Date: Fri, 12 Oct 2001 08:52:22 +0800 From: Raymond <[EMAIL PROTECTED]> Subject: Re: [LIB] Re: [LIBRETTO] Re: Nuts and bolts of impoving LCD
>>>I'm assuming that whatever the material is on the back side of the >>>illumination layer does NOT have a reflective layer of any kind behind it, >>>and that some light being generated by the fluorescent bulb(s?) is lost >>>through the back side of the illumination/diffusion layer. >> >>There are two sorts of reflectors. A specular reflector (mirror) preserves any >image in the light that falls on it. A diffuse reflector (paper)destroys any image >information. >> >>So, if there's not already one there, a reflecting layer of white paper would help. >A mirror-like sheet of mylar would help too, but might cause some ghosting. A lot >will depend on the distance between the LCD and the reflector plane. > >Couldn't something in between the two be used if ghosting does present a problem. I >would think that some silvered surface that diffuses the light might reflect >significantly more light than white paper would. Specular! Thats the word I was looking for. Bear in mind that a piece of white paper is quite readable in bright sunlight so going much brighter would be a waste of time. Even counting for the reduction in intensity due to the panel you'd still have quite a readable screen (imagine reading in bright sunlight with dark glasses on - its still quite easy). I do fail to see however how one could turn the Libby's screen into a reflective screen without destroying the function of the backlight unless one was somehow able to get the backlight to diffuse off the paper ... perhaps all this is just going round in circles ... hehe - Raymond ************************************************************** http://libretto.basiclink.com - Libretto mailing list http://libretto.basiclink.com/archive - Archives http://www.picante.com/~gtaylor/portable/faq.html - FAQ -------TO UNSUBSCRIBE------- Reply to any of the list messages. The reply mail should be addressed to: [EMAIL PROTECTED] - Then replace any text on the message's subject line: cmd:unsubscribe --------TO UNSUBSCRIBE DIGEST------ Do above but with this on subject line: cmd:unsubscribe digest **************************************************************
