Biological Microscope LB-57BIM Catalog

Biological Microscope LB-57BIM features an infinite optical system and 4× to 100× plan achromatic objectives for clear, high-resolution imaging. It is equipped with a trinocular Seidentopf head with 50:50 light split for simultaneous viewing and image capture. The microscope provides smooth coaxial coarse and fine focusing for precise specimen adjustment. It is camera-ready with uniform, glare-free illumination for reliable laboratory observation.

Optical System	Infinite Optical System
Viewing Head	Seidentopf trinocular head, 30° inclined
Head Rotation	360° rotatable
Interpupillary Distance	48 mm to 75 mm
Light Split Ratio	100:0 / 50:50 (Eyepiece: Trinocular tube)
Eyepiece Tube Diameter	Ø30 mm
Eyepiece	Wide field WF 10× / 22 mm with diopter adjustment
Objective Type	Infinite Plan Achromatic Objectives (Standard)
Objective Magnifications	4×, 10×, 40× (Spring), 100× (Spring, Oil)
Nosepiece	Backward quadruple nosepiece
Stage Type	Rackless double-layer mechanical stage
Stage Size	140 mm × 140 mm
Moving Range	75 mm × 50 mm
Condenser	Sliding-in, centerable Abbe condenser
Numerical Aperture	NA 1.25
Iris Diaphragm	Yes
Focusing System	Coaxial coarse & fine focusing
Fine Focus Division	0.002 mm
Coarse Stroke	37.7 mm per rotation
Fine Stroke	0.2 mm per rotation
Focusing Moving Range	20 mm
Illumination	6 V / 20 W Halogen lamp, brightness adjustable
Camera Interface	Trinocular port with C-mount adapters
Power Supply	AC 220 V / 110 V, 50/60 Hz
Dimensions (L × W × H)	Approx. 350 × 355 × 555 mm
Net Weight	12 kg

High-definition image clarity

Infinite optical system

Comfortable trinocular viewing design

Uniform, glare-free illumination

Ergonomic and user-friendly operation

Köhler illumination 

20X Eyepiece

Biological Microscope LB-57BIM is used for routine biological, pathology, and microbiology observations in laboratories. It is used in educational and research institutions for teaching, training, and image documentation.