Han's Laser Technology Industry Group Co., Ltd.

Han's Cnc Science and Technology Co., Ltd

Han's Laser Technology Co., Ltd.

Jiaying Li

Yunfeng Gao

Chaoming Zhou

Bo Sun

Yuqing Chen

Hai Huang

Hi Huang

A reconnaissance objective lens used for an unmanned aircraft, the reconnaissance objective lens comprising a first lens (L), a second lens (L), a third lens (L), a fourth lens (L) and a fifth lens (L) successively and coaxially arranged along the transmission direction of incident light rays. The first lens (L) is a biconvex lens, the second lens (L) is a biconcave lens, the third lens (L) is a meniscus lens, the fourth lens (L) is a meniscus lens, and the fifth lens (L) is a meniscus lens. The first lens (L) and the second lens (L) are glued to one another, and the fourth lens (L) and the fifth lens (L) are glued to one another. By using the rational configuration of the first to fifth lenses (L-L) having positive and negative optical power, the reconnaissance objective lens used for an unmanned aircraft effectively solves the technical problem of it being difficult for current reconnaissance objective lenses for unmanned aircraft to achieve a large field of view, high resolution and low distortion.

Reconnaissance objective lens used for unmanned aircraft

A far infrared detector and objective lens and lens set thereof. The far infrared imaging lens set () comprises a first lens () and a second lens () arranged in sequence along a principal axis; the first lens () has a first curved surface () having a radius of curvature of 2.4&#xd7;(1&#xb1;5%) mm and a second curved surface () having a radius of curvature of 2&#xd7;(1&#xb1;5%) mm; the second lens () has a third curved surface () having a radius of curvature of 50&#xd7;(1&#xb1;5%) mm and a fourth curved surface () having a radius of curvature of 60&#xd7;(1&#xb1;5%) mm; wherein the first curved surface (), the second curved surface (), the third curved surface (), and the fourth curved surface () are arranged in sequence; the first curved surface (), the second curved surface () and the third curved surface () are all convex to the object side, and the fourth curved surface is convex to the image side. Distant targets can be detected in dark and foggy environments, and imaging capability is high.

Far infrared imaging lens set, objective lens and detector

An optical lens for laser marking includes a first lens (L), a second lens (L), and a third lens (L), which are successively coaxially arranged along a transmission direction of incident light, wherein the first lens (L) and the second lens (L) are meniscus lenses, and the third lens (L) is a biconvex lens; wherein the first lens (L) has a first surface (S) and a second surface (S), the second lens (L) has a third surface (S) and a fourth surface (S), the third lens (L) has a fifth surface (S) and a sixth surface (S); the first surface (S) to the sixth surface (S) are successively arranged along the transmission direction of the incident light; wherein radii of curvature of the first surface to the sixth surface are &#x2212;47&#xb1;5% mm, &#x221e;, &#x2212;218&#xb1;5% mm, &#x2212;81&#xb1;5% mm, 778&#xb1;5% mm, and &#x2212;142&#xb1;5% mm, respectively; wherein central thicknesses of the first lens, the second lens, and the third lens are 4&#xb1;5% mm, 15&#xb1;5% mm, and 18&#xb1;5% mm, respectively. The optical lens for laser marking not only has high engraving quality, but also has a high engraving speed with a higher efficiency than conventional engraving lens.

Optical lenses for laser marking

A lens module () and a 3D printer () comprising same. The lens module comprises a first lens (L), a second lens (L) and a third lens (L) sequentially and coaxially arranged in the transmission direction of incident light. The first lens, the second lens and the third lens are all meniscus lenses. The first lens comprises a first curved surface (S) and a second curved surface (S). The second lens comprises a third curved surface (S) and a fourth curved surface (S). The third lens comprises a fifth curved surface (S) and a sixth curved surface (S). The first to the sixth curved surfaces are sequentially arranged in the transmission direction of the incident light, and the curvature radii of the first to the sixth curved surfaces are sequentially &#x2212;200&#xb1;5%, &#x2212;100&#xb1;5%, &#x2212;80&#xb1;5%, &#x2212;150&#xb1;5%, &#x2212;100&#xb1;5% and &#x2212;70&#xb1;5% in a unit of millimeter. By means of the lens module, the printing efficiency of the 3D printer is high and it is convenient to carry out printing of ultra-large workpieces.

3D printer and lens module used by same

An optical lens comprising a first lens (L), a second lens (L), a third lens (L), a fourth lens (L), and a fifth lens (L) that are sequentially arranged on a common optical axis in the transmission direction of an incident light. Both the first lens (L) and the fifth lens (L) are negative meniscus lenses. Both the second lens (L) and the third lens (L) are positive meniscus lenses. The fourth lens (L) is a biconvex lens. The optical lens is applicable in an optical system of a laser processing apparatus. When an employed processing wavelength is different from a monitoring wavelength, imaging color differences in a monitoring system can thus be eliminated, specifically, when a wavelength in the infrared range is employed as a laser processing wavelength while a red wavelength serves as the monitoring wavelength, improved imaging effects are provided in the monitoring system, thus ensuring the quality of laser processing.

