Abstract: A lens assembly includes a first lens, a second lens, a third lens, a first reflective element, and a second reflective element. The first lens is with positive refractive power. The first reflective element includes a first surface, a second surface, and a third surface, wherein the first surface and the third lens are opposite to each other. The second reflective element includes a fourth surface, a fifth surface, and a sixth surface, wherein the fourth surface and the third surface are opposite to each other. The first lens, the second lens, the third lens, and the first reflective element are arranged in order from an object side along a first axis. The first reflective element and the second reflective element are arranged in order along a second axis. The second reflective element and an image plane are arranged in order along a third axis.

Abstract: A method and a wireless communication device of configuring a radio resource in satellite communication. The method includes: a first channel matrix gain and a first noise gain are calculated according to precoding information and a first channel matrix; a lookup table is obtained, and the lookup table includes mapping relationships among a modulation coding scheme, a spectral efficiency, and a required signal-to-noise ratio; a first power change for increasing a first spectral efficiency of a first baseband data stream of a first user equipment and a second power change for increasing a second spectral efficiency of a second baseband data stream of the first user equipment are calculated; and in response to the first power change being less than the second power change, a first modulation coding scheme corresponding to the first baseband data stream of the first user equipment is updated.

Abstract: A lens assembly includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a reflective element. The first lens is with refractive power and includes a concave surface facing an object side along an axis. The second lens is with refractive power and includes a convex surface facing the object side along the axis. The third, fourth, and fifth lenses are with refractive power. The reflective element includes a reflective surface. The first, second, third, fourth, and fifth lenses are arranged in order from the object side to an image side along the axis. The reflective element is disposed between the first lens and the fifth lens. The lens assembly satisfies: 2 mm<L<6 mm; wherein L is an interval from an object side surface of the first lens to the reflective surface along the axis.

Abstract: A lens assembly includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The first lens is a meniscus lens with positive refractive power and includes a convex surface facing an object side and a concave surface facing an image side. The second lens is a meniscus lens with negative refractive power and includes a convex surface facing the object side and a concave surface facing the image side. The third lens is with refractive power. The fourth lens is with refractive power. The fifth lens is with positive refractive power. The sixth lens is with refractive power. The first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens are arranged in order from the object side to the image side along an optical axis.

Abstract: A lens assembly includes a first lens, a second lens, a third lens, a first reflective element, and a second reflective element. The first lens is with positive refractive power. The first reflective element includes a first surface, a second surface, and a third surface, wherein the first surface and the third lens are opposite to each other. The second reflective element includes a fourth surface, a fifth surface, and a sixth surface, wherein the fourth surface and the third surface are opposite to each other. The first lens, the second lens, the third lens, and the first reflective element are arranged in order from an object side along a first axis. The first reflective element and the second reflective element are arranged in order along a second axis. The second reflective element and an image plane are arranged in order along a third axis.

Abstract: A lens assembly includes a first lens group, a second lens group, a third lens group, a fourth lens group, and a reflective element. The first lens group is with refractive power. The second lens group is with positive refractive power. The third lens group is with positive refractive power. The fourth lens group is with refractive power. The reflective element includes a reflective surface. A light from an object sequentially passes through the first lens group, the second lens group, the third lens group, and the fourth lens group to an image side along an axis. The reflective element is disposed between an object side and the image side along the axis. Intervals of the lens groups are changeable when the lens assembly zooms from a wide-angle end to a telephoto end.

Abstract: A lens device includes a lens module, an image forming unit and a light path turning module. The lens module includes one or plural lenses. The light path turning module is disposed between the lens module and the image forming unit. The light exiting from the lens module is reflected at least twice by the light path turning module.

Abstract: A lens assembly includes a first lens, a second lens, a third lens, and a fourth lens. The first lens is with positive refractive power and includes a concave surface facing an object side and a convex surface facing an image side. The second lens is with negative refractive power and includes a concave surface facing the object side. The third lens is with positive refractive power. The fourth lens is with refractive power and includes a concave surface facing the image side. The first lens, the second lens, the third lens, and the fourth lens are arranged in order from the object side to the image side along an optical axis. The lens assembly satisfies: TTL/f>1.2; wherein TTL is a total length of optical system of the lens assembly and f is an effective focal length of the lens assembly.

Abstract: A lens assembly includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, all of which are arranged in order from an object side to an image side along an optical axis. The first lens is with positive refractive power and includes a convex surface facing the object side. The second lens is with negative refractive power and includes a concave surface facing the image side. The third lens is with refractive power and includes a convex surface facing the image side. The fourth, fifth, and sixth lenses are with refractive power. The lens assembly satisfies: 2 mm<f5+f6<35 mm, wherein f5 is an effective focal length of the fifth lens and f6 is an effective focal length of the sixth lens.

Abstract: A lens assembly includes a lens body, a first lens, a second lens, a third lens and a fourth lens, wherein the lens body includes a lens barrel, and the first lens, the second lens, the third lens and the fourth lens are fixed in the lens body in order from an object side to an image side along an optical axis. The first lens is closest to the object side and includes an object side surface, the object side surface is protruded along the optical axis, the first lens further includes a first portion close to the object side and a second portion close to the image side, and a diameter of the first portion is smaller than a diameter of the second portion so that a step is formed between the first portion and the second portion.

