Question about Nikon Optics

Open Question

Have a pair of Jason Model 161F Commander 10x50 binoculars that have double vision when looking at the moon what could be the problem

Posted by on

  • Randy Day Feb 07, 2012

    Thanks for the advice

×

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
informatica
  • 1114 Answers

SOURCE: double vision

The distance between the centers of the eyepieces of your binocular must be the same as the distance between your pupils. This distance is adjusted as follows: 1. Focus on a distant object. 2. Pivot the two halves of your binocular farther or closer apart until you can see a single unobstructed, circular field of view. Make sure to focus on a distant object when you do this because when you focus on a close object you always see two slightly overlapping circular fields. Your binocular may have a scale on the top, between the eyepieces, to help you remember this setting.

Posted on Aug 04, 2007

Ad
  • 18 Answers

SOURCE: Binocular Double Vision

We can align yur binoculars for your for 25-30.00 plus 5.00 to ship back to you. Some units have handy set screws to make adjustments from outside the unit. Call me, wwwbinocularservice.com
Art

Posted on May 10, 2008

MrObvious
  • 115 Answers

SOURCE: double vision

take it into an outdoor shop and they can check the mirror alignment, seems that it may have "altered' itself

Posted on Jun 22, 2009

  • 112 Answers

SOURCE: My Nikon binoculars show two images

must have been dropped ...have to be realigned if you want i can supply estimate 15088331232 ...larry

Posted on Aug 13, 2009

Obertelli
  • 3006 Answers

SOURCE: double vision

The yoke which connects the eyepieces and keeps them aligned as the focus changes is damaged. If you can easily move one eyepiece back and forth with respect to the other then the yoke has broken, if not then it's bent, probably cracked and waiting to break.This is easily the most common fault on most binoculars, and it's always uneconomic to repair on budget brands such as Bushnell.

If bent, the yoke *might* be able to be straightened, but it will be weakened and the alignment afterwards will rarely be spot-on. If broken, then the yoke must be replaced professionally but the repair will cost more than replacing the binoculars with new. In any case, it's unlikely that Bushnell even list the spare part for it. The break cannot be simply glued: the contact area is too small to carry the loads it has to carry, and you also usually find that the yoke bent before breaking anyway so you then have all the same problems as you do with a bent yoke.

The fragile nature of the yoke is why binoculars must always be inserted into their case with the objective lenses facing down; this avoids shock loads on the delicate yoke assembly.

I hope that you've found my posting to be of use and in return ask only that you take a moment to rate my answer.

Posted on Feb 13, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Can I get the plastic piece with left handed threads that screws onto the eye piece for the adjustable eyecup to ride on.


Leupold Binoculars 10x50 ' eBay

www.ebay.com/bhp/leupold-binoculars-10x50
eBayLeupold 119193 BX-2 Acadia 10x50mm Roof Prism Binoculars Black ... LeupoldRogue 10x50 Binoculars Porro Prism Black 65555 ... Twist up eyecups. Amour ...

Sep 26, 2015 | Wind River Leupold 10x50 Mesa Binoculars -...

1 Answer

Need 1 rubber eye shield for swift ferret model 747




Regards, Tony

May 10, 2011 | Swift Kestrel 826 (10x50) Binocular

1 Answer

I have a pair of Plastimo military binoculars which have been fine up to now, but suddenly, despite being able to focus using the two eye piece controls, I cannot get anything other than a double image, no...


Hello - I never had Plastimo before but I have had a similar problem with double vision on a very similar looking pair of binoculars.
The eye piece movement just re-aligns eye focus differences , a double image usually means one of the lenses has moved inside the main tube. (usually from a knock/fall etc)
Can you rotate either one of the tubes ? On my pair I had to rotate anti-clockwide and found a prism inside that had slipped after a fall -
Close one eye and try to gauge which side is the best side -- Ray

Feb 05, 2011 | Plastimo Optics

1 Answer

Replacement battery (i.e. battery number) for my 10x50


The battery in my pair of FreeFocus Fieldvision 10x50 binoculars is a AG3 button cell. I cannot tell you more because the rest of the writing on it is in either Japanese of Chinese characters. I hope this helps

Apr 12, 2010 | Fieldvision 10 x 50 Binoculars

1 Answer

I have a Bushnell Instavision 10x50 WA. I have a double vision. How do I solve it. Please help


for this you will need to send the unit into their repair at 8500 marshall drive lenexa ks 66214 4-6 week turnaround and put your name address and telephone number inside the package. if there is a cost they will send an estimate.

