44results about How to "Optimizing Optical Parameters" patented technology

The invention discloses an optical imaging lens group. The optical imaging lens group sequentially comprises a first lens with focal power, a second lens, a third lens, a fourth lens, a fifth lens, asixth lens, a seventh lens, an eighth lens and a ninth lens from an object side to an image side along an optical axis. The fourth lens has negative focal power, and the image side surface of the fourth lens is a concave surface; the image side surface of the fifth lens is a convex surface; the eighth lens has positive focal power; and the distance TTL between the object side surface of the firstlens and the imaging surface of the optical imaging lens group on the optical axis, half ImgH of the diagonal length of the effective pixel region of the optical imaging lens group and the F number Fno of the optical imaging lens group satisfy the following formula: Fno*TTL / ImgH< 2.5.

The invention discloses a star sensor calibration method based on a pitching rolling and rotating table and nonlinear optimization. According to the method, firstly, a star sensor calibration system based on the pitching rolling and rotating table and nonlinear optimization is built, wherein the system comprises a parameter initial value estimation module, a parameter recording module, a parametersolving module, a parameter optimization module and a parameter determining module. The method sequentially comprises the following steps of estimating the focal length of the star sensor and the initial value of the main point; recording the mass centric coordinates of the star point light spots in a star sensor measuring coordinate system and the direction vector of parallel light in the star sensor measuring coordinate system after the rotation; solving the angle distance cosine value of the star point light posts in different coordinate systems; building optical parameters of a target function optimized star sensor; judging whether the algorithm meets the iteration termination conditions or not through the star point light spot re-projection errors for determining the final optimization parameters. The method has the advantages that the optical parameters of the star sensor are calibrated; meanwhile, the rotation matrix between the pitching rolling and rotating table and the starsensor can be eliminated.

The invention discloses an optical imaging lens group, which sequentially comprises,from an object side to an image side along an optical axis, a first lens having negative focal power; a second lenshaving focal power; a third lens having focal power, wherein the image side surface of the third lens is a convex surface; a fourth lens having positive focal power; a fifth lens having focal power; asixth lens having focal power; a seventh lens having focal power, wherein the image side surface of the seventh lens is a convex surface; and an eighth lens having negative focal power. The effectivefocal length f4 of the fourth lens and the total effective focal length f of the optical imaging lens group meet the condition that f4 / f is larger than 2 and smaller than 3.

The invention discloses an optical imaging lens which sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens with focal power from an object side to an image side along an optical axis. The first lens has negative focal power, the object side surface of the first lens is a concave surface, and the image side surface is a convex surface; and the third lens has negative focal power. The distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and halfImgH of the diagonal length of the effective pixel region on the imaging surface of the optical imaging lens satisfy the condition that TTL / ImgH is less than or equal to 1.4.

The invention discloses an optical imaging lens, which sequentially comprises a first lens with focal power, a second lens with focal power, a third lens with focal power, a fourth lens with negative focal power; a fifth lens with focal power, and a sixth lens with focal power along the optical axis from an object side to an image side, wherein the object side surface of the third lens is a concave surface, the half Semi-FOV of the maximum field angle of the optical imaging lens meets the condition that Semi-FOV is greater than or equal to 60 degrees, the curvature radius R5 of the object side surface of the third lens and the curvature radius R9 of the object side surface of the fifth lens meet the following condition that R5 / R9 is more than 3.5 and less than 11.5, and the curvature radius R9 of the object side surface of the fifth lens and the effective focal length f5 of the fifth lens meet the condition that R9 / f5 is more than -4.0 and less than or equal to -1.5.

The invention discloses an optical imaging lens, and the lens sequentially comprises the following five lenses from an object side to an image side along an optical axis: a first lens with focal power, wherein the object side of the first lens is a concave surface; a second lens with positive focal power; a third lens with negative focal power, wherein the object side of the third lens is a convexsurface; a fourth lens with focal power; and a fifth lens with focal power, wherein the object side of the fifth lens is a concave surface. A half of the Simi-FOV of the maximum field angle of the optical imaging lens meets the condition that the Simi-FOV is greater than or equal to 60 degrees; the half ImgH of the diagonal length of the effective pixel area on the imaging surface of the opticalimaging lens, the effective focal length f2 of the second lens and the effective focal length f5 of the fifth lens meet the condition that ImgH / (f2 + f5) is more than 0 and less than 5.0.

