An image projector includes an image forming element that is illuminated by a light from a light source, a projection optical system that projects a light output from the image forming element, a shifter that shifts the projection optical system with respect to the image forming element so as to shift a projection position, a deforming part that deforms an image formed on the image forming element, and a corrector that corrects a shift direction with the shifter on the basis of a deformation state by the deforming part.

A projection system includes a projector and a light emitting device that emits detection light in a direction in response to a screen. The projector detects an operation to the screen based on detection light of the light emitting device by a position detection section and switches the light emitting device between an emission mode and a non-emission mode thereof in response to state of the projector.

An illumination system including first, second and third light sources, a splitting element and a wavelength conversion element is provided. The first light source emits a first light beam. The second light source emits a second light beam. The third light source emits a third light beam. The splitting element is disposed on transmission paths of the first, the second and the third light beams. The splitting element reflects the first and the third light beams, and allows the second light beam to pass through. During a first time period, the first light beam is transmitted to a first position and the second light beam is transmitted to a second position. During a second time period, the third light beam is transmitted to the first position and the second light beam is transmitted to the second position. Furthermore, a projection apparatus is also provided.

A desktop USB-charger related product has space to receive an AC power-wire, USB-charger wire, or another charging related wire(s). The USB-charger related product is arranged to be installed on a desk top at a hand-reachable distance from a user by attachment so that there is no need for the user to bend body or knee in order to charge a device using the charger. The USB-charger related product has at least one USB-port that can supply a desired output-current in the range of from 1.0 A to 12 A and 3.5 VDC to 8.5 VDC by converting input AC power ranging from 110 VAC to 250 VAC. The USB-charger product may also optional to incorporate at least one additional device such as an AC outlet, sensor, motion sensor, remote control, time display, LEDs, other lights, a power fail device, a smell device, an audio device, a video device.

A projector includes: an I/F unit to which an image signal is input; a display unit that displays an image based on the image signal input to the I/F unit; a shift device that changes a position of an image to be displayed by the display unit; a signal processing unit that outputs a driving signal to the shift device and drives the shift device; and a shift control unit that controls the driving signal output by the signal processing unit. The shift control unit changes an output timing of the driving signal to correspond to a change in a frequency of the image signal.

A projection apparatus configured to project a projection image based on image data through a projection optical system that includes a field curvature adjustment lens unit configured to adjust a field curvature in order to focus on a nonplanar projection surface includes a processor configured to generate the image data including information on a focus fixed position where a focus does not change on the projection surface in adjusting the field curvature.

This disclosure describes various modules that can provide ultra-precise and stable packaging for an optoelectronic device such as a light emitter or light detector. The modules include vertical alignment features that can be machined, as needed, during fabrication of the modules, to establish a precise distance between the optoelectronic device and an optical element or optical assembly disposed over the optoelectronic device.

Provided are a projector and a lens adjusting module. The projector includes a main body, a light source disposed on the main body and providing an illumination beam, a light valve disposed on the main body and converting the illumination beam into an image beam, a projection lens movably disposed on the main body in a moving direction and projecting the image beam, and the lens adjusting module. The lens adjusting module includes a driven member connected to the projection lens and having a limiting flange, a limiting structure connected to the main body, and a rotating member screwed to the driven member and rotating to drive the driven member and the projection lens to move in a moving direction. The limiting structure is adapted to stop the limiting flange to limit a movement range of the driven member in the moving direction.

A projector includes a lens, a first base, a lock member, a second base and a first fixing member. The lens includes at least one adjusting member. The first base is disposed with respect to the lens. The lock member is disposed on the at least one adjusting member. The second base is disposed with respect to the lock member. When the first fixing member fixes the second base to the first base, the second base pushes the lock member, such that the lock member forces the at least one adjusting member on the lens tightly.

A connection structure connects to an electronic device and a projection component that connects to the electronic device through the connection structure to project a target projection content from the electronic device. The projection component includes a transmission module, an output interface, a direction change mechanism, and a linkage apparatus. The transmission module receives the target projection content. The output interface outputs an initial light ray of the target projection content. The direction change mechanism directs the initial light ray as an output light ray in one of a plurality of output directions. The linkage apparatus is coupled to the connection structure and the direction change mechanism to drive the direction change mechanism to change the output direction of the output light ray from a first output direction to a second output direction in response to a variation in a relative arrangement between the projection component and the electronic device.