Optics: measuring and testing – Refraction testing – Prism engaging specimen
Patent
1975-10-07
1977-06-14
Evans, F. L.
Optics: measuring and testing
Refraction testing
Prism engaging specimen
350271, G01J 302
Patent
active
040294170
ABSTRACT:
A reading device for a monochromator having an outlet slit of adjustable width and a light dispersing element which is adjustable in relation to the outlet slit to shift the spectrum in relation to the outlet slit, the reading device comprising a scale which is displaceable in relation to the adjustment of the light dispersing element with respect to the outlet slit and a transparent plate slidably mounted above the scale for movement in a direction perpendicular thereto. A sliding mechanism for adjusting the width of the outlet slit is connected to the plate through a suitable linkage such that the plate follows the movement of the adjustment of the width of the outlet slit. A system of pairs of curved lines are formed on the plate and the lines have curvatures such that at a determined position of the light dispersion element and a determined width of the slit they intersect the scale at points characterizing a monochromator spectrum transmittance curve. A light dividing element is disposed above the plate to receive an image thereof and to pass the same successively through a lens and a mask to a photo-detector.
REFERENCES:
patent: 2669899 (1954-02-01), Macleish
patent: 3610758 (1971-10-01), Lu
Evans F. L.
Polska Akademia Nauk, Instytut Chemii Fizycznej
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