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Mitutoyo 378-890-8 | LCD Plan Apo NUV Objective | 20x, N.A. 0.42, t0.7 mm glass
The LCD Plan Apo NUV 20x (378-890-8) is an infinity-corrected objective with N.A. 0.42, corrected for 355-620 nm for bright-field work in the NUV range. Its working distance is 17.2 mm through the cover glass and 16.96 mm in air, and it compensates for a 0.7 mm BK-7 cover glass. For the 378-890-8, the long-working-distance plan apochromat design suits bright-field inspection and laser applications.
Key features
- Resolving power 0.7 µm with a depth of focus of 1.6 µm.
- Field of view: ø1.2 mm with a ø24 mm eyepiece, 0.24 x 0.32 mm with a 1/2 in digital camera chip.
- Focal distance 10 mm, parfocal distance 95 mm.
- High resolution: no; laser applications: yes; glass compensation: yes.
- Mass 340 g.
- Specifications
- Downloads
| Part Number | 378-890-8 |
| Brand | Mitutoyo |
| Model | LCD plan Apo NUV 20X (t0.7) |
| Magnification | 20x |
| Cover Glass | 0.7 mm BK-7 |
| Working Distance (Through Glass) | 17.2 mm |
| Working Distance (In Air) | 16.96 mm |
| Corrected Wavelength | 355-620 nm |
| Numerical Aperture (N.A.) | 0.42 |
| Focal Distance (f) | 10 mm |
| Parfocal Distance | 95 mm |
| Resolving Power | 0.7 µm |
| Depth of Focus | 1.6 µm |
| Field of View (ø24 mm eyepiece) | ø1.2 mm |
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