Inventor

LEE CHANG-HEE

KR149 patents

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

LEE CHANG-HEE

KOREA ADVANCED INST SCI & TECH

Wavelength-tunable light source and wavelength-division multiplexed transmission system using the source

Wavelength-tunable light source and wavelength-division multiplexed transmission system using the source

Low-cost WDM source with an incoherent light injected fabry-perot laser diode

Low-cost WDM source with an incoherent light injected Fabry-Perot laser diode

Method for decreasing and compensating the transmission loss at a wavelength-division-multiplexed passive optical network and an apparatus therefor

Multiplexing/demultiplexing apparatus for wavelength division multiplexed system and wavelength division multiplexed passive optical subscriber networks using the same apparatus

Apparatus and method for measuring optical signal-to-noise ratio

Wavelength-tunable light source and wavelength-division multiplexed transmission system using the source

Long-reach wavelength division multiplexing passive optical networks by using the position adjustment of broadband light source

Automatic retrieval of wavelength-division multiplexed ring networks

Optical network terminator and optical network connection method using it

Optical access network using wavelength-locked WDM optical source injected by incoherent light

4-port wavelength selective router

LG CHEMICAL LTD

Curved laminated glass and manufacturing method for curved laminated glass

Laminated glass and manufacturing method for laminated glass

Float bath system for manufacturing float glass and cooling method of the same

Method of manufacturing curved laminated glass and curved laminated glass

Laminated glass and method for manufacturing the same

Glass light guiding plate

SAMSUNG ELECTRONICS CO LTD

Cable manager system and computer therewith

Image photographing apparatus having photographic mode based on position of camera unit

Bi-Directional add/drop multiplexer and bidirectional add/drop amplifier module for wavelength interleaved bidirectional networks

Computer system using a card having an expansion edge

KOREA ADVANCED INST SCIENCE AN

Apparatus for measuring the wavelength, optical power and optical signal-to-noise ratio of each optical signal in wavelength-division multiplexing optical communication

Multicast-capable optical cross-connect with layered modularity

Simple bidirectional add/drop amplifier module based on a single multiplexer

Apparatus for monitoring optical path based on the identification of optical cross-connect input ports

NOVERA OPTICS INC

Light source capable of lasing that is wavelength locked by an injected light signal

Apparatuses and methods for automatic wavelength locking of an optical transmitter to the wavelength of an injected incoherent light signal

Dynamically tunable optical amplifier and fiber optic light source

Wavelength-division-multiplexing passive optical network utilizing fiber fault detectors and/or wavelength tracking components

LEE CHANG-HEE

Wavelength division multiplexing passive optical network for providing both of broadcasting service and communication service and central office used thereof

Shared high-intensity broadband light source for a wavelength-division multiple access passive optical network

Wavelength division multiplexed-passive optical network capable of high-speed transmission of an optical signal by using modulation format having high spectral efficiency

SAMSUNG DISPLAY CO LTD

Light emitting element, manufacturing method thereof, and composition including the same

Light emitting element and display device including a semiconductor core surrounded by protecting and insulating layers

CHAE GEE SUNG

Thin film patterning apparatus and method of fabricating color filter array substrate using the same

Apparatus for fabricating flat panel display device method of fabricating the same and method of fabricating flat panel display device using the same

LEE CHANG HEE

Low-cost WDM source with an incoherent light injected Fabry-Perot laser diode

KOREA ELECTRONICS TELECOMM

Burst mode optical receiver using two amplifiers having different bandwidth

SINGAMANENI SRIKANTH

Label-free detection of renal cancer

LG NORTEL CO LTD

Method and network architecture for upgrading legacy passive optical network to wavelength division multiplexing passive optical network based next-generation passive optical network

KIM YOUNG-MI

Quantum dot light emitting diode device and display device therewith

KIM JONG DUCK

Multi-stage power supply

KIM JUNG HUN

Data synchronization method and system between devices

KANG HO-CHEOL

Quantum dot light emitting element and method for manufacturing the same

SFC CO LTD

Organic light emitting diode of high efficiency

KOREA ATOMIC ENERGY RES

Apparatus for generating parallel beam with high flux

DOOSAN ENGINE CO LTD

Reducing agent pyrolysis system for selective catalytic reduction apparatus

HYUNDAI MOTOR CO LTD

Method and system for die compensation and restoration using high-velocity oxy-fuel thermal spray coating and plasma ion nitriding