Phone Smartphone 12X Telephoto Telescope Zoom Camera
tra Thin Lenses 2.light rays which are reflected become polarized.polarizing filters are used to select which light rays enter your camera lens.they can remove unwanted reflections from non-metallic surfaces. The filter can remove the reflections from the non-metallic surfaces like water and glass.......
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Product Description
tra Thin Lenses
2.light rays which are reflected become polarized.polarizing filters are used to select which light rays enter your camera lens.they can remove unwanted reflections from non-metallic surfaces.
The filter can remove the reflections from the non-metallic surfaces like water and glass.
With this filter, color saturation can be improved significantly especially outdoors and landscape.
It enhance contrast and the colors shall become brighter and cleaner in the photo.
Double Thread which can install the screw mount lens hood.
Our cemented IR Achromatic Doublets, which are optimized at infinite conjugate ratios, are designed to work in the telecommunications region (1050 - 1700 nm). With design wavelengths at 1016 nm, 1330 nm, and 1550 nm, these achromatic doublets are useful for controlling chromatic aberration. They can also be used to achieve a diffraction-limited spot when using a monochromatic source like a laser.
| Design Wavelengths | 1016 nm, 1330 nm, and 1550 nm |
| AR Coating Range | 1050 - 1700 nm |
| Reflectance over AR Coating Range (0° AOI) | Ravg < 0.5% |
| Diameters Available | 5 mm, 6 mm, 6.35 mm, 8 mm, 1/2, 1, 30 mm, or 2" |
| Diameter Tolerance | +0.00/-0.10 mm |
| Focal Length Tolerance | ±1% |
| Surface Quality | 40-20 Scratch-Dig |
| Spherical Surface Powera | 3λ/2 |
| Spherical Surface Irregularity (Peak to Valley) | λ/4 |
| Centration | <3 arcmin |
| Clear Aperture | >90% of Diameter |
