This idea is..just another taken from similar ideas gone before..nothing is new

With this the 2 reflectors are about the diameter size of the LCD (15 inch)

The idea is to not project the void but only the bestest rays..
So each transmits from only half...missing out the dead lamp spot..

Wouldn’t it be better to remove the two mirrors at each parabolic to allow both lamps to illuminated the entire LCD?

DJ

someone mentioned here an optical company making lenslet arrays for $55. two of them costs approx $110. It removes the void as well, provides constant illumination for the whole area of the LCD. having two HID lamps makes the design much more expensive.

Dont forget the xtra optics that go with the lenslets.
The lenslets are small...

Another this time a single para reflector with 2 mirrors that miss out the void...avoid the void

Of course for twice the output ...add another reflector and mirrors..
using 2 reflectors means the size of a reflector could be reduced by half

DAZZZ

The idea is to remove the void removing the mirrors is ok I guess as long as you face half of each reflector to each other..(essentially the same as having the mirrors though

Whats your thoughts about the result from something similar...

Here they are... fresneltech.com look at item #310, size: 8"x10" optimal for a 10"-12" project, w/o extra optics. colliminator fresnel, reflector and two of these diffusers between them.

bit small for the 15 inch panels...but a nice find though !
are you planning to build this idea ?
some good reading in that pdf

Heres a twin

check this out: 10.4" 720p gear I'll do 1080p but will check these lenslets.


.. and you still have the void. You may try with one lamp/reflector but let's the arc prependicular to the axis.

I wonder how that stacks up with carpow's HD panel and controller for price..the controller looks very similar

:offtopic:
carpow's gear is wuxga, it's wxga. carpow's gear can't do digital, this one even supports hdcp.

actually the 10.6 from carpow is the same rez and does dvi also...where did you see hdcp mentioned?

The void is still there but not projected, by arranging the placement of the FS mirrors to avoid projecting the void.

Trying the arc perpendicular has been tried you still get shadows/artifacts on screen.
The idea is to remove as much artifact while still collecting and using as much rays as possible

Of course the conventional way of not having to be concerned with artifacts/voids is to H-smogenise the light with some kind of light pipe/rod or with lenslet arrays.. for large panels they dont appear to exist...(to buy) which means only way to try that idea is again to DIY.

With small LCD panels (commercial size) the tolerances for a reflector/light engine are finer yet the optics to capture and use all the light is more straight forward and the components are smaller and can be bought to suit...

Scaling this up to illuminate a larger panel as efficiently has been the problem still is...

Still we wont give up !

that looks exactly like the 10.6 on here.. I don't see anything about hdcp