Unlock instant, AI-driven research and patent intelligence for your innovation.

Camera optics

A technology of optical lens and optical total length, which is applied in the field of optical lens, can solve problems such as inability to correct off-axis aberrations, and achieve the effects of good optical performance, high resolution, and good imaging quality

Active Publication Date: 2022-07-08
AAC OPTICS (CHANGZHOU) CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, rotationally symmetrical aspheric surfaces are mostly used. This type of aspheric surface only has sufficient degrees of freedom in the meridional plane, and cannot correct off-axis aberrations well.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Camera optics
  • Camera optics
  • Camera optics

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0053] Referring to the accompanying drawings, the present invention provides an imaging optical lens 10 . figure 1 The imaging optical lens 10 according to the first embodiment of the present invention is shown, and the imaging optical lens 10 includes six lenses. Specifically, the imaging optical lens 10, from the object side to the image side, sequentially includes: an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens Lens L6. Optical elements such as an optical filter GF may be provided between the sixth lens L6 and the image plane Si.

[0054] The first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has positive refractive power, the fourth lens L4 has negative refractive power, the fifth lens L5 has positive refractive power, and the sixth lens L6 has Negative bending force.

[0055] In this embodiment, the first lens L1 is made of plastic materia...

no. 2 approach

[0149] The second embodiment is basically the same as the first embodiment, the meanings of symbols are the same as those of the first embodiment, and only the differences are listed below.

[0150] Table 4 and Table 5 show design data of the imaging optical lens 20 according to the second embodiment of the present invention. The object side surface and the image side surface of the sixth lens L6 are free-form surfaces.

[0151] 【Table 4】

[0152]

[0153] Table 5 shows aspherical surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.

[0154] 【table 5】

[0155]

[0156] Table 6 shows free-form surface data in the imaging optical lens 20 according to the second embodiment of the present invention.

[0157] 【Table 6】

[0158]

[0159] Figure 4 The case where the RMS spot diameter of the imaging optical lens 20 of the second embodiment is within the first quadrant is shown, according to Figure 4 It c...

no. 3 approach

[0163] The third embodiment is basically the same as the first embodiment, the meanings of symbols are the same as those of the first embodiment, and only the differences are listed below.

[0164] Tables 7 and 8 show design data of the imaging optical lens 30 according to the third embodiment of the present invention. The object side surface and the image side surface of the second lens L2 are free curved surfaces.

[0165] 【Table 7】

[0166]

[0167]

[0168] Table 8 shows aspherical surface data of each lens in the imaging optical lens 30 according to the third embodiment of the present invention.

[0169] 【Table 8】

[0170]

[0171] Table 9 shows free-form surface data in the imaging optical lens 30 according to the third embodiment of the present invention.

[0172] 【Table 9】

[0173]

[0174]

[0175] Image 6 The case where the RMS spot diameter of the imaging optical lens 30 of the third embodiment is within the first quadrant is shown, according to...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the field of optical lenses, and discloses an imaging optical lens. The imaging optical lens comprises, in order from the object side to the image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, The sixth lens; at least one of the first to sixth lenses includes a free-form surface, the focal length of the first lens is f1, the focal length of the second lens is f2, and the focal length of the third lens is f3, so The focal length of the fourth lens is f4, and satisfies the following relational expressions: f1≥0.00; f2≤0.00; f3≥0.00; f4≤0.00. The imaging optical lens provided by the invention has good optical performance and meets the design requirements of high resolution, wide angle and good imaging quality.

Description

technical field [0001] The invention relates to the field of optical lenses, in particular to an imaging optical lens suitable for portable terminal equipment such as smart phones and digital cameras, as well as imaging devices such as monitors and PC lenses. Background technique [0002] With the development of imaging lenses, people have higher and higher requirements for imaging lenses, and the "night scene photography" and "background blur" of the lens have also become important indicators to measure the imaging standard of the lens. At present, rotationally symmetric aspheric surfaces are mostly used. Such aspheric surfaces only have sufficient degrees of freedom in the meridional plane and cannot correct off-axis aberrations well. Freeform surface is a non-rotationally symmetrical surface type, which can better balance aberrations and improve imaging quality, and the processing of freeform surfaces is gradually mature. With the improvement of lens imaging requirements...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/18
CPCG02B13/0045G02B13/06G02B13/18
Inventor 孙雯夏傑
Owner AAC OPTICS (CHANGZHOU) CO LTD