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Micro ring grating spectrometer with adjustable aperture

  • US 8,094,306 B2
  • Filed: 06/19/2009
  • Issued: 01/10/2012
  • Est. Priority Date: 08/15/2008
  • Status: Expired due to Fees
First Claim
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1. A spectrometer comprising:

  • a micro-ring grating device having a plurality of coaxially-aligned ring gratings, wherein the grating device is configured for diffracting a predetermined frequency band of incident light onto a target focal point;

    a detection device operable for detecting a predetermined spectral characteristic;

    at least one actuator; and

    an adjustable aperture device defining a circular aperture circumscribing the target focal point, wherein the aperture device is operable for directing a selected portion of the predetermined frequency band to the detection device;

    wherein the adjustable aperture device is selectively adjustable using the at least one actuator to thereby direct the selected portion of the predetermined frequency band to the detection device.

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