Abstract: Provided is an inorganic polarizing plate having a wire grid structure including: a transparent substrate; and grid-shaped protrusions arranged on the transparent substrate at a pitch shorter than a wavelength of light in a use band, in which the grid-shaped-protrusion includes, in order from the transparent substrate side, a reflection layer and a reflection suppressing layer which includes a dielectric material and a non-dielectric material and of which a content of the non-dielectric material increases as a separation from the reflection layer increases. In addition, provided are a method of manufacturing the inorganic polarizing plate and an optical instrument including the inorganic polarizing plate.

Abstract: A small reactor, which contains an inorganic transparent substrate, which contains: a reaction channel configured to allow a chemical reaction to proceed therein; a supply channel, which is connected to one end of the reaction channel, and is configured to supply samples to be reacted in the reaction channel; and a discharge channel, which is connected to the other end of the reaction channel, and is configured to discharge a reaction product from the reaction channel, wherein the inorganic transparent substrate is in the shape of an arc-shaped curve.

Abstract: A small reactor, which contains an inorganic transparent substrate, which contains: a reaction channel configured to allow a chemical reaction to proceed therein; a supply channel, which is connected to one end of the reaction channel, and is configured to supply samples to be reacted in the reaction channel; and a discharge channel, which is connected to the other end of the reaction channel, and is configured to discharge a reaction product from the reaction channel, wherein the inorganic transparent substrate is in the shape of an arc-shaped curve.

Abstract: A small-sized reactor having practical utility in light of a bonding force, ease in observation, exemption from impurities and high resistance against pressure, is provided. In bonding a plural number of inorganic transparent substrates (11) to (13) to form a small-sized reactor, surfaces for bonding (16) to (19) of the inorganic transparent substrates (11) to (13), bonded on contact to one another, are initially polished and planarized. A part of the surface of each of the surfaces for bonding is then machined. The surfaces for bonding (16) to (19) are then hydrophilicity enhanced and washed with pure water. A film of pure water is swung off and removed by a centrifugal force. The resultant product is then heated with the surfaces for bonding in contact with one another. The surfaces for bonding, in contact with one another, may be bonded together by chemical bonding via oxygen to form small-sized reactors (1), (2) in which the inorganic transparent substrates (11) to (13) are bonded together strongly.