公开(公告)号：US20180328557A1

公开(公告)日：2018-11-15

申请号：US15775571

申请日：2016-11-04

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Kazuki KITAMURA ,  Norihiro ITO ,  Hirofumi KUBOTA ,  Masuyuki OTA

IPC: F21S11/00 ,  E06B3/67 ,  E06B9/24 ,  G02F1/29 ,  F21V14/00

CPC classification number: F21S11/007 ,  B32B3/12 ,  B32B3/30 ,  B32B7/12 ,  B32B2551/00 ,  E06B3/6715 ,  E06B5/00 ,  E06B9/24 ,  E06B2009/2417 ,  F21S11/00 ,  F21V9/40 ,  F21V14/003 ,  G02B5/00 ,  G02B5/02 ,  G02F1/13 ,  G02F1/1333 ,  G02F1/29

Abstract: An optical device includes a first substrate having light transmission properties, a second substrate opposing the first substrate and having light transmission properties, and an optical control layer disposed between the first substrate and the second substrate and including a first light-transmitting portion that includes an optical medium and an uneven structure and a second light-transmitting portion that includes only the optical medium out of the optical medium and the uneven structure. The optical medium and the uneven structure have different refractive indices. In a plan view, the first light-transmitting portion and the second light-transmitting portion are repeatedly arranged in one direction, and the area of repetition of at least one of the first light-transmitting portion and the second light-transmitting portion varies in the one direction.

公开(公告)号：US20240087433A1

公开(公告)日：2024-03-14

申请号：US18262119

申请日：2022-01-22

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takanori AKETA ,  Kenichiro TANAKA ,  Jin YOSHIZAWA ,  Shingo NAGATOMO ,  Kazuki KITAMURA ,  Tatsuya TAKAHASHI ,  Tatsuo KOGA ,  Tomonori YAMADA ,  Kazuto URA

IPC: G08B5/36 ,  G01C21/20 ,  G05D1/02 ,  H05B45/20 ,  H05B47/105 ,  H05B47/155

CPC classification number: G08B5/36 ,  G01C21/206 ,  G05D1/0214 ,  H05B45/20 ,  H05B47/105 ,  H05B47/155 ,  G08G1/123

Abstract: A lighting system includes a plurality of lighting devices and a control device. The plurality of lighting devices are installed in a facility. The control device controls the plurality of lighting devices. The control device controls lighting light projected by at least one lighting device, belonging to the plurality of lighting devices, into colored lighting light, of which a color is different from a color white, to give, upon acquiring information about an event in question, a sign depending on the event in question.

公开(公告)号：US20190196255A1

公开(公告)日：2019-06-27

申请号：US16325648

申请日：2017-06-13

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Kazuki KITAMURA ,  Hiroshi FUKUSHIMA ,  Norihiro ITO ,  Hirofumi KUBOTA ,  Masuyuki OTA

IPC: G02F1/1335 ,  G02F1/1339 ,  G02F1/1343 ,  E06B3/67

Abstract: Optical device includes first substrate being light transmissive, second substrate opposing first substrate and being light transmissive, and light distribution layer disposed between first substrate and second substrate and distributing incident light. Light distribution layer includes uneven structure portion having a plurality of projections repeated in the z axial direction parallel to the main face of first substrate, and optical medium portion containing a birefringent material and disposed to fill a plurality of recesses that are spaces between the plurality of projections. Light blocking component configured to block at least part of incident light is disposed in the plurality of recesses.

公开(公告)号：US20180373082A1

公开(公告)日：2018-12-27

申请号：US16064335

申请日：2016-12-01

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Kazuki KITAMURA ,  Norihiro ITO ,  Hirofumi KUBOTA ,  Masuyuki OTA

IPC: G02F1/1343 ,  G02F1/1335 ,  G02F1/01

Abstract: An optical device includes a first substrate which is light-transmissive, a second substrate which is light-transmissive and opposes the first substrate, a light distribution layer which is interposed between the first substrate and the second substrate and distributes incident light, and an optical element which is disposed on one of a surface of the second substrate on a side opposite to a side facing the first substrate and a surface of the first substrate on a side opposite to a side facing the second substrate. The light distribution layer includes an optical medium containing a birefringent material and an uneven structure. The optical element has an optical property of reducing an amount of at least one of first polarized light and second polarized light that differ in a polarization direction.