Samsung Electro-mechanics Co., Ltd.

Eui-Joong Kim

Sung-wook Kim

Haeng-Seok Yang

Oh-Byoung Kwon

Byoung-Ki Song

No-Jun Kwak

Chun-Gi Kim

Sung-Kyong Oh

Woo-Seok Choi

Koan-Young Oh

Sung-Ho Byun

Yong-San Shin

A spill light removing device includes a first blocker which is located perpendicularly to a stream route of light being irradiated from a light source and blocks a stream of light that is incident to the surface of the first blocker, except on a hole formed on the first blocker; a pass-through tunnel which is connected to the hole and is formed in the same direction to the stream route of light and allows the stream of the light to pass through; and a second blocker which has a irregularity pattern that is formed on a inner wall of the pass-through tunnel and reflects the light that is incident in the deviated direction of the stream route of light.

Spill light removing device

An optical pickup device including a dual wavelength light source module for emitting a selected one of two light beams having different wavelengths, a dual grating for splitting, into three beams, the selected light beam emitted from the dual wavelength light source, and a hologram for focusing the three beams of the selected light beam onto a photodetector having typical 8-section patterns such that the three beams of the selected light beam are focused onto the same spots as those of the other light beam, respectively.

Optical pickup device

Growing community of inventors

Suwon-si, South Korea

Eui-Joong Kim