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
High-order harmonic device of cavity filter
Bi-directional switch using series connected N-type MOS devices in parallel with series connected P-type MOS devices
Process for preparing higher hydridosilanes
Digital microwave radio link with adaptive data rate
Data recording apparatus with recording control based on defect block and control method thereof
Communication system
Method and apparatus for transmitting and receiving a signal in a communication system
  Randomly Featured Patents
Extremely high liquid barrier fabrics
Cascading architecture for audio and video streams
Method for adaptive hybrid selection during ADSL modem training
Serving tongs or the like
Tree stand torso bar
Extendable and retractable auxiliary axle for transportable conveyor system
Shoe insole
Process for the (co)polymerization of ethylene
Optical receptacle and optical module with optical receptacle
Tunable filter for optical add/drop module