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公开(公告)号：US20180087731A1
公开(公告)日：2018-03-29
申请号：US15711632
申请日：2017-09-21
Inventor： Hiroko KOIWA , Naoko TAKEI , Yoko MATSUBAYASHI
CPC classification number: F21S41/141 , B60Q1/06 , F21S41/125 , F21S41/143 , F21S41/147 , F21S41/25 , F21S41/663 , F21V15/01 , F21W2102/18
Abstract: A vehicle front lamp that emits light forward includes a first light emitter that emits first emission light having a correlated color temperature of at least 3000 K and at most 7000 K, and a second light emitter that emits second emission light having a correlated color temperature of at least 3000 K and at most 7000 K. The chroma value of the first emission light is lower than the chroma value of the second emission light. The chroma value of each of the first emission light and the second emission light is derived by using the calculation method stipulated in The CIE 1997 Interim Color Appearance Model (Simple Version). The second emission light is emitted far ahead and the first emission light is emitted onto a road surface ahead, when the vehicle front lamp is mounted on a vehicle.
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公开(公告)号：US20170254511A1
公开(公告)日：2017-09-07
申请号：US15447804
申请日：2017-03-02
Inventor： Yoko MATSUBAYASHI , Hiroko KOIWA
CPC classification number: F21V13/04 , F21K9/20 , F21K9/68 , F21S8/04 , F21V3/062 , F21V5/04 , F21V7/00 , F21V19/02 , F21V21/30 , F21V23/003 , F21Y2113/00 , F21Y2115/10
Abstract: A lighting apparatus is provided. The lighting apparatus includes a first light source module and a second light source module surrounding the first light source module. A half beam angle of the first light source module is smaller than a half beam angle of the second light source module. A correlated color temperature of light from the first light source module is higher than a correlated color temperature of light from the second light source module.
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公开(公告)号：US20170257922A1
公开(公告)日：2017-09-07
申请号：US15447760
申请日：2017-03-02
Inventor： Yoko MATSUBAYASHI , Tohru HIMENO , Hiroko KOIWA , Naoko TAKEI , Makoto YAMADA
CPC classification number: H05B33/0857 , F21S8/04 , F21V3/00 , F21V3/02 , F21V21/03 , F21V23/003 , F21V23/02 , F21Y2105/18 , F21Y2113/13 , F21Y2115/10 , H05B33/0821
Abstract: A lighting apparatus includes first light emitting elements and second light emitting elements having chromaticity values in a same chromaticity range. A ratio of a greatest value of a spectral distribution of combined light in a range of 500 nm to 560 nm inclusive to a smallest value of the spectral distribution of the combined light in a range of 500 nm to 650 nm inclusive is 0.85 or less. The combined light is a combination of light emitted by the first light emitting elements and light emitted by the second light emitting elements.
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公开(公告)号：US20170254487A1
公开(公告)日：2017-09-07
申请号：US15447706
申请日：2017-03-02
Inventor： Yoko MATSUBAYASHI , Tohru HIMENO , Hiroko KOIWA
CPC classification number: F21K9/61 , F21S8/04 , F21V3/00 , F21V3/0625 , F21V19/001 , F21V23/003 , F21Y2105/12 , F21Y2105/18 , F21Y2113/00 , F21Y2113/13 , F21Y2115/10 , G02B6/0031 , G02B6/0046
Abstract: A lighting apparatus is provided. The lighting apparatus includes a first light distributor which illuminates a predetermined region, and a second light distributor which illuminates a periphery of the predetermined region. The first light distributor includes a first light emitting element having a spectral emission characteristic defined by a correlated color temperature of light being at least 5400 K and at most 7000 K, Duv being in a range of −6 to 5 inclusive, a chroma value calculated using a calculation method specified by the CIE 1997 Interim Color Appearance Model (Simple Version) being 2.7 or less, and a general color rendering index Ra being 80 or more. The second light distributor includes a second light emitting element having a spectral emission characteristic defined by a correlated color temperature of light being lower than the correlated color temperature of the light emitted by the first light emitting element.
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