Inventor

EPSTEIN KENNETH A

US89 patents

⚠️ This page may combine multiple inventors who share the name “EPSTEIN KENNETH A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

EPSTEIN KENNETH A

3M INNOVATIVE PROPERTIES CO

Phosphor based illumination system having a light guide and an interference reflector

Optical element having programmed optical structures

Optical film with variable angle prisms

Light guide for use with backlit display

Light guide with extraction structures

Optical film with variable angle prisms

Illumination device

Illumination assembly and system

Frontlit display

Illumination assembly using circuitized strips

Lightguide having a directly secured reflector and method of making the same

Diffuse reflective articles

Direct-lit liquid crystal displays with laminated diffuser plates

Optical element for lateral light spreading in back-lit displays and system using same

Color mixing illumination light unit and system using same

Phosphor based illumination system having light guide and an interference reflector

Phosphor based illumination system having a plurality of light guides and an interference reflector

Phosphor based illumination system having a plurality of light guides and an interference reflector

Optical component with a structured element

LED array systems

Liquid crystal displays with laminated diffuser plates

Back-lit displays with high illumination uniformity

Structured transflectors for enhanced ambient and backlight operation of transmissive liquid crystal displays

Multiple lightguide backlight

Optical elements having programmed optical structures

Display apparatus with corrosion-resistant light directing film

Display apparatus with corrosion-resistant light directing film

Display apparatus with corrosion-resistant light directing film

Composite diffuser plates and direct-lit liquid crystal displays using same

Higher transmission light control film comprising a transmissive region and an absorptive region each having a different index of refraction

Antireflective OLED construction

Optical element for lateral light spreading in edge-lit displays and system using same

Back-lit displays with high illumination uniformity

LED emitter with radial prismatic light diverter

Phosphor based illumination system having a long pass reflector and method of making same

Phosphor based illumination system having a plurality of light guides and a display using same

Phosphor based illumination system having an interference reflector and a display

Phosphor based illumination system having a plurality of light guides and an interference reflector

Structured transflectors for enhanced ambient and backlight operation of transmissive liquid crystal displays

Back-lit displays with high illumination uniformity

MINNESOTA MINING & MFG

Front-lit liquid crystal display having brightness enhancing film with microridges which directs light through the display to a reflector

Line light source having light pipe with rectangular cross-section

Process for controlling layer spacing in mixtures of smectic liquid crystal compounds

EPSTEIN KENNETH A

LED array systems

Back-lit displays with high illumination uniformity

GAIDES GARY E

Higher transmission light control film

(unassigned)

Optical film with variable angle prisms

O'NEILL MARK B

Hollow backlight with structured films

LAMB DAVID J

Hybrid lightguide backlight

3M INNOVATIVE PROPERTIES COMPANY

High transmission light control film