公开(公告)号：US11623518B2

公开(公告)日：2023-04-11

申请号：US16952271

申请日：2020-11-19

申请人： Mitsubishi Chemical Corporation

发明人： Takao Marutani ,  Tadayoshi Sawada

IPC分类号： B60K35/00

摘要： A color display device (D) is provided, including a colored light-transmitting base material (10), a light-blocking base material, and a light source unit (30) that has at least a part located between the colored light-transmitting base material (10) and the light-blocking base material (20), in which the colored light-transmitting base material (10) has a total light transmittance of 18% or less, and in which the light source unit (30) is disposed such that emission light transmits through the colored light-transmitting base material (10), the color display device having excellent designability and high luminance.

公开(公告)号：US10656314B2

公开(公告)日：2020-05-19

申请号：US15536047

申请日：2015-12-15

申请人： Mitsubishi Chemical Corporation

发明人： Tadayoshi Sawada ,  Yoshiaki Murayama

IPC分类号： G02B5/22 ,  C08K5/08 ,  C08K5/3465 ,  C08L101/00 ,  C08J5/00 ,  C08K5/3447 ,  C08K5/00 ,  F21V9/08 ,  C08K5/3417

摘要： Provided is a shaped article having excellent jet blackness and also, by transmitting light with specific wavelength, can display a specific color. The shaped article is a shaped article for which the L* value of reflected light is 35 or less and the total light transmittance is 1% or less, wherein, in a wavelength range of 380 nm or more to 780 nm or less, the wavelength at which the maximum value of light transmittance is exhibited is in a range of 380 nm or more to less than 680 nm, and the expressions Tα≥0.1% and 0%≤Tβ≤Tα/2 are satisfied, or, in a wavelength range of 380 nm or more to 780 nm or less, the wavelength at which the maximum value of light transmittance is exhibited is in a range of 680 nm or more to 780 nm or less, and the expressions Tβ≥10% and 0%≤Tα≤Tβ/2 are satisfied. In the expressions, Tα is the maximum value of light transmittance in a wavelength range of 380 nm or more to less than 680 nm, and Tβ is the maximum value of light transmittance in a wavelength range of 680 nm or more to 780 nm or less.

公开(公告)号：US11732862B2

公开(公告)日：2023-08-22

申请号：US17762163

申请日：2020-07-30

申请人： NISSAN MOTOR CO., LTD. ,  MITSUBISHI CHEMICAL CORPORATION

发明人： Yu Sasaki ,  Tatsuomi Nakayama ,  Yusuke Hirata ,  Takao Marutani ,  Tadayoshi Sawada

IPC分类号： F21S43/20 ,  F21S43/14

CPC分类号： F21S43/20 ,  F21S43/14

摘要： An indicator lamp of the present invention includes a lamp body, a light source unit disposed inside the lamp body, and a light transmissive resin member disposed at a position for transmitting light that is emitted from the light source unit and for outputting the light from the lamp body.
The light source unit emits red light having a maximum value of light intensity at a wavelength of 600 nm or longer and 700 nm or shorter. The light transmissive resin member has an L* value of 35 or less, a transmittance of light having a wavelength of 675 nm of 90% or greater and a total light transmittance of 5% or greater in the state in which an optical path length of transmitting light is 2 mm. This configuration provides an indicator lamp with excellent design that shows its presence by showing a red chromatic tone when a light source is turned on and that shows a black color tone when the light source is turned off.

公开(公告)号：US11269130B2

公开(公告)日：2022-03-08

申请号：US17012826

申请日：2020-09-04

申请人： Mitsubishi Chemical Corporation

发明人： Youhei Sechi ,  Tadayoshi Sawada ,  Takashi Ookubo

IPC分类号： F21V8/00 ,  F21S41/20 ,  G02B1/04 ,  F21W107/10

摘要： A transparent resin composition includes a transparent resin and a light diffusing agent which has an average particle diameter of 220 nm or more and 300 nm or less, in which a content proportion of the light diffusing agent is more than 4.0 mass ppm and less than 20 mass ppm with respect to the total mass of the transparent resin composition.