122Views4Replies

Author Options:

what is the possibility of having liquid crystal shutter in a camera? Answered

i've seen many camera,
they all have mechanical shutter,
what is the possibility of having liquid crystal shutter in a camera,like in shutter glasses?

Discussions

0
None
iceng

Best Answer 3 years ago

Iv designed eFilm. Glass liquid is very slow and extremely temperature sensitive !

From freezing to full dispersion at car glove box at high temperatures.

Solid state cameras have no need for a shutter except for physical protection.

.

There is a large 2D array of pixels each is a photo sensors that receive a voltage charge and any light photon begins to discharge the pixel. A high speed shift register moves each pixel through an ADC and builds an LCD image... The pixels are four to a group, as two blue colors a red and a green.

I would use piezo mirrors, they certainly are fast enough.

0
None
Vyger

3 years ago

Shutter speeds are very short, up to 1/2000 of a second. Anything less than 1/30 will result in motion blur, for action shots 1/60 or 1/125 is considered the minimum. I do not believe liquid crystal can match those kinds of speeds.

0
None
-max-

3 years ago

I don't think liquid crystals will get "dark" enough to prevent film from exposing. Also, due to the polarization required, it will not be very optically efficient, so low light performance may suffer. It would be like a ND filter always installed. objects that are emitting/reflecting polarized light may also not look right because of the polarization. (perhaps the same as wearing passive 3D glasses or polerized sunglasses.)

0
None
-max--max-

Answer 3 years ago

Of course if you have a camera and shutter glasses you don't mind tampering with, it would probably be a fun experiment, to disable the shutter entirely, or set the camera up to leave it open indefinently, and hack the shutter glasses to be triggered in a simalar way in front of a small diameter lens.