Optical arrangement for photometrical analysis measuring devices
First Claim
1. An optical arrangement in a photometrical measuring device for analyzing a sample material, comprisinga light emitting system for emitting a bundle of monochromatic radiation to propagate along an optical axis, said light emitting system having a field aperture for said monochromatic radiation,a lens,a sample mount for mounting a material to be analyzed,an optical imaging system,a detector means,said lens, said sample mount, said optical imaging system and said detector means being sequentially arranged in that order along said optical axis in mutual optical alignment,said optical imaging system having an aperture greater than that of the field aperture,said monochromatic radiation being focused onto a sample on said sample mount for producing a sample material radiation,said sample material radiation being composed of a first radiation portion containing measuring information of said sample material, and of a second radiation portion not containing measuring information,said first radiation portion being imaged through said optical imaging system onto said detector means for evaluation, andan optical member arranged adjacent to said optical imaging system along said optical axis, said optical member being removable from said optical arrangement in a direction at right angles to said optical axis, said optical member covering a portion of said optical imaging system.
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Abstract
An optical arrangement in photometrical measuring devices for use in fluorescence and absorption measurements, extinction, nephelometrical and turbidimetrical measurements comprises a light source for emitting a monochromatic radiation, a field aperture for said radiation, and lenses which focus said monochromatic radiation onto a sample material for being analyzed. The sample, in response to said monochromatic radiation emits a first radiation portion incorporating the measuring informations from said sample, and a second radiation portion not containing measuring information. An optical imaging system is provided for directing said first radiation portion onto a detector. A removable optical member for retaining the second radiation portion is provided adjacent the optical imaging system and has an aperture greater than the field aperture.
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10 Claims
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1. An optical arrangement in a photometrical measuring device for analyzing a sample material, comprising
a light emitting system for emitting a bundle of monochromatic radiation to propagate along an optical axis, said light emitting system having a field aperture for said monochromatic radiation, a lens, a sample mount for mounting a material to be analyzed, an optical imaging system, a detector means, said lens, said sample mount, said optical imaging system and said detector means being sequentially arranged in that order along said optical axis in mutual optical alignment, said optical imaging system having an aperture greater than that of the field aperture, said monochromatic radiation being focused onto a sample on said sample mount for producing a sample material radiation, said sample material radiation being composed of a first radiation portion containing measuring information of said sample material, and of a second radiation portion not containing measuring information, said first radiation portion being imaged through said optical imaging system onto said detector means for evaluation, and an optical member arranged adjacent to said optical imaging system along said optical axis, said optical member being removable from said optical arrangement in a direction at right angles to said optical axis, said optical member covering a portion of said optical imaging system.
Specification