PVS-14 Fixed Aperture / Depth of Field Cap
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Threaded fixed aperture cap for PVS-14 optics, improving depth of field while reducing incoming light.
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- Źródło
- Printables
- Kategoria
- Electronics
- Licencja
- Creative Commons — Public Domain
This is a simple fixed aperture cap for PVS-14-style objective lenses. It reduces the effective aperture of the objective, which can increase depth of field and make it easier to see objects at different distances without constantly adjusting focus.
The included OpenSCAD model is fully parametric. You can modify:
aperture diameter,
thread diameter and pitch,
threaded section length,
outer cap diameter,
cap thickness,
internal relief diameter.
The default version uses an 8 mm aperture, but other sizes such as 6, 10 or 12 mm can be generated by changing the aperture_d value in the OpenSCAD file.
Please note that reducing the aperture also reduces the amount of light reaching the intensifier tube. Smaller apertures provide greater depth of field but produce a darker image. This is not intended to replace a proper daylight protective cap.
The thread dimensions may require adjustment depending on the specific PVS-14 objective, printer calibration and filament shrinkage. Test the fit carefully and never force the printed thread into the lens housing.
The model was created with AI assistance. ChatGPT helped generate, troubleshoot and refine the OpenSCAD code, while the concept, testing, dimensions and final implementation were handled by the uploader.