The Optivisor is a precision binocular headband magnifier - these units are an excellent quality Chinese-made version and include 4 optical glass lens plates. The design is extremely popular and allows maximum efficiency for close work while reducing eye strain. This binocular headband loupe leaves both hands free and allows three dimensional vision. This magnifier can be worn over prescription or safety eyeglasses.
This item includes 4 lens plates - 1.5X lens with focal length of 50cm, 2.0X lens with focal length of 25cm, 3.5X lens for very close work at 12.5cm distance and the most popular 2.5X lens (equivalent to DA-5) for working at about 20cm distance.
The Magnifier comes fitted with the 3.5X lens - just snap in any of the other 3 lens' if you require a shorter focal length.
This magnifier has these features in common with the Donegan Optivisor:
- Optical Glass Prismatic Lenses - ground and polished to precision optical standards - mounted in interchangeable plastic frame.
- The Magnifier Tilts - adjustable pivots allow the visor to be tilted out of the way when not needed and at your fingertips when you need magnification.
- Adjustable Headband - conforms to fit all head sizes (using the adjustable screw at the back) and comfortable when worn for long periods of time.
- High Impact Visor - tough and durable.
- Cushioned Band for extra comfort.
NOTE: This is not a Donegan Optivisor made in the USA but a Chinese version which offers the same excellent quality product with the added bonus of 4 magnification lens plates to choose from so it represents great value.
NOTE - when comparing lens between the original Donegan version, please note that their lens are labelled as per the Dioptre value and NOT magnification level. Therefore, the DA5 lens is equivalent to the 2.5X lens in this headband magnifier, the DA10 lens is equivalent to the 3.5X lens.
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