A rotary tablet press having a rotatably driven rotor and a die plate with a plurality of die bores. A plurality of upper and lower punches are configured to produce tablets in the plurality of die bores. The tablets are monitored for one or more characteristics and are sorted by an ejection apparatus according to the one or more characteristics into a reject channel and a satisfactory channel.

A method for manufacturing an optical element includes heating an optical material up to a first temperature that is higher than a transition point, pressurizing the optical material using a first mold and a second mold that are situated opposite to each other across the optical material, first cooling the optical material down to a second temperature that is higher than a strain point and lower than the first temperature while pressurizing the optical material with a predetermined load using the first mold and the second mold, releasing the predetermined load at a set speed that is higher than or equal to a speed obtained in advance, at which an elastic deformation occurs preferentially over a viscous deformation in the optical material upon releasing a load, and second cooling the optical material down to a third temperature that is lower than the second temperature.

Provided is an imprint apparatus for contacting a resin applied to a substrate with a mold to perform patterning on the substrate. The imprint apparatus includes a substrate holding unit for holding the substrate, wherein the substrate holding unit comprises a plurality of holding areas arranged in a predetermined direction, the plurality of holding areas has different width dimension in the direction respectively based on positions in the direction, a surface ratio between two holding areas of the plurality of holding areas with different width dimension respectively is within a range of 0.8 to 1.2.