Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A kind of optical lens and lens technology, applied in the field of optical lens, can solve the problem of wide viewing angle and achieve the effect of high imaging quality and low sensitivity
Inactive Publication Date: 2020-04-17
辽宁中蓝光电科技有限公司
View PDF4 Cites 4 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
This requires the role of a wide-angle lens, which has a shorter focal length than a standard lens but a wider viewing angle.
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0042] Refer to the following Figure 1 to Figure 2D An optical lens according to Embodiment 1 of the present application is described. figure 1 A schematic structural diagram of the optical lens according to Embodiment 1 of the present application is shown.
[0043] like figure 1 As shown, the optical lens according to the exemplary embodiment of the present application includes in sequence from the object side to the image side along the optical axis: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, Filter E5, image plane S13.
[0044] The first lens E1 has negative refractive power, its object side S2 is concave, and the image side S3 is concave; the second lens E2 has positive refractive power, its object side S5 is convex, and the image side S6 is convex; the third lens E3 has Positive refractive power, the object side S7 is convex, and the image side S8 is convex; the fourth lens E4 has negative refractive power, the object side S9 is ...
Embodiment 2
[0063] Refer to the following Figure 3 to Figure 4D An optical lens according to Embodiment 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, descriptions similar to those in Embodiment 1 will be omitted. image 3 A schematic structural view of the optical lens according to Embodiment 2 of the present application is shown.
[0064] like image 3 As shown, the optical lens according to the exemplary embodiment of the present application includes in sequence from the object side to the image side along the optical axis: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, Filter E5 image plane S13.
[0065] The first lens E1 has negative refractive power, its object side S2 is concave, and the image side S3 is concave; the second lens E2 has positive refractive power, its object side S5 is convex, and the image side S6 is convex; the third lens E3 has Positive refractive power, ...
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
Login to view more
Abstract
The invention discloses an optical lens. The lens sequentially comprises a first lens, a second lens, a third lens and a fourth lens from an object side to an image side along an optical axis, whereinthe first lens has negative focal power, an image side surface of the first lens is a concave surface, at least one surface of the first lens is an aspheric surface, the second lens has positive focal power, an object side surface of the second lens is a convex surface, the third lens has positive focal power, an object side surface of the third lens is a convex surface, at least one surface is aspheric, the fourth lens is a lens with negative focal power and high refractive power, the half-image height IH of the optical lens and the total optical length TTL of the optical lens satisfy IH/TTL< 0.27, optical distortion of the optical lens is smaller than 25%, the field angle FOV of the optical lens is larger than or equal to 101 degrees, and the total optical length TTL of the optical lens and the optical back focus BFL of the optical lens meet the condition that TTL/BFL is larger than 3.8.
Description
technical field [0001] The present application relates to an optical lens, and more particularly, the present application relates to an optical lens including four lenses. Background technique [0002] With the continuous development of portable electronic products such as smartphones, lens shooting requires a wider field of view. This requires the role of wide-angle lenses, which have a shorter focal length than standard lenses but have a wider viewing angle. As technology develops, lenses need to meet miniaturization requirements while having wide-angle characteristics. Contents of the invention [0003] The present invention provides an optical lens applicable to portable electronic products, which can at least solve or partially solve at least one of the above-mentioned shortcomings in the prior art. [0004] An optical lens, which sequentially includes a first lens, a second lens, a third lens and a fourth lens along an optical axis from the object side to the image...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more