TECHNOLOGY FOCUS - CERAMICS AND GLASS - Preferred Components: The transparent substrate is formed of glass.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: In the protective sheet, a region, in which a tangent to a convex surface forming a part of the convexity/concavity structure makes an angle of less than or equal to 60 degrees with a normal to a substrate surface, and has an area accounting for greater than or equal to 5% of a whole area of the convexity/concavity structure. The convexity/concavity structure is configured so that a sectional shape in a normal direction to the transparent substrate is approximate to either a part of a circle or a triangle where a bottom size is 200nm to 1000 mu m as expressed in terms of diameter, and a convexities count is 1-2.5x 109/1 cm2. The convexities and concavities have an average size of less than or equal to 2 mm.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The transparent resin layer: is formed of either a resin or a resin and an inorganic material; and comprises a thermosetting resin or a photo-curing resin. Preferred Process: The surface of the transparent resin layer is pressed against a combination of a mold having fine convexities/concavities and a thread-form member or continuously engaged with or scraped off by a rigid member having projections or claws to form concavities, thus providing a convexity/concavity texture. In the process, after the step (a), convexities/concavities are provided by photo masking or photo-molding. The transparent resin is laminated by printing in a pattern having fine convexities/concavities to provide a convexity/concavity structure. EXAMPLE - Polyethylene glycol dimethacrylate (83 parts by weight) was mixed under agitation with trifluoroethyl methacrylate (15 parts by weight) and titanocene type polymerization initiator into an UV curing resin. Then a Teflon (RTM: Polytetrafluoroethylene) sheet was provided, and on its surface a mesh of glass cloth was embossed at a pitch of 200 mu m and a depth of 50 mu m. The sheet was then wound around a rubber roll to form a mold (having 2500 convexities/concavities/1 cm2). Then, the UV curing resin was coated by a pipette near one side of a colorless sheet glass, and the mold was pressed against the colorless sheet glass from the side with the resin coated on it and rolled toward the opposite side, simultaneously, a high-pressure mercury lamp was located just below the mold with the colorless sheet glass sandwiched between them, and the resin was cured in association with mold pressing to obtain the protective sheet.