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Protect Lenses from Impurities
Protective filters protect lenses from dirt, dust, harsh ambient conditions and so on. Usually, they block a portion of the UV spectrum, although those used in infrared applications block visible wavelengths too.
Protective filters from Polytec come in glass or acrylic.
Mount & Size Options:
- Threaded mount sizes: M22.5 to M105
- C / CS mount, slip mount for lenses without filter threads, step-up / step-down adapter
- Custom shapes and sizes; mounted and unmounted versions available
LP-Series: lens protection
| Art. no. | Description | Transmission | Filter curve |
LP285 | High Trans. Heat Resistant VIS-NIR A/R Protective Window | 350-1100 nm | Curve |
LP330 | Protective Window | 350-1100 nm | Curve |
LP340 | A/R Protective Window | 350-800 nm | Curve |
LP390 | UV Absorbing Protective Window | 410-1100 nm | Curve |
LP415 | UV Block A/R Protective Window | 415-1100 nm | Curve |
AC-series: Acryl-Longpass
| Art. no. | Description | Transmission | Filter curve |
AB555 | Acrylic Absorptive NIR/UV-Block Filter | 470-645 nm | Curve |
AC370 | C/R Acrylic Protective Window | 380-850 nm | Curve |
AC380 | A/R Acrylic Protective Window | 450-850 nm | Curve |
AC685 | Acrylic NIR Longpass Filter | 710-1100 nm | Curve |
AC760 | Acrylic NIR Longpass Filter | 780-1100 nm | Curve |
AC800 | Acrylic Near-IR Longpass Filter | 815-1100 nm | Curve |
AC850 | Acrylic Near-IR Longpass Filter | 880-1100 nm | Curve |
AC900 | Acrylic Near-IR Longpass Filter | 930-1100 nm | Curve |
AC915 | Acrylic Near-IR Longpass Filter | 1048-1650 nm | Curve |
