Hon Hai Precision Industry Co., Ltd.

I-Pen Chien

Kuang-Wei Lin

Hsin-Li Lin

Po-Yuan Lai

Juin-Hong Lin

Po-Wen Chan

Yu-Lun Ho

Yuan-Yu Lin

A prism monomer for use in a digital light processing projection device includes a plastic triangular prism having a hypotenuse surface and a glass sheet. The glass sheet has two opposite surfaces. One surface of the glass sheet is attached to the hypotenuse surface of the plastic triangular prism and the other surface of the glass sheet is formed with an anti-reflective coating.

Prism system and method for producing the same

A stereo projection optical system includes a polarization converter, a 2-way wheel, a retarder, and an image engine. The polarization converter is configured for converting an incident light into a polarized light which have single polarization. The 2-way wheel includes a reflective region and a transmissive region. The reflective region is configured for reflecting the polarized light and the transmissive region is configured for transmitting the polarized light. The retarder is positioned to receive an emergent light from one of the reflective region and the transmissive region. The image engine is positioned to receive light output of the 2-way wheel and the retarder and configured for emitting the light output comprising spatial information. The stereo projection optical systems provide viewers three-dimensional images formed by two alternative polarized light beams whose polarizations are perpendicular to each other utilizing the 2-way wheel.

Stereo projection optical system

A projector includes a light source assembly, a digital micro-mirror device, and a projection lens. The light source assembly includes a lamp and a color wheel positioned for receiving light generated by the lamp. The color wheel includes a motor having a contacting portion, a filter, a light-blocker, and a light-isolating sheet. The filter is mounted on the contacting portion of the motor and includes a first area and a second area. Light beams used for forming an image only pass through the first area. The light-blocker is disposed on the filter opposite to the motor. The light-isolating sheet is disposed on the first area and positioned between the filter and the motor and configured for isolating the light beams arrived on the second area.

Color wheel and optical device employing same

A stereo projection optical system includes a polarizing beam splitter, a 2-way wheel, a digital micro-mirror device, and a total internal reflection prism. The polarizing beam splitter is configured for emitting two light outputs. The 2-way wheel includes a reflective region and a transmissive region. The reflective region is configured for reflecting the light outputs and the transmissive region is configured for transmitting the light outputs. The digital micro-mirror device is configured for superimposing spatial information on the light outputs. The total internal reflection prism configured for coupling the light outputs of the 2-way wheel into the digital micro-mirror device and transmitting a light output of the digital micro-mirror device. The stereo projection optical systems provide viewers three-dimensional images formed by two alternative polarized light beams whose polarizations are perpendicular to each other utilizing the 2-way wheel.

A testing method is configured for testing parameters of a color wheel. The color wheel includes a color filter, which includes three sector-shaped filter segments and a motor for driving the filter segments of the color filter to rotate. The color filter is driven to rotate. Light is emitted toward the color filter of the color wheel, and reflected back by the color filter. Boundary impulses are generated according to changes in intensity of the light reflected back by the color filter. Based on relationships between the boundary impulses, central angles of the filter segments of the color wheel are calculated.

Testing method for testing color wheels

A testing system measures central angles of filter segments of a color wheel. The color wheel includes a color filter, which includes three sector-shaped filter segments and a motor for driving the filter segments to rotate. The testing system includes a sensor and a processor. The sensor emits light toward the color filter and receives light reflected back by the color filter, and generates an impulse signal according to intensity changes of the light reflected back by the color filter. The impulse signal includes a plurality of boundary impulses corresponding to boundaries formed between adjacent filter segments. The processor calculates central angles of the filter segments according to relationships between the boundary impulses.

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I-Pen Chien