Optical lens

An F-&#x3b8; lens for laser engraving includes a first lens (L), a second lens (L), a third lens (L), and a fourth lens (L), which are coaxially arranged along a transmission direction of incident light; wherein the first lens (L) is a meniscus lens, the second lens (L) is a meniscus lens, the third lens (L) is a plano-convex lens, and the fourth lens (L) is a flat lens; wherein the first lens (L) has a first surface (S) and a second surface (S), the second lens (L) has a third surface (S) and a fourth surface (S), the third lens (L) has a fifth surface (S) and a sixth surface (S), and the fourth lens (L) has a seventh surface (S) and an eighth surface (S); the first surface (S) to the eighth surface (S) are sequentially arranged along the transmission direction of the incident light; wherein radii of curvature of the first surface (S) to the eighth surface (S) are &#x2212;29 mm, &#x2212;88 mm, &#x2212;56 mm, &#x2212;36 mm, &#x221e;, &#x2212;116 mm, &#x221e;, and &#x221e;, respectively; and center thicknesses (d, d, d, d) of the first lens (L) to the fourth lens (L) are 3 mm, 6 mm, 6 mm, and 3 mm, respectively.

F-theta photolithographic lenses

An F&#x3b8; lens for infrared large-format telecentric laser marking is disclosed, including a first lens element, a second lens element, a third lens element and a fourth lens element arranged sequentially along the propagation direction of an incident ray. The first lens element is a negative biconcave lens element including a first curved surface and a second curved surface. The second lens element is a positive meniscus lens element including a third curved surface and a fourth curved surface. The third lens element is a positive meniscus lens element including a fifth curved surface and a sixth curved surface. The fourth lens element is a plane lens adapted to play a role in protecting other lens elements. The first to third lens elements are arranged around a same axis along the propagation direction of the incident ray. The first to sixth curved surfaces are arranged sequentially along the propagation direction of the incident ray. The above F&#x3b8; lens for infrared large-format telecentric laser marking can be used as an F&#x3b8; lens for infrared laser marking, which can meet the telecentric requirement of the large-format laser marking, and control the volume of the lens within an acceptable and applicable range, to achieve miniaturizing of the whole optical system.

Infrared large-format telecentric laser marking F theta lens

A photographic objective lens includes seven lenses, wherein a first lens is a meniscus lens, a second lens is a meniscus lens, a third lens is a meniscus lens, a fourth lens is a biconcave lens, a fifth lens is a biconvex lens, a sixth lens is a biconvex lens, a seventh lens is a meniscus lens. The first lens has a first curved surface and a second curved surface, the second lens has a third curved surface and a fourth curved surface, the third lens has a fifth curved surface and a sixth curved surface, the fourth lens has a seventh curved surface and a eighth curved surface, the fifth lens has a ninth curved surface and a tenth curved surface, the sixth lens has a eleventh curved surface and a twelfth curved surface, and the seventh lens has a thirteenth curved surface and a fourteenth curved surface; wherein the first curved surface to the fourteenth curved surface are sequentially arranged along a transmission direction of incident light.

Photographic objective lens

A photographic objective lens includes a first lens (L), a second lens (L), a third lens (L), a fourth lens (L), a fifth lens (L), a sixth lens (L), and a seventh lens (L), which are sequentially coaxially arranged along a propagation direction of incident light, wherein the first lens (L) is a negative meniscus lens; the second lens (L) is a drum lens; the third lens (L) is a negative meniscus lens; the fourth lens (L) is a drum lens; the fifth lens (L) is a biconcave lens; the sixth lens (L) is a positive meniscus lens; the seventh lens (L) is a biconvex lens; the two curved surfaces of each lens are the light incidence surface and the light outgoing surface of the lens, respectively.

An optical lens includes a first lens (L), a second lens (L), a third lens (L), and a fourth lens (L), which are successively coaxially arranged along the transmission direction of incident light, wherein the first lens (L) and the fourth lens (L) are negative meniscus lenses, the second lens (L) is a positive meniscus lens, and the third lens (L) is a positive plano-convex lens. The optical lens can be applied to an optical system of a laser processing device, when a utilized processing wavelength is different from a monitoring wavelength, the imaging chromatic aberration in a monitoring system may be eliminated, particularly when a wavelength of the far infrared region is utilized as a wavelength for laser processing. When using the red light wavelength as the monitoring wavelength, the monitoring system can achieve a better imaging effect, thus ensuring the quality of laser processing.

A telecentric optical lens (), comprising a first lens (L) to a fifth lens (L) arranged sequentially and co-axially along the direction of transmission of the incident light ray; the first lens (L) is a plano-concave negative lens; the second lens (L) is a meniscus negative lens; the third lens (L) is a meniscus negative lens; the fourth lens (L) is a biconvex positive lens; and the fifth lens (L) is a plano-concave negative lens; the arrangement and design parameters of the first lens (L) to the fifth lens (L) of the telecentric optical lens () allow said telecentric optical lens () to achieve a telecentric effect, and simultaneously satisfy achromatic and relatively large aperture requirements.

Telecentric optical lens

An optical lens, comprising a first to an eighth lens (L, L, L, L, L, L, L, L) coaxially arranged in sequence along the direction of transmission of an incident light ray. The first lens (L) is a negative meniscus lens, and the curved surface of the first lens (L) is convex to the object side; the second lens (L) is a positive biconvex lens; the third lens (L) is a negative biconcave lens; the fourth lens (L) is a positive meniscus lens and the curved surface of the fourth lens (L) is convex to the object side; the fifth lens (L) is a negative meniscus lens and the curved surface of the fifth lens (L) is convex to the object side; the sixth lens (L) is a positive biconvex lens; the seventh lens (L) is a negative meniscus lens and the curved surface of the seventh lens (L) is convex to the image side; and the eighth lens (L) is a negative meniscus lens and the curved surface of the eighth lens (L) is convex to the image side; the fourth lens (L) and the fifth lens (L) are respectively positioned on the two sides of an optical diaphragm () of the optical lens; the second lens (L), the third lens (L), and the fourth lens (L) form a first cemented lens set; and the fifth lens (L), the sixth lens (L), and the seventh lens (L) form a second cemented lens set. The present optical lens has a relatively large field-of-view, and obtains high-definition zero distortion imaging results.

A large filed achromatic lens is disclosed, including a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element arranged sequentially along the propagation direction of an incident ray. The first lens element is a meniscus lens element including a first curved surface and a second curved surface; the second lens element is a meniscus lens element, including a third curved surface and a fourth curved surface; the third lens element is a biconvex lens element, including a fifth curved surface and a sixth curved surface; the fourth lens element is a biconvex lens element, including a seventh curved surface and an eighth curved surface; the fifth lens element is a biconcave lens element including a ninth curved surface and a tenth curved surface; and the sixth lens element is a plane lens element adapted to play a role in protecting other lens elements. The first to the fifth lens elements are arranged around a same axis sequentially along the propagation direction of an incident ray. The first to the tenth curved surfaces are arranged sequentially along the propagation direction of the incident ray. The above large filed achromatic lens can be used as a fine photoetching lens for laser marking, or other fine processing lenses.

Large-field-of-view achromatic lens

An F&#x3b8; lens and a laser processing device for far-infrared laser processing are provided. The F&#x3b8; lens for far-infrared laser processing comprises a first lens (L), a second lens (L) and a third lens (L) which are coaxially arranged successively along a transmission direction of incident light beams, wherein the first lens is a negative meniscus lens, and the second lens and the third lens are positive meniscus lenses; and all the middle parts of the first lens, the second lens and the third lens protrude towards the transmission direction of incident light beams. The F&#x3b8; lens can improve the imaging quality and the resolution distance, effectively calibrate the astigmatism and distortion of the lens, reduce the influence of high-order aberrations, and has a high degree of energy concentration of laser focus points and high processing accuracy, thereby meeting the requirements for cutting or drilling. The F&#x3b8; lens is miniaturized, so that the volume of the lens is effectively controlled, and costs are reduced.

F-theta lens and laser processing device for far-infrared laser processing

An F&#x3b8; lens for extreme ultraviolet laser marking assembly and a laser processing device are provided. The lens assembly includes a first lens (L), a second lens (L), a third lens (L), and a fourth lens (L) successively coaxially arranged along a transmission direction of an incident laser. The first lens (L) is a biconcave negative lens; the second lens (L) is a falcate negative lens; the third lens (L) is a falcate positive lens; and the fourth lens (L) is a biconvex positive lens; and an intermediate part of the second lens (L) and the third lens (L) are both convex toward a transmission direction of the laser. A proportion of the refractive index of the first, the second, the third and the fourth lenses to the abbe number is 1.476/68, with a tolerance of 5%. By means of the design of the four lenses and relative positions therebetween, astigmatism and distortion are effectively corrected, and the focusing degree of the energy is high. Imaging and marking of high quality are achieved; imaging quality is improved, and the structure of the lens assembly is simple, which is convenient for designing and appropriate for various laser processing devices.

Growing community of inventors

Shenzhen, China

Jiaying Li