How to Fix Binoculars with Double Vision Error? Simple Steps

Last updated on December 24th, 2022 at 12:31 pm

Adventurers depend primarily on binoculars. Therefore finding them with errors is unpleasant. When using binoculars to see a target, a user may have double vision, a complex optical issue. A binocular is deemed worthless if it displays a duplicate image. The topic of double vision and how tofix double vision error in binoculars will be covered in this post.

Why Double Vision Error in Binoculars Occur?

You could experience double vision errors in binoculars for a few different reasons when using binoculars. One possibility is that your binoculars are not correctly aligned. As a result, the lenses can generate two additional images rather than one combined image. You could perhaps not be gripping the binoculars steadily enough. 

If the binoculars move even slightly, this can cause binoculars seeing double error. If you think any of these factors might be causing your issue, try adjusting them and see if the problem improves.

How to Adjust Binoculars with Double Vision? (Simple Steps)

You may repair your damaged binoculars using a variety of techniques. 

  1. First, check the lenses for scratches or cracks. Consider using a soft microfiber cloth to clean them. If that doesn’t work, you may need to replace the lens.
  2. Next, check the alignment of the lenses. If they are not aligned properly, they will need to be adjusted. A professional should carry out this sensitive treatment. 
  3. At last, recheck the binoculars’ focusing. If they are not focused correctly, you can adjust them by turning the screws on the side of the binoculars.

If your binoculars are still not working correctly after following these steps, you may need to take them to a professional for further repair.

Assemble the Necessary Instruments to Repair Double-vision Binoculars

You’ll need several things to fix double vision error in binoculars. It will help you save time by gathering all the necessary supplies before beginning the process. The equipment you’ll require is listed below;

  1. Tripod Stand
  2. Adapter
  3. A Scalpel or Razor
  4. Screwdriver

1) Test the Collimation by Mounting Binoculars on Tripod Stand

See into your binoculars by mounting them on a tripod platform. Ensure that the binoculars are steady in one place. Using a tripod and adapter was to stabilize the binoculars so that the vision would be stable.

Now concentrate on the object to examine the binoculars’ collimation. To learn about the collimation, the object should be at minimum one kilometer distant. This testing will demonstrate double vision error in binoculars. If you notice a dual image with a blurry patch, your binoculars have a double vision problem.

Be cautious about double-checking your binoculars to be sure they are not out of collimation. A double image consistently indicates a collimation problem with the binoculars.

2) Remove Plastic Covering

You’ve now established that your binoculars’ double vision problem and unbalanced components positioning exist. Each binocular’s body is constructed of plastic. With the use of a razor, remove the plastic covering. You can extend the plastic coating to the eyepiece.

Razor removal of the plastic might be challenging due to lens damage. Therefore, be extremely cautious when removing the binoculars’ plastic casing. In this way, you can fix double vision error binoculars.

3) Fine Adjustment Screws in Plastic Covering

Due to the clear plastic cover, it may be challenging to find the adjustable screws. In the previous action, you were told to remove the plastic covering. So, locate the adjustable screws before lifting the covering.

If you’re having trouble locating the adjustment screws, consider reading the binoculars’ user manual, which will give you a clear understanding of where they are. Each user manual includes instructions to take apart and reassemble a pair of binoculars.

Don’t worry if the user handbook for your binoculars has been lost. In this situation, the specific steps may be beneficial.

  1. Use Google to search
  2. Get another user manual from your manufacturer by contacting them.
  3. See if the user manual and schematic for the binoculars have been available on the manufacturer’s official website.

 It won’t be as challenging to locate the adjustment screws as is typically thought. Your user adjustment screws might be found in a variety of places.

4) Adjust the Horizontal & Vertical Screws

The primary step to fixing the double vision problem in binoculars is tightening the screws. Always begin screwing from horizontal bolts. Take that into consideration. Make sure to avoid hard turning or twisting when you turn each of the two flat screws by an eighth of a turn. Care must be taken when depending on the bolts. Excessive turning and twisting can harm the binoculars’ ability to focus.

