A light source apparatus includes a first light source unit including a first light emitting device, a second light source unit including second and third light emitting devices, a light beam conversion system, and a light ray combiner. The first, second, and third light emitting devices emit first, second, and third light beams, respectively. The combiner has first, second, and third areas which these light beams enter, respectively. One of the light beams is a specific light beam. The direction in which the second and third areas are arranged is a third direction. The conversion system converts the specific light beam such that the dimension of the specific light beam in the third direction at a stage in which the specific light beam enters the combiner is smaller than that at a stage in which the specific light beam exits the conversion system.

A projection display system and a control method of controlling a projection display device capable of preventing degradation of visibility or occurrence of a sense of discomfort at a boundary between respective projection areas due to dimming are provided. In a system including a plurality of projection display devices 100A to 100C that project image light onto a plurality of areas in one projection surface, each of the plurality of projection display devices includes a brightness detection unit 47b, and a first control unit 52 that controls a projection condition for the image light that is projected on the basis of detected brightness information, and a second control unit 53 performs control to cause a projection condition for the image light of the second projection display device 100B to match a projection condition determined by the first control unit 52 of the first projection display device 100A.

An imaging system is presented for imaging a region of interest. The system includes an imaging arrangement having diffraction limited resolution. The imaging arrangement includes a spatial light encoder scattering medium) which applies spatial encoding patterns to coherent light and provides encoded illuminations of the region of interest located behind the encoder to create encoded diffraction limited images on a detector array. A position controller is provided which sequentially provides relative displacements between the coherent light path and the region of interest, resulting in a plurality of M laterally displaced encoded illuminations in a region of interest plane, to displaced by δx (and/or δx) between them such that they are characterized by substantially constant appearances of the encoded structure of the coherent light field. This enables super-resolution reconstruction of an image of the region of interest from corresponding M image data pieces without prior knowledge about the encoding patterns.

A signal detection device of the present invention includes a first control unit configured to determine whether there are inputs of a plurality of external signals connected thereto, a second control unit configured to be activated after the first control unit is activated, a first input unit connected directly to the first control unit and configured to input a first external signal, which is one type of the plurality of external signals, and a second input unit connected to the first control unit via the second control unit and configured to input a second external signal, which is another type of the plurality of external signals, and the first control unit determines whether there is an input of the first external signal before the second control unit is activated and determines whether there is an input of the second external signal after the second control unit is activated.

Systems and methods for a multi-primary color system for display. A multi-primary color system increases the number of primary colors available in a color system and color system equipment. Increasing the number of primary colors reduces metameric errors from viewer to viewer. One embodiment of the multi-primary color system includes Red, Green, Blue, Cyan, Yellow, and Magenta primaries. The systems of the present invention maintain compatibility with existing color systems and equipment and provide systems for backwards compatibility with older color systems.

A projection device for projecting at least one image onto a projection surface is provided. According to the present disclosure, a control device of the projection device is designed, on the basis of an evaluation of at least one measured value of a measuring device of the projection device determined during a drive of a discharge lamp of the projection device with a current waveform to be checked, to check the current waveform in respect of its suitability for minimizing an electrode burn-back of a first electrode and a second electrode, and in the case of a positive check result, to retain the checked current waveform, and in the case of a negative check result, depending on a checked commutation vector characterizing the checked current waveform, to create, by means of a specifiable algorithm, a modified commutation vector that characterizes a modified current waveform.

Techniques and architectures involve operating an array of slide projectors having respective brightnesses controlled by a computer. Such an array of slide projectors may be arranged to project their respective images onto a surface so that the respective images substantially overlap with one another on the surface and produce an integrated image. By judicious selection of slides and by judicious control of the brightness of the respective slide projectors, such an integrated image may render a video or an appearance of motion or other dynamic effect.

A projection display system, including light emitting device, light splitting device, first, second and third light modulators. The light emitting device emits first light and second light in time sequence. The light splitting device splits the first and second light into first and second wavelength range light along first and second optical paths, respectively, and guides part of the second light along the first optical path. The first and second light modulators modulate the light along the first and second optical paths, respectively; the light modulated by the first and second light modulators is combined to obtain third light along third optical path. The third light modulator is in optical path between the light emitting device and the light splitting device and modulates the first and second light from the light emitting device; or the third light modulator is in the third optical path and modulates the third light.

Devices and methods are described herein that use a first solid figure element, a polarizing beam splitter, and a second solid figure element to reduce speckle in projected images. Specifically, laser light is generated and split into two portions having orthogonal polarizations. The first portion of laser light is internally reflected off at least three internal faces of the second solid figure element and is then spatially recombined with the second portion of laser light in the first solid figure element. The difference in path length followed by the two portions generates a temporal incoherence in the recombined laser light beam, and that temporal incoherence reduces speckle in the projected image.

An illumination system is adapted to provide an illumination light beam. The illumination system includes a light-source module and a light-shape adjustment module. The light-source module is adapted to emit a first light beam. The light-shape adjustment module is disposed on the transmission path of the first light beam and is adapted to adjust the light shape of the first light beam. The light-shape adjustment module includes a first light-diffusing element, a second light-diffusing element, and a first lens element. The first light beam sequentially passes through the first light-diffusing element, the first lens element, and the second light-diffusing element to form the illumination light beam. A projection device having the illumination system is also provided.