| 摘要 |
PCT No. PCT/SE92/00265 Sec. 371 Date Nov. 14, 1994 Sec. 102(e) Date Nov. 14, 1994 PCT Filed Apr. 23, 1992 PCT Pub. No. WO92/19931 PCT Pub. Date Nov. 12, 1992.An optoelectronic measuring scale for determining and indicating position of light emitted from a beam source is provided. The measuring scale comprises a composite unit including a profiled body, a number of discrete photoelements fixedly mounted on a circuit board or similar device in the body and connected to a microprocessor attached to the circuit board. Mounted in the measuring scale is a diffusor for distributing incident light such that the intensity of such incident will be distributed over a plurality of mutually adjacent photoelements. The microprocessor detects and compares the intensity of light detected by respective photoelements and, based on the intensity of light detected by the photoelements, produces output currents for causing the exact position of the light beam to be indicated on a display connected to the scale. |
