Could Sony add a liquid crystal circular polarising layer to the mirror?

Started Oct 9, 2012 | Discussions thread
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scotbot Senior Member • Posts: 1,192
Could Sony add a liquid crystal circular polarising layer to the mirror?
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I've been thinking about this a lot. Would it be possible to 'paint' a liquid crystal layer onto the mirror at manufacture so that the camera could have a built-in circular polarizing filter?

I believe liquid crystal compounds work by aligning themselves in a certain way when a charge is applied which polarizes the light passing through them, they appear dark because there is a fixed polarizing film on the glass and no light is transmitted then the two polarizations are not aligned.

If the alignment could be controlled in some way by the charge then it could be possible to control the angle of the crystals and therefore 'rotate' the polarizer. the crystals are randomly aligned when no charge is applied so there would be no polarization effect.

There would be loss of light when no polarization was used though, and the usual loss of light when it was.

If the filter can be created and controlled it should be easy to automate the effect in 'easy' mode to align the polariser for maximum contrast and saturation, along with a manual setting.

It sounds like the kind of innovative technology that Sony would introduce to the market...

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