Himax Display, Inc.

Himax Technologies, Inc.

Chun-Min Chen

Teng-Kuei Wu

Ho-Chi Huang

Chia-Yu Hu

Wei Shen

A projection system including an illumination unit, a polarization conversion unit, a light valve, a projection lens, and a polarizing beam split (PBS) element is provided. The polarization conversion unit includes a V-shaped PBS element, a wave plate, and two reflective surfaces. The V-shaped PBS element includes a first PBS portion and a second PBS portion. The first PBS portion is adapted to be passed through by a first partial beam with a first polarization direction and reflect a second partial beam with a second polarization direction. The second PBS portion is adapted to be passed through by a third partial beam with the first polarization direction and reflect a fourth partial beam with the second polarization direction. The wave plate is disposed in the transmission paths of the first partial beam and the third partial beam. The reflective surfaces are located at opposite sides of the V-shaped PBS element.

Projection system having rotationally asymmetrical illumination unit for emitting light along optic axis

An LED package including a carrier, a LED chip, and a lens is provided. The LED chip is disposed on the carrier. The lens is disposed on the carrier and above the LED chip. A gap is formed between the LED chip and the lens. The lens has a first surface, a second surface, a protrusion, and at least one protruding ring. The first surface faces the LED chip. The second surface is opposite to the first surface. The protrusion is located at the first surface. The protruding ring is located at the first surface and surrounds the protrusion.

Light-emitting diode package

An optical system, adapted for providing an image beam, including a light source, a beam splitting/combining device, and a light valve is provided. The light source provides an illumination beam. The beam splitting/combining device includes a first polarizing beam splitter (PBS), a second PBS, a quarter wave plate (QWP), and a reflector. The first PBS reflects a first illumination beam of the illumination beam from the light source and the second illumination beam from the light source passes through the first PBS. The second illumination beam from the first PBS passes through the second PBS and the QWP, reflected by the reflector, passes through the QWP, and reflected by the second PBS. The light valve converts the first illumination beam from the first PBS and the second illumination beam reflected by the second PBS into the image beam.

Growing community of inventors

Tainan County, Taiwan

Chun-Min Chen