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Ray Price

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Posted on Friday, August 30, 2002 - 9:55 pm:   Edit PostDelete PostView Post/Check IPPrint Post

It is possible to replace the optics in HMD systems with contact lenses? Could a microdisplay be viewed at close range (say 1 inch or less) using this technique? Granted it would probably be a very different shaped contact lense from a regular prescription, but it is possible?

Ray
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tj

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Posted on Friday, September 06, 2002 - 3:19 pm:   Edit PostDelete PostView Post/Check IPPrint Post

Interesting idea. I don't see why not, since contacts can be made to correct both myopia (nearsightedness) and hyperopia (farsightedness) and even astigmia (irregular radial visual symmetry). However, to anyone not acclimated to contacts, it would give new meaning to the concept of EYESTRAIN! 8-)
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Doc. Lloyd

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Posted on Saturday, September 07, 2002 - 12:27 pm:   Edit PostDelete PostView Post/Check IPPrint Post

This is a good idea that probable will not work. In order to focus at 1" you need a contact with a power of -40D. Regular contacts only go to -20D. You would need a custom RGP lens. I don't know if it is possible to make one in this power
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Ray Price

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Posted on Sunday, September 08, 2002 - 6:21 am:   Edit PostDelete PostView Post/Check IPPrint Post

Any idea how close a regular sighted person could focus with a -20D?

Regards

Ray
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lloyd

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Posted on Saturday, September 14, 2002 - 6:54 pm:   Edit PostDelete PostView Post/Check IPPrint Post

Hi,
I typed a "-" when it should have been"+". A +20 will focus at 5cm.
Lloyd
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Ray Price

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Posted on Tuesday, September 17, 2002 - 4:19 pm:   Edit PostDelete PostView Post/Check IPPrint Post

So, to confirm... a regular sighted person could wear a +20D lense and focus on an object at 5cm without eyestrain (ie, it would appear at a comfortable viewing distance?).

Ray
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Lloyd

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Posted on Thursday, September 26, 2002 - 2:18 pm:   Edit PostDelete PostView Post/Check IPPrint Post

Yes that is correct
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Anonymous

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Posted on Wednesday, December 25, 2002 - 12:26 pm:   Edit PostDelete PostView Post/Check IPPrint Post

Ray from where are you?
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Anonymous

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Posted on Monday, March 01, 2004 - 6:52 am:   Edit PostDelete PostView Post/Check IPPrint Post

Hi,

Have you guy's checked out http://www.contouroptics.com/info/features_benefits.shtml

They claim thier lens's are anatomically correct to the shape of the eye and they can give you a 40% wider (distortion-free) field of view than regular flat lens's.

Might be something to look into?!?

I posted this in another topic in the product section in the thread talking about increasing the FOV.


Great forum here!
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Anonymous

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Posted on Wednesday, July 20, 2005 - 7:49 pm:   Edit PostDelete PostView Post/Check IPPrint Post

We loved the site, really loved it!

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