31results about How to "With super wide angle" patented technology

The invention discloses a wide-angle imaging lens. The wide-angle imaging lens comprises a first lens having negative refraction power, a second lens having refraction power, a third lens having positive refraction power, a fourth lens having positive refraction power, a fifth lens having negative refraction power, and a sixth lens having refraction power which are sequentially distributed from the object side to the image side; the image side surface of the first lens is a concave surface and is made of plastics; the object side surface of the second lens is a convex surface; the image side surface of the second lens is a concave surface; the image side surface of the third lens is a convex surface; the image side surface of the fourth lens is a convex surface; and the object side surface of the sixth lens is a convex surface. The wide-angle imaging lens satisfies the condition that 1.1<f1/f4<0, wherein f1 is the effective focal length of the first lens, and f4 is the effective focal length of the fourth lens. The wide-angle imaging lens of the invention is small in size, can maintain high image quality and has a super wide field of view.

The invention relates to an ultra-wide-angle lens with a 2.8mm fixed focus. An optical system of the lens is provided with a front set A, a diaphragm C and a rear set B in the incidence direction of light from left to right in sequence. The front set A is sequentially provided with a negative meniscus lens A-1, a negative meniscus lens A-2 and a double convex lens A-3, wherein the focus fA of the front set A is -9.8mm. The rear set B is sequentially provided with a double convex lens B-1 and a gluing set, wherein a double convex lens B-2 is connected with a positive meniscus lens B-3 in a sealed mode to form the gluing set, the focus fB of the rear set B is 5.67mm. The ultra-wide-angle lens with the 2.8mm fixed focus has the advantages of having an ultra-wide angle, high resolution, a large relative aperture, the focus which is fixed all day long and the like. The ultra-wide-angle lens with the 2.8mm fixed focus can be matched with a CCD camera with the 3-million-pixel high resolution or a CMOS camera with the 3-million-pixel high resolution, is generally used in places with a small visibility range and a large view angle such as elevator cages and halls, and is a mainstream product of a miniature monitoring image pickup system.

The invention discloses a pickup lens group, which comprises a first lens with focal power, a second lens with negative focal power, a third lens with positive focal power, a fourth lens with positivefocal power, and a fifth lens with negative focal power along an optical axis from an object side to an image side, wherein the image side surface of the second lens is a concave surface; the image side surface of the fourth lens is a convex surface; an air interval is formed between any two adjacent lenses in the first lens to the fifth lens; and at least one lens in the first lens to the fifthlens is provided with an irrotationally-symmetric aspheric surface. The effective focal length fx of the X-axis direction of the pickup lens group and the effective focal length fy of the Y-axis direction of the pickup lens group meet a condition that fx/fy is greater than 0.90 and less than 1.25.

The invention discloses an optical imaging system. The system comprises a first lens with negative focal power and a convex object-side surface, a second lens with negative focal power, a third lens with positive focal power, a fourth lens with positive focal power, a fifth lens with negative focal power and a sixth lens with positive focal power from the object side to the image side along an optical axis in sequence; the largest field of view FOV of the optical imaging system and the distance TTL between the object-side surface of the first lens and the image-side surface of the optical imaging system on the optical axis meet the relation expression that tan (FOV/2)/TTL>1.0 mm<-1>; the center thickness CT1 of the first lens on the optical axis and the center thickness CT4 of the fourth lens on the optical axis meet the relation expression that 0.9<=CT1/CT4<1.5.

The invention provides a camera shooting optical lens. The camera shooting optical lens comprises six lenses which are sequentially a first lens with negative refractive power, a second lens with positive refractive power, a third lens with positive refractive power, a fourth lens with negative refractive power, a fifth lens with positive refractive power and a sixth lens with negative refractivepower from the object side to the image side, wherein the Abbe number of the first lens is v1, the Abbe number of the third lens is v3, the on-axis distance from the image side surface of the fifth lens to the object side surface of the sixth lens is d10, the on-axis thickness of the sixth lens is d11, and the following relational expressions are satisfied, 60.00 </= v1 </= 90.00, 60.00 </= v3 </=90.00, 1.00 </= d10/d11 </= 5.00. The camera shooting optical lens has good optical performance and meets design requirements of ultra-wide angle and ultra-thinness.

The invention relates to a zoom lens, which sequentially comprises a compensation group (a) with negative focal power, a diaphragm and a zoom group (b) with positive focal power along the direction from an object side to an image side, wherein the focal length of the compensation group (a) is Fa, the focal length of the zoom group (b) is Fb, and Fa/Fb is greater than or equal to -0.98 and less than or equal to -0.79. The zoom lens provided by the invention has the characteristics of high pixel, low cost, athermalization and infrared confocal property.

