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
Systems, devices, methods, and compositions including fluidized x-ray shielding compositions
Profile and template based dynamic portable user workflow
Systems and methods for authorizing, authenticating and accounting users having transparent computer access to a network using a gateway device
Fan guide
Register files for a digital signal processor operating in an interleaved multi-threaded environment
Method and system for associating a cell-sector with time-dependent location parameters
Cryptographic key split combiner
  Randomly Featured Patents
Hinge mechanism for a monitor of an overhead console
Magnetic tunnel junction device and memory device including the same
Enhanced BGA grounded heatsink
Continuously operating severing machine
Grease composition
Ceiling fan light fixture
Motor control apparatus and motor control method
Method of making a textured venetian blind
Red mixtures of disperse azo dyestuffs
Displaying method and apparatus of the system status