Donegan LX-5 Optivisor Headband Magnifier, 2.25X Magnification Optical-Grade Acr

Description: Menu Other Items Feedbacks About Us Contact Us Add To Favorites Donegan LX-5 Optivisor Headband Magnifier, 2.25X Magnification Optical-Grade Acrylic Lens Plate, 8" Focal Length Headband binocular visor with snap-in 2.25X magnifying lens plate for hands-free viewingOptical-grade acrylic prismatic lenses for improved focus and reduced eye strainVisor size-adjustment knob for customized fitVisor tilts out of way when not needed8" focal length for a variety of uses 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 . 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 jewelryDetermining MagnificationDiopterMagnificationFocal 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 magnifierFitted, plastic carrying caseInstruction manual Item Specification Item model number LX-5 Batteries Required? No Color Gray Product Dimensions 11.5 x 8 x 2 inches; 4.8 ounces Lens Material Acrylic Item Weight 0.3 Pounds Is Discontinued By Manufacturer No Size 2.5x Magnification, 8" Focal Length Dimensions Shipping Returns Additional Info Product Dimensions: 8.0 inches x 11.5 inches x 2.0 inches. Weight: 0.3 lb Fast shipping is very important for us. Our standard shipping service is FREE. Your order will be shipped within 1-3 business days upon full payment received. Most items are delivered within 3-5 business days, however, please allow 3-10 business days. We are shipping only to USA. We only ship to the confirmed Paypal address. We reserve the right to cancel any order for any reason at any time. We are not responsible for undeliverable addresses. We offer a 30 day return policy from checkout winning date. Your satisfaction is guaranteed! If for any reason you are unhappy with your item, just return it within 30 days for a full refund, minus shipping cost. Please contact us prior to initiating a return so that we can issue you a refund authorization. Items defective upon receipt must be packaged in their retail packaging as if new and returned with a detailed description of the problem. Return shipping fees are not refundable. We reserve the right to decline any returns if the above guidelines are not followed. All of our items, unless otherwise stated, will only run on 120 volts. Please check to make sure your country complies with these specifications. If you have a problem or question regarding your transaction please contact us before leaving any type of feedback. We will work with you to resolve any problem you may have.

Price: 66.99 USD

Location: El Monte, California

End Time: 2025-01-21T10:49:19.000Z

Shipping Cost: 0 USD