Application
- Film, glass
- R&, Quality control
Feature
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Wide measurement range
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High accuracy
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Reduce daily maintenance workload and consumable goods consumption
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Compatible with KOBRA-W series
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Focus on operativity
Wide range of measurement from low ratardation (less than 2nm) to high retardation ( 20000nm)
Specially emphasis on performing high accuracy of orientation angle and long-term stable measurement.
Using the standard LED light source, so there is no need to change the lamp
Sample holders, option jigs can be used interchangeably
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Opening parts be made bigger than the conventional KOBRA-W series
Measurement method
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- Parallel Nicol rotation method
- Rotating polarizer method
- Parallel Nicol spectroscopy method
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Specifications
| Name | Retardation measuring system | Wide range retardation measuring system | Elliptical polarization measuring system | Elliptical polarization measuring system (Wide range of ratardation) | For reference (Elliptical polarization measuring system) |
| Model | KOBRA-HBR | KOBRA -HBR/SPC | KOBRA -HBPR | KOBRA -HBPR/SPC | KOBRA -WPR |
| Retardation ~5000nm | 〇 | 〇 | 〇 | 〇 | ｘ（~1nm) △(1nm~) |
| Retardation 800~20000nm | 〇 | 〇 | △(~5000nm) | ||
| Elliptical polarization | 〇 | 〇 | 〇 | ||
| Conventional model | KOBRA-WR | --- | KOBRA-WPR | --- |
Compare KOBRA-HB Series and KOBRA-W Series
| KOBRA-HB Series | KOBRA-W Series | |||
| Wave length | 450,500,550,590,630,680 400~800nm(spectroscopy) |
450,500,550,590,630,750nm | ||
| Sample size | Normal incidence: >30mm, Incident angle dependence:30~40x50mm t<=3mm |
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| Measurement area | 33mm2(5.8mmLight receiving element area) φ0.8mm(spectroscopy) |
33mm2(Light receiving element area) | ||
| Dimension | W300xD700xH500mm | W500xD830xH700mm | ||
