A camera device includes a plurality of lenses and an annular body having a fixed hole. The plurality of lenses and the annular body are arranged between an object side and an image side along an optical axis. The annular body includes an annular main body, an outer circumferential portion, and an inner circumferential portion, wherein the annular main body connects to the outer circumferential portion and the inner circumferential portion, and the inner circumferential portion is non-circular and surrounds the optical axis to form the fixed hole. The camera device satisfies: EFL/√{square root over (4A/π)}=(EFL/Dx+EFL/Dy)×K1; K1≤0.49, where EFL is an effective focal length of the camera device, A is an area of the fixed hole, K1 is a coefficient, Dx is a maximum dimension of the fixed hole through which the optical axis passes, and Dy is a minimum dimension of the fixed hole through which the optical axis passes.

An optical lens includes a first lens, a filter, and a shading sheet between the first lens and the filter. The first lens is configured to emit a first light with a wavelength in a first wavelength range and a second light in a second wavelength range. The filter is after the first lens, allowing the through transmission of the first light for imaging but reflecting the second light. The shading sheet absorbs at least a part of the second light. An imaging device and an electronic device using same are also provided.

An optical imaging lens including a first lens, a second lens, an aperture, a third lens and a fourth lens arranged in sequence from an object side to an image side along an optical axis. The optical imaging lens includes, from an object side to an image side, the first lens having negative refractive power and including an image-side surface being concave, the second lens having positive refractive power and including an image-side surface being convex, the third lens having refractive power and including an object-side surface being convex and the fourth lens having refractive power. The optical imaging lens includes a total of four lenses.

A lens effectively rejecting light from outside of a field of view of an image-capturing device can be assembled with other lenses in a lens barrel to form a lens module. The lens includes a central effective optical area and a connection area arranged surrounding the effective optical area. The connection area includes a side surface and adjacent first end surface, the side surface includes a first plane area and an inclined plane area. The inclined plane area extends from an end of the first plane area away from the first end surface toward the axis of the lens. The disclosure also provides the lens module having the above lens.

A camera module includes an imaging lens assembly and an image sensor, wherein the image sensor is located on an image side of the imaging lens assembly. The imaging lens assembly has an optical axis and includes a plastic lens barrel and a plurality of plastic lens elements, wherein the plastic lens elements are disposed in the plastic lens barrel. The plastic lens barrel includes an object-side outer surface, a lens barrel minimum opening, an object-side outer inclined surface and a reversing inclined surface. The object-side outer surface is a surface of the plastic lens barrel facing towards an object side being closest to the object side and is annular. The reversing inclined surface expands from the lens barrel minimum opening to the image side, wherein a connecting position of the reversing inclined surface and the object-side outer inclined surface forms the lens barrel minimum opening.

A spectrally shearing optical relay system, said relay system being comprised of two halves disposed symmetrically about an aperture stop S, wherein each half comprises a plurality of rotationally symmetric optical elements forming an objective and a com-pound prism comprised of a plurality of dispersing prisms. The compound prisms are located between the objectives and the aperture stop. An imaging device with such an optical relay system is also proposed.

The present disclosure provides an imaging optical system. In one aspect, the imaging optical system includes, among other things, a segmented light redirecting element configured to redirect the at least two portions of said electromagnetic radiation into substantially different directions and a segmented light separating element configured to substantially separate electromagnetic radiation into at least two portions.

A laser projector, a depth camera, and an electronic device are disclosed. The laser projector includes a substrate, a lens barrel, a light source, and a diffraction assembly. The lens barrel is arranged on the substrate, and the lens barrel and the substrate define an accommodating chamber; and the light source is arranged on the substrate and located in the accommodating chamber, the light source includes a plurality of light-emitting units, and a divergent angle of each of the plurality of light-emitting units is smaller than 20 degrees. The diffraction assembly is mounted on the lens barrel and located on an optical path of the light source.

Optical assemblies for use in virtual and augmented reality environments are described. The optical assemblies may include lenses, filter stacks, cameras, and image projecting devices. For example, the optical assemblies may include at least one lens, a first filter stack between the at least one lens and an image projecting device, a second filter stack between the first filter stack and the image projecting device, and a camera configured to capture images of an infrared reflection of light through the at least one lens.

An imaging lens assembly includes a plurality of optical elements, an optical axis passing through the optical elements is defined, and the optical elements include at least one mixing optical element. The mixing optical element includes a glass effective optical portion and a plastic outer peripheral portion. The optical axis passes through the glass effective optical portion. The plastic outer peripheral portion surrounds and physically contacts the glass effective optical portion, and forms an aperture hole. The plastic outer peripheral portion has at least three recess structures arranged and disposed along a circumference direction around the optical axis. The recess structures extend from one of the object side and the image side of the imaging lens assembly to the other thereof along a direction parallel to the optical axis. Each of the recess structures includes an outer surface, an inner surface and two side surfaces.