- HomeElectronicsCamera & PhotoAccessoriesTelescope & Microscope AccessoriesMicroscope AccessoriesLenses
The Donegan replacement lens plate for the OptiVISOR hands-free, headband binocular magnifier, has an optical-grade, acrylic lens ground and polished into a prismatic lens, and is available in multiple dioptric strengths which provide specific magnification power (X) at specified focal lengths, or distance from object. This magnifier enhances the size and resolution of an object or image, and is commonly used for a variety of applications such as jewelry-making, watch-making, knitting, artwork, electronic inspection, book-reading, print inspection, and stamp-collecting.
Determining Magnification
Diopter | Magnification | Focal Length (Distance from Object) | Sample View | ||||||||||||||||||
20/20 vision | 20" (50.8cm) | ![]() | |||||||||||||||||||
2-diopter lens | 1.50X | 20" (50.8cm) | ![]() | ||||||||||||||||||
3-diopter lens | 1.75X | 14" (35.56cm) | ![]() | ||||||||||||||||||
4-diopter lens | 2.00X | Donegan LP-3 Replacement Lens Plate for OptiVISOR, 1.75X Magnification, 14" Focal LengthCurrent Price $28.73 Average $26.61 Min Price $16.04 Max Price $38.73 Price dynamics 7% Description The Donegan replacement lens plate for the OptiVISOR hands-free, headband binocular magnifier, has an optical-grade, acrylic lens ground and polished into a prismatic lens, and is available in multiple dioptric strengths which provide specific magnification power (X) at specified focal lengths, or distance from object. This magnifier enhances the size and resolution of an object or image, and is commonly used for a variety of applications such as jewelry-making, watch-making, knitting, artwork, electronic inspection, book-reading, print inspection, and stamp-collecting. Determining Magnification
| |||||||||||||||||||





