8:1 Zoom Microscope TZM0756 Introduction.
We introduce the Zoom Microscope developed by Touptek Photonics.
The TZM0756 mono zoom microscope offers exceptional performance at an affordable price.
By combining various auxiliary lenses, it supports a wide optical magnification range of 0.18X – 22.4X,
with a field of view (F.O.V) from 31.4 mm to 0.99 mm and a working distance (W.D) ranging from 38 mm to 160 mm.
The TZM0756 mono zoom microscope, as shown in Figure 1 below, is composed of an auxiliary lens module,
an intermediate zoom module, and a TV lens module, all based on dual parallel optical paths.
Figure 1
As shown in the figure, an auxiliary lens is positioned on the left (objective side).
The collimated light generated after passing through the intermediate zoom module travels through the TV lens module and reaches the image sensor,
where the final image is formed.
By combining various auxiliary lenses and TV lenses, a wide range of magnifications can be achieved.
The TZM0756 adopts a semi-apochromatic parallel optical imaging system and employs multi-layer coating technology to achieve perfect correction of peripheral image distortion, delivering high resolution and high-contrast images.
| Feature |
Basic zoom range 0.7X ~ 5.6X, zoom ratio 8X
NA 0.018–0.092 (when using 1X auxiliary lens)
High resolution 18.6 μm–3.65 μm (when using 1X auxiliary lens)
Wide field of view 0.99 mm–31.74 mm (object plane)
Sensor size support 2/3” (when using 1X TV lens)
Working distance 37.5 mm–160 mm
Parfocal support within zoom range
Compact size 150 mm (length) × 40 mm (diameter)
Auxiliary lenses 0.50X, 0.75X, 1.00X, 1.50X, and 2.00X (optional)
TV lenses 0.50X, 0.75X, 1.00X, 1.50X, and 2.00X (optional)
Bracket adapter 45 mm or 50 mm (optional)
Drawing.
Model without illumination module ring light module attached coaxial light module attached
The length of the TZM0756 is 150.3 mm, which is shorter than most commercially available zoom lenses.
The working distance of the TZM0756 decreases as the magnification of the auxiliary lens increases, while the object NA and zoom range increase as the magnification of the auxiliary lens increases.
Therefore, the auxiliary lens can be selected according to the required working distance or zoom range.
(The actual zoom range is also determined by the auxiliary lens.)
The purpose of selecting TV lenses with different magnifications is to match the size of the camera sensor.
As shown in the “Zoom Range” column of the table, when the magnification of the TV lens increases, the system’s zoom range increases in the same ratio, but it has little effect on the optical resolution.
To reduce cost, a smaller camera, such as a 1/3" type, can also be selected.
Of course, a camera equipped with a larger sensor can be selected to improve the signal-to-noise ratio and overall image quality.
Here, a “larger sensor” refers to a sensor specification that provides higher dynamic range and a better signal-to-noise ratio.
System Configuration Diagram