The invention discloses an optical imaging lens. The optical imaging lens sequentially comprises the following lens from an object side to an image side along an optical axis: a first lens with focal power, wherein the object side surface is a convex surface; a second lens with focal power; a third lens positive focal power; and a fourth lens with focal power, wherein the object side surface of the fourth lens is a concave surface. A half Semi-FOV of the maximum field angle of the optical imaging lens meets the condition that Semi-FOV is greater than 10 degrees and smaller than 25 degrees; and the distance TOL between the shot object and the object side surface of the first lens on the optical axis meets the following condition: 2.0 mm < TOL < 32.0 mm.

The invention discloses an optical imaging lens which sequentially comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens from an object side to an image side along an optical axis, wherein the first lens has focal power, the second lens has focal power, the third lens has negative focal power and the object side surface of the third lens is a convex surface, the fourth lens has focal power, and the fifth lens has negative focal power and the object side surface of the fifth lens is a convex surface. Half of the Simi-FOV of the maximum field angle of the optical imaging lens satisfies Simi-FOV >= 60 degrees. The spacing distance T34 between the third lens and the fourth lens on the optical axis and the central thickness CT5 of the fifth lens on the optical axissatisfy 1.5 < T34 / CT5 < 2.5.

The invention discloses an optical imaging lens, which sequentially comprises a first lens with focal power, an object side surface of the lens is a concave surface; a second lens with focal power, the image side surface of the lens is a convex; a third lens with focal power, the object side surface of the lens is a concave surface; a fourth lens with positive focal power, the object side surfaceof the lens is a concave surface; and a fifth lens with focal power, from an object side to an image side along an optical axis. Half of the Simi-FOV of the maximum field angle of the optical imaginglens meets the condition that the Simi-FOV is larger than or equal to 60 degrees. And half ImgH of the diagonal length of the effective pixel area of the optical imaging lens, the effective focal length f2 of the second lens and the effective focal length f5 of the fifth lens satisfy 3.0 < ImgH / (f2 + f5) < 7.5.

The invention discloses a pick-up lens. The pick-up lens comprises a first lens with positive focal power, a second lens with focal power, a third lens with focal power, a fourth lens with focal power, a fifth lens with focal power, a sixth lens with focal power, a seventh lens with positive focal power, and an eighth lens with negative focal power which are sequentially distributed. The total effective focal length f of the pick-up lens and the maximum half field angle Semi-FOV of the pick-up lens meet the condition that f * tan (Semi-FOV) is greater than 7.0 mm; and the refractive index N1 of the first lens and the refractive index N4 of the fourth lens meet the condition that (N4+N1) / (N4-N1) is less than 20.

The invention discloses an optical imaging system. The optical imaging system sequentially comprises the following lenses from an object side to an image side along an optical axis: a first lens having positive focal power; a second lens having negative focal power; a diaphragm; a third lens having focal power; a fourth lens which has negative focal power, wherein the image side surface of the fourth lens is a convex surface; a fifth lens having focal power; a sixth lens which has focal power, wherein the object side surface of the sixth lens is a concave surface; and a seventh lens having focal power. The distance TTL between the object side surface of the first lens and the imaging surface of the optical imaging system on the optical axis and half ImgH of the diagonal length of the effective pixel area on the imaging surface of the optical imaging system satisfy the following formula: 1.0 < TTL / ImgH < 1.3.

