A glazing unit is provided for producing an aesthetically pleasing effect. The glazing unit may include at least one polymer with a first structured surface to which a photonic structure is applied. The surface can reflect a first partial spectrum of incident electromagnetic radiation, and can transmit a second partial spectrum of incident electromagnetic radiation. A reflected proportion corresponds to a higher harmonic and is in a visible spectral range.

A light projecting apparatus is disclosed. The apparatus has a head with first and second light sources. There is a first reflector and a second reflector respectively disposed proximate to the first and second light sources. Each of the first and second reflectors has a concave reflective surface and a convex reflective surface configured to form light emitted by the respective light source into an illumination pattern having a central region having a substantially uniform distribution of luminous intensity and a taper region having a tapered luminous intensity.

An optical apparatus includes: a first optical system configured to guide light from a first area on a first plane to a second plane, the second plane being a pupil plane of the first optical system relative to the first plane; a second optical system disposed between the second plane and a third plane, the second plane being a pupil plane of the second optical system relative to the third plane; a first reflective member that is disposed on a first optical path at an entrance side of the first optical system and that has a first reflective surface that is swingable; and a second reflective member that is disposed on a second optical path between the first optical system and the second optical system and that has a second reflective surface that is swingable.

A laser light scanning apparatus includes: an optical system that generates parallel light from laser light emitted from a light source; an optical deflector that performs one-dimensional deflection on the parallel light from the optical system; and a diffractive optical element that diffracts deflected light from the optical deflector. The diffractive optical element is configured such that the diffracted light is focused along a predetermined axis that extends from the optical deflector toward the diffractive optical element, and the position at which the diffracted light is focused on the predetermined axis changes according to the incidence position of the deflected light.

High-efficiency line-forming optical systems and methods that employ a serrated aperture are disclosed. The line-forming optical system includes a laser source, a beam conditioning optical system, a first aperture device, and a relay optical system that includes a second aperture device having the serrated aperture. The serrated aperture is defined by opposing serrated blades configured to reduce intensity variations in a line image formed at an image plane as compared to using an aperture having straight-edged blades.

A light-emitting apparatus for facilitating the growth of one or more plants. The apparatus has a light-emitting layer comprising one or more light-emitting diodes for emitting light, and at least one optical-transformation layer having one or more optical-transformation units. Each optical-transformation unit has a metasurface for adjusting one or more parameters of the light emitted from the light-emitting layer. In some embodiments, the light-emitting apparatus may further have a polarization-control layer sandwiched between the light-emitting layer and the optical-transformation layer.

An imaging optical system includes a plurality of lenses, and the plurality of lenses includes a lens pair consisting of two lenses arranged near each other, in which radii of curvature of two surfaces arranged near each other is close to each other, and which satisfies predetermined conditional expressions.

A light projecting apparatus is disclosed. The apparatus has a head with first and second light sources. There is a first reflector and a second reflector respectively disposed proximate to the first and second light sources. Each of the first and second reflectors has a concave reflective surface and a convex reflective surface configured to form light emitted by the respective light source into an illumination pattern having a central region having a substantially uniform distribution of luminous intensity and a taper region having a tapered luminous intensity.

A rectangular wide-beam flashlight that utilizes a plurality of LEDs positioned in specifically formed optical elements to generate a uniform, rectangular beam pattern configured to substantially illuminate one or more walls in a room. The flashlight uses a radial array of LEDs that are disposed at or within optical elements or cavities configured to combine the output of the LEDs to form a substantially uniform and seamless, high-aspect ratio or wide rectangular beam for adequately illuminating one or more walls in a room.

A head-mounted display (HMD) includes an electronic display element, a microlens array, and an optics block. The electronic display element outputs image light via sub-pixels having different colors, the sub-pixels separated from each other by a dark space region. The sub-pixels have associated emission distributions that describe ranges of angles of light emitted from the plurality of sub-pixels. The microlens array includes microlenses that are each coupled to at least one corresponding sub-pixel, of the sub-pixels, where the microlenses concentrate the emission distributions and direct the emission distributions toward a target region. The optics block, which is located in the target region optically corrects the image light and directs the optically corrected image light from the microlens array to an exit pupil of the HMD corresponding to a location of an eye of a user of the HMD.