Hon Hai Precision Industry Co., Ltd.

Chia-Hung Kao

Chien-Wen Hsu

Huan-Liang Lo

Sheng-Chung Huang

Shih-Chieh Chou

A stereo projection optical system includes an image engine configured for providing light superimposed spatial information, a color selector positioned to receive a light output of the image engine, a transmission-type light modulator positioned to receive an emergent light of the color selector. The color selector is configured for selectively modifying the polarization of the light output according to the wavelength of the light output. The transmission-type light modulator alternates between a dark state and a bright state. From the foregoing, it will be apparent that the stereo projection optical system according to the present invention provides advantages in that its structure can be simplified with the reduction of its size by synthesizing lift and right image signals by displaying the stereoscopic image signal using a single projector.

Stereo projection optical system

A stereo projection optical system, includes a first polarizing beam splitter configured for separating a light input into a first polarized light component and a second polarized light component; a first transmission-type spatial light modulator configured for receiving the first polarized light component; a second transmission-type spatial light modulator configured for receiving the second polarized light component; a second polarizing beam splitter positioned to receive the light outputs of the first, second spatial light modulators. The first and second transmission-type spatial light modulators respectively generate two images formed by the first polarized light component and the second polarized light component with spatial information. When a viewer wears glasses that have two polarizing lenses whose polarization directions are perpendicular to each other, the viewer can perceive projected images as being three-dimensional.

A stereo projection optical system includes an image assimilator and a transmission-type light modulator positioned to receive the emergent light of the image assimilator. The image assimilator is configured for superimposing spatial information on the incident light beam and emitting one of a first polarized light component and a second polarized light component. The transmission-type light modulator alternates between a dark state and a bright state. The stereo projection optical systems provide viewers three-dimensional images formed by two alternative polarized lights whose polarizations are perpendicular relative to each other utilizing the transmission-type light modulators.

Stereo projection optical system using LCD to separate left and right eye images

A stereo projection optical system includes a first polarizing beam splitter, a transmission-type light modulator positioned to receive the first polarized light component from the first polarizing light splitter and an image assimilator positioned to receive an emergent light of the transmission-type light modulator. The image assimilator includes a second polarized light splitter and first, second reflective spatial light modulators. The stereo projection optical systems provide viewers three-dimensional images formed by two alternative polarization light beams whose polarizations are perpendicular to each other utilizing the transmission-type light modulators to form '3-D' images.

A projector includes a projecting lens configured for projecting an image, a controlling unit configured for analyzing a color temperature of the image, and an adjusting unit electrically connected to the controlling unit. The adjusting unit adjusts the color temperature of the image to be identical to a preset color temperature of the projector by changing transmittance of light through the adjusting unit.

Temperature adjusting apparatus for use in LCD projector and related method

A projection device includes a light source emitting light beams, a display element displaying images according to video signals, an adjustable collimator arranged between the light source and the display element, and a condensing lens unit arranged between the adjustable collimator and the display element. The adjustable collimator collimates the light beams of the light source to parallel beams. The condensing lens projects the parallel beams to the display element. A driving unit is used for adjusting a distance between the light source and the adjustable collimator. A lens adjusting unit is used for adjusting a focus of the adjustable collimator according to the distance between the light source and the adjustable collimator. The projection device can reduce light loss and achieve a projection image with high contrast and high brightness.

Projection device having a lens adjusting unit adjusting a focus of an adjustable collimator according to the distance between a light source and the adjustable collimator

A projecting system includes a light source for emitting light, a color temperature detecting device for detecting a color temperature value of the light emitted from the light source, a control device for storing a plurality of selectable pre-determined color temperature values therein for a user to select a pre-determined color temperature value, an adjusting device, and a light-modulating device. The adjusting device is disposed in a light path associated with the light source. The control device is configured for controlling the adjusting device to adjust transmittance of the light transmitted therethrough so as to adjust the color temperature value of the light to the selected pre-determined color temperature value. The light-modulating device modulates the light to create an image.

Growing community of inventors

Taipei Hsien, Taiwan

Chia-Hung Kao