Abstract: A lens assembly includes a first lens group, a second lens group, a third lens group, a fourth lens group, and a reflective element. The first lens group is with refractive power. The second lens group is with positive refractive power. The third lens group is with positive refractive power. The fourth lens group is with refractive power. The reflective element includes a reflective surface. A light from an object sequentially passes through the first lens group, the second lens group, the third lens group, and the fourth lens group to an image side along an axis. The reflective element is disposed between an object side and the image side along the axis. Intervals of the lens groups are changeable when the lens assembly zooms from a wide-angle end to a telephoto end.

Abstract: A lens assembly includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens, all of which are arranged in order from an object side to an image side along an optical axis. The first lens is with positive refractive power and includes a convex surface facing the object side. The second lens is with refractive power. The third lens is with negative refractive power. The fourth lens is with positive refractive power and includes a convex surface facing the image side. The fifth lens is with negative refractive power and includes a concave surface facing the image side. The lens assembly satisfies: 1.5<f/D1<3.5; wherein f is an effective focal length of the lens assembly and Di is an effective optical diameter of the first lens.

Abstract: A lens assembly includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a reflective element. The first lens is with refractive power and includes a concave surface facing an object side along an axis. The second lens is with refractive power and includes a convex surface facing the object side along the axis. The third, fourth, and fifth lenses are with refractive power. The reflective element includes a reflective surface. The first, second, third, fourth, and fifth lenses are arranged in order from the object side to an image side along the axis. The reflective element is disposed between the first lens and the fifth lens. The lens assembly satisfies: 2 mm<L<6 mm; wherein L is an interval from an object side surface of the first lens to the reflective surface along the axis.

Abstract: A lens device consists essentially of a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The first lens is with negative refractive power and includes a convex surface facing an object side and a concave surface facing an image side. The second lens is a biconcave lens with negative refractive power. The third lens is with positive refractive power. The fourth lens includes a concave surface facing the object side. The fifth lens is with refractive power and includes a convex surface facing the object side. The sixth lens is with refractive power. The seventh lens is with positive refractive power. The first, second, third, fourth, fifth, sixth, and seventh lenses are arranged in order from the object side to the image side along an optical axis. The third lens and the fourth lens are cemented.

Abstract: A lens assembly includes a first lens, a second lens, a third lens, and a fourth lens. The first lens is with positive refractive power and includes a concave surface facing an object side and a convex surface facing an image side. The second lens is with negative refractive power and includes a concave surface facing the object side. The third lens is with positive refractive power. The fourth lens is with refractive power and includes a concave surface facing the image side. The first lens, the second lens, the third lens, and the fourth lens are arranged in order from the object side to the image side along an optical axis. The lens assembly satisfies: TTL/f>1.2; wherein TTL is a total length of optical system of the lens assembly and f is an effective focal length of the lens assembly.

Abstract: A lens assembly comprises sequentially from an object side to an image side along an optical axis a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The first lens is with negative refractive power and includes a convex surface facing the object side and a concave surface facing the image side. The second lens is with refractive power. The third lens is a biconvex lens with positive refractive power. The fourth lens is with refractive power and includes a convex surface facing the image side. The fifth lens is a biconvex lens with positive refractive power. The sixth lens is with negative refractive power and includes a concave surface facing the object side. The seventh lens is a meniscus lens with refractive power.

Abstract: A lens assembly includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, all of which are arranged in order from an object side to an image side along an optical axis. The first lens is with positive refractive power and includes a convex surface facing the object side. The second lens is with negative refractive power and includes a concave surface facing the image side. The third lens is with refractive power and includes a convex surface facing the image side. The fourth, fifth, and sixth lenses are with refractive power. The lens assembly satisfies: 2 mm<f5+f6<35 mm, wherein f5 is an effective focal length of the fifth lens and f6 is an effective focal length of the sixth lens.

Abstract: A lens assembly includes a lens body, a first lens, a second lens, a third lens and a fourth lens, wherein the lens body includes a lens barrel, and the first lens, the second lens, the third lens and the fourth lens are fixed in the lens body in order from an object side to an image side along an optical axis. The first lens is closest to the object side and includes an object side surface, the object side surface is protruded along the optical axis, the first lens further includes a first portion close to the object side and a second portion close to the image side, and a diameter of the first portion is smaller than a diameter of the second portion so that a step is formed between the first portion and the second portion.

Abstract: A lens assembly includes a first lens, a second lens, a third lens, and a fourth lens, wherein the first lens, the second lens, the third lens, and the fourth lens are arranged in order from an object side to an image side along an optical axis. The first lens is with positive refractive power and includes a convex surface facing the object side. The second lens is with negative refractive power and includes a concave surface facing the image side. The third lens is with refractive power and includes a convex surface facing the image side. The fourth lens is with refractive power. The lens assembly satisfies: FOV?56°, wherein FOV is a field of view of the lens assembly.

Abstract: A lens assembly includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens, all of which are arranged in order from an object side to an image side along an optical axis. The first lens is with positive refractive power and includes a convex surface facing the object side. The second lens is with refractive power. The third lens is with negative refractive power. The fourth lens is with positive refractive power and includes a convex surface facing the image side. The fifth lens is with negative refractive power and includes a concave surface facing the image side. The lens assembly satisfies: 1.5<f/D1<3.5; wherein f is an effective focal length of the lens assembly and Di is an effective optical diameter of the first lens.