Abstract: The disclosure provides a collimating lens. In order from a laser transmitter side to a to-be-measured object side, the collimating lens includes a first lens, a second lens, a third lens, a fourth lens and an aperture stop. The aperture stop is on the to-be-measured object side, and optical centers of each lens being on a same line. The collimating lens satisfying the following conditions: (dn/dt)1<?50×10?6/° C., (dn/dt)2<?50×10?6/° C., (dn/dt)3<?50×10?6/° C., (dn/dt)4>?10×10?6/° C. A refractive index of each lens is usually distributed reasonably with temperature, the focal length can be stabilized and applied to different temperature occasion. Under the same size laser emitter, the focal length of the system is larger, and the field of view angle is smaller.

Abstract: The present disclosure provides a miniature imaging lens including, along an optical axis in order from an object side to an image side, a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a positive refractive power; a fourth lens having a negative refractive power; a fifth lens having a positive refractive power; a sixth lens having a negative refractive power; and a filter. The miniature imaging lens satisfies a conditional expression 2<f1/R1<3, where f1 denotes a focal length of the first lens, and R1 denotes a radius of curvature of the object-side surface of the first lens.

Abstract: The disclosure provides a telephoto lens and a mobile terminal, form an object side to an imaging surface, sequentially includes: a first lens having a positive refractive power, a second lens having a refractive power, a third lens having a negative refractive power, a flat glass and a filter. An object side surface of the first lens is a convex surface, an image side surface of the third lens is s concave surface. The mobile terminal includes the telephoto lens, an image sensor, a processor and a memory. The image sensor are coupled to the telephoto lens, the two are cooperated to capture images. The processor is configured to process the captured images, and the memory is configured to store the captured images. The telephoto lens and the mobile terminal provided in the disclosure can achieve a higher zoom ratio than the conventional telephoto lens, and better satisfy the requirements of miniaturization and high-definition imaging of electronic products.

Abstract: The disclosure provides an optical imaging lens, a camera module and a mobile phone. The optical imaging lens sequentially includes: a first lens having a positive refractive power, a convex object side surface and a concave image side surface; a second lens with a negative refractive power; a third lens with a positive refractive power; a fourth lens with a negative refractive power, wherein an object side surface of the fourth lens is concave at the paraxial region, and an image side surface of the fourth lens is convex at the paraxial region; a fifth lens with a negative refractive power, an image side surface of the fifth lens being concave at the paraxial region; a sixth lens with a positive refractive power; and a seventh lens with a negative refractive power.

Abstract: The disclosure provides a collimating lens, a projecting module, and a mobile phone. An object side of the collimating lens is defined as adjacent to a laser transmitter, an image side of the collimating lens is defined as adjacent to an object to be measured. Along an optical axis from the object side to the image side, the collimating lens sequentially includes a first lens, a second lens, a third lens and a stop. An object side surface of the first lens is convex, an object side surface of the second lens is concave surface, an object side surface of the third lens is convex, and an image side surface of the third lens is convex. The stop is positioned between the third lens and the object to be measured. The material of each of the first lens, the second lens, and the third lens is plastic.

Abstract: A collimator lens system includes a first lens, a second lens, a third lens and a diaphragm from an object side to an image side of the system in turn along an optical axis, in which the first lens is of a positive focal power, and an object side surface thereof is convex; the second lens is of a negative focal power; the third lens is of a positive focal power, and an image side surface thereof is convex; optical centers of all the lenses are arranged along a same straight line, the system meets following formulas: f12>f3; (dn/dt)1<?50×10?6/° C.; (dn/dt)2<?50×10?6/° C.; (dn/dt)3>?10×10?6/° C., where f12 represents a combined focal length of the first and second lenses, f3 represents a focal length of the third lens, and (dn/dt)1, (dn/dt)2, and (dn/dt)3 represent change rates of refractive indices of the first lens, the second lens and the third lens with temperature, respectively.

Abstract: A collimator lens system includes a first lens, a second lens, a third lens and a diaphragm from an object side to an image side of the system in turn along an optical axis, in which the first lens is of a positive focal power, and an object side surface thereof is convex; the second lens is of a negative focal power; the third lens is of a positive focal power, and an image side surface thereof is convex; optical centers of all the lenses are arranged along a same straight line, the system meets following formulas: f12>f3; (dn/dt)1<-50×10?6/° C.; (dn/dt)2<-50×10?6/° C.; (dn/dt)3>-10×10?6/° C., where f12 represents a combined focal length of the first and second lenses, f3 represents a focal length of the third lens, and (dn/dt)1, (dn/dt)2, and (dn/dt)3 represent change rates of refractive indices of the first lens, the second lens and the third lens with temperature, respectively.

Abstract: A collimator lens includes a first lens, a second lens and a diaphragm from an object side to an image side of the assembly in turn along an optical axis, in which the first lens is of a positive focal power, and an object side surface thereof is convex; the second lens is of a positive focal power, and an image side surface thereof is convex; optical centers of the first lens and the second lens are arranged along a same straight line, the system meets following formulas: f1>f2; (dn/dt)1<?50×10?6/° C.; (dn/dt)2>?10×10?6/° C., where f1 represents a focal length of the first lens, f2 represents a focal length of the second lens, (dn/dt)1 represents a change rate of a refractive index of the first lens with temperature, and (dn/dt)2 represents a change rate of a refractive index of the second lens with temperature.

Abstract: The present disclosure provides a miniature imaging lens including, along an optical axis in order from an object side to an image side, a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a positive refractive power; a fourth lens having a negative refractive power; a fifth lens having a positive refractive power; a sixth lens having a negative refractive power; and a filter. The miniature imaging lens satisfies a conditional expression 2<f1/R1<3, where f1 denotes a focal length of the first lens, and R1 denotes a radius of curvature of the object-side surface of the first lens.

Abstract: A collimator lens includes a first lens, a second lens and a diaphragm from an object side to an image side of the assembly in turn along an optical axis, in which the first lens is of a positive focal power, and an object side surface thereof is convex; the second lens is of a positive focal power, and an image side surface thereof is convex; optical centers of the first lens and the second lens are arranged along a same straight line, the system meets following formulas: f1>f2; (dn/dt)1<?50×10?6/° C.; (dn/dt)2>?10×10?6/° C., where f1 represents a focal length of the first lens, f2 represents a focal length of the second lens, (dn/dt)1 represents a change rate of a refractive index of the first lens with temperature, and (dn/dt)2 represents a change rate of a refractive index of the second lens with temperature.