Viridian Microscopes

Sequoia Advanced BioImaging Research Microscope

High resolution imaging is the key design principle that the Sequoia biological research microscope was built around and every aspect of its construction flows into this principle. The uncompromising optical light path is combined with high numerical aperture objectives on a rugged, all-metal frame that minimizes vibrations. Thanks to this optimized design, the Sequoia delivers the highest resolution without making sacrifices for speed or sensitivity when capturing images.

Select a camera to match your application: from cooled CCD cameras for low-light fluorescence to state-of-the-art CMOS cameras for the best combination of sensitivity and resolution. Combine this with powerful LED-based light sources for flourescence or transmitted light and observe as your specimens reveal structures you have never before seen.

Optical System Infinity Color Corrected Optical System
Viewing Head 30° Inclined gemel binocular viewing head (inverted image). Interpupillary distance adjustment from 50mm – 76mm.
30° Inclined gemel trinocular viewing head (inverted image). Interpupillary distance adjustment from 50mm – 76mm. Beam splitting ratio of 100:0, 20:80, or 0:100.
Eyepieces High eyepoint, widefield plan PL10x, diopter adjustable eyepiece, FN22. Accepts 24mm diameter reticle.
Objectives Plan Semi Apochromat Fluor 4x, NA 0.13, WD 16.43, cover glass thickness 0.17mm
Plan Semi Apochromat Fluor 10x, NA 0.30, WD 8.13, cover glass thickness 0.17mm
Plan Semi Apochromat Fluor 20x, NA 0.50, WD 2.03, cover glass thickness 0.17mm
Plan Semi Apochromat Fluor 40x, NA 0.75, WD 0.74, cover glass thickness 0.17mm, spring loaded
Plan Semi Apochromat Fluor 10x, NA 1.28, WD 0.18, cover glass thickness 0.17mm, spring loaded, oil immersion
Nosepiece Inclined sextuple nosepiece with DIC slot.
Frame Biological transmitted light frame, low-position coaxial coarse and fine focusing adjustment. Coarse adjustment distance 25mm, fine precision adjustment 0.001mm. Coarse adjustment stop and tightness adjustment. Built-in 100~240V AC50/60Hz wide voltage transformer, light intensity adjustable by digital set and reset. Built-in transmitted filters LBD/ND6/ND25.
Fluoescence transmitted light frame, low-position coaxial coarse and fine focusing adjustment. Coarse adjustment distance 25mm, fine precision adjustment 0.001mm. Coarse adjustment stop and tightness adjustment. Built-in 100~240V AC50/60Hz wide voltage transformer, light intensity adjustable by digital set and reset. Built-in transmitted filters LBD/ND6/ND25.
Stage 4″ Double layer mechanical stage with glass plate for transmitted illumination. Size: 187mm x 168mm. Moving range: 80mm x 55mm,. Precision: 0.1mm. Two-way linear drive, tension adjustable.
Condenser Swing-out Achromatic Condenser NA 0.9
Lamp House 12v, 100w Halogen lamp house for transmitted light, center pre-set and intensity adjustable.
Reflected Fluorescence Illumination Metal Halide Illuminator standard. LED options available, see Accessories Tab.
Viridian RB50 microscope dimensions

Viridian Sequoia BioImaging Research Microscope Dimensions (mm)

  • Base Depth = 487mm
  • Total Depth = 603mm
  • Total Height = 442mm
  • Head Width = 185mm
  • Total Width = 269mm

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