Donegan DA-2 OptiVISOR He... has been added to your Cart

Ship to:
To see addresses, please
or
Please enter a valid US zip code.
or

Other Sellers on Amazon
Add to Cart
$40.60
+ Free Shipping
Sold by: Lighthouse Louisiana
Add to Cart
$40.77
+ Free Shipping
Sold by: MAGNIFYING AIDS
Have one to sell? Sell on Amazon

Donegan DA-2 OptiVISOR Headband Magnifier, 1.5X Magnification Glass Lens Plate, 20" Focal Length

4.6 out of 5 stars 978 customer reviews

List Price: $73.09
Price: $41.18 & FREE Shipping—or get FREE Two-Day Shipping with Amazon Prime
You Save: $31.91 (44%)
In Stock.
Ships from and sold by Amazon.com. Gift-wrap available.
1.5x Magnification, 20" Focal Length
    This fits your .
  • Enter your model number to make sure this fits.
  • Headband binocular visor with snap-in 1.5X magnifying lens plate for hands-free viewing
  • Ground and polished glass prismatic lens for improved focus and reduced eye strain
  • Visor size-adjustment knob for customized fit
  • Visor tilts out of way when not needed
  • 20" focal length for a variety of uses

Product Specifications
Part Number DA-2
Number of Items 1
Color White
EAN 0633096000472
Is Assembly Required? false
Item Weight 8.0  ounces
Material Glass
Model Number 633096000472
Size 1.5x Magnification, 20" Focal Length
Style 2 Diopter; DA-2
UPC 633096000472
Specification for this product family
Brand Name Donegan Optical
UNSPSC Code 41111713

19 new from $36.99 7 used from $32.29

New Star Wars Toys delivered monthly

$41.18 & FREE Shipping—or get FREE Two-Day Shipping with Amazon Prime In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently bought together

  • Donegan DA-2 OptiVISOR Headband Magnifier, 1.5X Magnification Glass Lens Plate, 20" Focal Length
  • +
  • Donegan LP1 OptiLOUPE Magnifier for OptiVISOR, Adds 2.5X Magnification
  • +
  • Quasar Led Lighting System for Optivisors
Total price: $82.15
Buy the selected items together

Product description

Size:1.5x Magnification, 20" Focal Length

The Donegan OptiVISOR is a hands-free, headband binocular magnifier that has optical glass lenses that are ground and polished into prismatic lenses for quality and clarity, and is available in multiple dioptric strengths (indicated by the number in the model) which provide specific magnification power (X) at specific 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 magnifier features replaceable binocular lenses that have beveled edges that are mounted in an interchangeable plastic frame. 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”). See the magnification chart. 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) decreases. 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 inspection and fabrication, watch-making, needlework, artwork, reading, print inspection, and stamp-collecting.

 

Determining Magnification

Diopter
Magnification
Focal length
(Distance from object)
Sample view
20/20 vision
20" (50.8cm)
No Magnification
2-diopter lens
1.50X
20" (50.8cm)
1.50x Magnification
3-diopter lens
1.75X
14" (35.56cm)
1.75x Magnification
4-diopter lens
2.00X
10" (25.4cm)
2.0x Magnification
5-diopter lens
2.50X
8" (20.32cm)
2.50x Magnification
7-diopter lens
2.75X
6" (15.24cm)
2.75x Magnification
10-diopter lens
3.50X
4" (10.16cm)
3.50x Magnification

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
  • Fitted, plastic, carrying case
  • Instruction manual


Product details

Size: 1.5x Magnification, 20" Focal Length
  • Product Dimensions: 12 x 8 x 2.3 inches ; 8 ounces
  • Shipping Weight: 8 ounces (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • ASIN: B000EM98KM
  • Item model number: 633096000472
  • Average Customer Review: 4.6 out of 5 stars 978 customer reviews
  • Amazon Best Sellers Rank: #13,209 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

    Would you like to tell us about a lower price?


Customer Questions & Answers

Customer reviews

Top customer reviews

on June 10, 2016
Size: 2.5x Magnification, 8" Focal Length|Verified Purchase
22 comments| 58 people found this helpful. Was this review helpful to you?YesNoReport abuse
on June 20, 2016
Size: 3.5x Magnification, 4" Focal Length|Verified Purchase
review image
0Comment| 12 people found this helpful. Was this review helpful to you?YesNoReport abuse
on March 27, 2015
Size: 1.75x Magnification, 14" Focal Length|Verified Purchase
0Comment| 3 people found this helpful. Was this review helpful to you?YesNoReport abuse
Size: 2.5x Magnification, 8" Focal Length|Verified Purchase
0Comment|Was this review helpful to you?YesNoReport abuse
on November 22, 2016
Size: 2.5x Magnification, 8" Focal Length|Verified Purchase
0Comment| 2 people found this helpful. Was this review helpful to you?YesNoReport abuse
on March 23, 2014
Size: 2x Magnification, 10" Focal Length|Verified Purchase
0Comment| 88 people found this helpful. Was this review helpful to you?YesNoReport abuse
on July 4, 2017
Size: 1.5x Magnification, 20" Focal Length|Verified Purchase
0Comment|Was this review helpful to you?YesNoReport abuse

Most recent customer reviews

Set up an Amazon Giveaway

Donegan DA-2 OptiVISOR Headband Magnifier, 1.5X Magnification Glass Lens Plate, 20" Focal Length
Amazon Giveaway allows you to run promotional giveaways in order to create buzz, reward your audience, and attract new followers and customers. Learn more about Amazon Giveaway
This item: Donegan DA-2 OptiVISOR Headband Magnifier, 1.5X Magnification Glass Lens Plate, 20" Focal Length

Pages with related products. See and discover other items: magnifying hobby glass, visor light, eye models, craft glass, train craft