Abstract: Certain embodiments provide a marker for detecting a detection target substance, including an assay reagent having a medium, and a composition containing a solvent or a solvent mixture, and a fluorescent coagulation factor that has a fluorescence property that changes as it coagulates in presence of the detection target substance. A difference of a hydrophobicity parameter LogP between the solvent and a part or the entirety of the detection target substance is equal to or smaller than 1.53.

Abstract: A freshness label structure includes a label structure and a sealing member. The label structure includes a base material and a phosphor layer. The phosphor layer includes an aggregation-induced phosphor fixed to the base material. The sealing member is impermeable to aqueous liquid, seals the freshness label structure, and includes a porous member impermeable to aqueous liquid and permeable to gas.

Abstract: According to one embodiment, a freshness measurement system capable of quantitatively evaluating the freshness of a perishable food by a simpler method than a related art is provided. A freshness measurement system according to an embodiment includes an irradiation unit, a measurement unit, and a processing unit. The irradiation unit irradiates a phosphor that changes the intensity of fluorescence according to the concentration of a component released from a test subject with an excitation light. The measurement unit measures the intensity of fluorescence emitted by the phosphor. The processing unit determines the freshness index of the test subject using the intensity. The freshness index is, for example, a K value.

Abstract: A freshness label in an embodiment includes a base material having a fluid retention capacity and a phosphor layer on a surface of the base material. The phosphor layer includes an aggregation-induced phosphor. The base material has a porous or mesh structure. The aggregation-induced phosphor comprises a phosphor having a polar functional group or the like. The freshness label can be used to detect spoilage and/or deterioration of fresh food according to changed in fluorescence intensity provided by the aggregation-induced phosphor.

Abstract: Disclosed herein is a fluorescent compound represented by the following general formula and having fluorescence characteristics that vary in the presence of a subject substance, wherein R1 and R2 each independently represent a carboxyl group, or a substituent containing a carboxyl group, and R3 and R4 each independently represent a hydrogen atom, an alkyl group, an alkoxy group, a halogen atom, a hydroxyl group, a carboxyl group, or a substituent containing a carboxyl group.

Abstract: Certain embodiments provide a marker for detecting a detection target substance, including an assay reagent having a medium, and a composition containing a solvent or a solvent mixture, and a fluorescent coagulation factor that has a fluorescence property that changes as it coagulates in presence of the detection target substance. A difference of a hydrophobicity parameter LogP between the solvent and a part or the entirety of the detection target substance is equal to or smaller than 1.53.

Abstract: Disclosed herein is a fluorescent compound represented by the following general formula and having fluorescence characteristics that vary in the presence of a subject substance, wherein R1 and R2 each independently represent a carboxyl group, or a substituent containing a carboxyl group, and R3 and R4 each independently represent a hydrogen atom, an alkyl group, an alkoxy group, a halogen atom, a hydroxyl group, a carboxyl group, or a substituent containing a carboxyl group.

Abstract: Disclosed herein is a fluorescent compound represented by the following general formula and having fluorescence characteristics that vary in the presence of a subject substance, wherein R1 and R2 each independently represent a carboxyl group, or a substituent containing a carboxyl group, and R3 and R4 each independently represent a hydrogen atom, an alkyl group, an alkoxy group, a halogen atom, a hydroxyl group, a carboxyl group, or a substituent containing a carboxyl group.

Abstract: Disclosed herein is a fluorescent compound represented by the following general formula and having fluorescence characteristics that vary in the presence of a subject substance, wherein R1 and R2 each independently represent a carboxyl group, or a substituent containing a carboxyl group, and R3 and R4 each independently represent a hydrogen atom, an alkyl group, an alkoxy group, a halogen atom, a hydroxyl group, a carboxyl group, or a substituent containing a carboxyl group.

Abstract: A method of manufacturing a lens array includes forming a plurality of lenses on a transparent substrate, depositing a uv-curable ink on the transparent substrate around the plurality of lenses, and curing the uv-curable ink to form a light-shielding film disposed on the transparent substrate around the plurality of lenses. The inside of the light-shielding film is heated after the uv-curable ink is cured.

