The Am T490A-DK 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 and Darkfield 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. 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 (BF/DF) 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.
The dry darkfield condenser has a 0.7-0.8 NA. 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 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/DarkfieldPower110V
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?
------------------
* Am T490A-DK 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
* Dry darkfield condenser, 0.7-0.8 NA
* Immersion oil, one bottle
* (3) Color filters; blue, green, and yellow
* Spare halogen bulb
* Spare fuse
* Dust cover
* Power cord
* Instructions
- 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 that provide color correction of magnified images.
- Brightfield/Darkfield, 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.