Joy Analytical

UV-Vis

UV-Vis Double Beam Spectrophotometer — Optics Animation

UV-Vis Double Beam Spectrophotometer — Optical Path

Source → Monochromator → Rotating Sector Mirror (chopper) → Sample / Reference → Detectors → Recorder

D₂ Lamp (UV) W Lamp (Vis) source mirror entrance slit collimating mirror Diffraction grating (rotates to scan wavelength) exit slit Rotating sector mirror (beam chopper / splitter) Sample cell Reference cell detector detector Amplifier / ratio comparator Sources Entrance optics Monochromator Beam splitting Detection Signal processing
UV beam (D₂ lamp) Visible beam (W lamp) Sample-path beam Reference-path beam Recorded absorbance trace
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