A Novel Design for a Low-Backscatter Optical Aperture

Abstract

Conventional flat aperture designs introduce error and noise in optical/electro-optical applications when the aperture is placed in close proximity to a light source located within the system. Rays that are reflected off the blocked portion of The aperture and then are reflected again off of the light source and reenter the optical path introduce this error. A novel design for a low-backscatter aperture has been introduced and validated for a light measurement application. The new concept is predicated on a V- or cone-shaped aperture design that uses the law of reflection to direct blocked light rays away from the optical path. A light source application was used to validate the new design.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2001
Accession Number
ADA397735

Entities

People

  • Clarence E. Rash
  • John C. Mora

Organizations

  • United States Army Aeromedical Research Lab

Tags

Communities of Interest

  • Biomedical
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Angle Of Incidence
  • Backscattering
  • Classification
  • Detectors
  • Electro-Optics
  • Electromagnetic Scattering
  • Light Sources
  • Measurement
  • Optical Materials
  • Optical Phenomena
  • Optics
  • Photometers
  • Physics
  • Ray Tracing
  • Reflection
  • Security
  • Test And Evaluation

Fields of Study

  • Physics

Readers

  • Atmospheric Remote Sensing.
  • Phased Array Antenna Design.