I need a replacement bezel for the object lens on my Tasco 12 X 50 binoculars

SOURCE: Problem with objective lens

This is an air separated doublet (invented in the 1700s). Each lens element is made of a different type of glass to reduce false color. So if you get it back together wrong you will notice the bad image. Look at the edges of the elements the thinner one usually goes in front. The concave surface of the rear element should also face front. With the plastic separation ring in place the convex surface of the front element should not come into contact with the rear element's concave surface. It shouldn't rock, there should be about 1mm air separation between them. On shorter focal length refractors (under 500mm) the front surface of the front element has less concavity that the rear surface. On longer focal lengths they are about the same. All I can say is try this and if the image isn't that great flip the front element and try it that way. And don't feel too bad we've all learned the hard way to mark the edges of the elements as we take them out. HTH

SOURCE: BINOCULAR ALIGNMENT

Up close to the eyepieces under the material that covers the binocs. You have to peel away at the material to get to them, or look for the splice in the material which is very hard to see.

SOURCE: replacement parts for Tasco binoculars

You'll need to measure your eyepiece in "mm". Also determine if your eyepiece has an outer ring the eyepiece will slip over. You can find eyecups/guards on Ebay. Search under Binocular Eyecup or Binocular Eye Guard. There are also eyecups under "rubber eyecups/rubber eyeguards" but alot of these are for Microscopes and may not fit. You will need to pay close attention to the mounting type and measurements.

SOURCE: Fujinon-Mariner WPC-XL Lens Cap replacement

You can order a replacement set at: http://www.bakermarineusa.com/index.php?id=17&cat=38&prod=137

SOURCE: two rubber eye pieces for Tasco 6x.18x35 triple zoom binoculars

Link

Hi,

Your binocular might be needing some repair or material replacement. Kindly refer to above link to contact Support Team of Nikon

Thank you.