AmScope B580-DK B580 Series Simul-Focal Darkfield Biological Binocular Compound Microscope with 20W Halogen and Optional Digital Camera

This is an upgraded B580 with both brightfield and darkfield lighting. An ideal choice for veterinarians, breeders, and clinics, this instrument has proven reliability and optical quality. It boasts features such as a compensation-free Siedentopf head, smooth stage translation, and a precision focus system with easy tension-adjustment and vertical-lock. The magnification range can be expanded with a large selection of objective and ocular lenses. Additionally, the included darkfield condenser allows for darkfield illumination when working with blood or other fluids, and live cells.

To customize the microscope to your viewing comfort, the eyepiece spacing can be easily adjusted using a precision Siedentopf mechanism. A diopter is available on the both ocular tubes to compensate for asymmetry, and the ocular tubes are angled at 30° to comfortably accommodate a seated position without neck strain. The 23mm photo port is height-adjustable to match focus with the eyepieces, and does not require any switching, allowing all three optical ports to be used simultaneously.

The objective turret provides instant access to 4 magnification levels to easily focus in on minute details from 40X to 1000X. This covers magnifications needed for studying hair follicles, cells, and bacteria. These high-quality lenses are achromatically corrected to improve resolution and color accuracy.

The 2-layer mechanical stage provides smooth and precise movement for examination of specimen slides. The stage's low-position controls are conveniently placed near the coaxial focus knobs for a streamlined workflow. Examining specimen slides is intuitive and precise for users at any skill level. Halogen sub-stage lighting provides bright illumination with excellent color rendering. The warm lighting is better suited for prolonged use, causing less eyestrain than LED and fluorescent lighting. The Abbe light condenser has a high 1.25 numerical aperture for oil-immersion, and an iris diaphragm to optimize contrast and depth-of-field. The condenser holder uses rack-and-pinion movement for precise height adjustment.

Darkfield

A dry darkfield condenser is included for darkfield observation using the 40X objective lens or lower. Darkfield observation will provide contrast in otherwise indistinguishable objects by highlighting changes in refractive index. This is particularly useful for observing live cells including blood analysis. With a 0.9 numerical aperture, the condenser works with non-immersion lenses. Two centering screws allow you to properly center the condenser for optimal contrast.

Specifications

Technical drawings with measurements (in mm, binocular model shown)

Optical System	Finite-conjugate
Mechanical Tube Length	160mm
Head	Binocular, 30° incline, 360° rotatable
Interpupillary Adjustment	55-75mm Siedentopf compensation-free gemel
Ocular Diameter	23mm
Eyepieces	10X
Objective Lenses	DIN standard
Objective Parfocal Distance	45mm
Objective Mounting Thread	RMS 20.32mm
Objective Turret	quadruple
Focusing System	Coaxial coarse and fine focus, upper limit-stop, tension control
Focus Range	28mm
Division of Fine Focus	0.002mm
Stage Design	Double-layer with caliper
Stage Dimensions	140mm x 132mm
X-Y Translation Range	76mm x 50mm
Transmitted Illumination	20W halogen
Condenser	NA1.25 Abbe condenser with iris diaphragm, 32mm filter holder NA0.7-0.9 dry darkfield condenser with centering knobs
Sub-stage Condenser-holder	rack and pinion
Power	85-265VAC 50/60Hz wide-band

Objective Lenses

Magnification	Corrections	NA	Immersion Medium	Cover-glass Thickness
4X	achromatic	0.10	—	0.17mm
10X	achromatic	0.25	—	0.17mm
40X	achromatic	0.65	—	0.17mm
100X	achromatic	1.25	oil	0.17mm

Packing List: