Optical lens group
An optical lens and lens technology, applied in the field of optical lens groups, can solve the problems of long total length, inability to improve the sensitivity of the second positive lens, etc.
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no. 1 example 》
[0116] Please refer to the first embodiment of the present invention Figure 1A , Please refer to the aberration curve of the first embodiment Figure 1B . The optical lens group of the first embodiment is mainly composed of four lenses, which include in order from the object side to the image side:
[0117] A first lens 110 with positive refractive power. The object side surface 111 is convex and the image side surface 112 is concave. The material is plastic. The object side surface 111 and the image side surface 112 of the first lens 110 are aspherical. ;
[0118] A second lens 120 with positive refractive power. The object side surface 121 is concave and the image side surface is convex 122. The material is plastic. The object side surface 121 and the image side surface 122 of the second lens 120 are aspherical. ;
[0119] A third lens 130 with negative refractive power. The object side surface 131 is concave and the image side surface 132 is convex. The material is plastic. The ...
no. 2 example 》
[0145] Please refer to the second embodiment of the present invention Figure 2A , Please refer to the aberration curve of the second embodiment Figure 2B . The optical lens group of the second embodiment is mainly composed of four lenses, which include in order from the object side to the image side:
[0146] A first lens 210 with positive refractive power. The object side surface 211 is convex and the image side surface 212 is concave. The material is plastic. The object side surface 211 and the image side surface 212 of the first lens 210 are aspherical. ;
[0147] A second lens 220 with positive refractive power. The object side surface 221 is convex and the image side surface is convex 222. The material is plastic. The object side surface 221 and the image side surface 222 of the second lens 220 are aspherical. ;
[0148] A third lens 230 with negative refractive power. The object side surface 231 is concave and the image side surface 232 is convex. The material is plastic. T...
no. 3 example 》
[0168] Please refer to the third embodiment of the present invention Figure 3A , Please refer to the aberration curve of the third embodiment Figure 3B . The optical lens group of the third embodiment is mainly composed of four lenses, which include in order from the object side to the image side:
[0169] A first lens 310 with positive refractive power. The object side surface 311 is concave and the image side surface 312 is convex. The material is plastic. The object side surface 311 and the image side surface 312 of the first lens 310 are aspherical. ;
[0170] A second lens 320 with positive refractive power. The object side surface 321 is concave and the image side surface 322 is convex. The material is plastic. The object side surface 321 and the image side surface 322 of the second lens 320 are aspherical. ;
[0171] A third lens 230 with negative refractive power. The object side surface 331 is concave and the image side surface 332 is convex. The material is plastic. The...
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