Programmable optical logic devices operable by measuring the rat

Projection apparatus and distance measurement method wherein...

Projection apparatus and method for activating a projection...

Projection device having a lens adjusting unit adjusting a...

Projection system having avirtual mask

Projection type image display apparatus having a projection...

Projection-type image display apparatus having a planar...

Projector having two image formation units for projecting a...

Protection from extraneous light for light guided vehicle

Protective light filter system for image intensifier

Protective shroud for thermal imaging camera mounted to...

Protective shutter

Providing current to compensate for spurious current while...

Proximity and ambient light monitor

Proximity focusing image intensifier tube with spacer shims

Proximity image intensifier

Proximity X-ray image intensifier tube

Pseudorandom assignment between elements of the image...

Pseudorandom assignment between elements of the image...

Pulse discriminator circuit