产品简介：
BT4M系列双远心镜头专为2/3"以上靶面设计的双远心镜头。最大可覆盖到4/3"(对角线22.6mm)的成像靶面。针对不同种类的相机设计了C和F两种接口的产品。
产品特点：
适合1"及其以下靶面各种C或F接口相机；
适合大尺寸物体的高精密检测，如电器元件、电路板、机械零件等
远心度小，分辨率高、低于0.1%的畸变
在景深范围内，没有放大倍率的变化
最大适合4/3"靶面相机
规格参数：
|
型号
|
放大 倍率
|
视场
|
物距 ① (mm)
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光圈 F#
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远心度 ② (deg.)
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畸变率 (%)
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景深 ③ (mm)
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接口
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长度 ④ (mm)
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直径 (mm)
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||
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宽×高（mm）
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||||||||||||
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CCD靶面尺寸
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||||||||||||
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(1″)
|
(1.2″)
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(4/3″)
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||||||||||
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BT4M-16C
|
1.055
|
12.1x9.1
|
14.4x14.4
|
17.2x12.9
|
45
|
16
|
<0.08
|
<0.08
|
1.1
|
C
|
171
|
45
|
|
BT4M-16F
|
1.055
|
12.1x9.1
|
14.4x14.4
|
17.2x12.9
|
45
|
16
|
<0.08
|
<0.08
|
1.1
|
F
|
150
|
62
|
|
BT4M-24C
|
0.700
|
18.3x13.7
|
21.7x21.7
|
25.9x19.4
|
69
|
16
|
<0.08
|
<0.08
|
2.4
|
C
|
194
|
45
|
|
BT4M-24F
|
0.700
|
18.3x13.7
|
21.7x21.7
|
25.9x19.4
|
69
|
16
|
<0.08
|
<0.08
|
2.4
|
F
|
165
|
62
|
|
BT4M-36C
|
0.486
|
26.3x19.7
|
31.3x31.3
|
37.2x28.0
|
103
|
16
|
<0.05
|
<0.08
|
5
|
C
|
222
|
61
|
|
BT4M-36F
|
0.486
|
26.3x19.7
|
31.3x31.3
|
37.2x28.0
|
103
|
16
|
<0.05
|
<0.08
|
5
|
F
|
193
|
62
|
|
BT4M-48C
|
0.369
|
34.7x26.0
|
41.2x41.2
|
49.1x36.9
|
134
|
16
|
<0.08
|
<0.08
|
8.7
|
C
|
261
|
75
|
|
BT4M-48F
|
0.369
|
34.7x26.0
|
41.2x41.2
|
49.1x36.9
|
134
|
16
|
<0.08
|
<0.08
|
8.7
|
F
|
238
|
75
|
|
BT4M-56C
|
0.314
|
40.8x30.6
|
48.4x48.4
|
57.6x43.3
|
159
|
16
|
<0.05
|
<0.04
|
12
|
C
|
270
|
80
|
|
BT4M-56F
|
0.314
|
40.8x30.6
|
48.4x48.4
|
57.6x43.3
|
159
|
16
|
<0.05
|
<0.04
|
12
|
F
|
242
|
80
|
|
BT4M-64C
|
0.275
|
46.6x34.9
|
55.3x55.3
|
65.8x49.5
|
182
|
16
|
<0.05
|
<0.04
|
15.7
|
C
|
312
|
100
|
|
BT4M-64F
|
0.275
|
46.6x34.9
|
55.3x55.3
|
65.8x49.5
|
182
|
16
|
<0.05
|
<0.04
|
15.7
|
F
|
281
|
100
|
|
BT4M-80C
|
0.221
|
58.0x43.5
|
68.9x68.9
|
82.0x61.7
|
227
|
16
|
<0.05
|
<0.04
|
24.4
|
C
|
347
|
116
|
|
BT4M-80F
|
0.221
|
58.0x43.5
|
68.9x68.9
|
82.0x61.7
|
227
|
16
|
<0.05
|
<0.04
|
24.4
|
F
|
318
|
116
|
|
BT4M-96C
|
0.186
|
68.7x51.5
|
81.6x81.6
|
97.1x73.0
|
280
|
16
|
<0.04
|
<0.04
|
34.2
|
C
|
392
|
143
|
|
BT4M-96F
|
0.186
|
68.7x51.5
|
81.6x81.6
|
97.1x73.0
|
280
|
16
|
<0.04
|
<0.04
|
34.2
|
F
|
363
|
143
|
|
BT4M-144C
|
0.122
|
104.7x78.6
|
124.4x124.4
|
148.1x111.3
|
398
|
16
|
<0.05
|
<0.04
|
79.5
|
C
|
537
|
200
|
|
BT4M-144F
|
0.122
|
104.7x78.6
|
124.4x124.4
|
148.1x111.3
|
398
|
16
|
<0.05
|
<0.04
|
79.5
|
F
|
512
|
200
|
|
BT4M-192C
|
0.073
|
174.9x131.1
|
207.7x207.7
|
247.3x185.8
|
531
|
16
|
<0.05
|
<0.04
|
148.1
|
C
|
682
|
260
|
|
BT4M-192F
|
0.073
|
174.9x131.1
|
207.7x207.7
|
247.3x185.8
|
531
|
16
|
<0.05
|
<0.04
|
148.1
|
F
|
653
|
260
|
①物距：前端物镜与物体的距离。使用时将其设定在标准值的±3%之内可达到最佳分辨率和最低畸变。
②远心度：镜头主射线的最大斜率：以毫拉德计算时镜头拍摄物每毫米物体位移的最大误差。
③景深：虽然位于景深边缘的图像测量数据仍然有效，但是要想获得清晰图像，应尽量采用标称景深的一半。