DK2 adjustable focus lenses

Some people cannot use them though. Even if they wanted to. And there are disadvantages. For most people they are small or even non-existent. But not everyone is so lucky. That's why I'd still prefer to be able to just order appropriate optics for DK2/CK1 in some "VR accessory shop", if putting a set of lenses into every CK1 box would turn out to be too expensive/problematic.

I have worn contact lenses in the past. At first, they are very uncomfortable but you get used to it after a little while. Even so, your eyes can get dry and you need to use eye drops frequently. Overall they were a hassle, so I just use glasses these days.

I was thinking that maybe a Prime Macro DSLR lens would do the job. You mount the lens in reverse so that the front element lens faces the eye and the rear element lens is pointed at the monitor screen. Possibly if you use a set focus point and then close the aperture to something like f/16, it might increase the eye focus to do all A, B, and C lenses focus points while using a single B lens focusing point. A narrow aperture ring lens diaphragm setup might increase the focusing range at the compensation of a darker image. I never tried it though. I think the reverse DSLR lens setup would be light enough.
I think the current lens aperture is around a f/1 or less on a DK1.

I think what could be done for users that have astigmatism is to alter the digital signal to compensate for the oval shape of the eye. In my case when I look at a distant out of focus light source like a small led light or a street lamp the orb I see is oval egg shaped with the large part on top and the small part on the bottom on both eyes. On the left eye the egg shaped orb's left top is tilted roughly 10 degrees outward and the right eye's orb is tilted roughly 15 degrees outwards.
So if you where to take a digital image of a circle then warp the image to make it similar to an oval in that shape. Then take that warped image and warp it back into a circle, that will give the calculation to provide a compensated image.
I do feel that high resolution monitors will give the best results, ones that can go a little bit beyond what the human eye can see to keep the image clear.
However I'm concerned that the eyes may not merge the warped image correctly.

Here is the thing, macro lenses can cost as much as 10 DK2s.

Cyberreality,

Yes I've used eyeglasses with the Rift and ruined them. The A cup lenses scratched the heck out of my eyeglasses and they had to be replaced. Fortunately they were new and they got covered under warranty.

Also for us old geezers, who wear varilux or bifocal (or gasp trifocal) lenses, they are problematic since you only need and want the distance portion of your eyeglasses to see the Rift image clearly.

So when a user installs his prescription into the Rift, he should only use what he would need to see clearly at a distance. Not for reading.

It would be a huge mistake for Oculus to ignore prescription lens wearers in their CV1. How many computer geeks have you met that don't wear glasses? LOL.

I did some testing today with a Canon AE-1 standard 50mm prime lens 1:1.8 S.C.1 and my cell phone screen, it seems that the reverse DSLR lens will work as a all range focus lens setup, something to do with the 5 lens setup. I can tell because I can see the image clearly with and without my glasses without adjusting anything, something I cannot do with the DK1 at the moment. Give this a try yourself with other people who have different eye focuses. No aperture, focus, distance adjustments will be needed.
I haft to use a C lens without glasses or a B lens with glasses when using the DK1.

Best of all no warping of the image. That will reduce processor or rendering power. The area of view doesn't change that much when moving back and forward from the lens at close range.


Downside, I can only see roughly 1 inch of screen., narrowed area of view because of 1 inch lens size, weight is a factor.

I feel if you where to take the 5 lenses from a standard prime DSLR lens that has 2-4 inch diameter lenses and put it into a lightweight cylinder shell that it will fix the all range focusing problem for various eye focuses, so far its proven itself.

"ElectricMucus" wrote:
Here is the thing, macro lenses can cost as much as 10 DK2s.

Scratch the macro it is un-needed.
Standard prime DSLR lenses don't cost that much especially if you remove all the un-needed components. A 2 inch eye cylinder with 2 inch standard prime lens components should not cost to much and be compact.

Why can't they just include a detachable, thin wire frame/insert that is designed to attach to the inside of the oculus in such a way that, once fitted by my optician with prescription lenses, allows the rift to work perfectly without the need to wear glasses.

Is this happening? If not why not? It would cost me around £10-£20 for some custom prescription lenses for my DK2 (ordered 19/3) so I'd be more than happy to make that investment as would most consumers I believe. Am I missing something?

If DK2 doesn't come with something like this can I have some lenses made and glue them into the rift with silicone adhesive so I don't have to wear glasses under the rift?

I don't get what's the deal, but then I only have -1.0 diopters.
The burning suspicion I have it won't make much of a difference even if you are quite near sighted, since the DK2s angular resolution isn't high enough.

"ElectricMucus" wrote:
I don't get what's the deal, but then I only have -1.0 diopters.
The burning suspicion I have it won't make much of a difference even if you are quite near sighted, since the DK2s angular resolution isn't high enough.

Do you have the same vision on both eyes?

The problem is when your sight differs between the eyes, it's like you have a permanent rendering bug.

"rupy" wrote:

"ElectricMucus" wrote:
I don't get what's the deal, but then I only have -1.0 diopters.
The burning suspicion I have it won't make much of a difference even if you are quite near sighted, since the DK2s angular resolution isn't high enough.

Do you have the same vision on both eyes?

The problem is when your sight differs between the eyes, it's like you have a permanent rendering bug.

Yes, -1.0 for both eyes.

I fairly often lose one contact lens and when it happens it it's barely noticeable in day to day life, it's just a little less comfortable but preferable to running around without eyesight correction. I don't see an issue with DK2 here.

As angular resolution goes up the amount of different available lenses should simply go up.
Regular glasses and contact lenses come in 0.25 diopter increments, I would estimate to need 4320p resolution to have a benefit from that. So for DK2 2 diopter increments should suffice.
For CK1 perhaps 1 diopter increments, just to be on the safe side. It wouldn't hurt to go straight to the eye correction standard of 0.25 but I don't see how it would be necessary.