产品名称：NAVITAR 12X Telecentric
产品型号：12X Telecentric
产品简单介绍：12Ｘ Telectrtice可依被測物之狀況及機械結構之
空間，角度結構等之設計，搭配直角角度縮小空
間長度的組合
产品详细介绍：
12X Telecentric Zoom
The World’s First Parfocal Telecentric Zoom LensThe 12X Telecentric Zoom system allows users to rhttp://www.cinv.cneach a true telecentric condition to within less than 0.3° while maintaining constant perspective and magnification. This means that even if the object is slightly out of focus, the size of the image will not change. The 12X Telecentric Zoom provides field coverage from 50 mm down to 4 mm and the coaxial illumination allows clear viewing, even when working with mirror-like surfaces.
Wide Magnification Range and Ultra Long Working DistanceIn the past, a telecentric lens was defined as having fixed magnification. Not anymore! The Navitar 12X Telecentric Zoom lens allows you to zoom in and focus over a wide variety of magnifications with a higher level of accuracy than you ever thought possible. The 12X Telecentric provides adjustable focal lengths over a 0.16X to 1.94X magnification range. You no longer have to be limited by telecentric lenses that only offer fixed magnification. Now you have field coverage from 50 mm down to 4 mm at a 188 mm working distance.
No Need to Change LensesThe easily adjustable field of view and magnification allow our Navitar 12X Telecentric lens to adjust to meet your exact requirements. It’s no longer necessary to change lenses, mix and match base lenses with attachment lenses or recalibrate. One lens, the 12X Telecentric, really does it all!
Wide Range of ApplicationsSpecifically designed for precise dimensional measurement of objects or pattern recognition, the 12X Telecentric Zoom has many applications. It’s ideal for measuring three-dimensional objects with deep features, such as precision parts and electrical connector pins and contacts. It’s also the perfect lens for viewing inconsistently placed parts on a conveyer belt.
12X Telecentric Accuracy . . . . . . . . . . . .
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Telecentric Advantages Over Conventional Lenses
Constant Perspective for the Highest Degree of AccuracyNavitar’s 12X Telecentric lens is designed for "straight on" viewing of objects across the entire field of view. Images are not distorted and features are easy to examine. Conventional lenses view objects at different angles across the field of view. This changes the viewing perspective and can distort the size and shape of the object, making it difficult to view features accurately.
Constant Magnification Reduces Magnification ErrorsMagnification in the Navitar 12X Telecentric, unlike conventional lenses, is independent of working distance. Magnification remains constant regardless of how close or far away an object is from the camera. This reduces magnifications errors and greatly extends gauging depths of field. Conventional lenses, however, view objects that are closer to the camera as larger than objects that are farther away.
12X Telecentric Lens Specifications
Magnification
Telecentric Error (degrees)
Object N.A.
Image N.A
Object Depth of Focus (mm)
Telecentric Error (mm)
Object Size
Approximate MTF (Ip/mm)
Resolvable Features (microns)
1/4" Format
1/3" Format
1/2" Format
0.16
0.05
0.06
-0.03
0.005
0.032
38.8
0.018
0.020
-0.009
25.0
37.3
49.7
15
33
0.23
-0.10
-0.09
-0.18
0.007
0.031
19.4
-0.017
-0.016
-0.030
17.4
26.1
34.8
22
23
0.33
-0.19
-0.27
0.010
0.030
10.3
-0.024
12.1
18.2
24.3
30
17
0.47
-0.23
-0.31
0.013
0.028
6.0
-0.012
8.5
12.8
17.0
39
13
0.67
-0.25
-0.34
0.016
0.024
3.8
-0.008
-0.011
5.9
8.9
11.9
49
10
0.96
-0.36
0.021
2.6
-0.006
4.2
6.3
8.4
59
8
1.36
-0.29
-0.38
0.017
1.8
-0.004
-0.005
2.9
4.4
71
7
1.94
-0.24
0.015
1.3
-0.003
2.1
3.1
4.1
84
6
Distortion < 0.1% for all magnifications. Working Distance = 188 mm for all
