公开(公告)号：US11378877B2

公开(公告)日：2022-07-05

申请号：US17021482

申请日：2020-09-15

Applicant: AGC INC.

Inventor： Yoshiharu Ooi ,  Koichi Tashima ,  Kensuke Ono ,  Atsushi Koyanagi

IPC: G03B21/00 ,  G03B21/20 ,  G02B3/00 ,  G02B5/18 ,  G02B27/30

Abstract: A homogenizer includes a convex-lens array pair including a first convex-lens array disposed on a light entrance side and a second convex-lens array disposed on a light emission side. The first convex-lens array and the second convex-lens array are disposed so as to face each other such that each of the convex-lens arrays has a lens surface opposed to each other outward or inward. The first convex-lens array includes a plurality of first convex lenses in an array arrangement. The second convex-lens array includes a plurality of second convex lenses in an array arrangement. The first convex lens has an average internal transmission angle for incident light entering a lens-surface center region in the lens cross-section and being in parallel with the symmetry axis being equal to or more than 1.3 times an average internal transmission angle of a spherical convex lens.

公开(公告)号：US10683233B2

公开(公告)日：2020-06-16

申请号：US15667191

申请日：2017-08-02

Applicant: AGC Inc.

Inventor： Shuhei Nomura ,  Kazutaka Ono ,  Yoshiharu Ooi ,  Hiroki Hotaka

IPC: B32B15/04 ,  B32B17/06 ,  C03C4/08 ,  C03C3/085 ,  C03C3/087 ,  C03B25/02 ,  C03C27/00 ,  B32B9/04 ,  B32B7/12 ,  C03C3/091 ,  C03B17/06 ,  C03C3/093 ,  C03C17/25 ,  G02B5/20 ,  G02B5/22

Abstract: A light selective transmission type glass 10 according to the present invention includes: a glass substrate 12; and a light selective transmission layer 11 provided on at least one main surface of the glass substrate 12. The glass substrate 12 has an average thermal expansion coefficient α50/100 at 50° C. to 100° C. of 2.70 ppm/° C. to 3.20 ppm/° C., an average thermal expansion coefficient α200/300 at 200° C. to 300° C. of 3.45 ppm/° C. to 3.95 ppm/° C., a value α200/300/α50/100 obtained by dividing the average thermal expansion coefficient α200/300 at 200° C. to 300° C. by the average thermal expansion coefficient α50/100 at 50° C. to 100° C. of 1.20 to 1.30, and a content of an alkali metal oxide being 0% to 0.1%.

公开(公告)号：US10228500B2

公开(公告)日：2019-03-12

申请号：US15466118

申请日：2017-03-22

Applicant: AGC Inc.

Inventor： Yoshiharu Ooi ,  Kazuhiko Shiono ,  Asana Yoshioka ,  Shoko Suzuki ,  Hiroki Hotaka

IPC: F21V9/04 ,  F21V9/06 ,  G02B5/08 ,  G02B5/20 ,  G02B5/28 ,  G02B5/22

Abstract: An optical filter includes: an absorption layer containing a first near-infrared absorbent having a maximum absorption in a wavelength of 660 to 785 nm, and satisfying (i-1) in 620 to 670 nm, on a shorter wavelength side of a wavelength λ (DA_Tmin) exhibiting the maximum absorption, there is a wavelength λSh (DA_T50%) at which a transmittance becomes 50%; and a reflection layer formed of a dielectric multilayered film satisfying (ii-1) in 670 to 1200 nm, there is a near-infrared reflection band in which a transmittance with respect to light at an incident angle of 0° becomes 50% or less, and a wavelength λSh (A2_Ts50%) at which a transmittance of light of an s polarization component out of light at an incident angle of 30° becomes 50%, on a shorter wavelength side of the near-infrared reflection band, is positioned on a longer wavelength side of the wavelength λSh (DA_T50%).

公开(公告)号：US10746908B2

公开(公告)日：2020-08-18

申请号：US15819670

申请日：2017-11-21

Applicant: AGC Inc.

Inventor： Yoshiharu Ooi ,  Hiroshi Kumai ,  Kazuhiko Shiono ,  Hiroki Hotaka

IPC: G02B5/20 ,  G02B5/22 ,  G02B5/28 ,  C03C17/42 ,  C09B57/00 ,  C03C17/00 ,  C03C4/08 ,  G02B1/04 ,  G03B11/00

Abstract: There is provide an optical filter suppressed in incidence angle dependence and having high visible light transmittance. The optical filter includes: an absorption layer containing a first near-infrared absorbent (DA) having a maximum absorption wavelength λ(DA_Tmin) in wavelengths of 685 to 715 nm and a second near-infrared absorbent (DB) having a maximum absorption wavelength λ(DB_Tmin) in wavelengths of 705 to 725 nm or wavelengths of more than 725 nm and 900 nm or less on a side of a wavelength longer than the maximum absorption wavelength λ(DA_Tmin), and satisfying specific light absorption characteristics; and a reflection layer including a dielectric multilayer film satisfying specific reflection characteristics in wavelengths of 700 to 1150 nm, wherein a transmittance of the reflection layer in a boundary region of visible light and near-infrared light and a transmittance of the absorption layer have a specific relation.

公开(公告)号：US10310150B2

公开(公告)日：2019-06-04

申请号：US15279688

申请日：2016-09-29

Applicant: AGC Inc.

Inventor： Takashi Sugiyama ,  Katsumasa Hosoi ,  Atsushi Komori ,  Yoshiharu Ooi ,  Makoto Hasegawa

IPC: G02B5/20 ,  G02B5/26 ,  G02B5/22 ,  G02B5/28 ,  H01L27/146

Abstract: There are provided a near-infrared cut filter having a sufficient near-infrared blocking property and being capable of reducing or preventing, in a solid-state imaging device using the near-infrared cut filter, occurrence of a phenomenon that an object which did not exist on the original subject appears in a taken image, and also a highly sensitive solid-state imaging device having the near-infrared cut filter. A near-infrared cut filter includes a stack having a near-infrared absorbing glass substrate and a near-infrared absorbing layer containing a near-infrared absorbing dye and a transparent resin on at least one main surface of the near-infrared absorbing glass substrate, and a dielectric multilayer film formed on at least one main surface of the stack, wherein maximum transmittance at an incident angle of 31 to 60 degrees with respect to light with a wavelength of from 775 to 900 nm is 50% or less.