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Spectrometer assembly

  • US 6,362,888 B1
  • Filed: 06/13/2001
  • Issued: 03/26/2002
  • Est. Priority Date: 12/23/1999
  • Status: Expired due to Term
First Claim
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1. A spectrometer assembly comprising;

  • a plurality of optical sensors, wherein the plural of optical sensors include an array of sensors each of which generates a signal having a frequency proportional to the light intensity received by the particular sensor;

    a plurality of interference filter elements, wherein a plurality of interference filter elements are positioned correspondingly to a plurality of the optical sensors, wherein the plurality of interface filters each substantially pass light in a predetermined spectral band or bands and reflect light outside of the predetermined band or bands, wherein collectively the plurality of interference filter elements positioned correspondingly to a plurality of the optical sensors span a predetermined spectral band or bands, a light input;

    wherein light that is input to the light input is directed to a first one of the plurality of interference filter elements positioned correspondingly to a plurality of the optical sensors, wherein a portion of the light passes through the first one of the plurality of interference filter elements and is sensed by a first one of the plurality of optical sensors, wherein light that does not pass through the first one of the plurality of interference filters is substantially reflected and propagated to a second one of the plurality of interference filter elements positioned correspondingly to a plurality of the optical sensors, wherein a portion of the light passes through the second one of the plurality of interference filter elements and is sensed by a second one of the plurality of optical sensors, wherein light that does not pass through the second one of the plurality of interference filters is substantially reflected and propagated to one or more subsequent ones of the plurality of interference filter elements positioned correspondingly to a plurality of the optical sensors and sensed by corresponding optical sensors;

    wherein a plurality of the optical sensors sense light that is propagated through the spectrometer assembly, wherein a processing element receives a plurality of signals each having a frequency proportional to the light intensity received by the particular sensor, wherein the processing element generates data indicative of the spectral characteristics of the light that is input to the light input based on the plurality of signals.

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