Composition, formed body, laminate, far infrared ray transmitting filter, solid-state imaging element, infrared camera, and infrared sensor

Patent metadata

Field	Value
Publication number	US-11043528-B2
Application number	US-201916242152-A
Country	US
Kind code	B2
Filing date	Jan 8, 2019
Priority date	Sep 21, 2016
Publication date	Jun 22, 2021
Grant date	Jun 22, 2021

Abstract

A composition includes a metal particle and a resin and has a wavelength band A having a wavelength band width of 1 μm or more in a wavelength range of 1 to 14 μm and a wavelength band B having a lower absorbance than the wavelength band A and having a wavelength band width of 1 μm or more, and a ratio Amin/Bmax between a minimum value Amin of an absorbance of the wavelength band A and a maximum value Bmax of an absorbance of the wavelength band B is 3 or more.

First claim

What is claimed is:

1. A composition comprising:
a metal particle; and
a resin,
wherein the metal particle includes at least one of Rh 2 O 3 particles, Ag 2 S particles, FeSi 2 particles, CoO particles, Mg 2 Si particles, MnSi particles, MnO 2 particles, BaSi 2 particles, V 2 O 3 particles, PbS particles, Ag 2 Te particles, Ti 2 O 3 particles, SrZrO 3 particles, BaZrO 3 particles, Ta 2 O 5 particles, WO 3 particles, CrF 3 particles, BiF 3 particles, Li 2 ZrO 3 particles, CaZrO 3 particles, CuTiO 3 particles, ZnTiO 3 particles, Ce(TiO 3 ) 2 particles, Bi(TiO 3 ) 3 particles, CaTiO 3 particles, BaTiO 3 particles, particles including a mixed crystal of Ag 2 S and Ag 2 Te, particles including a mixed crystal of CoO and MnO 2 , particles including a mixed crystal of Ti 2 O 3 and V 2 O 3 , or particles including a mixed crystal of Mg 2 Si and BaSi 2 , and
wherein the composition, in a wavelength range of 1 to 14 μm, has a wavelength band A having a wavelength band width of 1 μm or more, and a wavelength band B having a lower absorbance than the wavelength band A and having a wavelength band width of 1 μm or more, and
a ratio A min /B max between a minimum value A min of an absorbance of the wavelength band A and a maximum value B max of an absorbance of the wavelength band B is 3 or more.

2. The composition according to claim 1 ,
wherein the wavelength band B is on a longer wavelength side than the wavelength band A.

3. The composition according to claim 1 ,
wherein the wavelength band B is on a shorter wavelength side than the wavelength band A.

4. The composition according to claim 1 ,
wherein a band gap energy of the metal particle at 25° C. is 1.0 eV or less.

5. A formed body obtained by using the composition according to claim 1 .

6. The formed body according to claim 5 ,
wherein an average refractive index is 1.3 to 5.0 in a wavelength range of 8 to 14 μm.

7. The formed body according to claim 5 ,
wherein a shape of the formed body is a film shape, a flat sheet shape, or a lens shape.

8. The formed body according to claim 5 , which is used for a far infrared ray transmitting filter.

9. A laminate comprising:
a substrate; and
the formed body according to claim 5 provided on the substrate.

10. The laminate according to claim 9 ,
wherein a refractive index n1 of the formed body at a wavelength of 10 μm and a refractive index n2 of a layer that is in contact with the formed body in a thickness direction of the formed body at a wavelength of 10 μm satisfy the following relationship,
( n 2) 0.5 −1 ≤n 1≤( n 2) 0.5 +1.

