公开(公告)号：US10051248B2

公开(公告)日：2018-08-14

申请号：US15314609

申请日：2015-05-30

Applicant: LG ELECTRONICS INC.

Inventor： Byungwoo Jeoung ,  Sangok Yeo

IPC: G03B21/20 ,  H04N9/31 ,  G02B26/00 ,  G02B27/28 ,  G02B5/30

Abstract: An optical device and an image projection apparatus including the same are disclosed. The optical device includes a laser diode for outputting a laser light having a predetermined wavelength, a polarization separator for transmitting a first polarized light of the laser light and reflecting a second polarized light of the laser light, a wheel including a wavelength conversion unit for converting a wavelength of the second polarized light of the laser light reflected by the polarization separator such that the second polarized light of the laser light corresponds to one selected from among a blue light, a green light, and a red light and a transmission unit for transmitting the other lights, a polarization converter for converting the light transmitted through the wheel into the first polarized light and outputting the converted first polarized light to the wheel, and an optical output unit for outputting the first polarized light from the polarization converter and the light converted in wavelength and reflected by the wheel. Consequently, it is possible to provide a compact optical device that is capable of achieving highly efficient light output.

公开(公告)号：US09809153B2

公开(公告)日：2017-11-07

申请号：US15249531

申请日：2016-08-29

Applicant: LG ELECTRONICS INC.

Inventor： Jun Park ,  Byungwoo Jeoung

IPC: B60Q1/08 ,  B60Q1/00 ,  G06K9/00 ,  B60R1/00 ,  G02B26/08 ,  F21S8/10 ,  F21Y115/30

CPC classification number: F21S41/143 ,  B60Q1/0023 ,  B60Q1/085 ,  B60Q2300/42 ,  B60R1/00 ,  B60R2300/8086 ,  F21S41/14 ,  F21S41/141 ,  F21S41/16 ,  F21S41/18 ,  F21S41/255 ,  F21S41/265 ,  F21S41/285 ,  F21S41/36 ,  F21S41/365 ,  F21S41/675 ,  F21Y2115/30 ,  G02B26/0833 ,  G06K9/00791

Abstract: A headlamp includes a light-emitting module that includes a condenser lens that defines an optical axis through a center of the condenser lens and that is configured to focus light incident on a rear surface of the condenser lens. The light-emitting module further includes a laser light source that is located behind the condenser lens and that is configured to generate light toward the condenser lens. The light-emitting module further includes a microelectromechanical system (MEMS) scanner that is located in front of the condenser lens, that is configured to reflect, toward the condenser lens, light generated by the laser light source, and that is configured to scan light generated by the laser light source by moving horizontally and vertically. The light-emitting module further includes a reflection unit that is located behind the condenser lens and that is configured to reflect light reflected by the MEMS scanner.

公开(公告)号：US09444217B2

公开(公告)日：2016-09-13

申请号：US14761218

申请日：2013-11-07

Applicant: LG ELECTRONICS INC.

Inventor： Byungwoo Jeoung ,  Yongwoo Bae ,  Sangok Yeo ,  Seunggyu Lee

IPC: H01S5/022 ,  F21V9/16 ,  F21V7/00 ,  H01S5/323 ,  F21K99/00 ,  F21V5/04 ,  F21Y101/02 ,  H01S5/024

CPC classification number: H01S5/02296 ,  F21K9/64 ,  F21V5/04 ,  F21V7/0008 ,  F21V7/0066 ,  F21V9/30 ,  F21Y2101/00 ,  F21Y2115/30 ,  H01S5/02208 ,  H01S5/02469 ,  H01S5/32341

Abstract: A laser diode includes a laser diode emitting light due to an electrical signal; a wavelength conversion plate for shifting the wavelength of the light emitted from the laser diode; a reflecting part for reflecting the light emitted from the laser diode towards the wavelength conversion plate; and a projecting part for emitting, in the forward direction, the light shifted by the wavelength conversion plate. The laser diode can provide a high-power but small-sized laser light source device, and a narrow emission angle can be achieved using the laser diode.

Abstract translation: 激光二极管包括由于电信号而发光的激光二极管; 用于偏移从激光二极管发射的光的波长的波长转换板; 用于将从激光二极管发射的光反射到波长转换板的反射部分; 以及用于沿正向发射由波长转换板偏移的光的突出部分。 激光二极管可以提供高功率但小尺寸的激光光源装置，并且可以使用激光二极管实现窄的发射角。