Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
139 words
An optical transmission spectrometer for absorbing and scattering sample readings, comprising: a plurality of light sources for producing light, the absorption of which in a sample is to be measured by the spectrometer; a holder for said plurality of light sources; a light beam-combiner for combining beams of light from said light sources by refraction into a primary beam of light, said light beam combiner including first and second parallel refractive surfaces for refracting light from said light sources into said primary beam; a first collimating device adjacent said light beam-combiner for baffling stray light passing from the said light beam-combiner and the light source; a mounting assembly for mounting a sample in the optical transmission spectrometer adjacent said first collimating device; and a detection assembly for detecting absorption of light passing through a sample in said mounting assembly.
Claim 2
Dependent Claim
139 words
An optical transmission spectrometer for absorbing and scattering sample readings, comprising: a plurality of light sources for producing light, the absorption of which in a sample is to be measured by the spectrometer; a holder for said plurality of light sources; a light beam-combiner for combining beams of light from said light sources by refraction into a primary beam of light, said light beam combiner including first and second parallel refractive surfaces for refracting light from said light sources into said primary beam; a first collimating device adjacent said light beam-combiner for baffling stray light passing from the said light beam-combiner and the light source; a mounting assembly for mounting a sample in the optical transmission spectrometer adjacent said first collimating device; and a detection assembly for detecting absorption of light passing through a sample in said mounting assembly.
Claim 3
Dependent Claim
56 words
The optical transmission spectrometer set forth in claim 1 wherein said light beam combiner includes a third refractive surface substantially perpendicular to said first refractive surface and a fourth refractive surface parallel to said third refractive surface, said third refractive surface and said fourth refractive surface refracting light from said light sources into said primary beam.
Claim 4
Dependent Claim
36 words
The optical transmission spectrometer set forth in claim 2 wherein each of said first refractive surface, said second refractive surface, said third refractive surface and said fourth refractive surface includes an angle of incidence of 45°.
Claim 5
Dependent Claim
49 words
The optical transmission spectrometer set forth in claim 1 further comprising a second collimating device mounted between said detection assembly and said mounting assembly for baffling stray light passing from a sample, and defining the detector viewing area to that of the primary beam passing through the sample area.
Claim 6
Dependent Claim
60 words
The optical transmission spectrometer set forth in claim 1 wherein the amount a beam of light is displaced upon passing through said beam-combiner can be calculated using the formula ##EQU2## where d is the amount of displacement, t is the thickness of the beam-combiner, N is the index of refraction of the beam-combiner and θ is the angle of incidence.
Claim 7
Dependent Claim
23 words
The optical transmission spectrometer set forth in claim 1 wherein said plurality of light sources includes two light emitting diodes of different wavelengths.
Claim 8
Dependent Claim
30 words
The optical transmission spectrometer set forth in claim 1 wherein said first collimating device is an internally threaded tube wherein threads on the interior of the tube baffle stray light.