Saturday, January 14, 2012

Big Deal on Donegan LX-5 OptiVISOR With Optical Grade Acrylic Lensplate AL-15 Best price

15% Off Donegan LX-5 OptiVISOR With Optical Grade Acrylic Lensplate AL-15



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Category: Misc.
Brand: Donegan Optical
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Best Donegan LX-5 OptiVISOR With Optical Grade Acrylic Lensplate AL-15 information


Donegan LX-5 OptiVISOR With Optical Grade Acrylic Lensplate AL-15 Review by Rabbi T

My aunt has macular degeneration and is legally blind. She lives alone and with this disease she has been unable to continue her knitting hobby. I bought this product to enhance the little vision she has. Though it musses up hair a little, she can now knit again. This has made her unbelievably happy. Thank you!


Donegan LX-5 OptiVISOR With Optical Grade Acrylic Lensplate AL-15 Review by K. Groh (Pennsylvania)

I wanted a magnifier to do repair work on music boxes. Since I had eye surgery in October, my reading vision went horrible so I really needed something that got me close up and clear.

These do the trick. They are lightweight, have an adjustable headband and flip up when not in use. They have a lightly padded front band that helps it to not dig into your forehead.

I use reading glasses but take them off when using this and I still have a clear view.

I would recommend these for casual hobbyist use.


Donegan LX-5 OptiVISOR With Optical Grade Acrylic Lensplate AL-15 Review by Wayne (MD USA)

This device is comfortable and is focused at the distance advertised. I'd give it 5 stars IF the optional lenses were cost effective. They are not. You can buy a new headset for the cost of each optional lens.

More Reviews...

Donegan LX-5 OptiVISOR With Optical Grade Acrylic Lensplate AL-15::Description


The Donegan OptiVISOR LX is a hands-free, headband binocular magnifier that has an optical-grade, acrylic lens plate that is ground and polished into prismatic lenses for quality, clarity, and durability, and is available in multiple dioptric strengths (indicated in the model number) 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, needlework, artwork, electronic inspection, book-reading, print inspection, and stamp-collecting.

The OptiVISOR LX magnifier features a durable, replaceable binocular lensplate, made of optical grade acrylic (model AL-13). An adjustable headband with padded leather comfort band conforms to a variety of head sizes and provides comfort for hours of continuous use. It can be worn over prescription or safety eyeglasses. A durable, plastic visor tips up above the forehead when not in use. Spring-loaded pivot screws hold the headband in a raised or a forward-facing position. The magnifier weighs 0.67 lbs., and comes housed in a protective shell and carrying case. It has a one-year limited warranty.

Diopter (D) is a technical term for the measurement of the light curvature and thickness of a lens. A dioptric number and a magnification number are not the same thing. Diopter strength represents a specific magnification power (X). For example, a 5-diopter provides 2.5X magnification (at a distance of 8”). The higher the diopter, the more magnification a lens can provide. As magnification increases, distance to the object (focal length), and field of view (diameter, or narrowness of view) decrease. Magnifiers and prescription eyeglasses have a diopter value, such as 1.5 or 2. The dioptric strength of an accessory lens, such as prescription eyeglasses or an eye loupe, must be added to the dioptric strength of the magnifier to calculate total magnification.

Magnifiers are devices used to enlarge the visual appearance of an object or image. Magnifiers come in a variety of styles such as hand-held, headband, standing, clip-on, eye loupe, and those that hang in a necklace form, or fit in a trouser pocket. Magnifiers are commonly made of plastic or glass. They can have one or more lenses with varying magnification abilities, and can have a binocular configuration with a single lens, or two separate lenses. They are sometimes used with LED or fluorescent light sources to help control viewing capabilities. Magnifier ability is often expressed as magnification at a specific length. For example, 1.75X at 14” means that when a magnifier is held at 14” from a viewer’s eyes, the object will be magnified 1.75 times (X) its actual size. As magnification increases, viewing areas and focal length decrease. Magnifiers sometimes have a diopter number, expressed as + or - D, which is a measurement of strength (or power) of the lens. Some magnifiers are marked with a dioptric number on the lens. A high diopter number has a higher magnification than a low diopter number. Aspheric magnifiers, unlike spheric magnifiers, produce a sharp image to the edge of the lens for less distortion. Magnifiers are widely used in jewelry

  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 10" (25.4cm) 5-diopter lens 2.50X 8" (20.32cm) 7-diopter lens 2.75X 6" (15.24cm) 10-diopter lens 3.50X 4" (10.16cm)

inspection and fabrication, watch- making, needlework, artwork, reading, print inspection, and stamp-collecting.

Donegan Optical manufactures and distributes precision visual devices for hobbyists and professionals in industry, home, office and crafts applications. The company was founded in 1952 and is headquartered in Lenexa, Kansas.

What’s in the Box?

  • OptiVISOR LX magnifier
  • Fitted, plastic carrying case
  • Instruction manual



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