- 11 -4. Technical Specifications MT-40 Series4-1 MT-40 Series Biological Microscope Technical Parameters4-2 Parameters of objectiveOptical system UIS (universal infinity-corrected optical system)Head Binocular head of Gemel type, 30° inclinedEyepiece PL10X18T diopter adjustable eyepiece, 18mm line field of viewNosepiece Reversed quadruple nosepieceObjective Infinity Plan achromatic objective(4X, 10X, 40X, 100X)FocusingsystemCoaxial coarse& fine focusing system, with limit-stopper& tension adjustable.Travel rang: 25mm. Fine focusing precision: 0.002mmStage Rectangle built in low position coaxial mechanical stage, single slide clip, area140x132mm, moving range 76x50mmCondenser Built-in Koehler illuminator systems, Pre-centered.Iris diaphragm Koehler illuminator condenser and mirror optional.Illuminator 100~240V wide voltage., output single 3W LED light, continuous adjustment ofbrightness.OperationEnvironment● Use indoor● Altitude: max. 2000m● Environment temperature: 5℃-40℃(41ºF-109ºF)● Max. relative humidity: 80% at 31℃(88ºF), and then declined linearly. 70% at34℃(93ºF), 60% at 37℃(99ºF), 50% at 40℃(104ºF).● Degree of pollution: 2 ( refer to IEC664)Type MagnificationNumericalaperture(N.A.)Conjugatedistance(mm)Parfocaldistance(mm)Thickness ofthe cover slipMagnificationmarket(color ring)4X 0.10 ∞ 45 0.17 Red10X 0.25 ∞ 45 0.17 Yellow40X(S) 0.65 ∞ 45 0.17 Light BlueInfinity Planachromaticobjective100X(S)oil 1.25 ∞ 45 0.17 White