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The 12X Zoom system body tube contains the core zoom mechanism and determines the mechanical nature of your zoom system. Body Tubes may be zoom or non-zoom configurations. Options include:
Manual Zoom Modules: Designed to offer flexibility in a variety of imaging applications when an automated system is not necessary. Manual adjustment of the zoom and focus allow the user to change the field of view and regain focus when the sample they are imaging changes size.
Apertures: The aperture function allows the user to adjust the amount of light that flows through the system without adjusting light source intensity. The aperture also can improve depth of field when it is adjusted properly.
Detents: Obtain specific "stops" throughout the zoom range by selecting a body tube with Detents. Typically used in measuring systems where each position may be calibrated. Pre-set stops are located at 1X, 2X, 3X and 4X on the zoom scale.
Fine Focus: For applications without separate moving support systems, the Fine Focus body tubes offer focus over a 3 mm (coaxial models only) or a 12 mm (non-coaxial models) Fine Focus axial distance at the object. Available in manual and motorized versions.
Motorized Drive: Automated, motorized control of the zoom and fine focus can be requested. Accurate and repeatable positions can be achieved. Several configurations exist to allow you to flexible options.
Coaxial Illumination: Coaxial / on axis illumination is most effective when imaging flat specular surfaces. By integrating the coaxial illumination port, a collimated, diffuse and uniform illumination source is integrated into a zoom lens.
Specifications:
12X Zoom
Combinations
(Lens Attach. +
Prime Lens +
Adapter Tube) |
W.D. |
System Mag. |
N.A.
-obj- |
Feature Size
(microns) |
Pixel Size (microns) |
Depth of Field
(mm) |
Low
Mag |
High
Mag |
Low
Mag |
High
Mag |
Low
Mag |
High
Mag |
Low
Mag |
High
Mag |
Low
Mag |
High
Mag |
| 0.25x + 12X +
0.67x |
341 |
0.10 |
1.17 |
0.005 |
0.025 |
33.33 |
6.67 |
3.33 |
7.80 |
20.00 |
0.80 |
| 0.25x + 12X +
1.0x |
341 |
0.15 |
1.75 |
0.005 |
0.025 |
33.33 |
6.67 |
5.00 |
11.67 |
20.00 |
0.80 |
| 0.25x + 12X +
2.0x |
341 |
0.29 |
3.50 |
0.005 |
0.025 |
33.33 |
6.67 |
9.67 |
23.34 |
20.00 |
0.80 |
| 0.5x + 12X +
0.67x |
165 |
0.19 |
2.35 |
0.009 |
0.051 |
18.52 |
3.33 |
3.60 |
7.68 |
6.17 |
0.19 |
| 0.5x + 12X +
1.0x |
165 |
0.29 |
3.50 |
0.009 |
0.051 |
18.52 |
3.33 |
5.38 |
11.45 |
6.17 |
0.19 |
| 0.5x + 12X +
2.0x |
165 |
0.58 |
7.00 |
0.009 |
0.051 |
18.52 |
3.33 |
10.74 |
22.89 |
6.17 |
0.19 |
| 0.75x + 12X +
0.67x |
108 |
0.29 |
3.52 |
0.014 |
0.076 |
11.90 |
2.22 |
3.45 |
7.73 |
2.55 |
0.09 |
| 0.75x + 12X +
1.0x |
108 |
0.44 |
5.25 |
0.014 |
0.076 |
11.90 |
2.22 |
5.24 |
11.52 |
2.55 |
0.09 |
| 0.75x + 12X +
2.0x |
108 |
0.87 |
10.50 |
0.014 |
0.076 |
11.90 |
2.22 |
10.35 |
23.05 |
2.55 |
0.09 |
| None + 12X +
0.67x |
86 |
0.39 |
4.69 |
0.019 |
0.101 |
9.26 |
1.67 |
3.42 |
7.74 |
1.39 |
0.05 |
| None + 12X +
1.0x |
86 |
0.58 |
7.00 |
0.019 |
0.101 |
9.26 |
1.67 |
5.09 |
11.55 |
1.39 |
0.05 |
| None + 12X +
2.0x |
86 |
1.16 |
14.00 |
0.019 |
0.101 |
9.26 |
1.67 |
10.17 |
23.10 |
1.39 |
0.05 |
| 1.5x + 12X +
0.67x |
50 |
0.58 |
7.04 |
0.028 |
0.151 |
6.17 |
1.12 |
3.45 |
7.78 |
0.64 |
0.02 |
| 1.5x + 12X +
1.0x |
50 |
0.87 |
10.50 |
0.028 |
0.151 |
6.17 |
1.12 |
5.18 |
11.60 |
0.64 |
0.02 |
| 1.5x + 12X +
2.0x |
50 |
1.74 |
21.00 |
0.025 |
0.151 |
6.17 |
1.12 |
10.74 |
23.34 |
0.64 |
0.02 |
| 2.0x + 12X +
0.67x |
32 |
0.78 |
9.38 |
0.038 |
0.202 |
4.50 |
0.83 |
3.42 |
7.79 |
0.35 |
0.01 |
| 2.0x + 12X +
1.0x |
32 |
1.16 |
14.00 |
0.038 |
0.202 |
4.50 |
0.83 |
5.07 |
11.62 |
0.35 |
0.01 |
| 2.0x + 12X +
2.0x |
32 |
2.32 |
28.00 |
0.038 |
0.202 |
4.50 |
0.83 |
10.17 |
23.34 |
0.35 |
0.01 |
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Assumptions:
1. Minimum resolvable feature size is half of the
threshold line pair limit. Calculation = 1(3000 x Lens N.A.)
2. Matching pixel size is that which will permit the minimum feature
size to overlap two pixels. Calculation = 1/2(Feature Size x System
Magnification)
3. If the matching pixel size is greater than the camera pixel size, the
system is "lens limited."
4. If the matching pixel size is less than the camera pixel size, the
system is "camera limited."
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Additional Resources:
For further information, please see Navitar's 12X Zoom
Brochure (PDF). You may also view the 12X Zoom Dimensions (PDF) as well as the 12X Zoom System Diagram (PDF) for additional resources. Other specialty orders, such as custom zoom lenses, as well as various types of illumination, among other accessories, are available. Please contact us by phone or e-mail if you have any inquiries.
| Available Options Below. Call us or e-mail us for custom options. |
| Adapter Tubes: |
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| Aperture Designation: |
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| Coax Illumination Options for Motorized Zoom Lenses: |
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| Control Options for Motorized Zoom Lenses: |
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| Couplers: |
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| Detents Designation: |
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| Fiber Inputs for Motorized Zoom Lenses: |
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| Fiber Optic Illumination: |
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| Infinity Corrected Objectives: |
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| LED Illumination: |
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| Lens Attachments: |
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| Macro Zoom Lenses: |
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| Manual Zoom Lenses: |
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| Microscope Converter Plates & Motorized Mounts: |
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| Motorized 12X UltraZoom Options: |
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| Motorized 12X Zoom Options: |
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| Motorized 6X UltraZoom Options: |
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| Motorized 6X Zoom Options: |
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| Non-Zoom Couplers for Infinity Corrected Objectives: |
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| Polarizers: |
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| Reticle Projector: |
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| Specialty/Custom Adapters: |
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| Stands: |
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| UltraZooms for Use with Infinity Corrected Objectives: |
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