LandOfFree - US Patents - Listing for Optics: eye examining, vision testing and correcting

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Subjective type

Refraction device for the subjective determination of the spheri

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type

Refraction techniques using modified streak retinoscope assembly

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks

Refractive index gradient lens

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type

Refractive power measurement apparatus

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type

Refractive treatment device with slit illumination

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Subjective type

Refractively corrected, wavelength selective, transparent occlud

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Subjective type

Refractometer for measuring spherical refractive errors

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Folding

Refractometer for the automatic objective determination of the r

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type

Refractometry process and device for measuring the degree of ame

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Folding

Refractor cross-cylinder apparatus

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Subjective type

Refractor having simplified cylinder lens assembly

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Folding

Refractor optical system

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Subjective type

Refractor optical system

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – For interpupillary distance measuring or lens positioning

Refractor suspension system

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Subjective type

Refractor with optically encoded cylinder axis position

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type

Refractory power measuring device

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument

Regulating focus in accordance with relationship of features of

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Bridges

Reinforced nose bridge and eyeglasses utilizing same

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With moisture prevention or absorption

Relaxation sunglasses having absorbent element for retaining...