I am interested in knowing your thoughts of using a LCD panel as a glorified grety scale neutral density filter........... crazy???? maybe but its for an application in my lab where I need to darken the illumination of a portion of an image field (mask out a portion of an illuminated field).
do you think I could make this work?????
do you think I could make this work?????
Sounds incredibly technically overkill.... SWEET! 🙂
And you just can't use a normal two-polarizer combination? Since an LCD panel polarizes light anyway, you're going to lose at least 40% of the light (depending on the panel, maybe more). It might be more accurate to use two polarizing sheets and turn them from parallel to perpendicular to each other. That should give you a range of about 44% to 94% opaquity (is that a word?)... but that's a rough guess.
Anyway, granted that you found a 32-bit color panel (doubt you could find a grayscale with that great of shading definition), you'd have 256 levels of shading. With polarizing sheets, you'd have an infinite range, but it would probably be harder to make the controller setup (what with rotating sheets and all).
Keep the wheels of imagination turning!
--Clint
And you just can't use a normal two-polarizer combination? Since an LCD panel polarizes light anyway, you're going to lose at least 40% of the light (depending on the panel, maybe more). It might be more accurate to use two polarizing sheets and turn them from parallel to perpendicular to each other. That should give you a range of about 44% to 94% opaquity (is that a word?)... but that's a rough guess.
Anyway, granted that you found a 32-bit color panel (doubt you could find a grayscale with that great of shading definition), you'd have 256 levels of shading. With polarizing sheets, you'd have an infinite range, but it would probably be harder to make the controller setup (what with rotating sheets and all).
Keep the wheels of imagination turning!
--Clint
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