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

Image Number 7 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
Playlist search device, playlist search method and program
Printing apparatus and method of operation of a printing apparatus
Method, system and computer program product for managing funds in custodial deposit accounts
Starch networks as absorbent or superabsorbent materials and their preparation by extrusion
Optical article including an antireflecting coating having antifog properties and process for making same
Electrophoresis display having touch screen and method for driving the touch screen
Method and apparatus for connecting to external device
  Randomly Featured Patents
Protector for use with infusion pumps
Counter track joint with a ball cage
Automobile cleaning and waxing tool
Portable telephone
Phasar athermalization using a slab waveguide
Headset with exchangeable speaker
Method and system for disseminating stored programs and data
System for rectifying and limiting current and reducing voltage
Antenna device and wireless communication apparatus including the same
Inbred maize line PH5TG