Trinocular Compound Microscope | Phase-Contrast

AmScope T690 Series Trinocular Compound Microscope 40X-2500X Magnification with 20W Halogen Kohler Illumination Infinity-Corrected Plan Phase-Contrast, Turret Condenser, 3D mechanical Stage

Key Features

 

The infinity-corrected optical system reduces distortion and improves color accuracy.

Plan-achromatic lenses produce high-contrast images with edge-to-edge sharpness.

The Koehler illumination system provides centered, evenly-distributed lighting with a field aperture for maximum contrast and definition.

The adjustable trinocular photo port allows you to easily mount a camera for real-time monitoring or capturing photos and videos.

Includes a phase-contrast kit for live-cell studies. The kit includes 4 plan-achromatic phase-ring equipped objective lenses and a turret condenser.

Description

This T690-PL trinocular microscope is upgraded with a turret phase-contrast system for live-cell analysis among other things. Designed for professional biological applications, the microscope's infinity-corrected optical system ensures reliable, low-distortion magnification, with plan-achromatic corrections for accurate colors, excellent field flatness and edge-to-edge sharpness. The halogen illumination system provides low-fatigue, evenly-distributed light for maximum contrast and definition. This model is a popular choice for veterinarians and university laboratories.

 

The trinocular head accommodates viewing through eyepieces and through the top-mounted photo port. The binocular viewing tubes use Siedentopf adjustment to easily fit any user. The head has a top-mounted, height-adjustable 23mm photo port for mounting optional cameras. C-mount cameras can be paired with various reduction lenses for mounting to the port and optimizing field-of-view.

 

The objective turret provides instant access to 4 magnification levels to easily focus in on minute details from 40X to 1000X. Additional 25X eyepieces expand the maximum magnification to 2500X with 6 unique levels. This covers magnifications needed for studying hair follicles, cells, soil, and bacteria. The turret's reversed orientation provides more working room above the stage. These high-quality lenses are achromatically corrected to improve resolution and color accuracy, with planatic flat-field correction to provide edge-to-edge sharpness.

 

The large 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.

 

Built on Koehler illumination principals, the sub-stage lighting provides evenly-distributed light for optimal contrast. The halogen light-source provides bright illumination with a lower color-temperature for decreased fatigue when used for long periods. 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 height adjustment for precision control, and is centerable for proper alignment. The illuminator's field lens provides an iris diaphragm to control light-spread, optimizing contrast and definition in specimen features.

 

A phase-contrast kit is included with a turret condenser and 4 plan-achromatic phase-contrast objective lenses. Phase contrast is used to reveal detail in indistinct objects, such as unstained cells and microorganisms that would otherwise appear invisible. By using a combination of specialized objective lenses and a modified light condenser, these invisible objects can be visualized by manipulating variations in phase. This turret condenser allows you to easily rotate through the four phase-contrast settings (4X, 10X, 40X, 100X). Each phase-contrast setting has a centerable annulus for proper alignment. Each of the phase-ring equipped objective lenses has plan-achromatic corrections for improved color and resolution, as well as edge-to-edge sharpness.

 

Specifications

Optical System Infinite-conjugate

Head Trinocular, 30° incline, 360° rotatable

Interpupillary Adjustment Siedentopf compensation-free gemel, 55-75mm

Ocular Diameter 30mm

Ocular Diopters left ocular

Eyepieces 10X, 25X

Photo Port height-adjustable 23mm tube

Objective Lenses Infinity-corrected

Objective Parfocal Distance 45mm

Objective Mounting Thread RMS 20.32mm

Objective Turret Reverse quadruple, ball-bearing movement

Focusing System Coaxial coarse and fine focus, tension control

Division of Fine Focus 0.002mm

Stage Design Double-layer with caliper

Stage Dimensions 180mm x 150mm

X-Y Translation Range 75mm x 50mm

Transmitted Illumination 12V/20W halogen

Condenser NA1.25 Abbe condenser with iris diaphragm

NA1.25 phase-contrast turret

Sub-stage Condenser-holder rack and pinion

Power 85-230VAC 50/60Hz wide-band

Objective Lenses

Magnification Corrections NA Immersion Medium Cover-glass Thickness

4X plan-achromatic 0.10 — 0.17mm

10X plan-achromatic 0.25 — 0.17mm

40X plan-achromatic 0.65 — 0.17mm

100X plan-achromatic 1.25 oil 0.17mm

4X Plan-achromatic

Phase contrast 0.10 — 0.17mm

10X Plan-achromatic

Phase contrast 0.25 — 0.17mm

40X Plan-achromatic

Phase contrast 0.65 — 0.17mm

100X Plan-achromatic

Phase contrast 1.25 oil 0.17mm

 

Packing List:

One trinocular head

One microscope body

Four objective lenses: 4X, 10X, 40X, 100X

One pair 10X eyepieces

One pair 25X eyepieces

One phase contrast kit:

-- Four phase-contrast objective lenses: 4X, 10X, 40X, 100X

-- One turret condenser

-- One centering eyepiece

-- One color filter

-- One aluminum case

Three color filters

One spare halogen bulb

One spare fuse

One power cord (US and Canada standard)

One dust cover

One sample immersion oil