IPC: G02B1/11
CPC classification number: G02B1/11
Abstract: An optical film for reducing at least one of sparkle and moire in a display system includes a structured first major surface that, in at least a first cross-section in a first plane substantially orthogonal to the optical film, has a sinusoidal shape having a variable pitch of greater than about 0.5 microns. For a substantially normally incident light and blue, green, and red wavelengths that are at least 50 nm apart from each other and are disposed within respective blue, green, and red wavelength ranges, optical transmissions of the optical film versus transmitted angle for the blue, green and red wavelengths have respective blue, green, and red transmission bands disposed at angles greater than about 1 degree and having respective blue, green, and red full width at half maxima (FWHMs), at least two of which at least partially overlap.
-
公开(公告)号：US20230244107A1
公开(公告)日：2023-08-03
申请号：US18102844
申请日：2023-01-30
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Yu Hsin Lu , Gary T. Boyd
IPC: G02F1/1335 , G02F1/13357
CPC classification number: G02F1/133607 , G02F1/133614 , G02F1/13362 , G02F1/133605 , G02B5/305
Abstract: A backlight to a display panel including a plurality of discrete spaced apart light sources configured to emit light and arranged two-dimensionally on a first substrate substantially reflective at least in regions between the light sources, a reflective polarizer disposed on the plurality of discrete spaced apart light sources, a first optical diffuser disposed between the reflective polarizer and the plurality of light sources and having a plurality of positive microlenses arranged in a regular two-dimensional array, and a second optical diffuser disposed between the reflective polarizer and the plurality of light sources and having a plurality of retroreflective elements arranged in a regular two-dimensional array. The second optical diffuser is configured to receive the emitted light and retroreflect the received light for incident angles less than a predetermined threshold value and transmit at least 60% of the received light for incident angles greater than the predetermined threshold value.
-
公开(公告)号：US20230194926A1
公开(公告)日：2023-06-22
申请号：US18080069
申请日：2022-12-13
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Gary T. Boyd , Shu-Ching Fan , Alex P. Pongratz , Gary E. Gaides
IPC: G02F1/1335 , G02F1/13357
CPC classification number: G02F1/133607 , G02F1/133611 , G02F1/13362
Abstract: An integral multilayer optical construction includes opposing first and second structured major surfaces having two-dimensional arrays of respective first and second structures. An optical diffuser is embedded within the optical construction between the first and second structured major surfaces. The optical diffuser has an optical haze of greater than about 5% for at least one visible wavelength in a visible wavelength range extending from about 420 nm to 680 nm. When the optical construction is disposed on a light source with one of the first and second structured major surfaces facing the light source, light emitted by the light source is transmitted by the optical construction with a cross-section of an angular luminous distribution of the transmitted light in at least one first plane that includes a normal to the optical construction, including first and second intensity peaks at respective first and second angles on opposite sides of the normal.
-
-
-
-
-
-
-
-
-
Search Results
83
records
(took 0.025 seconds)
