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
Image processing unit, image processing method and program
Authenticating messages sent between a vehicle and a central facility
Adsorptive molded parts and the use thereof
Magnetic resonance imaging apparatus for use with radiotherapy
System and method for monitoring network activity
Light emitting element, method for manufacturing the light emitting element, optical element and method for manufacturing the optical element
Compound semiconductor epitaxial structure and method for fabricating the same
  Randomly Featured Patents
Tape cartridge
Method for operating a multi-cylinder jump-spark ignition engine and operation control system thereof
Apparatus and method for test and debug of a processor/core having advanced power management
Reconfiguration of a communication system
Bench-center instrument
Copper-based metallizations for hybrid integrated circuits
Molded plastic container having insert-molded insert and method of manufacture
Circuit for sensing a communication state
System and method for monitoring contamination
Family of multi-speed transmission mechanisms having two input clutches