暗场照明装置对目标区域提供低角度照明。这些机器视觉光源提高表面特征的对比度，例如激光压印或雕刻的标识，特别适用于如BGA植球，读取激光刻蚀标记或检查表面几何轮廓之类的应用。暗场照明装置使用一个单一层LED安装在相对于光轴 70º （DF 50 模型）或 90º （DF 100, DF 150-1 模式），或三层LED安装在相对于光轴 75º （DF 150-3 模型）。
- 三种颜色和五个尺寸
- 提供有效低角度照明
- 提高对比表面特征例如激光压印或雕刻标记
- 高速机器视觉应用具有频闪模式
照明实例:
金属表面压印logo：低角度照明获得了高对比度图像
工作原理:
| Darkfield 50 Continuous |
| Part Number | Description |
| NER-011609311 | DF-50, R LED-ND, 24V-C, 4.5M （15 ft.） Cbl w/Flying Leads |
| NER-011609321 | DF-50, W LED-ND, 24V-C, 4.5M （15 ft.） Cbl w/Flying Leads |
| NER-011609331 | DF-50 B LED-ND 24V-C 2M [6.6'] CBL W/DB9 |
| Darkfield 100 Continuous |
| NER-011601520 | DF-100-1, R LED-ND, 24V-C, 4.5M （15 ft.） Cbl w/Flying Leads |
| NER-011601521 | DF-100-1, R LED-D, 24V-C, 4.5M （15 ft.） Cbl w/Flying Leads |
| Darkfield 150 Continuous |
| NER-011600020 | DF-150-1, R LED-ND, 24V-C, 4.5M （15 ft.） Cbl w/Flying Leads |
| NER-011600031 | DF-150-1, W LED-ND, 24V-C, 4.5M （15 ft.） Cbl w/Flying Leads |
| NER-011600070 | DF-150-1, B LED-ND, 24V-C, 4.5M （15 ft.） Cbl w/Flying Leads |
| NER-011600021 | DF-150-1, R LED-D, 24V-C, 4.5M （15 ft.） Cbl w/Flying Leads |
| NER-011600041 | DF-150-1, W LED-D, 24V-C, 4.5M （15 ft.） Cbl w/Flying Leads |
| NER-011600208 | DF-150-3, R LED-ND, 24V-C, 4.5M （15 ft.） Cbl w/Flying Leads |
| NER-011600206 | DF-150-3, W LED-ND, 24V-C, 4.5M （15 ft.） Cbl w/Flying Leads |
| Darkfield 200 Continuous |
| NER-011603300 | DF-200-1, R LED-D, 24V-C, 4.5M （15 ft.） Cbl w/Flying Leads |
| Power Supply Darkfields Continuous |
| NER-011504100 | DSP60 24VDC 2.5A DIN Mount Power Supply |
| Power Supply Cordsets |
| NER-030028300 | AC Power Cord for DSPxx Power Supply, US |
| NER-030028400 | AC Power Cord for DSPxx Power Supply, EU |
| NER-030028500 | AC Power Cord for DSPxx Power Supply, UK |
| Darkfield 50 Strobed |
| Part Number | Description |
| NER-011609312 | DF-50, R LED-ND, 24V-S, 4.5M （15 ft.） Cbl w/Flying Leads |
| NER-011609322 | DF-50, W LED-ND, 24V-S, 4.5M （15 ft.） Cbl w/Flying Leads |
| NER-011609332 | DF-50 B LED-ND 24V-S 2M [6.6'] CBL W/DB9 |
| Darkfield 100 Strobed |
| NER-011601502 | DF-100-1, R LED-D, 24V-S, 4.5M （15 ft.） Cbl w/Flying Leads |
| Darkfield 150 Strobed |
| NER-011600004 | DF-150-1, R LED-ND, 24V-S, 4.5M （15 ft.） Cbl w/Flying Leads |
| NER-011600032 | DF-150-1, W LED-ND, 24V-S, 4.5M （15 ft.） Cbl w/Flying Leads |
| NER-011600080 | DF-150-1, B LED-ND, 24V-S, 4.5M （15 ft.） Cbl w/Flying Leads |
| NER-011600007 | DF-150-1, R LED-D, 24V-S, 4.5M （15 ft.） Cbl w/Flying Leads |
| NER-011600042 | DF-150-1, W LED-D, 24V-S, 4.5M （15 ft.） Cbl w/Flying Leads |
| NER-011600209 | DF-150-3, R LED-ND, 24V-S, 4.5M （15 ft.） Cbl w/Flying Leads |
| NER-011600207 | DF-150-3, W LED-ND, 24V-S, 4.5M （15 ft.） Cbl w/Flying Leads |
| Darkfield 200 Strobed |
| NER-011603301 | DF-200-1, R LED-D, 24V-S, 4.5M （15 ft.） Cbl w/Flying Leads |
| Power Supply/Controllers Darkfield Strobed |
| NER-011504100 | DSP60 24VDC 2.5A DIN Mount Power Supply |
| 98-000152-01 | NL200 Lighting Controller （Front Panel Control Only） |
| 98-000152-02 | NL220 Lighting Controller （Ethernet Control Only） |
| 98-000152-03 | NL220F Lighting Controller （Ethernet Control Only with Fast Strobe Capability） |
| Power Supply Cordsets |
| NER-030028300 | AC Power Cord for DSPxx Power Supply, US |
| NER-030028400 | AC Power Cord for DSPxx Power Supply, EU |
| NER-030028500 | AC Power Cord for DSPxx Power Supply, UK |
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