Abstract: A radial servo control device for a super-resolution optical disc includes an excitation light source, a servo light source, an integrated optical path, focusing units, a servo light detecting unit and a drive control unit; the drive control unit presets N detection error reference values with respect to each guide layer trench irradiated by servo light, and controls corresponding positions of the focusing units in N data tracks below each guide layer trench according to a comparison result between a detection result of servo reflected light and the detection error reference values. The device is applicable to a variety of super-resolution optical discs on the basis of stimulated radiation loss microscopy technology, a two-photon absorption technology, and the like, and achieves accurate radial servo control of super-resolution data tracks (<100 nm) without reducing the wavelength of servo light and the width of guide layer trenches.

Abstract: A radial servo control device for a super-resolution optical disc includes an excitation light source, a servo light source, an integrated optical path, focusing units, a servo light detecting unit and a drive control unit; the drive control unit presets N detection error reference values with respect to each guide layer trench irradiated by servo light, and controls corresponding positions of the focusing units in N data tracks below each guide layer trench according to a comparison result between a detection result of servo reflected light and the detection error reference values. The device is applicable to a variety of super-resolution optical discs on the basis of stimulated radiation loss microscopy technology, a two-photon absorption technology, and the like, and achieves accurate radial servo control of super-resolution data tracks (<100 nm) without reducing the wavelength of servo light and the width of guide layer trenches.

Abstract: This invention provides a preparation method of fermentation product of Cryptoporus volvatus (Peck) Schear and its clinical use, the said Cryptoporus volvatus (Peck) Schear is cultured on culture medium for fluid fermentation or solid fermentation to obtain mycelium of Cryptoporus volvatus (Peck) Schear, culture supernatant fluid and various metabolins, the culture medium of which contains glucose, maltose, yeast powder, peptone, inorganic salts and vitamins. The said fermentation product can be made into kinds of drug forms to prevent and treat irritability diseases, for example, bronchus asthma, allergic rhinitis, allergic gastroenteritis or ophthalmopathy which is caused by pollen, acarid, mildew or dust. Moreover, it can be used for preventing and treating cough.