The invention relates to a method of manufacturing a microprojector for a projection display, wherein the microprojector comprises a support on which a projector lens array with a plurality of projector lenses is arranged, wherein on a side of the support facing away from the projector lens array, an object structure array with a plurality of e.g. identical object structures is arranged, wherein at least one projector lens is associated with one object structure such that the projections of the object structures superpose through the projector lenses to form a full image, wherein e.g. the distance between a projector lens and the associated object structures corresponds to the focal length of the respective projector lens, wherein on the object structure array, a condenser lens array is arranged such that in case of an illumination of the condenser lens array, a Köhler illumination of the object structures or projector lens associated with the respective condenser lenses is permitted.

A doorbell system may project an illumination on a surface. The doorbell may include a housing, a button, a camera, a microphone, a speaker, a motion detector, and a light source. In some embodiments, the doorbell includes at least one lens coupled to a bottom surface of the housing adjacent the light source. The at least one lens may be configured to allow light from the light source to pass through the at least one lens such that when the electronic doorbell is attached to a building the light source projects an illumination onto a ground surface in front of the doorbell.

A meta projector includes an edge emitting device configured to emit light through a side surface thereof, a meta-structure layer spaced apart from the upper surface of the edge emitting device that includes a plurality of nanostructures having a sub-wavelength shape dimension smaller than a wavelength of the light emitted from the edge emitting device, and a path changing member configured to change a path of the light emitted from the edge emitting device so as to direct the path toward the meta-structure layer. The meta projector may thus be configured to emit a light pattern of structured light, based on directing the light emitted from the edge emitting device through the meta-structure layer, while having a relatively compact device size.

The AC power source LED light device has moving image has the moving projected image or-and lighted patterns by (1) circuitry control LEDs on-off time for desired time or period, or (2) magnetic field force to making moving, or (3) motor or movement to make move or changing of (A) the image-carrier which has preferred film/piece has opening/printed piece/textures lens/treated lens/prism-lens/variable thickness lens/marked lens/sild/film/window/craving treated lens/laser craving/or marked piece of different material/or printed piece with arts, or (B) at least one of plurality of project refractive-lens in disc or holder, or (C) LED(s); to move or change position, or location. All big images or lighted patterns or lighted arts created from LED(s) emit light beam through image-carrier as 1.sup.st optics-lens then through the 2.sup.nd optics-lens as (i) project-cover or (ii) refractive-lens; those at least has refractive or-and protective function to make the tiny lighted image or patterns created by image-carrier or texture-lens to passing though refraction properties project-cover or refractive-lens or protective-lens to get the bigger size or colorful or steady or moving bigger size image or-and patterns with predetermined view angle and size to shown on (a) building, house, fence, wall for outdoor, or (b) ceiling, walls, floor for indoors application. The said moving image effect created by having at least one of the said 3 basic-parts project-assembly fit into or built-into or install to all kind of different light's housing construction of LED projection light for outdoor or-and indoor application(s) said LED light image or lighted patterns has moving, shaking, spin, rotating, vibration to get the desired moving or-and changing effect(s) and other unique features.

A light fixture may include a light source assembly configured to generate visible light radiation of different colours, an optical device configured to process at least a portion of the light radiation emitted by the light sources so as to form a light beam extending substantially along an optical axis, and at least one beam processing element located downstream of the optical device and configured to selectively intercept the light beam. The beam processing element may include at least one portion movable between several positions. The light fixture may include a control device configured to control the light source assembly either on the basis of the position of a movable portion of the beam processing element or on the basis of a parameter correlated to the position of the movable portion of the beam processing element.

A doorbell system may project an illumination on a surface. The doorbell may include a housing, a button, a camera, a microphone, a speaker, a motion detector, and a light source. In some embodiments, the doorbell includes at least one lens coupled to a bottom surface of the housing adjacent the light source. The at least one lens may be configured to allow light from the light source to pass through the at least one lens such that when the electronic doorbell is attached to a building the light source projects an illumination onto a ground surface in front of the doorbell.

A bracket includes a bracket body and an imaging module. The imaging module includes a first light source, a first pattern plate, a second light source, a second pattern plate and an imaging screen. The first light source projects a first illumination light. The first pattern plate having a first transmissive pattern is located on an optical path of the first illumination light, such that the first illumination light passing through the first transmissive pattern becomes a first pattern light. The second light source projects a second illumination light. The second pattern plate having a second transmissive pattern is located on an optical path of the second illumination light, such that the second illumination light passing through the second transmissive pattern becomes a second pattern light. The imaging screen receives the projection of the first and second pattern light.

A structured light projectors includes an illuminator configured to emit illumination light, a pattern mask configured to project structured light by partially transmitting the illumination light, and a lens configured to project the structured light, wherein the pattern mask includes a first lens distortion compensation region including a plurality of opaque first light shielding patterns having a first pattern width, respectively, and a second lens distortion compensation region surrounding the first lens distortion compensation region, the second lens distortion compensation region including a plurality of opaque second light shielding patterns having a second pattern width, respectively, wherein the second pattern width is less than the first pattern width.

A meta projector includes an edge emitting device configured to emit light through a side surface thereof, a meta-structure layer spaced apart from the upper surface of the edge emitting device that includes a plurality of nanostructures having a sub-wavelength shape dimension smaller than a wavelength of the light emitted from the edge emitting device, and a path changing member configured to change a path of the light emitted from the edge emitting device so as to direct the path toward the meta-structure layer. The meta projector may thus be configured to emit a light pattern of structured light, based on directing the light emitted from the edge emitting device through the meta-structure layer, while having a relatively compact device size.

Provided are a structured light projector that generates and projects structured light, and an electronic apparatus including the structured light projector. The structured light projector includes an illuminator configured to emit light, a pattern mask configured to form structured light by partially transmitting and partially blocking incident light from the illuminator based on a pattern of the pattern mask, and a lens configured to project the structured light. The illuminator includes a plurality of illumination areas respectively facing a plurality of areas of the pattern mask, wherein intensities of lights respectively emitted by the plurality of illumination areas are different from one other.