4results about How to "With wide angle" patented technology

The application relates to the field of optical lenses and discloses a camera optical lens which comprises seven lenses in sequence from the object side to the image side, namely a first lens with positive refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a fourth lens with negative refractive power, a fifth lens with positive refractive power, a sixth lens with positive refractive power and a seventh lens with negative refractive power; wherein the focal length of the camera optical lens is f, the focal length of the first lens is f1, the central curvature radius of the object side surface of the third lens is R5, the central curvature radius of the image side surface of the third lens is R6, the on-axis thickness of the second lens is d3, the on-axis distance from the image side surface of the second lens to the object side surface of the third lens is d4, and the following relationships are satisfied: 1.00 <= f1 / f <= 2.00; 2.00 <= d3 / d4 <= 5.00; and -10.00 <= R5 / R6 <= -1.00. The camera optical lens has good optical performance and meets the design requirements of large aperture, wide angle and ultra-thin.

This invention relates to the field of optical lenses and discloses a camera optical lens comprising seven lenses arranged sequentially from the object side to the image side: 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, a sixth lens with negative refractive power, and a seventh lens with negative refractive power. The fifth lens is made of glass. The Abbe number of the fifth lens is v5, and the central curvature of the object side of the first lens is half... The diameter is R1, the central radius of curvature of the image side of the first lens is R2, the axial thickness of the first lens is d1, the radian value of the field of view of the camera optical lens is FOV (rad), the image height of the 1.0 field of view of the camera optical lens is IH, and the aperture value of the camera optical lens is FNO, and the following relationships are satisfied: 60.00≤v5≤82.00; -16.00≤(R1+R2) / d1≤-8.00; 6.00≤(FOV(rad)IH) / FNO≤7.30.

The application provides a low-distortion high-pixel optical system and an applied camera module, which are mainly composed of eight lenses, wherein the first lens has a convex object plane, a concave image plane and negative optical power; the second lens has a convex object plane, a concave image plane and negative optical power; the third lens has a concave object plane, a convex image plane and positive optical power; the fourth lens has a convex object plane and positive optical power; the fifth lens has a convex object plane, a convex image plane and positive optical power; the sixth lens has a concave object plane, a concave image plane and negative optical power; the seventh lens has a convex image plane and positive optical power; and the eighth lens has a convex object plane, a concave image plane and negative optical power. The application has reasonable lens number, simple structure, optimized lens aberration, improved resolution performance, wide angle, small distortion and high resolution, and is applied to a video conference equipment in a video transmission technology, so that image noise can be reduced, good imaging quality can be realized, and post-processing algorithm is facilitated.

This utility model relates to a miniaturized wide-angle lens with a large image field. From the object side to the image plane, it sequentially includes a first lens group G1 with negative refractive power, a second lens group G2 with positive refractive power, and a third lens group G3 with positive refractive power. The first lens group G1 consists of a first sub-lens group G11 with negative refractive power and a second sub-lens group G12 with positive refractive power. The second lens group G2 includes an LF lens, which serves as a focusing lens. An aperture stop is positioned between the second lens group G2 and the third lens group G3. Both the first lens group G1 and the third lens group G3 include at least one aspherical lens, and the focal length of the aspherical lens in the first lens group G1 satisfies the condition 1.5 ≤ EFL_ASP / EFL_G1 ≤ 4.0, where EFL_ASP and EFL_G1 are the focal lengths of the aspherical lens in the first lens group G1 and the focal length of the first lens group G1, respectively. This lens has the advantages of a large aperture, fixed focal length, large image field, and wide angle, exhibiting excellent optical performance.