Resources Contact Us Home
Reflection type encoder, scale thereof and method for producing scale

Image Number 8 for United States Patent #8127993.

A reflection type encoder, which receives a plurality of light-receiving signals from a single scale, includes a light source, a scale having a plurality of patterns formed thereon to which light is irradiated from the light source, and a light-receiving element for receiving light reflected from each of the plurality of patterns, wherein a plurality of patterns each having different thicknesses are formed on a single track of the scale by using a dielectric substance, light of a plurality of wavelengths each having different brightnesses in accordance with differences in the thickness of the dielectric substance is irradiated from the light source, and a light-receiving signal is obtained for the respective thicknesses of the dielectric substance. Therefore, the scale can be downsized by overlapping a plurality of patterns on the same track.

  Recently Added Patents
Polynucleotide capture materials, and methods of using same
Amplitude-shift-keying (ASK) envelope detector and demodulation circuits
Method of requesting CQI reports
High-density fiber optic modules and module housings and related equipment
Device for identifying types of document files
Carbon blacks having low PAH amounts and methods of making same
Chip on chip semiconductor device including an underfill layer having a resin containing an amine-based curing agent
  Randomly Featured Patents
Wall panel mounting system
Egg temperature indicating device
Rail anchor application machine
H-bridge activator/deactivator and method for activating/deactivating EAS tags
Detection of objects on a computer display
Image reading apparatus and image forming apparatus
Oil cooled hermetic compressor used for helium service
Pivotal device for a playpen
Non-coherent FSK demodulator
Semiconductor package with passive elements embedded within a semiconductor chip