Abstract: A protective cover member includes a laminate including: a protective membrane having a shape configured to cover an opening when the protective cover member is placed on the face of an object; a substrate film joined to the protective membrane; and a first adhesive layer configured to fix the protective cover member to the face, wherein an outer peripheral surface of the protective cover member has a step in a laminating direction of the laminate, a first portion of the protective cover member protrudes at the step more outward than a second portion of the protective cover member does when the protective cover member is placed on the face, the first portion being positioned farther from the face than the step, the second portion being positioned closer to the face than the step, and the protective membrane and the substrate film are positioned in the first portion.

Abstract: The heat-shielding heat insulating substrate is a heat-shielding heat insulating substrate including a transparent substrate layer and an infrared reflection layer, the heat-shielding heat insulating substrate including: a protective topcoat layer arranged on a side of the infrared reflection layer opposite to the transparent substrate layer; and a protective film arranged on a surface of the protective topcoat layer opposite to the infrared reflection layer, wherein a 180° peel strength of the protective film to the protective topcoat layer under an environment having a temperature of 23±1° C. and a humidity of 50±5% RH is from 0.01 N/50 mm to 0.40 N/50 mm, and wherein a 180° peel strength of the protective film to the protective topcoat layer after storage of the heat-shielding heat insulating substrate under an environment having a temperature of 80±1° C. for 10 days is from 0.01 N/50 mm to 1.0 N/50 mm.

Abstract: Provided is an infrared reflective substrate having both a high visible light transmittance and a high heat shielding property. The infrared reflective substrate comprises a transparent substrate member and an infrared reflective layer, wherein the infrared reflective substrate has a visible light absorption rate of 0.3 or less, and a reflectance whose slope in a wavelength range of 700 nm to 600 nm is 0.12 or more.

Abstract: The present invention provides a sensor cell that has excellent measurement accuracy in repetitive measurement. An optical waveguide of the present invention includes a cladding layer and a core layer buried in the cladding layer so that at least one surface of the core layer is exposed. A water contact angle of a surface of the cladding layer on which the core layer is exposed is 80° or more. An SPR sensor cell and a colorimetric sensor cell of the present invention each include the optical waveguide of the present invention.

Abstract: The present invention provides an SPR sensor cell having very excellent detection sensitivity, the SPR sensor cell including: an under-cladding layer; a core layer formed so that at least a part of the core layer is adjacent to the under-cladding layer; and a metal layer covering the core layer. In the SPR sensor cell, the core layer includes a uniform refractive index layer and a graded refractive index layer. The graded refractive index layer is arranged between the uniform refractive index layer and the metal layer. A refractive index of the graded refractive index layer is equal to or more than a refractive index of the uniform refractive index layer, and the refractive index of the graded refractive index layer increases continuously from a surface thereof on a uniform refractive index layer side to the metal layer side in a thickness direction of the graded refractive index layer.

Abstract: An optical waveguide in which the occurrence of a crack in a cladding layer is prevented, and the SPR sensor cell and the colorimetric sensor cell each using the optical waveguide can be provided. The optical waveguide according to the present invention includes a cladding layer and a core layer buried in the cladding layer so that at least one surface of the core layer is exposed. The cladding layer has a surface hardness of HB to 2H.

Abstract: The present invention provides a method of inputting light into a core layer of a multimode optical waveguide. The optical waveguide includes an under-cladding layer; and the core layer formed so that at least a part of the core layer is adjacent to the under-cladding layer. The method includes inputting the light into the core layer so that a spot of the light at an input port-side end surface of the multimode optical waveguide completely includes an input port of the core layer; a spot area of the light at the input port-side end surface of the multimode optical waveguide is twice or more of an area of the input port of the core layer; and an angle of input range of the light at an input port end surface of the core layer is from 10° to 30°.

Abstract: There are provided an SPR sensor cell and sensor, both having very excellent detection sensitivity. The SPR sensor cell includes: an under-cladding layer; a core layer, at least a part of the core layer being adjacent to the under-cladding layer; and a metal layer covering the core layer. The core layer includes a uniform layer and a gradient layer arranged between the uniform layer and the under-cladding layer; a refractive index NCO of the uniform layer satisfies a relationship of 1.34?NCO<1.44; a refractive index NCL of the under-cladding layer and the refractive index NCO of the uniform layer satisfy a relationship of NCO?NCL?0.020; and a refractive index of the gradient layer gradually increases from an under-cladding layer side to a uniform layer side in a thickness direction of the gradient layer within a range of from more than the NCL to less than the NCO.

Abstract: There are provided an SPR sensor cell and an SPR sensor having a very excellent detection sensitivity. The SPR sensor cell of the present invention includes: an under-cladding layer; a core layer formed so that at least a part of the core layer is adjacent to the under-cladding layer and having a light entrance and a light exit; and a metal layer covering a part of the core layer. A sectional area (S1) of the core layer at the light entrance and a sectional area (S2) of the core layer at the part covered by the metal layer satisfy a relationship of S1>S2.

Abstract: The present invention provides a sensor cell that has excellent measurement accuracy in repetitive measurement. An optical waveguide of the present invention includes a cladding layer and a core layer buried in the cladding layer so that at least one surface of the core layer is exposed. A water contact angle of a surface of the cladding layer on which the core layer is exposed is 80° or more. An SPR sensor cell and a colorimetric sensor cell of the present invention each include the optical waveguide of the present invention.

