Annular optical device

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United States of America Patent

PATENT NO 8508734
APP PUB NO 20130135613A1
SERIAL NO

13814669

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Abstract

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An annular optical device (100) includes an annular meso-optic (1) including an annulus (11) centered about an axis of revolution (A) and a secondary optical structure (2) substantially coaxial within the annulus (11). The secondary optical structure (2) and the annular meso-optic (1) are separated by a media (12) including a media refractive index that is lower than the refractive index of the secondary optical structure. The secondary optical structure (2) holds a specimen to be radiated by impinging electromagnetic radiation. Scattered radiation from the secondary optical structure (2) and within the annulus (11) of the annular meso-optic (1) is allowed into the annular meso-optic (1) if an angle of incidence of the scattered radiation exceeds a predetermined incidence threshold. The annular meso-optic (1) re-directs the scattered radiation to comprise re-directed radiation that is substantially parallel to the axis of revolution (A).

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Patent Owner(s)

  • HACH COMPANY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Palumbo, Perry A Fort Collins, US 19 195

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