Abstract: A wide-angle lens assembly includes a first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, and tenth lenses. The first and second lenses are meniscus lenses with negative refractive power. The third and ninth lenses are with negative refractive power. The fourth lens is with refractive power and includes a concave surface facing an object side. The fifth, sixth, and eighth lenses are with positive refractive power. The seventh lens is with refractive power and includes a concave surface facing the object side. The tenth lens is with refractive power and includes a concave surface facing an image side. The wide-angle lens assembly satisfies: 6<f5/f<8.5; wherein f5 is an effective focal length in mm of the fifth lens and f is an effective focal length in mm of the wide-angle lens assembly.

Abstract: A wide-angle 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 a meniscus lens with negative refractive power. The second lens is a meniscus lens with positive refractive power. The third lens is with positive refractive power and comprises a convex surface facing an object side. The fourth lens is with positive refractive power. The fifth lens is with negative refractive power. The wide-angle lens assembly satisfies: 3<TTL/BFL<3.5; wherein TTL is an interval from an object side surface of the first lens to an image plane along the optical axis and BFL is an interval from an image side surface of the fifth lens to the image plane along the optical axis.

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 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 has refractive power and includes a convex surface facing an object side. The second lens has positive refractive power. The third lens has positive refractive power. The fourth lens has refractive power. The fifth lens has refractive power. The sixth lens has positive refractive power and includes a convex surface facing the object side. The lens assembly satisfies the following condition: 0.2<|f5/f|<1.5; wherein f5 is an effective focal length of the fifth lens and f is an effective focal length of the lens assembly.

Abstract: An optical module includes a first bearer and a second bearer. The first bearer includes a first bearing portion and an inclined plane, the first bearing portion is configured to carry a first optical element, and the inclined plane is disposed on a peripheral edge of a first end surface of the first bearing portion. The second bearer includes a second bearing portion and a protruding portion, the second bearing portion is configured to carry a second optical element, a second end surface of the second bearing portion faces the first end surface, and the protruding portion extends from the second end surface to the first bearing portion and is configured to contact the inclined plane. When the protruding portion contacts the inclined plane, the inclined plane does not expose the protruding portion in a direction from the first bearing portion to the second bearing portion.

Abstract: The present invention provides an image capturing system, which includes: a plurality of cameras, a plurality of microphones, an audio processing unit, a video processing unit, and a data processing device. The audio processing unit detects the orientation of the main audio source according to an audio signal received in a space by the microphones. The video processing unit stitches a plurality of images obtained by the cameras into a composite image. The data processing device detects a first object from the composite image according to the orientation of the main audio source.

Abstract: A lens assembly for display includes a display, a lens assembly, and a prism assembly. The display emits a first light beam. The prism assembly includes a first, second prisms, and an optical multilayer film, wherein the first prism includes a first, second, and third surfaces; the second prism includes a fourth, fifth, sixth, seventh, and eighth surfaces; and the optical multilayer film is disposed between the third and fifth surfaces. A second light beam enters the first prism through the first surface and exits by the second surface. The first light beam exits the lens assembly and enters the second prism through the eighth surface, and exits the first prism by the second surface. The lens assembly and the prism assembly satisfy: 0.80%?E1/E0?0.95%; wherein E0 is an energy of the first light beam emitted from the display and E1 is an energy of the first light beam passes through the lens assembly.

Abstract: A lens assembly includes a front lens group and a rear lens group. The front lens group includes a first lens having positive refractive power and a second lens having negative refractive power. The rear lens group includes a third lens having positive refractive power and a fourth lens having negative refractive power, wherein the third lens includes a convex surface facing an object side and another convex surface facing an image side and the fourth lens 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: 13.5 mm<f+f1<20 mm; wherein f is an effective focal length of the lens assembly and f1 is an effective focal length of the first lens.

Abstract: A lens assembly includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh 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 negative refractive power. The second lens is a meniscus lens and includes a convex surface facing the object side and a concave surface facing the image side. The third lens includes a concave surface facing the object side. The fourth lens is with positive refractive power and includes a convex surface facing the object side. The fifth lens includes a convex surface facing the image side. The sixth lens is with negative refractive power. The seventh lens is with positive refractive power and includes a convex surface facing the object side. The fifth lens and the sixth lens are cemented.

