| 摘要 |
PURPOSE:To increase productivity and to assure the stability in measurement accuracy by performing automatic supply, automatic focusing and automatic discharging according to the result of automatic decision of defective and non- defective of a plate-shaped lens. CONSTITUTION:Lenses discharged from lens supplying heads 16-18 via one of stockers 13-15 are fed via a conveying part 19 onto an inspection table 27. The result of measuring the lens width in a size measuring part 20 is successively shifted to respective stations. When the lens arrives in front of inspecting heads 22-25 for resolution and an inspecting head 26 for quantity of light, an operator adjust preliminarily a pattern disc and the surface of a photodetecting tube to the distance conforming to the focal length specific to the lens by turning a handle, then a pulse motor rotates at a specified angle in accordance with the result of the size measurement and an intermediate table moves by a specified size, by which the self-centering operation is automatically accomplished. The conveyance of the lens is started at the same instant, and the rotation of the pattern disc and the inspection of the lens are performed automatically. The light transmitted through the lens is converted to an electrical signal by the photodetecting tube and the data on the resolution and the quantity of light is obtd. |
