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US 10,649,242 B2Granted
Multilayer film, multilayer film composite, optical component, and window
AssigneeRicoh Company, Ltd.
InventorKoji Iwasaki
Life of this patent
Estimating the term…
Abstract
To provide a multilayer film, wherein a reflectance of the multilayer film in a visible light region and a reflectance of the multilayer film in a near infrared region are both 0.1% or more but 20% or less in a temperature range of 5° C. or more but less than 30° C., and the reflectance of the multilayer film in the visible light region is 0.1% or more but 20% or less and the reflectance of the multilayer film in the near infrared region is 80% or more but less than 100% in a temperature range of 30° C. or more but less than 60° C.
Claims9
A multilayer film, comprising:
- one or more first layers comprising a thermoplastic resin;
- and
- one or more second layers comprising a polymer,
- wherein a reflectance of the multilayer film in a visible light region and a reflectance of the multilayer film in a near infrared region are both 0.1% or more but 20% or less in a temperature range of 5° C. or more but less than 30° C., and the reflectance of the multilayer film in the visible light region is 0.1% or more but 20% or less and the reflectance of the multilayer film in the near infrared region is 80% or more but less than 100% in a temperature range of 30° C. or more but less than 60° C.,
- wherein the multilayer film satisfies Expression 1 below:
- −0.010≤(RB−RA)≤0.010
- 0.010≤(RD−RC)≤0.20 [Expression 1]
- where the RA is a minimum refractive index of a material constituting the one or more first layers at 5° C. or more but less than 30° C., the RB is a minimum refractive index of a material constituting the one or more second layers at 5° C. or more but less than 30° C., the RC is a maximum refractive index of the material constituting the one or more first layers at 30° C. or more but less than 60° C., and the RD is a maximum refractive index of the material constituting the one or more second layers at 30° C. or more but less than 60° C.,
- wherein the multilayer film comprises an alternately laminated body A, an alternately laminated body B, an alternately laminated body C, and an alternately laminated body D, which are presented in Table A below:
- TABLE A
- Configuration of
- Alternately
- Alternately
- multilayer film
- laminated body A
- laminated body B
- First
- Average
- 100 nm or more
- 100 nm or more
- layers
- thickness
- but
- but
- 200 nm or less
- 200 nm or less
- Number of
- 50 layers or more
- 50 layers or more
- first layers
- but
- but
- 300 layers or less
- 300 layers or less
- Second
- Average
- 100 nm or more
- 100 nm or more
- layers
- thickness
- but
- but
- 200 nm or less
- 200 nm or less
- Number of
- 50 layers or more
- 50 layers or more
- second
- but
- but
- layers
- 300 layers or less
- 300 layers or less
- Configuration of
- Alternately
- Alternately
- multilayer film
- laminated body C
- laminated body D
- First
- Average
- 100 nm or more
- 100 nm or more
- layers
- thickness
- but
- but
- 200 nm or less
- 200 nm or less
- Number of
- 50 layers or more
- 50 layers or more
- first layers
- but
- but
- 300 layers or less
- 300 layers or less
- Second
- Average
- 100 nm or more
- 100 nm or more
- layers
- thickness
- but
- but
- 200 nm or less
- 200 nm or less
- Number of
- 50 layers or more
- 50 layers or more
- second
- but
- but
- layers
- 300 layers or less
- 300 layers or less.
