Optical image acquiring lens group
An image mirror and optical technology, which is applied in the field of miniaturized optical image pickup mirror sets, can solve the problems of inability to meet the requirements of photographic lens modules, difficult glass lens manufacturing processes, and difficulty in shortening the total optical length, so as to shorten the total optical length and reduce the system Sensitivity, the effect of reducing sensitivity
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no. 1 example
[0097] Please refer to the schematic diagram of the optical system of the first embodiment of the present invention Figure 1A , for the aberration curve of the first embodiment, please refer to Figure 1C . The optical imaging lens group of the first embodiment is mainly composed of four lenses, which sequentially include from the object side to the image side:
[0098] A first lens 110 with positive refractive power, its object-side surface 111 and image-side surface 112 are convex, its material is glass, the object-side surface 111 and image-side surface 112 of the first lens 110 are both aspherical ;
[0099] A second lens 120 with negative refractive power, its object side surface 121 is convex and image side surface 122 is concave, its material is plastic, the object side surface 121 and image side surface 122 of the second lens 120 are both aspherical , and the object-side surface 121 of the second lens 120 is provided with at least one inflection point;
[0100] A t...
no. 2 example
[0128] Please refer to the schematic diagram of the optical system of the second embodiment of the present invention Figure 2A , for the aberration curve of the second embodiment, please refer to Figure 2C . The optical imaging lens group of the second embodiment is mainly composed of four lenses, which include sequentially from the object side to the image side:
[0129] A first lens 210 with positive refractive power, its object-side surface 211 and image-side surface 212 are convex, its material is plastic, the object-side surface 211 and image-side surface 212 of the first lens 210 are both aspherical ;
[0130] A second lens 220 with negative refractive power, its object side surface 221 is convex and image side surface 222 is concave, its material is plastic, the object side surface 221 and image side surface 222 of the second lens 220 are both aspherical , and the object-side surface 221 of the second lens 220 is provided with at least one inflection point;
[013...
no. 3 example
[0153] Please refer to the schematic diagram of the optical system of the third embodiment of the present invention Figure 3A , for the aberration curve of the third embodiment, please refer to Figure 3C . The optical imaging lens group of the third embodiment is mainly composed of four lenses, which sequentially include from the object side to the image side:
[0154] A first lens 310 with positive refractive power, its object-side surface 311 and image-side surface 312 are convex, its material is glass, the object-side surface 311 and image-side surface 312 of the first lens 310 are both aspherical ;
[0155] A second lens 320 with negative refractive power, its object side surface 321 is convex and image side surface 322 is concave, its material is plastic, the object side surface 321 and image side surface 322 of the second lens 320 are both aspherical , and the object-side surface 321 of the second lens 320 is provided with at least one inflection point;
[0156] A ...
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