The invention discloses a pick-up lens. The pick-up lens sequentially comprises from an object side to an image side along an optical axis: a first lens with negative focal power; a second lens with focal power; a third lens with focal power; a fourth lens with positive focal power; a fifth lens with negative focal power; a sixth lens with positive focal power; and a seventh lens with a negative focal power. The distance TTL from the object side surface of the first lens to the imaging surface of the pick-up lens on the optical axis, half ImgH of the diagonal length of an effective pixel area of the pick-up lens and the total effective focal length f of the pick-up lens meet the condition that TTL*ImgH / f is more than 15mm and less than 18mm; and the distortion DIST0.8F of the pick-up lens at the 0.8 field of view meets the following condition: |DIST0.8F| is less than 2%.

The invention discloses a pick-up lens group. The pick-up lens group sequentially comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens with focal power from an object side to an image side along an optical axis, at least one lens among the first to the fifth lenses is provided with an aspheric mirror surface which is in non-rotational symmetry. And the maximum effective radius DT11 of the object side surface of the first lens meets the condition that DT11 is less than 0.80 mm.

The invention discloses an optical imaging lens group, which sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens from an object side to an image side along an optical axis, wherein the second lens has focal power; the third lens has focal power, and an image side surface of the third lens is a concave surface; the fourth lens has negativefocal power; the fifth lens has focal power; and the sixth lens has focal power. Half (Semi-FOV) of the maximum field angle of the optical imaging lens group meets the condition that the Semi-FOV is larger than 45 degrees and smaller than 55 degrees. The curvature radius R1 of the object side surface of the first lens, the curvature radius R2 of the image side surface of the first lens, the curvature radius R3 of the object side surface of the second lens, and the curvature radius R4 of the image side surface of the second lens satisfy the conditions that 0.5<(R1+R2) / (R3-R4)<1.5.

The invention discloses a camera lens group, which sequentially comprises a first lens with focal power, a second lens with positive focal power, a third lens with negative focal power, a fourth lenswith positive focal power, a fifth lens with focal power and a sixth lens with focal power from an object side to an image side along an optical axis. The object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface; the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a concave surface, and the image side surface of the third lens is a concave surface; the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a concave surface; and the object side surface of the sixth lens is a convex surface, and the image side surface of the sixth lens is a concavesurface. The F number Fno of the camera lens group meets the condition that Fno is less than or equal to 1.45.

The invention discloses an optical imaging system, which sequentially comprises, from an object side to an image side along an optical axis: a prism, a diaphragm, a first lens, a second lens, a thirdlens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, wherein the prism reflects light incident to the prism in a first direction to be emitted from the prism in a second direction; thediaphragm, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens are sequentially arranged from the prism to the image side in the second direction. The total effective focal length f of the optical imaging system and an entrance pupil diameter EPD of the optical imaging system meet the condition that f / EPD is smaller than 1.4.

The invention discloses a pick-up lens. The pick-up lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens from an object side to an image side along an optical axis, the second lens has focal power; the third lens has negative focal power; the fourth lens has focal power; the fifth lens has negative focal power; and the sixth lens has positive focal power. The distance TTL from the object side surface of the first lens to the imaging surface of the camera lens on the optical axis and the maximum field angle FOV of the camera lens meet the condition that TTL / Tan (FOV) is more than or equal to 6mm and less than 8.0 mm; and the Abbe number V1 of the first lens and the Abbe number V2 of the second lens meet the condition that (V1 + V2) / 2 is more than 70 and less than 90.

The invention discloses a zoom lens group, which sequentially comprises: a first lens group with negative focal power and having a first lens and a second lens which are arranged in order along an optical axis, wherein the first lens and the second lens are glued to form a first balsaming lens; a second lens group with positive focal power and having a third lens, a fourth lens and a fifth lens which are arranged in order along the optical axis, wherein the fourth lens and the fifth lens are glued to form a second balsaming lens; a third lens group with positive focal power and having a sixthlens. The spacing distance between the first lens group and the second lens group on the optical axis and the spacing distance between the second lens group and the third lens group on the optical axis are changed so as to realize switching of the zoom lens group from the wide-angle state to the telephoto state. The total effective focal length FT when the zoom lens group is in the long-focus state and the total effective focal length FW when the zoom lens group is in the wide-angle state meet the condition that FT / FW is larger than or equal to 2.0.