Optika B-293LD1.50 Trinocular LED Fluorescence Microscope


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Fluorescence binocular and trinocular microscopes especially designed for tubercolosis and malaria analysis.

Delivery & Availability:
Typically 21 working days – excluding furniture and heavy/bulky equipment. Please contact us for further information.

Brands:: Optika


Fluorescence binocular and trinocular microscopes especially designed for tubercolosis and malaria analysis.


  • Observation mode: Brightfield.
  • Head: Trinocular, 360° rotating and 30° inclined. Interpupillary distance 48-75mm.
  • Dioptric adjustement: On the left eyepiece tube.
  • Eyepieces: WF10x/20 mm, high eye-point and secured by a screw.
  • Nosepiece: Quadruple revolving nosepiece, rotation on ball bearings.
  • Objectives:
    Equipped with binocular head and following objectives:
    IOS N-PLAN 10x/0.25 (Cover/No Cover), with anti-fungus treatment
    IOS N-PLAN 20x/0.40 (Cover/No Cover), with anti-fungus treatment
    IOS N-PLAN 40x/0.65 (Cover/No Cover), with anti-fungus treatment
    IOS W-PLAN MET 50x/0.75 (No Cover), with anti-fungus treatment
  • Specimen stage: Double layer rackless mechanical sliding stage, 150×139 mm, 75×33 mm X-Y movement range. Vernier scale on the two axes, accuracy: 0.1 mm.
  • Focusing: Coaxial coarse and fine focusing mechanism with limit stop to prevent the contact between objective and specimen. Adjustable tension of coarse focusing knob.
  • Condenser: Abbe N.A. 1.25, with objective-coded iris diaphragm, focusable and centerable.
  • Brightfield Illumination (Fixed Koehler type): X-LED3 with white 3.6 W LED (6,300 K) and light intensity control. Multi-plug 100-240Vac/6Vdc external power supply.
  • Fluorescence Illumination: Extra efficiency LED, with light intensity control. Peak wavelength: 465 nm, Power: 3.6W.
  • Epi Fluorescence Attachment: Slider with 3 positions (2 fluorescence, 1 brightfield), with 1 included filterset: Fluorescence B: EX 460-490, DM 505, EM 515LP: Acridine Yellow, Acridine Orange, Auramine, DiO, DTAF, FITC, GFP, YFP, etc.


Technical Specifications:

Observation Method –

Transmitted Light

Brightfield Yes
  Phase contrast (Positive type) As optional
  Darkfield As optional
  Simple polarized light As optional
Observation Method –

Incident Light

Fluorescence Yes
Main Body Type Upright
  Construction material Aluminum die-cast
  Trasportation handle Yes
Head Type Trinocular (Siedentopf)
  Split ratio 50/50
  Inclination 30°
  360° rotating Yes
  Interpupillary distance (mm) 48-75
  Dioptric adjustement On left tube
  Fixing screw for eyepieces Yes
  Tube inner diameter (mm) 23
Eyepieces Field number (mm) 20
  Magnification 10x
  Pointer As optional
  Micrometric scale As optional
  Diameter of micrometer glass (mm) 21
  High eyepoint (for glass wearers) Yes
  Rubber cup Yes
Nosepiece Positions Quadruple
  Bi-directional Yes
  Rotation on ball bearings Yes
  Objective thread RMS
Objectives Optical system
  Anti-fungus treatment Yes
  Parfocal distance (mm) 45
  Standard magnifications 40x-400x
  Type IOS
  Objectives included OS N-PLAN

10x/0.25, W.D. 5.8 mm


20x/0.40, W.D. 5.1 mm


40x/0.65, W.D. 0.43 mm


50x/0.75, W.D. 0.32 mm

Stage Type Double layer
  Dimensions (mm) 150×139
  Moving mechanism Rackless
  Moving range (mm) 75×33
  Material Anti-scratch painting
  Specimen holder Yes
  Slide number 1
  X-Y Vernier scale Yes
  Vernier scale accuracy (mm) 0.1
Condenser – Single


Type Abbe
  Removable Yes
  Numerical aperture (N.A.) 1.25
  Magnification scale for simplified positioning Yes
  Diaphragms Iris
  Centrable Yes
  Focusable By rack and pinion
Focusing System Type Coaxial coarse & fine
  Coarse total travel (mm) 18
  Fine total travel (per single rotation) (mm) 0.4
  Fine graduations 100
  Fine resolution (µm) 4
  Upper stop to prevent contact Yes
  Adjustable tension Yes


Kohler illumination Fixed
  Type X-LED
  X-LED type X-LED3
  Light source power (W) 3.6
  Brightness control Manual
  Lifetime (hours) > 65,000
  Temperature (K) 6,300
  Max. required power (W) 6
Power Supply for



Type External
  Microscope connector Jack, 2.1 mm
  Power plug type Multi-plug (EU, UK, US)
  Input voltage 100/240 Vac, 50/60 Hz
  Output voltage 6 Vdc  2.5A
Accessories Included Dust cover Yes
  Immersion oil (10ml) Yes
  Tension adjustment tool Yes
  User Manual Digital version (downloadable)
Additional Information Mirror for transmitted light (as optional).

External rechargeable battery pack (as optional)

Product Weight Height (mm) 515
  Width (mm) 235
  Depth (mm) 340
Product Weight (kg) 7.5


Number of positions 3
  Blue filter set (included) specs Excitation: 460 – 490 nm; Dichroic: 505 nm;

Emission: 515LP nm

  Filter dimensions Excitation: 18 mm diam.;

Dichroic: 26.5 mm x 19 mm;

Emission: 18 mm diam.

  Filter set selection Manual
Fluorescence Light


Light source Blue LED
  Watt (W) 3.6
  LED wavelength Blue LED: 465 nm
  Lifetime (hours) > 65,000
  Brightness control Yes


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