Mar 23, 2010 | Bushnell 26-0400 Binocular

2 Answers

I have double vision with binoculars. When I look at jupiter for example, I see 2 as if the optics are not aligned.


Your question is listed under "Zhumell Oberwerk 45 25x100 Astronomy binoculars". If these are what you have then they're an extremely high end expensive specialist item and will need professional realignment. I'm assuming that if you do own a pair of these then you're knowledgeable enough to have done all you can to adjust them correctly.

I suspect that you have a regular pair of 10x50 or similar binoculars, with a centre focus wheel and hinges. If this is the case then try to wiggle one of the eyepieces back and forth: if you can easily move it and the other eyepiece remains steady then you have a broken hinge. This is a very common fault especially if your binos have been dropped or if they've been stored in their case upside down (i.e.standing on the eyepieces).

A broken hinge is normally a write-off as there is rarely sufficient area to us epoxy glue on and the metal used is not usually suited to being brazed. Even when the hinge can be repaired it's normally permanently misaligned.

Either resign yourself to using one half of your binoculars or buy a new pair. In the UK LIDL regularly sell a pair of Meade 10x50 binos of excellent quality for just over £10 and that's only a little more than a bottle of epoxy resin glue costs. You may be interested to know that one of the world's most successful supernova spotters does so in his back garden in the UK using just half a pair of old 7x50 binos.




Sep 16, 2009 | Zhumell Oberwerk 45 25x100mm Astronomy...

1 Answer

Is my bushnell insta vision 7x35 or 10x50- how do I tell ?


The first number is the magnification the second number is the size in millimeters of the objective (large lens) So if you measure the diameter of the front large lens that will give you the size. So a 10x50 means a magnifyng power of 10 and an objective of 50mm.
Now to find out the magnification if you don't know what it is. Measure the front lens. Then if you look through the eyepiece lens while holding it away from you you will see that there is in each a small circle of light. That it what is known as the exit pupil. It lines up with the pupil of your eyes when you have the binoculars pressed up against your eyes. Now measure the diameter of the exit pupil in millimeters. It will only be a small number.

To work out the magnification use this formula. Magnification = Objective size divided by the exit pupil.
So a 10x50 will look like this M = 50 divided by 5....therefore M =10 which is the magnification.

Both the 7x35 and 10x50 will have an exit pupil of 5mm. So if yours is one of these then all you need is the objective (large) lens size.

Aug 04, 2009 | Bushnell InstaVision Binocular Binocular

1 Answer

Double Vision Pentax 10x50 PCF III


If you have double vision it is out of collimation (alignment of the optical axis). You need to send this to the manufacturer for repair.

Jul 05, 2009 | Pentax PCFIII (10x50) Binocular

1 Answer

Repair of Celestron binos found in river


thought i answered this before but at my age who knows....the problem is water contains minerals that will eventyaully corrode the optics or at least the coatings.anyway if you want i can give you an esimate to repair....larry@reichinstruments.com

Nov 25, 2008 | Celestron Optics

1 Answer

Double vision


The distance between the centers of the eyepieces of your binocular must be the same as the distance between your pupils. This distance is adjusted as follows: 1. Focus on a distant object. 2. Pivot the two halves of your binocular farther or closer apart until you can see a single unobstructed, circular field of view. Make sure to focus on a distant object when you do this because when you focus on a close object you always see two slightly overlapping circular fields. Your binocular may have a scale on the top, between the eyepieces, to help you remember this setting.

Jul 03, 2007 | Bushnell Powerview - Compact 10 x 25...

Not finding what you are looking for?
Optics Logo

Related Topics:

355 people viewed this question

Ask a Question

Usually answered in minutes!

Top Nikon Optics Experts

kakima

Level 3 Expert

102366 Answers

Mark Campeau

Level 1 Expert

44 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Are you a Nikon Optic Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...