A display system includes a display screen, a light source to generate a light beam to be modulated in accordance with image data, and a beam scanning module to receive the light beams and to direct the light beam onto an associated display region of the display screen. The beam scanning module includes a resonant scanning mirror configured to scan the light beam along a first scanning direction across the associated display region, and a polygon scanning mirror to scan the light beam along a second scanning direction across the associated display region.

A scanning light imaging device for continuously pseudo randomly scanning patterns of light in a beam onto a remote surface to achieve spatio-temporal super resolution for finding remotely located objects. The scanning light imaging device employs a scanner to project image beams of visible or non-visible light and/or tracer beams of non-visible light onto a remote surface or remote object to detect reflections. The device employs a light detector to sense at least the reflections of light from one or more of the image beams or the tracer beams incident on the remote surface or remote object. The device employs the sensed reflections of light beams to predict the trajectory of subsequent scanned beams in a pseudo random pattern and determine up to a six degrees of freedom position for the remote surface or remote object.

A scanning light imaging device for continuously pseudo randomly scanning patterns of light in a beam onto a remote surface to achieve spatio-temporal super resolution for finding remotely located objects. The scanning light imaging device employs a scanner to project image beams of visible or non-visible light and/or tracer beams of non-visible light onto a remote surface or remote object to detect reflections. The device employs a light detector to sense at least the reflections of light from one or more of the image beams or the tracer beams incident on the remote surface or remote object. The device employs the sensed reflections of light beams to predict the trajectory of subsequent scanned beams in a pseudo random pattern and determine up to a six degrees of freedom position for the remote surface or remote object.

A projector controller includes an object detector and control electronics, and is configured to protect audience members from intense light imposing an exclusion zone in front of a projector. The object detector is configured to optically sense a presence of an object in a detection region beneath the exclusion zone and above the audience members. The control electronics is configured to control the projector when the object detector indicates the presence of the object in the detection region. A method for protecting audience members from intense light imposing an exclusion zone in front of an output of a projector includes: (i) optically sensing a presence of an object in a detection region between the exclusion zone and the audience members, and (ii) controlling the projector when the presence of the object is sensed in the detection region.

A laser light source for producing incoherent laser beams, in particular for speckle-free imaging and/or projection, with at least two different wavelengths, preferably with three different wavelengths, includes: at least two optical devices, in particular at least two optical parametric oscillators, which each have a nonlinear optical medium for respectively producing a signal beam and an idler beam, and a superposition device configured to respectively superpose either the signal beam or the idler beam of each of the at least two optical devices for producing an incoherent laser beam with the at least two different wavelengths. A laser projector for producing an image, in particular a speckle-free image, on a projection surface, can include such a laser light source.

An object is to provide an image projection system in which a size and weight of a head-mounted portion are reduced and binocular vision is enabled. The present technology provides an image projection system including an image projection apparatus and an image display light diffraction optical element separated from the image projection apparatus and arranged in front of each of the two eyes, and the image projection apparatus includes: a positional information acquisition unit that acquires three-dimensional positional information of the image display light diffraction optical element provided in front of each of two eyes; an image display light adjustment unit that adjusts projected image display light on the basis of the three-dimensional positional information acquired by the positional information acquisition unit; and one projection optical system that can project the image display light to a region covering the two eyes and projects, toward the image display light diffraction optical elements, the image display light adjusted by the image display light adjustment unit.

The disclosure relates to a device for providing a multi-colored light beam for a projector. The device comprises a first light source, a second light source, a waveguide element, a beam forming device and a structure element. The waveguide element forms a first waveguide for guiding light from the first light source, a second waveguide for guiding light from the second light source and a coupling out region for coupling light out of the first waveguide and the second waveguide. The beam forming device is designed to form the multi-colored light beam using the light coupled out of the coupling out region. The first light source, the second light source, the waveguide element and the beam forming device are arranged on the structure element.

A projection system includes: a projection device that includes a laser scanner and projects one or more drawings individually onto work spots in a work site; and an adjustment unit configured to adjust at least one of (i) a quantity of the one or more drawings to be simultaneously projected by the projection device or (ii) a setting parameter regarding a mode of projection performed by the projection device.

Provided are a method and an apparatus of optical module assembly, where the method includes: when an optical module to be aligned images, controlling an alignment mechanism clamping a lens to be assembled to move in a set direction by a set movement step; when the alignment mechanism moves each time, collecting, by an image acquisition device, light spots imaged by the optical module to be aligned sequentially, and selecting a light spot with a minimum size from the collected light spots; determining an optimal position of the alignment mechanism according to at least two light spots before the light spot with the minimum size and at least two light spots thereafter; and controlling the alignment mechanism to move to the optimal position to align the lens to be assembled.

Techniques are provided to re-arrange the placement of a photodiode within an illumination system to achieve improved characteristics and reduced form factor. An illumination system includes a laser assembly, a MEMS mirror system, a beam combiner, and a photodiode. The laser assembly includes RGB lasers, and the MEMS mirror system redirects laser light produced by the RGB lasers to illuminate pixels in an image frame. The beam combiner combines the laser light. The photodiode is provided to determine a power output of the laser assembly by receiving and measuring some of the laser light. The photodiode may be beneficially positioned before or after collimating optics and/or the beam combiner.