Abstract: An optical unit contains an optical element made of resin obtained by integrally forming a reflector in which a reflecting surface which reflects a light flux is formed on an outer peripheral side surface, and a flange extending in a direction orthogonal to the reflector to support the reflector; a rotary driving body which rotates the optical element; and a connecting device which connects the flange of the optical element to the rotary driving body, the optical element being capable of rotating around a rotational axis of the rotary driving body.

Abstract: An optical unit contains an optical element made of resin obtained by integrally forming a reflector in which a reflecting surface which reflects a light flux is formed on an outer peripheral side surface, and a flange extending in a direction orthogonal to the reflector to support the reflector; a rotary driving body which rotates the optical element; and a connecting device which connects the flange of the optical element to the rotary driving body, the optical element being capable of rotating around a rotational axis of the rotary driving body.

Abstract: The brewing vinegar produced by zymolysis and alcohol fermentation in the bean jam particle of sloppy legumes such as adzuki bean in paraellel, and subsequently its acetic acid fermentation and its manufacturing method. By this manufacturing method the alcohol fermentation in the product by zymolysis is performed immediately, which shows the effective prevention of corruption by pest bacteria. Brewing vinegar containing abundant polyphenol is produced by the acetic acid fermentation performed sequentially.