Spectral oil immersion cell
AssigneeHughes Electronics Corporation
InventorsMargarete Neumann, Robert Pursel
Life of this patent
Estimating the term…
Abstract
A device for holding and positioning a sample (22) during spectral analysis, having an optical cell (41) comprised of a base member (42), a glass cell (44), and being filled with oil (46) having substantially the same index of refraction as the glass cell (44). The device further includes a rotary stage device (48) attached to the optical cell (41) and a sample holder (50) attached to the rotary stage device (48) such that a sample (22) may be rotated over a range of angles relative to a projected beam (32) to provide a spectral analysis of the sample (22) over the range of angles.
Claims20
A spectral oil immersion cell for holding and positioning a sample during spectral analysis in which a beam is projected at the sample, said spectral oil immersion cell comprising:
- an optical cell including a glass cell having a given index of refraction and being substantially filled with an oil having substantially the same index of refraction as said glass cell so that said optical cell effectively functions as a solid block of glass;
- a rotary stage device being connected to said optical cell;
- and
- a sample holder for holding said sample, said sample holder being attached to said rotary stage device and projecting into an interior chamber of said optical cell, said interior chamber being formed by said glass cell and a base member, wherein rotation of said sample allows for measurement of a spectral performance of said sample over a range of angles relative to said beam.
A method for supporting and testing the spectral properties of a sample, said method comprising:
- providing an optical cell having walls with a given index of refraction, and creating an interior chamber therein;
- filling said optical cell with an oil having substantially the same index of refraction as said walls;
- attaching said sample to a sample holder;
- placing said sample holder into said interior chamber such that said sample is submerged in said oil;
- rotating said sample holder to a first position;
- transmitting a first beam from a fixed beam generator at said optical cell such that said first beam passes through said walls and said oil, and impinges upon said sample;
- detecting a first component of said first beam with a first detector;
- rotating said sample holder to a second position;
- transmitting a second beam from said fixed beam generator at said optical cell such that said second beam passes through said walls and said oil, and impinges upon said sample;
- and
- detecting a first component of said second beam with said first detector.
An apparatus for testing the optical performance of a sample over a range of angles, said apparatus comprising:
- a fixed beam generator for creating a beam;
- a first detector for detecting a transmitted component of said beam;
- a sample holding device having a cell with a given index of refraction and being substantially filled with an oil having substantially the same index of refraction as said cell, said sample holding device providing for rotation of said sample about an axis perpendicular to a plane of incidence created by said beam wherein said beam, having known properties, is projected at said sample and impinges upon said sample, said transmitted component of said beam being detected by said first detector after said beam impinges upon said sample.
Dependencies are inferred from the claim text.