OPTICAL SYSTEM, OPTICAL SENSING DEVICE, LENS FABRICATION FORM, OPTICAL SYSTEM MANUFACTURING PROCEDURE FOR DISCRIMINATING DISKS ACCORDING TO THEIR THICKNESS, FOR FOCUS DETECTION AND FOR INFORMATION RECORDING AND READ-OUT

摘要

The present invention relates to ophthalmic and ophthalmic device in the focal area of a beam with a focal lens having a predetermined effective diameter, a beam extending in the middle of the beam, moreover, a lens-making dermal, which is formed on the surface of at least one of the halves of the dungeon, at least one refractive surface of defined pattern. The invention further relates to a method of making a lens in which a light-beam modifying ring is formed in a main beam, and a method for discriminating between a transverse and transverse luminal converting the focal surface bobbin, converting the center beam and peripheral beam reflected from the surface of the disk (300a, 300b) into quadrant capillary detector flashes; characteristic of small blade disc, with first reference sum mark and focal defect, it is considered to be slight if the disc signal is larger than the first reference signal, if the disc sum or focal error is greater than the first reference signal, the measured sum signal and focal error signal are compared with the it is considered if the disc gain and focus error signal is larger than the second reference signal. Further, the invention further provides a method for detecting foci, at least two discs of different thicknesses being selected, wherein a portion of the center beam and peripheral beam of the beam is flickered, the center beam of the disc (300a, 300b), and The invention further provides a method for recording infrared information, with at least two discs of different thicknesses being selected, wherein ) the middle beam and the peripheral beam a focus rocking surface and a method for reading infrared information, with at least two discs of different thicknesses being selectable,