Resources Contact Us Home
Wavelength selection, multiplexing and demultiplexing method and apparatus

Image Number 6 for United States Patent #6038076.

Wavelength selection apparatus for use in various applications such as spectrometry, the demultiplexing/multiplexing of multiline laser beams, and so forth, includes an input prism and an output prism aligned along an optical axis, and at least one side mirror. A second side mirror spaced from the first side mirror on the opposite side of the optical axis may be provided, as well as end mirrors adjacent to the input and output prisms. An incoming beam incident upon the input prism is refracted so as to deflect and angularly disperse the various wavelengths present in the input beam, with the dispersing beam reflected from the first side mirror either directly to the output prism or with intermediate reflections from the second side mirror and the end mirrors before impinging upon the output prism. The output prism matches the input prism and deflects and recollimates the dispersed wavelengths to provide parallel output beams of different wavelengths spaced from one another. Selection of a desired wavelength in the output beam may be obtained by moving the input and output prisms with respect to each other axially until the desired output beam is moved to a position in which it passes through an aperture.

  Recently Added Patents
Image forming unit having agitating portion and image forming apparatus
Transistor and display device
Color image forming apparatus with contact control of process units
Digital-to-analog converter and performing method thereof
Detachably integrated battery charger for mobile cell phones and like devices
Organic metal complex and its use in organic electroluminescent device
High-frequency power amplifier
  Randomly Featured Patents
Switch connection adapter
Solar cell phone
Cover for sanitary pipe fittings
Terrestrial based high speed data communications mesh network
Phase cancellation in a multi-output distribution amplifier at crossover frequency
System and method for performing processing in a testing system
Hypodermic injection system
Method and apparatus for mounting concaves
Multi-mode block-coded modulation/demodulation method
Trash pick-up and collection system