A forward projecting condensing and collimating optical platform enables the ability to more effectively utilize the light generated from a Lambertian light source. The optical system can effectively utilize light emitted from a 120-degree source viewing angle over a substantially large extended field of view. The optical system can project a high intensity light in a smaller packaging envelope. The optical design can be used for generation of hi-Intensity spot beams, fog lamps, head lamp low beams, head lamps, hi beams, a driving beam, and the like, while operating at a lower power input to equivalent optical systems.

An optical imaging lens including a first to a seventh lens elements arranged in sequence from an object side to an image side along an optical axis is provided. Each lens element includes an object-side surface and an image-side surface. An optical axis region of the image-side surface of the first lens element is concave. An optical axis region of the object-side surface of the third lens element is concave. The fourth lens element has positive refracting power and an optical axis region of the image-side surface of the fourth lens element is concave. An optical axis region of the image-side surface of the fifth lens element is concave. Furthermore, other optical imaging lenses are also provided.

An optical imaging lens including a first to a seventh lens elements arranged in sequence from an object side to an image side along an optical axis is provided. Each lens element includes an object-side surface and an image-side surface. An optical axis region of the image-side surface of the first lens element is concave. An optical axis region of the object-side surface of the third lens element is concave. The fourth lens element has positive refracting power and an optical axis region of the image-side surface of the fourth lens element is concave. An optical axis region of the image-side surface of the fifth lens element is concave. Furthermore, other optical imaging lenses are also provided.

Present embodiments provide for a mobile device and an optical imaging lens thereof. The optical imaging lens comprises five lens elements positioned sequentially from an object side to an image side. Through controlling the convex or concave shape of the surfaces and/or the refracting power of the lens elements, the optical imaging lens shows better optical characteristics and the total length of the optical imaging lens is shortened.

The present invention relates to a manufacturing method for a mid-infrared lens, which includes the following steps: placing a lens in the path of a far-infrared radiation source, enabling the lens to receive the far infrared rays; immersing the lens in a hardening liquid, causing the hardening liquid to coat the lens, wherein the hardening liquid is an intermixture of silicone and isopropanol or an intermixture of silicone and methanol, and a far-infrared material or a far-infrared composite material is additionally added to the hardening liquid; placing the lens coated with the hardening liquid in a drying space to dry, causing the hardening liquid to dry and harden and form a hardened layer on the surface of the lens. The temperature of the drying space lies between 80 and 120° C., and the drying time lies between 1 and 10 hours.

The present invention relates to a manufacturing method for a mid-infrared lens, which includes the following steps: placing a lens in the path of a far-infrared radiation source, enabling the lens to receive the far infrared rays; immersing the lens in a hardening liquid, causing the hardening liquid to coat the lens, wherein the hardening liquid is an intermixture of silicone and isopropanol or an intermixture of silicone and methanol, and a far-infrared material or a far-infrared composite material is additionally added to the hardening liquid; placing the lens coated with the hardening liquid in a drying space to dry, causing the hardening liquid to dry and harden and form a hardened layer on the surface of the lens. The temperature of the drying space lies between 80 and 120° C., and the drying time lies between 1 and 10 hours.

An optical lens assembly, including a first lens element, a second lens element, a third lens element, a fourth lens element, and a fifth lens element sequentially along an optical axis from a first side to a second side, is provided. The optical lens assembly satisfies the conditional expression of D34/D12≥2.600. Furthermore, other optical lens assemblies are also provided.

Provided are an optical system capable of improving the spatial resolution of hyperspectral imaging and an optical alignment method using the same. The optical system includes a digital micromirror device (DMD) having a rectangular shape, a first cylindrical lens curved to focus and form an image on an axis corresponding to a shorter side of the DMD, and a second cylindrical lens curved in the same axial direction as the axis to collimate light reflected from the DMD.

Provided are an optical system capable of improving the spatial resolution of hyperspectral imaging and an optical alignment method using the same. The optical system includes a digital micromirror device (DMD) having a rectangular shape, a first cylindrical lens curved to focus and form an image on an axis corresponding to a shorter side of the DMD, and a second cylindrical lens curved in the same axial direction as the axis to collimate light reflected from the DMD.

An optical lens assembly includes, in order from the object side to the image side: a first lens with negative refractive power, a second lens with positive refractive power, a stop, a third lens with positive refractive power, a fourth lens with positive refractive power, a fifth lens with negative refractive power, and an IR band-pass filter. A maximum field of view of the optical lens assembly is FOV, a f-number of the optical lens assembly is Fno, a distance from an object-side surface of the first lens to an image plane along an optical axis is TL, a distance from an image-side surface of the fifth lens to the image plane along the optical axis is BFL, an entrance pupil diameter of the optical lens assembly is EPD, and the following conditions are satisfied: 0.58<FOV/(Fno*100)<1.28 and 4.76<(TL−BFL)/EPD<12.03.