An optical image capturing module and an alignment method and an observation method for an upper substrate and a lower substrate using the optical image capturing module are provided. The upper substrate and the lower substrate are disposed opposite. The alignment method includes the following steps of: emitting a light ray; filtering the light ray and dividing the light ray into a light ray at first wavelength and a light ray at second wavelength, whereby the light ray at first wavelength irradiates a pattern on the upper substrate, and the light ray at second wavelength irradiates a pattern on the lower substrate; reflecting the pattern on the upper substrate to an image capturing device; reflecting the pattern on the lower substrate to the image capturing device; and determining the positions of the pattern on the upper substrate and the pattern on the lower substrate on the image capturing device.

A video projection system and method for synchronizing images are provided. An image source provides a video signal with at least two streams of sequential images. A color switching device is operable to present fundamental colors and one or more non-fundamental colors at least once during each of a plurality of phases of the video signal. A light processing element controls projection of light with the two streams of sequential images sequentially through the presentation of the colors of each phase. An eye-switching adjustment element modifies a timing of the colors presented by aligning with the non-fundamental color, an unstable transition phase between different states of an eye-switching device to which the video signal is provided. The eye-switching adjustment element also modifies the video signal to deliver the images synchronously with the eye-switching device.

The invention provides a light generating system (1000) comprising a first light generating device (110), a second light generating device (120), a third light generating device (130), a luminescent material (200), and a control system (300), wherein: (A) the first light generating device (110) comprises a first laser light source and is configured to generate first device light (111) having a first device peak wavelength (.sub.1) and having a first spectral power distribution; wherein the first device peak wavelength (.sub.1) is selected from the wavelength range of 445-475 nm; (B) the second light generating device (120) comprises a second laser light source and is configured to generate second device light (121) having a second device peak wavelength (.sub.2) and having a second spectral power distribution, different from the first spectral power distribution; wherein the second device peak wavelength (.sub.2) is selected from the range of 420-450 nm or from the range of 470-490 nm; (C) the luminescent material (200) is excitable by the first device light (111) and the second device light (121); wherein the luminescent material (200) is configured to convert at least part of one or more of the first device light (111) and/or the second device light (121) into luminescent material light (201) having a centroid wavelength .sub.c,1 within the green-orange wavelength range; the luminescent material (200) has an absorbance band having a first absorbance E1 at the first device peak wavelength (.sub.1) and a second absorbance E2 at the second device peak wavelength (.sub.2), wherein E2/E1<1; (D) the third light generating device (110) comprises a third laser light source and is configured to generate third device light (111) having a third device peak wavelength (23) selected from the wavelength range of 600-650 nm; (E) |.sub.1.sub.2|20 nm; .sub.1 and .sub.2 are selected from the wavelength range of 420-490 nm; and |c,.sub.1.sub.3|20 nm; (F) the control system (300) is configured to control at least the first light generating device (110) and the second light generating device (120): (G) the light generating system (1000) is configured to provide in an operational mode white system light (1001).

Provided is a light source device where the number of optical components is reduced without lowering an efficiency for light utilization. The light source device includes an excitation light source which generates blue laser light as excitation light, a phosphor wheel including a phosphor which is excited by the excitation light from the excitation light source to generate yellow fluorescent light, and a mirror which guides the excitation light from the excitation light source to the phosphor wheel and transmits the fluorescent light from the phosphor wheel, wherein the mirror includes a first region which reflects the excitation light and transmits the fluorescent light and a second region which transmits the fluorescent light and diffused excitation light which is diffused and reflected in the phosphor. The yellow fluorescent light and the diffused excitation light passing through the mirror are mixed to generate white light.

Provided is a light source device where the number of optical components is reduced without lowering an efficiency for light utilization. The light source device includes an excitation light source which generates blue laser light as excitation light, a phosphor wheel including a phosphor which is excited by the excitation light from the excitation light source to generate yellow fluorescent light, and a mirror which guides the excitation light from the excitation light source to the phosphor wheel and transmits the fluorescent light from the phosphor wheel, wherein the mirror includes a first region which reflects the excitation light and transmits the fluorescent light and a second region which transmits the fluorescent light and diffused excitation light which is diffused and reflected in the phosphor. The yellow fluorescent light and the diffused excitation light passing through the mirror are mixed to generate white light.

A video controller for synchronizing presentation of a plurality of images is provided. A color switching device is operable to continually select a color out of a set consisting essentially of a plurality of fundamental colors. Each fundamental color is selected for presentation for a fixed time segment. A light processing element is operable to block and permit transmission of light in each color selected by the color switching device during each fixed time segment. The light includes at least two streams of sequential images. A synch signal generator is in control of the light processing element and is configured to time presentation of the light by the light processing element and of control signals to a viewing device of the display. The presentation of the light and of the control signals is timed in synchrony with the fixed time segments only during a transition state of the viewing device.

A video controller for synchronizing presentation of a plurality of images is provided. A color switching device is operable to continually select a color out of a set consisting essentially of a plurality of fundamental colors. Each fundamental color is selected for presentation for a fixed time segment. A light processing element is operable to block and permit transmission of light in each color selected by the color switching device during each fixed time segment. The light includes at least two streams of sequential images. A synch signal generator is in control of the light processing element and is configured to time presentation of the light by the light processing element and of control signals to a viewing device of the display. The presentation of the light and of the control signals is timed in synchrony with the fixed time segments only during a transition state of the viewing device.

Light emitted from a light source is irradiated to a reflective light modulator which modulates irradiated light to reflect based on image data and the light reflected by the light modulator is projected. A ratio of return light returning from the light modulator to the light source to the light irradiated to the light modulator is calculated based on the image data. A light amount of the light emitted from the light source is calculated by using the calculated ratio and a detection output of an optical sensor provided between the light source and the light modulator.

An electronic device comprises a light-emitting information receiving circuit and a color correction processing circuit. The light-emitting information receiving circuit is configured to be electrically connected to a color correction detection device to receive light-emitting information of an external flash detected by the color correction detection device. The color correction processing circuit is electrically connected to the light-emitting information receiving circuit to perform color correction processing according to the light-emitting information so as to generate color correction result information, the color correction result information being configured to be transmitted to the external flash to correct the light emission of the external flash. Moreover, provided is a color correction system of the external flash.

A color correction processing apparatus comprises a first communication circuit, a color correction processing circuit and a second communication circuit, wherein the first communication circuit is used for receiving digital quantity data of light-emission information of an external flash; the color correction processing circuit is electrically connected to the first communication circuit, so as to receive the digital quantity data of the light-emission information by means of the first communication circuit, and carries out color correction processing according to the digital quantity data of the light-emission information to generate color correction result information; and the second communication circuit is used for electrically connecting to the external flash, and the second communication circuit transmits the color correction result information to the external flash, so as to correct light emission of the external flash.