I was thinking of lenses used in cameras that change perspective and
focus, and I thought that some person would have easily built a pair
of glasses that similarly has customisable lenses that change
perspective. So the glasses wearer would see, when the focal length is
adjusted, things similar in apparent distance vs. things that appear
farther away from one another than they actually are. And it would be
useful for developing illustration skills so mangaka could become
better artists. But when I attempted to search for the existence of
such glasses, basically nothing. I only found "adjustable reading
glasses" manufactured cheaply. Nothing for use in art.

I was also interested in color changing glasses just like the
colorblind simulation glasses you sell. But it's for artistic use.

https://www.halfbakery.com/idea/Monochromatic_20Glasses

https://www.physicsforums.com/threads/glasses-which-enable-you-to-see-in-black-white.299017/
"In summary, a transparent material or coating or a combination of the
two (or something similar) would let you see through it and see things
around you in pure black and white. Any monochromatic filter would let
you see in monochrome, of course it would be black and whatever_color
rather than black and white. Magenta filters used to be popular for
this because they approximately averaged the peak response of film to
the response you eye."

I'm not 100% sure how black and white film works, but what I do know
is that it takes color and converts it to black and white. There's
also orthochromatic, panchromatic and blue sensitive film, possibly
other film types I'm not yet aware of. The only problem is how to make
a "black and white film-type" lens filter that is "real-time" and "is
temporary, not leaving a permanent imprint" on the lens. Even if it
was a double filter that began with magenta and the second filter
converted it to white and black, not purple and black like in the
original, it would be better than nothing.

Also, these two glasses may have practical applications besides art
use. Color filter/wavelength sensitivity adjustable glasses would be
useful for even completely colorblind people, and something like
hypercentric glasses, if possible in the conventional glasses shape,
could be useful for applications in law enforcement, intelligence
gathering, etc, because, well, they let you see behind objects! They
could let you see which coward criminal is hiding behind that wall!

If you can think of other "art glasses" besides the perspective and
color changing variants, let me know!

Regardless of whether you accept my proposal, reject it, or put it on
the back burner, I would appreciate it if you replied and let me know
your true feelings about the concept of "art-use glasses." In the
meantime, thank you.




This is an update to build on my unsolicited proposal.
I just found a video from YouTube I had in my private playlists, and it may or may not be an idea to build on. Namely, the idea of caustic lenses or "magic windows." A tiny "magic window" could act as a lens on a... paper covered lens back or something...

How do you make a "magic window" adjust in real-time to lighting conditions? Unless it's electronically based, what sort of advanced nanotechnology would you need?
https://www.youtube.com/watch?v=wk67eGXtbIw

This is not strictly relevant, but colorblindness counts as a form of vision limitation. This is a video about an echolocation helmet.
https://www.youtube.com/watch?v=PD3Y1l8XyUw

I'm probably going into unfamiliar territory for you, (computer game related science), but I also heard that raycasting is less computationally expensive than raytracing, raymarching, pathtracing, pathmarching, etc. When I test it on my computer, that seems to be the case. (Your Mileage May Vary on your computer.)
https://www.shadertoy.com/results?query=raycasting&sort=newest&filter=

I don't think blind people tend to be very rich, so "audio raycasting" might be a budget-friendly solution.
https://www.youtube.com/watch?v=LY9x_cVfp1Y

Why not have echolocation-based games for blind people, so they can play "Tom Clancy's Call of Battlefield Duty: Far Cry from a Counter Strike of Doom: Remastered and Enhanced Sequel to the Prequel: Echo-able Edition"?
https://www.reddit.com/r/Games/comments/77yyyj/video_gamesaudio_games_for_the_blind_are_there_any/
Anyways, if you respond with basically anything, it will send a small hit of dopamine chemicals rushing in my body. Thanks.