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
Rechargeable battery
Use of emerging non-volatile memory elements with flash memory
Projection screen and projection system having the same
Stowable pet leash and collar
Motilin-like peptide compound having transmucosal absorbability imparted thereto
Maize variety hybrid X03A157
Identification of websites that break out of frames
  Randomly Featured Patents
Tissue holder
Silicon wafer and method for producing the same
Sprocket receptacle cleaner embodied in a track section
Louvred shutter
Method of communications between register-modelled radio devices
Potassium ion channel blockers
Method for increasing the efficiency of surfactants with simultaneous suppression of lamellar mesophases and surfactants with an additive added thereto
Assembled camshaft
Anaesthetic mixtures containing enflurane or isoflurane in combination with sevoflurane or desflurane
M6 block cipher system and method for encoding content and authenticating a device