Abstract: The present invention provides an SPR sensor cell having very excellent detection sensitivity, the SPR sensor cell including: an under-cladding layer; a core layer formed so that at least a part of the core layer is adjacent to the under-cladding layer; and a metal layer covering the core layer. In the SPR sensor cell, the core layer includes a uniform refractive index layer and a graded refractive index layer. The graded refractive index layer is arranged between the uniform refractive index layer and the metal layer. A refractive index of the graded refractive index layer is equal to or more than a refractive index of the uniform refractive index layer, and the refractive index of the graded refractive index layer increases continuously from a surface thereof on a uniform refractive index layer side to the metal layer side in a thickness direction of the graded refractive index layer.

Abstract: The present invention provides a method of inputting light into a core layer of a multimode optical waveguide. The optical waveguide includes an under-cladding layer; and the core layer formed so that at least a part of the core layer is adjacent to the under-cladding layer. The method includes inputting the light into the core layer so that a spot of the light at an input port-side end surface of the multimode optical waveguide completely includes an input port of the core layer; a spot area of the light at the input port-side end surface of the multimode optical waveguide is twice or more of an area of the input port of the core layer; and an angle of input range of the light at an input port end surface of the core layer is from 10° to 30°.

Abstract: There are provided an SPR sensor cell and sensor, both having very excellent detection sensitivity. The SPR sensor cell includes: an under-cladding layer; a core layer, at least a part of the core layer being adjacent to the under-cladding layer; and a metal layer covering the core layer. The core layer includes a uniform layer and a gradient layer arranged between the uniform layer and the under-cladding layer; a refractive index NCO of the uniform layer satisfies a relationship of 1.34?NCO<1.44; a refractive index NCL of the under-cladding layer and the refractive index NCO of the uniform layer satisfy a relationship of NCO?NCL?0.020; and a refractive index of the gradient layer gradually increases from an under-cladding layer side to a uniform layer side in a thickness direction of the gradient layer within a range of from more than the NCL to less than the NCO.

Abstract: A manufacturing method for a polymer optical waveguide, which allows a wide choice of materials, is improved in reproducibility of processing and in yield, and is inexpensive. A manufacturing method for a polymer optical waveguide according to an embodiment of the present invention includes: arranging a curable composition for core formation on a surface of a mold having a recess corresponding to a core shape; attaching a transfer film onto the surface of the mold while pressing the transfer film in a predetermined direction to fill the recess with the curable composition for core formation and to remove an excess of the curable composition for core formation; curing the curable composition for core formation to form a core; peeling the transfer film from the mold to transfer the core onto the transfer film; and forming a first cladding so as to cover the core on the transfer film.

Abstract: There are provided an SPR sensor cell and an SPR sensor having a very excellent detection sensitivity. The SPR sensor cell of the present invention includes: an under-cladding layer; a core layer formed so that at least a part of the core layer is adjacent to the under-cladding layer and having a light entrance and a light exit; and a metal layer covering a part of the core layer. A sectional area (S1) of the core layer at the light entrance and a sectional area (S2) of the core layer at the part covered by the metal layer satisfy a relationship of S1>S2.

Abstract: The present invention provides an SPR sensor cell having very excellent detection sensitivity and an SPR sensor. The SPR sensor cell of the present invention includes a detection unit and a sample mounting portion adjacent to the detection unit, wherein the detection unit includes an under-cladding layer, a core layer formed so that at least a part of the core layer is adjacent to the under-cladding layer, a metal layer covering the core layer, and a protective layer formed between the core layer and the metal layer; and the protective layer is formed of a metal oxide.

Abstract: The present invention provides an SPR sensor cell having very excellent detection sensitivity and an SPR sensor. The SPR sensor cell of the present invention includes a detection unit and a sample mounting portion adjacent to the detection unit, wherein the detection unit includes an under-cladding layer, a core layer formed so that at least a part of the core layer is adjacent to the under-cladding layer, a metal layer covering the core layer, and a protective layer formed between the core layer and the metal layer; and the protective layer is formed of a material having a band gap (Eg) of more than 1.0 eV and less than 7.0 eV.

Abstract: Provided are an SPR sensor cell having very excellent detection sensitivity and an SPR sensor. The SPR sensor cell includes a detection unit; and a sample mounting portion adjacent to the detection unit, wherein the detection unit includes an under clad layer, a core layer formed so that at least apart thereof is adjacent to the under clad layer, a metal layer covering the core layer, and a coat layer covering the metal layer; the coat layer is formed of a material having a band gap (Eg) of more than 1.0 eV and less than 7.0 eV; and a refractive index of the coat layer is higher than a refractive index of the core layer.

Abstract: Provided are an SPR sensor cell having very excellent detection sensitivity and an SPR sensor. The SPR sensor cell includes a detection unit; and a sample mounting portion adjacent to the detection unit, wherein: the detection unit includes an under clad layer, a core layer provided so that at least a part thereof is adjacent to the under clad layer, a metal layer covering the core layer, and a coat layer covering the metal layer; and the coat layer is made of a metal oxide and has a refractive index higher than a refractive index of the core layer.

Abstract: An SPR sensor cell is an SPR sensor cell including an optical waveguide to be brought into contact with a sample. The optical waveguide includes an under clad layer, a core layer provided in the under clad layer such that at least a part thereof is exposed from the under clad layer, and a metal particle layer covering the core layer exposed from the under clad layer to be brought into contact with the sample.