Prodisc Technology Inc.

Chih-Huang Wang

Chih-Neng Chang

Kuang-Hua Chang

Ke-Shu Chin

An-Hwa Yu

Yin-Tai Keng

Kai Hsiung Tsao

Guang-Yu Yu

Wen-Hu Wang

Jie-Hyi Chang

Shiau-Wu Lai

A light tunnel includes a first optical element, a second optical element, a third optical element and a fourth optical element. The first optical element has a first recess. The second optical element is disposed opposite to the first optical element and has a second recess. The third optical element connects the first optical element with the second optical element and has one end disposed in the first recess or the second recess. The fourth optical element is disposed opposite to the third optical element, connects the first optical element with the second optical element, and has one end disposed in the first recess or the second recess. Inner surfaces of the first to fourth optical elements form a light passage. A projection system is also disclosed.

Projection system and light tunnel thereof

A color wheel includes a motor, a covering element and a color filter. In this case, the motor has a housing and a motor body. The motor body has a central axis and the housing is set at one side of the motor body. The housing has a surface, which is opposite to the motor body. The housing and the motor body rotate around the central axis. The covering element covers one part of the housing. The color filter is set around the covering element.

Color wheel

A color wheel including a motor, a vibration damping element and a color filter. In this case, the motor has a housing and a motor body, and the housing is set at the central axis of the motor body. The vibrating damping element is set on the housing of the motor. The color filter is set on the housing of the motor, so that the vibrating damping element is positioned between the motor and the color filter. In addition, two other color wheels are provided.

A color wheel including a motor, a color filter and a washer. The color filter is set on the motor. The washer is set both on the motor and the color filter and the color filter is set between the washer and the motor. A recess is formed between a circumferential edge of an outer surface of the washer and the color filter. In addition, the invention also provides a washer of a color wheel.

Growing community of inventors

Shulin, Taiwan

Chih-Huang Wang