- Trinocular compound micro provides high magnification for biological use and educational applications.
- Trinocular viewing head with vertical camera and binocular with interchangeable pairs of 10x widefield and 16x widefield eyepieces and Siedentopf binocular head with 55 to 75mm interpupillary adjustment, fixed 30-degree vertical inclination to reduce eye and neck strain, and 360-degree rotation capability to provide a more comprehensive view and enable sharing.
- Forward-facing nosepiece with 4x, 10x, 40xS (spring), and 100xS (spring, oil) DIN achromatic precision-ground optical-glass objectives, and 10x, 20x, 40x, and 100x phase-contrast plan objectives with phase-contrast turret.
- Brightfield/Darkfield/Phase-contrast, halogen illumination with rheostat to control light intensity, and 1.25 NA Abbe condenser with iris diaphragm and rack-and-pinion focus control for precise focus, clear examination, and light control.
- Double-layer mechanical stage with 1mm stage divisions and stage stop; graduated coarse and fine focus with tension control to prevent stage drift.
The Am T490A-PCT compound trinocular micro has a
sliding head, interchangeable pairs of 10x widefield and 16x
widefield eyepieces, a forward-facing nosepiece with four DIN
achromatic objectives, Brightfield/Darkfield/phase-contrast
halogen illumination, and a double-layer mechanical stage with a
stage stop to protect slides and objectives from damage. The
trinocular viewing head has a vertical camera and a
compensation-free binocular viewing head with interchangeable
pairs of WF10x and WF16x eyepieces and sliding head to adjust
inter-pupillary distance, a fixed 30-degree vertical inclination
to reduce eye and neck strain, and a 360-degree rotation
capability to provide a more comprehensive view and enable
sharing. A Siedentopf binocular head enables the viewer to change
the interpupillary distance without changing the tube length,
eliminating the need to re-focus the image. It has an
interpupillary range of 55 to 75mm to accommodate individual eye
differences, and bi-lateral dioptric adjustment accommodates
individual eye-strength differences. The vertical trinocular port
accepts a camera with a 23mm or C- adapter (camera sold
separately). The forward-facing nosepiece has 4x, 10x, 40xS
(spring), and 100xS (spring, oil) DIN achromatic optical-glass
objectives that combine with the eyepieces to provide color
correction of magnified images. The 40xS objective is spring
loaded to prevent slide damage when focusing. The 100xS
spring-loaded oil-immersion objective uses oil between the
specimen and the objective lens to provide increased resolution
over a standard objective. Four phase-contrast objectives (PH10x,
PH20x, PH40x, and PH100x) combine with the eyepieces to provide
phase contrast at eight magnifications. Plan objectives provide
improved focus over the entire range of the viewing field. The
objectives are ed on a turret to ease magnification changes.
A compound micro is used for inspection and dissection of
specimens when two-dimensional images are desired.
The micro has lower (transmitted, diascopic) Brightfield,
Darkfield, and phase-contrast illumination that transmits light
up through the specimen for enhanced visibility of translucent
and transparent objects. Brightfield (BF) illumination allows the
specimen to absorb light, resulting in a dark image on a light
background, and Darkfield (DF) illumination reflects light off
the specimen, resulting in a light image on a dark background.
Phase-contrast provides high contrast and visibility without the
use of stains, allowing specimens to be observed in their natural
state without being killed or fixed. Halogen illumination
provides bright light in a concentrated path and has a rheostat
to control light intensity. The 1.25 NA Abbe condenser is ed
on a rack-and-pinion control system, can be adjusted to control
the distance of the light from the stage, and has an iris
diaphragm to optimize the a of light illuminating the
specimen. The 1.25 NA turret-type phase-contrast condenser has an
iris diaphragm and Brightfield, Darkfield, and phase 1, 2, 3, and
4 positions. The double-layer mechanical stage, with 1mm stage
divisions, locks the slide into place and provides precise slide
manipulation along the X- and Y-axis to allow coordinates to be
recorded, enabling the viewer to return to a specific location on
the slide. A stage stop prevents the stage from coming into
contact with the slide and objectives. The stage is 5-1/2 x 5-1/2
inches (140 x 140mm) and has a traveling range of 2-15/16 x 1-3/4
inches (75 x 45mm). Graduated coaxial coarse and fine focus has a
focusing range of 1-3/16" (30mm) and fine-focus divisions of
0.002mm (0.0000787") that enable measurements to be taken. Focus
knob tension control prevents the stage from drifting out of
focus. The solid-metal enamel-coated body is durable and
resistant to stains and corrosion.
SpecificationsHeadCompound
trinocularMagnification40x-1600xTrinocular port23mm or
C-EyepiecesWF10x, WF16xObjectives4X, 10x, 40xS, 100xS
(oil)StageDouble-layer mechanicalLighting
configurationTransmitted (lower)Condenser1.25 NA
AbbeDiaphragmIrisLight sourceHalogen with rheostat,
6V/20WIllumination
typeBrightfield/Darkfield/Phase-contrastPower110V
Micros are instruments used to enhance the resolution of an
object or image. Types include compound, stereo, or digital.
Compound micros use a compound optical system with an
objective lens and an eyepiece. Stereo micros show object
depth in a three-dimensional image. Digital micros are used
to display an image on a monitor, rather than looking through a
lens. Micros can have monocular (one), binocular (two), or
trinocular (three) eyepieces, with varying magnification
abilities. Magnification ability refers to the size of an image.
Resolution, also known as resolvant power, refers to the clarity
of the image. The interaction between field of view (FOV),
numerical aperture (NA), and working distance (WD) determines
resolution. Micros can control magnification through a fixed
focus, or through a range of adjustments. They can also utilize
LED, fluorescent, and mirror light sources to help control
viewing capabilities. Micros are widely used in education,
lab research, biology, metallurgy, engineering, chemistry,
manufacturing, and in the medical, forensic science, and
veterinary industries.
United manufactures microscopy equipment and accessories
under the brand name Am. The company, founded in 1996, is
headquartered in Irvine, CA.
What's in the Box?
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* Am T490A-PCT micro with double-layer mechanical stage
* WF10x eyepieces, 23mm, one pair
* WF16x eyepieces, 23mm, one pair
* 4x DIN achromatic objective, 20mm
* 10x DIN achromatic objective, 20mm
* 40xS DIN achromatic objective, 20mm
* 100xS (oil) DIN achromatic objective, 20mm
* Turret phase-contrast condenser, 1.25 NA
* CT Lens
* 10x plan objective
* 20x plan objective
* 40x plan objective
* 100x (oil) plan objective
* Immersion oil, one bottle
* (3) Color filters; blue, green, and yellow
* Spare halogen bulb
* Spare fuse
* Dust cover
* Power cord
* Instructions