Compact 180 deg fov HMD's still possible?

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WiredEarp
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Re: Compact 180 deg fov HMD's still possible?

Post by WiredEarp »

A little OT, but its interesting to see that 3d printing apparently is now a viable way of creating lenses, as in

http://www.luxexcel.com/

or

http://www.edmundoptics.com/products/se ... ed-optics/

If lenses can be done, I wonder if custom mirrors can also be created now using 3d printing type methods?

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3dpmaster
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Posts: 114
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Which stereoscopic 3D solution do you primarily use?: Head Mounted Display (HMD)

Re: Compact 180 deg fov HMD's still possible?

Post by 3dpmaster »

Subject: Compact 180 deg fov HMD's still possible?
WiredEarp wrote:A little OT, but its interesting to see that 3d printing apparently is now a viable way of creating lenses, as in

http://www.luxexcel.com/

or

http://www.edmundoptics.com/products/se ... ed-optics/

If lenses can be done, I wonder if custom mirrors can also be created now using 3d printing type methods?
Hello WiredEarp,

It is kind to send this information but I had just enough money to buy blocks of acrylic of 2 inches thick and other stuff like a powerfull router with the cutting tools. Hopefully, I could show the final result if the machine is ready to use. The machine that I've been using until now was extremely rude for fine machining and I could not have the proper optical result, there was too much vibration from this wooden machine. Wood is not so stable.

About Edmund-optics: I usually buy from EO but for custom build I have to pay the price! ... And if it is not the optics that you really want ...... :cry:

I'll keep it up to date
;)
Full immersive research:

HMD:
SONY HMZ-T1
FOV: 40° diagonal

HMD project:
FOV: >180°

Link: http://www.mtbs3d.com/phpBB/viewtopic.php?f=26&t=14332

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3dpmaster
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Posts: 114
Joined: Tue Sep 21, 2010 3:05 pm
Which stereoscopic 3D solution do you primarily use?: Head Mounted Display (HMD)

Re: Compact 180 deg fov HMD's still possible?

Post by 3dpmaster »

piecutter wrote:Very interesting. Seems we've been following a similar path, you and I. Only I began physically testing with Microvision laser projector, but found them too bright! And also added bulk that the original plan was meant to do away with, so now I'm back to using micro displays out of an HMZ. I'm looking into fixing the brightness problem by overdriving them and using a more efficient heatsink than the ones they came with, which shouldn't be to hard as the originals barely do anything. I'm actually 3D printing bezels to hold the displays and heatsinks now.
Also on the to do list, extensions for the ribbon cables (any input appreciated) and a more open source driver board, if possible. Going to need a little help figuring out that one, as I'm a few notches below EE status.
The long term plan is to have a proof of concept with this and then reiterate with the Sony 1080p displays of the same size. They're a bit more difficult to lay hands on as you can't just cheaply buy something off the shelf and pull them out of it, but I have a source that's willing if I pony up for more than I need. Maybe a group purchase if I can find enough interest.
Hope to hear something good from your latest grinding endeavor!
Thanks,

I'll keep it up to date
;)
Full immersive research:

HMD:
SONY HMZ-T1
FOV: 40° diagonal

HMD project:
FOV: >180°

Link: http://www.mtbs3d.com/phpBB/viewtopic.php?f=26&t=14332

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3dpmaster
Cross Eyed!
Posts: 114
Joined: Tue Sep 21, 2010 3:05 pm
Which stereoscopic 3D solution do you primarily use?: Head Mounted Display (HMD)

Re: Compact 180 deg fov HMD's still possible?

Post by 3dpmaster »

new link,

For the lenses, putting optical manifacturing to another level: https://www.mtbs3d.com/phpbb/viewtopic. ... 87#p165987
Full immersive research:

HMD:
SONY HMZ-T1
FOV: 40° diagonal

HMD project:
FOV: >180°

Link: http://www.mtbs3d.com/phpBB/viewtopic.php?f=26&t=14332

User avatar
3dpmaster
Cross Eyed!
Posts: 114
Joined: Tue Sep 21, 2010 3:05 pm
Which stereoscopic 3D solution do you primarily use?: Head Mounted Display (HMD)

Re: Compact 180 deg fov HMD's still possible?

Post by 3dpmaster »

I've tested my machine and it works very well. While spinning the cylindrical plexiglas blank, the Router index arm stays steady, although it took a long time per layer to feed a 200 mm lens (78,7 inch). I was able achive my first working monoscope which acts like a close-up telescope, focal point is only 25 cm (9.8 inch). The monoscope has 8 lenses in total. 5 large pmma lenses (homemade) and 3 small closeup filters (purchased). The fov of the monoscope is 145 degrees! and throws a sharp image from center to borders because of the intermediate image plane. The intermediate image plane is essential for better image quality. Bulky but it is first step before manufacturing smaller and wearable optics. Fitting this property onto a compact 180 deg hmd, it seems to be promising. Stay tuned.

Greetings
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Last edited by 3dpmaster on Fri Nov 22, 2019 2:41 pm, edited 1 time in total.
Full immersive research:

HMD:
SONY HMZ-T1
FOV: 40° diagonal

HMD project:
FOV: >180°

Link: http://www.mtbs3d.com/phpBB/viewtopic.php?f=26&t=14332

User avatar
3dpmaster
Cross Eyed!
Posts: 114
Joined: Tue Sep 21, 2010 3:05 pm
Which stereoscopic 3D solution do you primarily use?: Head Mounted Display (HMD)

Re: Compact 180 deg fov HMD's still possible?

Post by 3dpmaster »

145 deg fov second lens (eyepiece part)
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Full immersive research:

HMD:
SONY HMZ-T1
FOV: 40° diagonal

HMD project:
FOV: >180°

Link: http://www.mtbs3d.com/phpBB/viewtopic.php?f=26&t=14332

User avatar
Hannibalj2
Binocular Vision CONFIRMED!
Posts: 300
Joined: Sun May 26, 2013 2:45 pm
Which stereoscopic 3D solution do you primarily use?: Head Mounted Display (HMD)

Re: Compact 180 deg fov HMD's still possible?

Post by Hannibalj2 »

Just how big are those? They look huge!
Portal Dual 180+ HFOV HMD: http://www.mtbs3d.com/phpBB/viewtopic.php?f=26&t=18335

PORTAL DUAL VR, Downloads: http://hannibalj2.jimdo.com/

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3dpmaster
Cross Eyed!
Posts: 114
Joined: Tue Sep 21, 2010 3:05 pm
Which stereoscopic 3D solution do you primarily use?: Head Mounted Display (HMD)

Re: Compact 180 deg fov HMD's still possible?

Post by 3dpmaster »

Hi Hannibalj2,

The biggest lens is 7,8 inch (20 cm). It was used to test the precision of the machine and it's really a beauty. I cannot wait to go a step further (19,3 inch or 50 cm diameter). But the most essential task is to manufacture freeform optics, molds for curved mirrors etc. Without the machine I cannot make any optics needed for the ultimate compact 180 deg hmd. Fingers crossed.

Greetings

3dpmaster
Full immersive research:

HMD:
SONY HMZ-T1
FOV: 40° diagonal

HMD project:
FOV: >180°

Link: http://www.mtbs3d.com/phpBB/viewtopic.php?f=26&t=14332

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