Samsung Electronics Co., Ltd.

Ki Un Lee

Hyung Jin Kim

Jin Tae Kim

Hyun Jung Kim

Sang Ho Yoon

Chang Mo Lee

Seung Gyun Jung

Tetsuo Ariyoshi

Jin Pyo Hong

June Hyun Jang

Kyeong Ik Min

Won Hoe Koo

Dong Yeoul Lee

Choul Ho Lee

Yong Keun Jee

Sang Bin Song

Gi Hoon Kim

Joo Hun Han

Je Myung Park

Hyun Do Park

Dae Il Seok

Choong Gunn Park

Joung Wook Park

Jae Yeong Joo

Do Hyeon Lee

Bo Hyun Jo

A light emitting module is configured to provide substantially uniform lighting using a plurality of lighting sources. The light emitting module includes a diffusion plate disposed at a set distance from the light emitting module. A light source substrate has a substantially quadrilateral outer perimeter with at least one gap formed therein, and a plurality of light sources are disposed on the light source substrate according to a repeated quadrilateral pattern. A distance between adjacent light sources in the repeated quadrilateral pattern is selected based on the set distance h from the diffusion plate to the light emitting module, and on a greater of two diagonal distances x, y of the quadrilateral pattern. The diffusion plate diffuses light emitted by the light sources to provide substantially uniform light. Various other aspects of the light emitting module are additionally described.

Light emitting module and surface lighting device having the same

There is provided a light emitting diode (LED) lens for double-sided lighting, including a light diffusion agent diffused therein, the LED lens including a light receiving portion receiving light, a first light transmitting portion corresponding to the light receiving portion and transmitting a portion of the light in an upward direction therefrom, a reflective portion extended from the first light transmitting portion and reflecting a portion of the light, and a second light transmitting portion facing the first light transmitting portion and transmitting the light reflected by the reflective portion in a downward direction therefrom.

LED lens and LED module for two-sided lighting, and LED two-sided lighting apparatus using same

A lens is provided in an asymmetric shape including at least two curved surfaces with different light distribution angles. Therefore, uniformity ratio of illuminance and coefficient of utilization (CU) may be increased while reducing dazzle. When a lighting apparatus including the lens is used as a street light, light directly incident to a driver is minimized, thereby reducing dazzle to the driver. During a night drive, brightness at a far forward position of the driver may be increased. In addition, light emitted toward a street may be increased while reducing light emitted toward a sidewalk. As a result, uniformity ratio of illuminance and coefficient of utilization (CU) may be increased. Also, light pollution may be reduced.

Asymmetric type lens and street lamp including the same

There are provided an optical lens and a light source module, and a street lamp having the same. The optical lens includes a concave dome shaped inner surface formed to have a similarly-oval shaped lower surface, and formed to include a plurality of light incident surfaces formed to be stepped along the inner surface thereof and stepped surfaces connecting the plurality of light incident surfaces to one another; and an outer surface formed to surround the inner surface.

Optical lens and light source module, and street lamp having the same

Growing community of inventors

Suwon-si, South Korea

Ki Un Lee