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[ 光學鏡組 | Computar | Telecentric Lens ]
* Very low distortion compared to standard macro lenses.
* Wide depth of field.
* Working distance:140mm-Infinity.
* Suitable for use as a telephoto lens and macro lens.
* Fast F2.8 F-stop at Infinity.
> TEC-M55
Focal Length
55mm
Max. Aperture Ratio
1:2.8
Max. Image Format
8.8(H) x 6.6(V) x11(D)mm
Operation Range Iris
F2.8-F32C
Focus
0.14m-Inf.
Magnification
Inf.-0.5X (Max 1.0X at 140mm with 2X Convertor)
Relative Illumination
78.5%(at 0.5X)
Depth of Field 1/2"
3.5mm(at 0.5X F2.8),
6.0mm(at 0.5X F5.6)

Control

 Iris
Manual
Focus
Manual
Objective Dimension at M.O.D
1.7(H) x 1.3(V)cm 2/3"
Angle of view D
2/3"
11.5°
1/2"
8.3°
H
9.2°
6.7°
V
6.9°
5.0°
Operating
Temperature
-20℃~+50℃
Resolution
Over 100 Lines pair/mm at Center
Over 60 Lines pair/mm at Center
Distortion 2/3" +0.2% at 0.2X(y=5.5) 1/2" +0.1% at 0.2X(y=4.0)
+0.6% at 0.5X(y=5.5) +0.3% at 0.5X(y=4.0)
Back Focal Length
29.8mm
Flange Back Length
17.526mm
Mount
C-Mount
Filter Size
M43 P=0.75mm
Dimentions
Ø53.0 x 92.9mm (Max. at 0.5X)
Weight
320g
CCD Size
H(mm)
V(mm)
D(mm)
2/3"
8.8
6.6
11.0
1/2"
6.4
4.8
8.0
1/3"
4.8
3.6
6.0
1/4"
3.6
2.7
4.5

f=55mm
WD
(mm)
2/3" Field of view
1/2" Field of view
1/3" Field of view
H(mm)
V(mm)
H(mm)
V(mm)
H(mm)
V(mm)
5000
700
525
550
413
413309
3.6
3000
400
300
320
240
240
180
1000
150
113
120
90
90
68
500
70
53
53
40
40
30
300
40
30
32
24
24
18
200
27
20
20
15
15
11
140
17
13
12
9
9
7

f=55mm with 2X Extendar
WD
(mm)
2/3" Field of view
1/2" Field of view
1/3" Field of view
H(mm)
V(mm)
H(mm)
V(mm)
H(mm)
V(mm)
5000
400
300
280
210
210
158
3000
240
180
170
128
128
96
1000
76
57
56
42
42
32
500
37
28
27
20
20
15
300
22
17
17
13
13
10
200
15
11
11
8
8
6
140
8.8
7
6.4
5
5
4

f=55mm with 0.75X Convertor
WD
(mm)
2/3" Field of view
1/2" Field of view
1/3" Field of view
H(mm)
V(mm)
H(mm)
V(mm)
H(mm)
V(mm)
5000
1000
750
740
555
555
416
3000
600
450
430
323
323
242
1000
210
158
160
120
120
90
500
100
75
75
56
56
42
300
60
45
44
33
33
25
200
38
29
28
21
21
16
140
25
19
18
14
14
10
   
 
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update： 2020-03-27