11. A far infrared ray transmitting filter comprising:
the laminate according to claim 9 .

12. A far infrared ray transmitting filter comprising:
the formed body according to claim 5 .

13. A solid-state imaging element comprising:
the far infrared ray transmitting filter according to claim 12 .

14. An infrared camera comprising:
the far infrared ray transmitting filter according to claim 12 .

15. An infrared sensor comprising:
the far infrared ray transmitting filter according to claim 12 .

16. The composition according to claim 1 ,
wherein the metal particle includes at least one of Rh 2 O 3 particles, Ag 2 S particles, FeSi 2 particles, CoO particles, Mg 2 Si particles, MnSi particles, MnO 2 particles, BaSi 2 particles, V 2 O 3 particles, PbS particles, Ag 2 Te particles, SrZrO 3 particles, BaZrO 3 particles, Ta 2 O 5 particles, WO 3 particles, CrF 3 particles, BiF 3 particles, Li 2 ZrO 3 particles, CaZrO 3 particles, CuTiO 3 particles, ZnTiO 3 particles, Ce(TiO 3 ) 2 particles, Bi(TiO 3 ) 3 particles, CaTiO 3 particles, BaTiO 3 particles, particles including a mixed crystal of Ag 2 S and Ag 2 Te, particles including a mixed crystal of CoO and MnO 2 , particles including a mixed crystal of Ti 2 O 3 and V 2 O 3 , or particles including a mixed crystal of Mg 2 Si and BaSi 2 .

17. The composition according to claim 1 ,
wherein the metal particle includes at least one of Rh 2 O 3 particles, Ag 2 S particles, FeSi 2 particles, CoO particles, Mg 2 Si particles, MnSi particles, MnO 2 particles, BaSi 2 particles, V 2 O 3 particles, PbS particles, Ag 2 Te particles, SrZrO 3 particles, BaZrO 3 particles, Ta 2 O 5 particles, CrF 3 particles, BiF 3 particles, Li 2 ZrO 3 particles, CaZrO 3 particles, CuTiO 3 particles, ZnTiO 3 particles, Ce(TiO 3 ) 2 particles, Bi(TiO 3 ) 3 particles, CaTiO 3 particles, BaTiO 3 particles, particles including a mixed crystal of Ag 2 S and Ag 2 Te, particles including a mixed crystal of CoO and MnO 2 , particles including a mixed crystal of Ti 2 O 3 and V 2 O 3 , or particles including a mixed crystal of Mg 2 Si and BaSi 2 .

18. The composition according to claim 1 ,
wherein the metal particle includes at least one of Rh 2 O 3 particles, Ag 2 S particles, FeSi 2 particles, Mg 2 Si particles, MnSi particles, MnO 2 particles, Ag 2 Te particles, CrF 3 particles, BiF 3 particles, Li 2 ZrO 3 particles, CaZrO 3 particles, CuTiO 3 particles, ZnTiO 3 particles, Ce(TiO 3 ) 2 particles, Bi(TiO 3 ) 3 particles, CaTiO 3 particles, BaTiO 3 particles, or particles including a mixed crystal of Mg 2 Si and BaSi 2 .

19. The composition according to claim 1 ,
wherein the metal particle includes at least one of BaSi 2 particles, V 2 O 3 particles, PbS particles, particles including a mixed crystal of Ag 2 S and Ag 2 Te, particles including a mixed crystal of CoO and MnO 2 , particles including a mixed crystal of Ti 2 O 3 and V 2 O 3 , and particles including a mixed crystal of BaSi 2 and BaZrO 3 .

20. The composition according to claim 1 ,
wherein the metal particle includes Rh atom.

21. A composition comprising:
a metal particle; and
a resin,
wherein the composition, in a wavelength range of 1 to 14 μm, has a wavelength band A having a wavelength band width of 1μm or more, and a wavelength band B having a lower absorbance than the wavelength band A and having a wavelength band width of 1 μm or more,
a ratio A min /B max between a minimum value A min of an absorbance of the wavelength band A and a maximum value B max of an absorbance of the wavelength band B is 3 or more, and
the wavelength band B is on a shorter wavelength side than the wavelength band A.

Assignees

• Fujifilm Corp

Inventors

• TAKISHITA Hirotaka
• Hosoya Yoichi
• Oikawa Tokuju
• Takahashi Hidenori

Classifications

• H04N23/555

  for picking-up images in sites, inaccessible due to their dimensions or hazardous conditions, e.g. endoscopes or borescopes · CPC title

• H10F39/8057

  Optical shielding · CPC title

• H10F39/184 Primary

  Infrared image sensors · CPC title

• C09K3/10

  {Materials in mouldable or extrudable form} for sealing or packing joints or covers (filling pastes C09D5/34) · CPC title

• G02B1/041

  Lenses · CPC title