A lighting device according to the present technology includes: a light source unit that has a light emitting element; a spatial light phase modulator that generates a plurality of reproduced images at intervals on an image surface by performing spatial light phase modulation on incident light from the light source unit; and a projection unit that superimposes and projects the plurality of reproduced images on a projection surface via different projection lenses.

A novel high efficiency image projection system includes a beam-steering modulator, an amplitude modulator, and a controller. In a particular embodiment the controller generates beam-steering drive values from image data and uses the beam-steering drive values to drive the beam-steering modulator. Additionally, the controller utilizes the beam-steering drive values to generate a lightfield simulation of a lightfield projected onto the amplitude modulator by the beam-steering modulator. The controller utilizes the lightfield simulation to generate amplitude drive values for driving the amplitude modulator in order to project a high quality version of the image described by the image data.

A display device and a display control method are provided, the display device including: a reflective screen; and a display assembly comprising: a light source, configured to emit light beams; a light modulator provided in a direction of propagation of the light beams and a reflective display located downstream the light modulator in an optical path of the display device, the light modulator is configured to modulate the light beams alternately at two different deflection angles respectively such that the light beams travel through the light modulator and then are incident alternately on the reflective display in a first direction and a second direction, and the reflective display is configured to generate a first image in response to the light beam being incident on the reflective display in the first direction and to generate a second image in response to the light beam being incident on the reflective display in the second direction; and a relay optical device, which is located downstream the reflective display in the optical path of the display device and configured to project the light beam carried with the first image and the beam carried with the second image onto two positions on the reflective screen different from each other respectively in such way that virtual images of the first image and the second image are generated respectively at different distances from the reflective screen, at a side of reflective screen opposite to a side from which the virtual images are observed.

Projection systems and/or methods for efficient use of light by recycling a portion of the light energy for future use are disclosed. In one embodiment, a projection display system is disclosed comprising a light source; an integrating rod that receives light from said light source at a proximal end that comprise a reflective surface which may reflecting/recycle light down said integrating rod; of reflecting light down said integrating rod; a relay optical system, said relay optical system further comprising optical elements that are capable of moving the focal plane of the projector display system; and a modulator comprising at least one moveable mirror that reflects light received from the integrating rod in either a projection direction or a light recycling direction.

Aspects of the present invention relate to methods and systems for the see-through computer display systems with adjustable-zoom cameras positioned such that their respective capture fields-of-view at least partially overlap at a target distance.

In an example, the present invention provides an optical engine apparatus. The apparatus has a laser diode device, the laser diode device characterized by a wavelength ranging from 300 to 2000 nm or any variations thereof. In an example, the apparatus has a lens coupled to an output of the laser diode device and a scanning mirror device operably coupled to the laser diode device. In an example, the apparatus has an un-patterned phosphor plate coupled to the scanning mirror and configured with the laser device; and a spatial image formed on a portion of the un-patterned phosphor plate configured by a modulation of the laser and movement of the scanning mirror device.

A projection system includes a projector, a controller, and a reflecting mirror in order to project sufficiently bright display information in on a plurality of display areas without distortion. The projector includes a light source, a phase-modulation-type spatial light modulator element, and an optical system. The spatial light modulator element includes a display part displaying a pattern corresponding to the display information, and modulates and emits light radiated on the display part from the light source. The optical system projects modulated light emitted from the spatial light modulator element. The controller generates control conditions for controlling the light source and the spatial light modulator element, based on display conditions acquired from a host system, and controls the light source and the spatial light modulator element, based on the generated control conditions. The reflecting mirror reflects projected light from the projector toward the plurality of display areas.

A projector includes a projecting section configured to display an image, an image interface to which an image signal corresponding to a first image is input from a personal computer, an image processing section configured to generate a second image obtained by reducing visibility of the first image based on the image signal, and a first control section configured to, when a first condition is satisfied, cause the projecting section to display the second image and, when a second condition is satisfied, cause the projecting section to display the first image.

Projection systems and/or methods for efficient use of light by recycling a portion of the light energy for future use are disclosed. In one embodiment, a projection display system is disclosed comprising a light source; an integrating rod that receives light from said light source at a proximal end that comprise a reflective surface which may reflecting/recycle light down said integrating rod; of reflecting light down said integrating rod; a relay optical system, said relay optical system further comprising optical elements that are capable of moving the focal plane of the projector display system; and a modulator comprising at least one moveable mirror that reflects light received from the integrating rod in either a projection direction or a light recycling direction.

A projection system, a protection circuit and a current monitoring method of an image resolution enhancement device are provided. A light valve converts an illumination beam into an image beam. The image resolution enhancement device changes a transmission path of the image beam according to a driving current. The protection circuit detects the driving current. When the driving current is greater than or equal to a first current threshold, the protection circuit further compares the driving current with a second current threshold. When a duration time that the driving current is smaller than the second current threshold and greater than or equal to the first current threshold is greater than or equal to a time threshold, the protection circuit decreases the driving current to be smaller than the first current threshold to control the image resolution enhancement device. The projection lens converts the image beam into a projection beam.