Adjust the Horizontal & Vertical Screws

 To ensure that alignments are at their best, vertical screws must turn in the same direction. Each time a screw is bent or twisted, there needs to be a little pause or break. Make sure to check the focus to see if it is improving or not after each turn. 

A much worse watching experience may result from a mismatch in the vertical and horizontal screw adjustments. The screwing extent should be the same for horizontal and vertical screws.

5) Tightening the Screws

It’s time to tighten the screws gradually after making the necessary adjustments to the horizontal and vertical screws. You should draw from the flat screws first because they are more challenging to align than the vertical screws. The horizontal screw should be tightened until the two images are roughly halfway apart.

 You should stop screwing when you realize that the images are not coming any closer because it means the image has reached its final quality. The horizontal screws must be tight using the same procedure to ensure that the photos get closer. Don’t tighten too firmly; do it softly while taking note of the image’s proportions and quality.

6) Refocus Lens and See Results

When you’ve completed screwing and tightening everything, refocus the lens and use your binoculars. After refocusing the lens, the image will appear clean, and your binoculars won’t have any more double vision. Retest the collimation to see if all of the optical component alignment is now fixed. You’ll see that the first collimation issue has been resolved. 

Binoculars Out of Alignment

When shopping for binoculars, it’s essential to remember that binoculars with a shorter eye relief may be more challenging to use if you wear glasses. If you wear glasses, look for binoculars with an adjustable eyecup that will allow you to position your eyes correctly. You may also want to consider binoculars with a wide field of view to take in as much of the scene as possible.

Binoculars that are out of alignment can cause several problems, including double vision, fuzzy images, and eyestrain. It’s critical to have your binoculars examined by a specialist if you discover any of these problems. Most binocular manufacturers offer a warranty or repair service, so be sure to take advantage of these if your binoculars need adjustment.

Binocular Focus Problems

Binocular focus problems can arise from several factors, including binocular alignment, the unequal refractive error between the two eyes, and incorrect eyepiece placement. Often, these problems can correct by making adjustments to the binoculars themselves. However, it could be essential to see a mechanic if the problem continues.

How to Fix Double Vision in Bushnell Binoculars?

If you’re having trouble with double vision in your Bushnell binoculars, there are a few things you can try to fix the issue. 

  • First, check that the binoculars are correctly aligned. You can modify them by using bolts on the binocular frames if they aren’t.
  • The refractive error setting may need to change if it doesn’t work. The binoculars’ right arm has a knob often turned to do this.
  • Finally, if all else fails, you can try using masking tape or other adhesive to cover one of the lenses. This will block some light and help reduce the double vision effect.

How to Disassemble Bushnell Binoculars?

If you need to disassemble your Bushnell binoculars for any reason, follow these steps. 

  • First, remove the binoculars from their case. 
  • Next, unscrew the two screws that secure the eyepiece housing to the main body of the binoculars. 
  • Next, unscrew the four screws that secure the objective lens housing to the main body of the binoculars.
  • Remove the objective lens housing and set it aside. 
  • Finally, unscrew the two screws that secure the focusing knob assembly to the main body of the binoculars. The concentrating knob component should remove and put aside. You should now have dismantled your binoculars entirely.

How to Fix Collimation in Binoculars?

If you notice that your binoculars are not providing a clear, single image, then it’s likely that they need to collimate. This means aligning the optics so that they are correctly focusing. It’s a relatively straightforward technique that may conduct at home with only a few pieces of equipment.

  • First, take a close look at the eyepieces of your binoculars and ensure they align with each other. If they are not, you will need to adjust the screws on the barrels until they are aligned.
  • Next, look through the binoculars and see if the images appear fused. It would help if you diverted the attention to what they are when they’re not.
  • Finally, take a look at the binoculars and see if the images appear to be parallel. You must modify the hybrid optical distance if necessary to make them align if they are not.

Once you have made all these adjustments, your binoculars should be correctly collimated and provide you with a clear, single image.

Leave a Comment