Abstract: A photographing lens includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens in order from an object side to an image side along an optical axis. The first lens is a meniscus lens with negative refractive power. The second lens is a lens with negative refractive power, in which an image-side surface of the second lens is concave. The third lens is a lens with positive refractive power, in which an image-side surface of the third lens is convex. The fourth lens is a lens with positive refractive power. The fifth lens is a lens with negative refractive power, in which an object-side surface of the fifth lens is concave. The photographing lens has an excellent image resolving ability.

Abstract: A wide-angle lens assembly includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens and a tenth lens arranged in order from an object side to an image side along an optical axis. The first lens has negative refractive power and includes a convex surface facing the object side and a concave surface facing the image side. The second lens has negative refractive power. The third lens has refractive power and includes a convex surface facing the image side. The fourth lens has positive refractive power and includes a convex surface facing the object side. The fifth lens has refractive power. The sixth lens has refractive power and includes a concave surface facing the object side. The seventh lens has positive refractive power. The eighth lens is a biconvex lens with positive refractive power. The ninth lens has negative refractive power. The tenth lens has refractive power and includes a convex surface facing the image side.

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

Abstract: A lens assembly includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens, wherein the first lens, the second lens, the third lens, the fourth lens, and the fifth 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 concave surface facing the image side. The second lens is with positive refractive power and includes a concave surface facing the object side. The third lens is with negative refractive power. The fourth lens is with positive refractive power. The fifth lens is with negative refractive power. The lens assembly satisfies: f3+f4>0 mm, wherein f3 is an effective focal length of the third lens and f4 is an effective focal length of the fourth lens.

Abstract: A wide-angle 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, and a sixth lens. The first lens is a meniscus lens with negative refractive power. The second lens is a meniscus lens with positive 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 an object side. The fifth lens is with refractive power and includes a concave surface facing an image side. The sixth lens is with negative refractive power and includes a concave surface facing the object side.

Abstract: An optical path turning module includes an optical path turning unit, a carrier, a fixing element and a driver. The optical path turning unit includes a sloping surface. A light beam enters the optical path turning unit along a first axis, is reflected by the sloping surface, and leaves the optical path turning unit along a second axis. The carrier is configured to fix the optical path turning unit and includes a main body and a plurality of first clamping portions. The main body is sloped with respect to the second axis, and the first clamping portions extend from the main body in a direction parallel to the second axis. The carrier is disposed in the fixing element. The driver is configured to drive the carrier to rotate about a third axis with respect to fixing element. The third axis is perpendicular to the first axis and the second axis.

Abstract: A lens assembly includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens arranged on an optical axis from an object side to an image side. The first lens is a meniscus lens having a negative refractive power. The second lens has a positive refractive power. The third lens has a positive refractive power, and has a convex image-side surface. The fourth lens has a positive refractive power. The fifth lens has a negative refractive power, and has a concave image-side surface. The lens assembly is formed compact, and has wide viewing angle and telecentric optical design.

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: An optical indicating structure includes a light guiding element and a light source. The light guiding element includes a protruding portion, a light exit surface and a light incident surface, wherein the light exit surface is formed on the protruding portion. The light source is configured to emit a light beam, wherein the light beam enters the light guiding element through the light incident surface and leaves the light guiding element through the light exit surface to be an indicating sign.

Abstract: A lens module includes a first lens barrel and a first element. The first lens barrel includes a first outer wall and a plurality of first lenses, wherein the first lenses have an optical axis formed from an object side to an image side. The first element is configured to carry the first lens barrel and includes an outer circumferential portion, wherein the outer circumferential portion surrounds the optical axis and includes at least four barriers. The barriers form an accommodating space in which the first lens barrel is disposed. At least one of the barriers has an opening portion to expose the first outer wall of the first lens barrel. The first outer wall of the first lens barrel is not protruded from the opening portion.

Abstract: A lens module includes an optical turning unit and a lens unit. The optical turning unit includes a reflecting surface. The lens unit includes a lens barrel and a lens constituting an optical axis, and the lens barrel includes a first end portion adjacent to the optical turning unit. The reflecting surface and the optical axis meet at an intersection point, a distance from the intersection point to the lens is a fourth length, a distance from the intersection point to the first end portion is a fifth length, and a normal line of the reflecting surface is sloped at a first angle with respect to the optical axis. The lens module satisfies: 0.8<tan (?)×A?/B?<1, ? is the first angle, A? is the fourth length, and B? is the fifth length.

Abstract: A compensating mechanism includes a base, an adjusting unit, an adjusting cap and a stop unit. The adjusting unit is disposed on the base. The adjusting cap is configured to move the adjusting unit with respect to the base so as to form a first circumferential movement range. The stop unit includes a sliding element and a limiting element, wherein the limiting element includes a movement region, and the adjusting cap is configured to move the sliding element along the movement region so as to form a second circumferential movement range. A sum of a first central angle corresponding to the first circumferential movement range and a second central angle corresponding to the second circumferential movement range is a fixed value. A sight is provided to include a main body, an objective unit, an ocular unit, an inner lens barrel and the compensating mechanism.

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 telephoto 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 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, which includes a convex surface facing the object side. The second lens is with negative refractive power. The third lens is with positive refractive power. The fourth lens is with positive refractive power. The fifth lens is with negative refractive power. The telephoto lens assembly satisfies the following condition: DFOV?40 Degrees; wherein DFOV is a diagonal field of view.

Abstract: An imaging device includes a base, a prism module, a lens module and an imaging module. The prism module is fixedly disposed in the base. The lens module includes a lens unit, a first carrier configured to fix the lens unit, and a second carrier configured to accommodate the first carrier, wherein the lens unit has an optical axis extending in a first direction, the second carrier is connected to the base through an axial elastomer extending in the first direction, and the prism module and the lens module are disposed in the base and sequentially arranged in the first direction.

Abstract: An optical apparatus includes a main body, a reflecting object lens pivotally connected to the main body and a cover pivotally connected to the reflecting object lens. The reflecting object lens is rotatable with respect to the main body within a first angle, and the cover is rotatable with respect to the reflecting object lens within a second angle.

Abstract: A prism and light transmitter module includes a prism holder, a light transmitter, a prism module, a drive circuit board, a shield, and a fixing assembly. The light transmitter is configured to emit or receive a light beam along a light axis. The prism module includes an inclined plane and is disposed within the prism holder with the inclined plane exposed. The drive circuit board is disposed above the inclined plane, and intersects with the light axis at a first angle. The shield is disposed on the drive circuit board. The fixing assembly connects to the prism holder, is configured to fix the drive circuit board, and includes a hole through which the light transmitter is exposed. A binocular capable of measuring distance includes a first optical system and a second optical system. The first optical system or/and the second optical system include the prism and light transmitter module.

Abstract: A slim lens assembly in accordance with the invention in order from an object side to an image side along an optical axis, comprises a first lens, a second lens, a third lens and a fourth lens. The first lens is with positive refractive power, which includes a convex surface facing an image side. The second lens is with positive refractive power, which includes a concave surface facing the image side. The third lens is with positive refractive power, which includes a concave surface facing the object side and a convex surface facing the image side. The fourth lens is with positive refractive power.