93 more elements
A multilayer film composite comprising:
- a base material;
- and
- a multilayer film on the base material,
- wherein the multilayer film comprises one or more first layers comprising a thermoplastic resin, and one or more second layers comprising a polymer,
- wherein a reflectance of the multilayer film in a visible light region and a reflectance of the multilayer film in a near infrared region are both 0.1% or more but 20% or less in a temperature range of 5° C. or more but less than 30° C., and the reflectance of the multilayer film in the visible light region is 0.1% or more but 20% or less and the reflectance of the multilayer film in the near infrared region is 80% or more but less than 100% in a temperature range of 30° C. or more but less than 60° C.,
- wherein the multilayer film satisfies Expression 1 below:
- −0.010≤(RB−RA)≤0.010
- 0.010≤(RD−RC)≤0.20 [Expression 1]
- where the RA is a minimum refractive index of a material constituting the one or more first layers at 5° C. or more but less than 30° C., the RB is a minimum refractive index of a material constituting the one or more second layers at 5° C. or more but less than 30° C., the RC is a maximum refractive index of the material constituting the one or more first layers at 30° C. or more but less than 60° C., and the RD is a maximum refractive index of the material constituting the one or more second layers at 30° C. or more but less than 60° C.,
- wherein the multilayer film comprises an alternately laminated body A, an alternately laminated body B, an alternately laminated body C, and an alternately laminated body D, which are presented in Table A below:
- TABLE A
- Configuration of
- Alternately
- Alternately
- Alternately
- Alternately
- multilayer film
- laminated body A
- laminated body B
- laminated body C
- laminated body D
- First
- Average
- 100 nm or more
- 100 nm or more
- 100 nm or more
- 100 nm or more
- layers
- thickness
- but
- but
- but
- but
- 200 nm or less
- 200 nm or less
- 200 nm or less
- 200 nm or less
- Number of
- 50 layers or more
- 50 layers or more
- 50 layers or more
- 50 layers or more
- first layers
- but
- but
- but
- but
- 300 layers or less
- 300 layers or less
- 300 layers or less
- 300 layers or less
- Second
- Average
- 100 nm or more
- 100 nm or more
- 100 nm or more
- 100 nm or more
- layers
- thickness
- but
- but
- but
- but
- 200 nm or less
- 200 nm or less
- 200 nm or less
- 200 nm or less
- Number of
- 50 layers or more
- 50 layers or more
- 50 layers or more
- 50 layers or more
- second
- but
- but
- but
- but
- layers
- 300 layers or less
- 300 layers or less
- 300 layers or less
- 300 layers or less.
79 more elements
An optical component comprising:
- a base material;
- and
- a multilayer film on the base material,
- wherein the multilayer film comprises one or more first layers comprising a thermoplastic resin, and one or more second layers comprising a polymer,
- wherein a reflectance of the multilayer film in a visible light region and a reflectance of the multilayer film in a near infrared region are both 0.1% or more but 20% or less in a temperature range of 5° C. or more but less than 30° C., and the reflectance of the multilayer film in the visible light region is 0.1% or more but 20% or less and the reflectance of the multilayer film in the near infrared region is 80% or more but less than 100% in a temperature range of 30° C. or more but less than 60° C.,
- wherein the multilayer film satisfies Expression 1 below:
- −0.010≤(RB−RA)≤0.010
- 0.010≤(RD−RC)≤0.20 [Expression 1]
- where the RA is a minimum refractive index of a material constituting the one or more first layers at 5° C. or more but less than 30° C., the RB is a minimum refractive index of a material constituting the one or more second layers at 5° C. or more but less than 30° C., the RC is a maximum refractive index of the material constituting the one or more first layers at 30° C. or more but less than 60° C., and the RD is a maximum refractive index of the material constituting the one or more second layers at 30° C. or more but less than 60° C.,
- wherein the multilayer film comprises an alternately laminated body A, an alternately laminated body B, an alternately laminated body C, and an alternately laminated body D, which are presented in Table A below:
- TABLE A
- Configuration of
- Alternately
- Alternately
- Alternately
- Alternately
- multilayer film
- laminated body A
- laminated body B
- laminated body C
- laminated body D
- First
- Average
- 100 nm or more
- 100 nm or more
- 100 nm or more
- 100 nm or more
- layers
- thickness
- but
- but
- but
- but
- 200 nm or less
- 200 nm or less
- 200 nm or less
- 200 nm or less
- Number of
- 50 layers or more
- 50 layers or more
- 50 layers or more
- 50 layers or more
- first layers
- but
- but
- but
- but
- 300 layers or less
- 300 layers or less
- 300 layers or less
- 300 layers or less
- Second
- Average
- 100 nm or more
- 100 nm or more
- 100 nm or more
- 100 nm or more
- layers
- thickness
- but
- but
- but
- but
- 200 nm or less
- 200 nm or less
- 200 nm or less
- 200 nm or less
- Number of
- 50 layers or more
- 30 layers or more
- 50 layers or more
- 50 layers or more
- second
- but
- but
- but
- but
- layers
- 300 layers or less
- 300 layers or less
- 300 layers or less
- 300 layers or less.
79 more elements
Dependencies are inferred from the claim text.