LandOfFree - US Patents - Listing for Optical: systems and elements

Optical: systems and elements – Projection screen – Roll up screen

Portable screen assembly

Optical: systems and elements – Projection screen – Roll up screen

Portable screen assembly

Optical: systems and elements – Projection screen

Portable screen assembly for use with a projector

Optical: systems and elements – Projection screen – Roll up screen

Portable screen device

Optical: systems and elements – Projection screen – Roll up screen

Portable screen device

Optical: systems and elements – Projection screen – Roll up screen

Portable screen device

Optical: systems and elements – Projection screen – Roll up screen

Portable screen device with dual shaft structure

Optical: systems and elements – Protection from moisture or foreign particle

Portable self-cleaning mirror apparatus and method

Optical: systems and elements – Stereoscopic – Stereo-viewers

Portable stereoscopic viewing apparatus

Optical: systems and elements – Deflection using a moving element – Using a periodically moving element

Portable telephone and automobile system

Optical: systems and elements – Compound lens system – Telescope

Portable telescope mount with integral locator using...

Optical: systems and elements – Compound lens system – Telescope

Portable telescope mount with integral locator using...

Optical: systems and elements – Lens – With variable magnification

Portable terminal and drive method for photographic optical...

Optical: systems and elements – Optical aperture or tube – or transparent closure – Submerged object viewer

Portable underwater viewer with magnifying capabilities

Optical: systems and elements – Compound lens system – Telescope

Portable variable power zoom periscope

Optical: systems and elements – Stereoscopic – Stereo-viewers

Portable viewing apparatus

Optical: systems and elements – Binocular devices

Portable viewing apparatus having multiple interchargeable optic

Optical: systems and elements – Projection screen – Rear projection screen

Portable visual display device with a collapsible...

Optical: systems and elements – Single channel simultaneously to or from plural channels – By surface composed of lenticular elements

Portable wide-field optical system with microlenses and...