Microscope Objectives for NIR-Raman Spectroscopy
Microscope objectives for NIR-Raman spectroscopy
RiverD International offers a unique range of custom-designed microscope objectives for use in near-infrared Raman microspectroscopy.
Specifications:
- on-optical-axis diffraction limited design
- achromatic design: 650-1000nm
- transmission: >85% (650-1000nm)
- lens materials selected for minimization of Raman/luminescent signal background
- infinitely corrected
- back aperture: 10mm
- thread M25 x 0.75
- objective design optimized for use with fused silica cover glasses/substratee
| Numerical Aperture | Immersion | Substrate/cover glass protection | Working distance [mm] | Application |
|---|---|---|---|---|
| 0.65 | dry | no | 2.5 | For upright microscope setup |
| 0.85 | dry | no | 2.5 | For upright microscope setup |
| 0.78 | dry | 0.8 mm fused silica | 1.5* | For inverted microscope setup |
| 0.85 | oil (n: 1.45) | 0.5-1 mm fused silica | 1.5* | For inverted microscope setup |
| 1.2 | oil (n: 1.45) | 0.5-1 mm fused silica | 1.5* | For inverted microscope setup |
Accessories
NIR achromatic (650-1000nm) custom-designed re-focusing lens, optimized for use with the range of objectives shown above (diameter: 25mm, focal length: 100 mm)
Recommended Immersion oil/gel
- Cargille fused silica matching liquid (code numbers: 50350, 06350)
- Cargille optical gel (code numbers 0607, 0608)