Abstract: An optical 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 a meniscus lens with positive refractive power. The second lens is with positive 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 object side. The sixth lens is with positive 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, 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 sighting system includes a sight body, a compensating mechanism, a converting unit, a processing unit and an output unit. The sight body is configured to aim an object. The compensating mechanism is disposed on the sight body and includes a base, an adjusting unit and an adjusting cap, wherein the adjusting cap is configured to rotate the adjusting unit with respect to the base. The converting unit is disposed in the compensating mechanism and is configured to obtain rotation information of the adjusting cap, convert the rotation information into an electrical signal and output the electrical signal. The processing unit is configured to receive the electrical signal for obtaining an instant adjusting value of the adjusting cap and to compare the instant adjusting value with a predetermined adjusting value. The output unit is electrically connected to the processing unit for presenting information for correction of bullet impact points.

Abstract: A lens device includes a first lens module, a first light path turning module and an image sensor. The first lens module, the first light path turning module and the image sensor are sequentially arranged along a light path in which a light beam propagates. The first light path turning module is configured to change a direction in which the light beam propagates so that the light beam passes through the first lens module to form an image on the image sensor.

Abstract: Provided is a wide-angle lens assembly including, in an order from an object side to an image side along an optical axis, a first lens element with negative refractive power, having an image-side surface being concave; a second lens element with negative refractive power, having an image-side surface being concave; a third lens element with negative refractive power; a fourth lens element with positive refractive power; a fifth lens element with a refractive power; a sixth lens element with positive refractive power, having an object-side surface being convex and an image-side surface being convex; a seventh lens element with negative refractive power; and an eighth lens element with positive refractive power, having an object-side surface being convex and an image-side surface being convex. The wide-angle lens assembly is characterized by small size, excellent resolution and great environmental tolerance.

Abstract: A lens assembly is configured to be disposed under a cover glass, in a gap region and outside a display region, including a plurality of lenses, a reflector and an image sensor. The lenses, the reflector and the image sensor are sequentially arranged from an object side to an image side along an optical axis. One of the lenses is adjacent to the object side, has a minimum diameter of clear aperture, and has an outer circumferential portion which is non-circular. The lens assembly satisfies at least one of following conditions: BFL?VL and BFL?0.6×DL where BFL is a back focal length of the lens assembly, VL is a minimum side length of the image sensor, and DL is a diagonal length of the image sensor. A lens device includes a cover glass, a case, a display panel and the lens assembly.

Abstract: A range finder includes a prism module and a prism adjusting mechanism. The prism module includes a fixing prism group and a movable prism group, wherein the fixing prism group is adjacent to the movable prism group. The prism adjusting mechanism includes a first adjusting group and a second adjusting group, wherein the first adjusting group includes a first adjusting member and a second adjusting member, and the second adjusting group includes a third adjusting member. The first adjusting member or the second adjusting member is rotated to axially move so that the movable prism group is rotated with respect to the fixing prism group about a first axis, the third adjusting member is rotated to axially move so that the movable prism group is rotated with respect to the fixing prism group about a second axis, and the first axis is perpendicular to the second axis.

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, a fourth lens, and a fifth lens. The first lens is 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 with positive refractive power. The third lens is with negative refractive power and includes a convex surface facing the object side. The fourth lens is with negative refractive power and includes a concave surface facing the object side. The fifth lens is with positive refractive power and includes a convex surface facing the image side.

Abstract: A lens device includes a lens barrel and a first lens. The lens barrel includes an object-side end. The first lens is fixed to the object-side end of the lens barrel, is configured to form an optical axis, and includes a minor diameter portion near an object side of the lens device and a major diameter portion near an image side of the lens device. The major diameter portion is connected to the minor diameter portion. A section of the first lens sectioned along the optical axis is higher at a middle portion than at both side portions. The first lens is protruded at the middle portion towards the object side to form a pillar with respect to the both side portions thereof.