The invention provides an aspheric ultra-short throwing projection lens. The aspheric ultra-short throwing projection lens comprises a plurality of coaxial lenses positioned between a projection surface and a DMD chip, a front lens group for deflecting wide-angle light into a paraxial light beam, and a rear lens group for telecentric imaging of the paraxial light beam on the DMD chip.

The invention discloses an optical imaging lens, a camera module and electronic equipment, which belong to the technical field of optical elements. The optical imaging lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, wherein the first lens has negative focal power, the object side surface of the first lens is a convex surface, and the image side surface is a concave surface; the second lens has focal power; the third lens has positive focal power, the object side surface is a convex surface, and the image side surface is a convex surface; the fourth lens has negative focal power, the object side surface is a convex surface, and the image side surface is a concave surface; the fifth lens has negative focal power; the sixth lens has positive focal power, the object side surface of the sixth lens is a convex surface, and the image side surface of the sixth lens is a convex surface; the seventh lens has positive focal power, the object side surface of the seventh lens is a convex surface, and the image side surface of the seventh lens is a convex surface; the maximum half field angle of the optical imaging lens is greater than or equal to 64.5 degrees; the Abbe number of the second lens is V2, the curvature radius value of the image side surface of the second lens is R4, and 2.5<V2/R4<3.5.

The embodiment of the invention discloses a panoramic optical system based on free-form surface design, and the system sequentially comprises a first lens and a seventh lens from an object surface to an image surface along an optical axis: the object surface sides of the first lens and the seventh lens are convex surfaces, the image surface sides of the first lens and the seventh lens are concave surfaces, and the focal powers of the first lens and the seventh lens are negative; the second lens is a biconcave lens, and the focal power of the second lens is negative; the image surface side of the third lens is a concave surface, and the focal power of the third lens is negative; the object plane sides of the fourth lens and the fifth lens are convex surfaces, and the focal power of the fourth lens and the fifth lens is positive; the object plane side of the sixth lens is a concave surface, the image plane side is a convex surface, and the focal power is negative; the object plane sides of the eighth lens and the ninth lens are convex surfaces, and the focal power of the eighth lens and the ninth lens is positive. The optical system provided by the embodiment of the invention is mainly composed of nine lenses, adopts a free-form surface design surface type, and has the optical properties of ultra-wide angle, high pixel, elliptical image circle, good athermalization and the like.

The embodiment of the invention discloses an ultra-wide-angle ultra-high-pixel optical system. The ultra-wide-angle ultra-high-pixel optical system sequentially comprises 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 from an object plane to an image plane along an optical axis; the object plane side of the first lens is a convex surface, the image plane side is a concave surface, and the focal power is negative; the second lens, the fourth lens and the eighth lens are biconcave lenses, and thefocal power is negative; the third lens, the fifth lens, the sixth lens and the seventh lens are biconvex lenses, and the focal power of the lenses is positive; the focal power of the ninth lens is positive; and the focal power of the tenth lens is negative. According to the embodiment of the invention, the ultra-wide-angle ultra-high-pixel optical system mainly comprises 10 lenses, and is reasonable in the number of lenses, ingenious in structure, small in size and reasonable in cost; different lenses are combined with each other and the focal power is reasonably distributed, so that the ultra-wide-angle ultra-high-pixel optical system has an ultra-wide angle, 48 million ultra-high pixels, a large target surface and other good performance.

The embodiment of the invention discloses an optical system, a camera module and electronic equipment. The optical system includes a first lens and a second lens having negative refractive power, a third lens and a sixth lens having positive refractive power, and a fourth lens and a fifth lens having refractive power. The object-side surface of the second lens is a concave surface in a paraxial region, the object-side surface of the fourth lens is a convex surface in a paraxial region, and the object-side surface and the image-side surface of the sixth lens are convex surfaces in paraxial regions. The optical system meets the following conditional expression: 84.5 degrees/mm < FOV/EPD < 99 degrees/mm, wherein FOV is the maximum field angle of the optical system, and EPD is the entrance pupil diameter of the optical system. By reasonably configuring the refractive power of the first lens to the sixth lens, the surface types of the second lens, the fourth lens and the sixth lens and limiting the FOV/EPD range, the optical system has the characteristics of ultra-wide angle and large aperture and has good imaging quality.