Abstract: An amine compound detection marker has a composition that allows for detection of an amine compound, in particular histamine, with high sensitivity. The composition of the amine compound detection marker comprises a solvent and an aggregate phosphor that aggregates as a result of coexistence with an amine compound when an extract liquid of the analyte containing the amine compound comes into contact with the composition. The aggregate phosphor is a tetraarylethene compound represented by the following formula (1).

Abstract: A lens array comprises a plurality of lenses disposed on a transparent substrate, and a light-shielding film disposed on the transparent substrate around the plurality of lenses, wherein the light-shielding film comprises a cured uv-curable ink containing a thermal acid generator. A method of manufacturing a lens array includes forming a plurality of lenses on a transparent substrate, depositing a uv-curable ink on the transparent substrate around the plurality of lenses, and curing the uv-curable ink to form a light-shielding film disposed on the transparent substrate around the plurality of lenses, wherein the inside of the light-shielding film is heated after the uv-curable ink is cured.

Abstract: Provided herein is an amine compound sensing marker capable of easily sensing an amine compound with high sensitivity. An amine compound sensing marker of an exemplary embodiment includes a sensing body as a retention medium where a composition containing an aggregative phosphor and a solvent is provided, the aggregative phosphor being a phosphor that aggregates and shows a fluorescence characteristics change in the presence of an amine compound. The retention medium is processed from a glass fiber.

Abstract: A lens array comprises a plurality of lenses disposed on a transparent substrate, and a light-shielding film disposed on the transparent substrate around the plurality of lenses, wherein the light-shielding film comprises a cured uv-curable ink containing a thermal acid generator. A method of manufacturing a lens array includes forming a plurality of lenses on a transparent substrate, depositing a uv-curable ink on the transparent substrate around the plurality of lenses, and curing the uv-curable ink to form a light-shielding film disposed on the transparent substrate around the plurality of lenses, wherein the inside of the light-shielding film is heated after the uv-curable ink is cured.

Abstract: Certain embodiments provide a marker for detecting a detection target substance, including an assay reagent having a medium, and a composition containing a solvent or a solvent mixture, and a fluorescent coagulation factor that has a fluorescence property that changes as it coagulates in presence of the detection target substance. A difference of a hydrophobicity parameter LogP between the solvent and a part or the entirety of the detection target substance is equal to or smaller than 1.53.

Abstract: A lens array comprises a plurality of lenses disposed on a transparent substrate, and a light-shielding film disposed on the transparent substrate around the plurality of lenses, wherein the light-shielding film comprises a cured uv-curable ink containing a thermal acid generator. A method of manufacturing a lens array includes forming a plurality of lenses on a transparent substrate, depositing a uv-curable ink on the transparent substrate around the plurality of lenses, and curing the uv-curable ink to form a light-shielding film disposed on the transparent substrate around the plurality of lenses, wherein the inside of the light-shielding film is heated after the uv-curable ink is cured.

Abstract: A freshness indicating medium includes a base member having a first region and a second region. Both the first and second regions contain a reactive material that changes a state thereof by reaction with a food-derived material that is generated as the food product putrefies, such that, as an amount of the food-derived material increases, the reactive material in the first region changes the state before the reactive material in the second region does.

Abstract: A light blocking ink includes a vinyl ether compound, an alicyclic epoxy compound, an oxetane compound, a light blocking material, and a photoacid generating agent. The light blocking ink may be employed in a microlens array unit to block stray light. The microlens array unit may be employed in an image processing apparatus.

Abstract: A lens array comprises a plurality of lenses disposed on a transparent substrate, and a light-shielding film disposed on the transparent substrate around the plurality of lenses, wherein the light-shielding film comprises a cured uv-curable ink containing a thermal acid generator. A method of manufacturing a lens array includes forming a plurality of lenses on a transparent substrate, depositing a uv-curable ink on the transparent substrate around the plurality of lenses, and curing the uv-curable ink to form a light-shielding film disposed on the transparent substrate around the plurality of lenses, wherein the inside of the light-shielding film is heated after the uv-curable ink is cured.

Abstract: A freshness indicating medium includes a base member having a first region and a second region. Both the first and second regions contain a reactive material that changes a state thereof by reaction with a food-derived material that is generated as the food product putrefies, such that, as an amount of the food-derived material increases, the reactive material in the first region changes the state before the reactive material in the second region does.