The application discloses an optical imaging lens. The optical imaging lens sequentially includes from an object side to an image side along an optical axis: a first lens having a focal power; a diaphragm; a second lens having a focal power; a third lens having a focal power, and provided with an object-side surface and an image-side surface, the object-side surface is convex surface, the image-side surface is a concave surface; a fourth lens having a positive focal power, and provided with an object-side surface and an image-side surface, the object-side surface is a concave surface, the image-side surface is a convex surface; and a fifth lens having a negative focal power; at least one aspherical mirror surface is included in an object-side surface of the first lens to an image-side surface of the fifth lens; the optical imaging lens meets the following relational expressions: f/EPD<1.5, and 2 mm<ImgH*EPD/f<3 mm.

The optical device includes: a beam radiation unit configured to radiate light; a first aspheric lens unit including a first focal point, the first aspheric lens positioned on a light output side of the beam radiation unit such that the first focal point is formed at a light output surface of the beam radiation unit on the light output side of the beam radiation unit; and second aspheric lens units including second focal points, the second aspheric lens units positioned on the light output side of the beam radiation unit such that the second focal points are formed to overlap the first focus at the light output surface of the beam radiation unit.

An image capturing optical assembly includes, in order from an object side to an image side, a first lens group, a second lens group and a third lens group, wherein the first lens group includes a first lens element and a second lens element, the second lens group includes a third lens element, a fourth lens element and a fifth lens element, and the third lens group includes a sixth lens element, a seventh lens element and an eighth lens element. At least one surface of at least one of the lens elements of each lens group is aspheric. At least one surface of at least one of the lens elements includes at least one inflection point.

An image capturing optical assembly includes, in order from an object side to an image side, a first lens group, a second lens group and a third lens group, wherein the first lens group includes a first lens element and a second lens element, the second lens group includes a third lens element, a fourth lens element and a fifth lens element, and the third lens group includes a sixth lens element, a seventh lens element and an eighth lens element. At least one surface of at least one of the lens elements of each lens group is aspheric. At least one surface of at least one of the lens elements includes at least one inflection point.

An optical imaging system includes a first lens having an object-side surface that is convex; a second lens having a refractive power; a third lens having a refractive power; a fourth lens having a refractive power; a fifth lens having a refractive power and an object-side surface that is concave; and a sixth lens having a refractive power and an object-side surface that is concave, wherein the first lens through the sixth lens are sequentially disposed in numerical order from an object side of the optical imaging system toward an imaging plane, and the optical imaging system satisfies the conditional expressions 0.7<TL/f<1.0 and TL/2<f1, where TL is a distance from the object-side surface of the first lens to the imaging plane, f is an overall focal length of the optical imaging system, and f1 is a focal length of the first lens.

An electronic device is disclosed. The electronic device of the present disclosure includes a light emitting unit for providing image light, and a display unit for reflecting the image light and transmitting the reflected image light to eyes of a user. The display unit includes a lens unit and a reflective surface for reflecting the image light. The reflective surface is formed of a 3-dimensional curved surface having different curvatures in a first direction and in a second direction perpendicular to the first direction, thereby correcting astigmatism. An electronic device according to the present invention may be associated with an artificial intelligence module, robot, augmented reality (AR) device, virtual reality (VR) device, and device related to 5G services.

An electronic device is disclosed. The electronic device of the present disclosure includes a light emitting unit for providing image light, and a display unit for reflecting the image light and transmitting the reflected image light to eyes of a user. The display unit includes a lens unit and a reflective surface for reflecting the image light. The reflective surface is formed of a 3-dimensional curved surface having different curvatures in a first direction and in a second direction perpendicular to the first direction, thereby correcting astigmatism. An electronic device according to the present invention may be associated with an artificial intelligence module, robot, augmented reality (AR) device, virtual reality (VR) device, and device related to 5G services.

An asymmetrical linear lens directing light at a limited solid angle includes a first solid profile section being a right trapezoid having a short and longer base side and two side legs. A second solid profile section is a non-right trapezoid having a short and longer base side and two side legs. The longer base side of the first solid profile section and the shorter base side of the second solid profile section coincide. One of the two side legs of the first solid profile section and one of the two side legs of the second solid profile section lie on a straight line enclosing a first angle with the longer base side of the second solid profile section. The other side leg of the second solid profile section is angled outward in relation to the other side leg of the first solid profile section by a second angle.

An asymmetrical linear lens directing light at a limited solid angle includes a first solid profile section being a right trapezoid having a short and longer base side and two side legs. A second solid profile section is a non-right trapezoid having a short and longer base side and two side legs. The longer base side of the first solid profile section and the shorter base side of the second solid profile section coincide. One of the two side legs of the first solid profile section and one of the two side legs of the second solid profile section lie on a straight line enclosing a first angle with the longer base side of the second solid profile section. The other side leg of the second solid profile section is angled outward in relation to the other side leg of the first solid profile section by a second angle.

The present disclosure is directed to devices and/or systems of modifying the incoming light through spectacle lenses that utilise at least one auxiliary or regional optical element, to provide extension or elongation of the depth of focus for a myopic eye. The disclosure relates to methods of correcting myopia and controlling or reducing the rate of myopia progression utilising extension of the depth of focus provided by the at least one auxiliary or regional optical element configured within, or in conjunction, combination, or juxtaposition with spectacle lenses. This disclosure relates to the use of an axicon, a light sword element, or a peacock eye element within the regional optical element or a sub-lens. This disclosure also relates to the use of a plurality of axicons, light sword elements or peacock eye elements configured within, or in conjunction, combination, or juxtaposition with spectacle lenses.