Donegan LP-10 Replacement Lens Plate for OptiVISOR, 3.5X Magnification, 4″ Focal Length

The Donegan alternative lens plate for the OptiVISOR hands-free, headband binocular magnifier, has an optical-grade, acrylic lens floor and polished right into a prismatic lens, and is offered in a number of dioptric strengths which offer particular magnification energy (X) at specified focal lengths, or distance from object. This magnifier enhances the dimensions and backbone of an object or picture, and is usually used for quite a lot of functions akin to jewelry-making, watch-making, knitting, paintings, digital inspection, book-reading, print inspection, and stamp-collecting.

Figuring out Magnification

Diopter Magnification Focal Size
(Distance from Object) Pattern View 20/20 imaginative and prescient 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) The OptiVISOR alternative lens plate is made from a sturdy plastic materials. It’s constructed to interchange out and in of the OptiVISOR physique with ease. The alternative lens plate comes housed in a protecting carrying case, and has a one-year restricted guarantee.
Diopter (D) is a technical time period for the measurement of the sunshine curvature and thickness of a lens. A dioptric quantity and a magnification quantity usually are not the identical factor. Diopter energy represents a selected magnification energy (X). For instance, a 5-diopter supplies 2.5X magnification (at a distance of 8”). The upper the diopter, the extra magnification a lens can present. As magnification will increase, distance to the article (focal size), and area of view (diameter, or narrowness of view) lower. Magnifiers and prescription eyeglasses have a diopter worth, akin to 1.5 or 2. The dioptric energy of an adjunct lens, akin to prescription eyeglasses or an eye fixed loupe, have to be added to the dioptric energy of the magnifier to calculate whole magnification.
Magnifiers are units used to enlarge the visible look of an object or picture. Magnifiers are available in quite a lot of kinds akin to hand-held, headband, standing, clip-on, eye loupe, and those who dangle in a necklace kind, or slot in a trouser pocket. Magnifiers are generally made from plastic or glass. They’ll have a number of lenses with various magnification skills, and may have a binocular configuration with a single lens, or two separate lenses. They’re generally used with LED or fluorescent gentle sources to assist management viewing capabilities. Magnifier means is usually expressed as magnification at a selected size. For instance, 1.75X at 14” implies that when a magnifier is held at 14” from a viewer’s eyes, the article might be magnified 1.75 instances (X) its precise dimension. As magnification will increase, viewing areas and focal size lower. Magnifiers generally have a diopter quantity, expressed as + or – D, which is a measurement of energy (or energy) of the lens. Some magnifiers are marked with a dioptric quantity on the lens. A excessive diopter quantity has the next magnification than a low diopter quantity. Aspheric magnifiers, in contrast to spheric magnifiers, produce a pointy picture to the sting of the lens for much less distortion. Magnifiers are extensively utilized in jewellery inspection and fabrication, watch-making, digital inspection, needlework, paintings, studying, print inspection, and stamp-collecting.
Donegan Optical manufactures and distributes precision visible units for hobbyists and professionals in business, dwelling, workplace and crafts functions. The corporate was based in 1952 and is headquartered in Lenexa, Kansas.
What’s within the Field?

• Alternative lens plate for OptiVISOR magnifier
• Fitted carrying case
• Instruction handbook

Is Discontinued By Producer ‏ : ‎ No
Product Dimensions ‏ : ‎ 4 x 4.06 x 0.04 inches; 1.6 ounces
Merchandise mannequin quantity ‏ : ‎ 633096000571
Date First Obtainable ‏ : ‎ April 1, 2006
Producer ‏ : ‎ Donegan Optical
ASIN ‏ : ‎ B0015IN8HS
Finest Sellers Rank: #9 in Microscope Lenses
Buyer Evaluations: 4.7 4.7 out of 5 stars 360 rankings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘prepared’).execute(operate(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click on’, { “allowLinkDefault”: true }, operate (occasion) { if (window.ue) 0) + 1); } ); } }); P.when(‘A’, ‘cf’).execute(operate(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click on’, { “allowLinkDefault” : true }, operate(occasion){ if(window.ue) }); });

Alternative lens to be used with OptiVISOR magnifying visor (bought individually)
Gives 10-diopter (3.5X) magnification
Optical-grade acrylic prismatic lens for improved focus and lowered eye pressure
4″ focal size for quite a lot of makes use of
Made in USA