Optical imaging lens and portable electronic device
An optical imaging lens and imaging technology, applied in optics, optical components, instruments, etc., can solve the problems of unfavorable thinning and large distance of mobile phones and digital cameras, achieve good imaging quality and overcome aberrations
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[0036] The term "a lens has a positive refractive power (or negative refractive power)" in this specification refers to the positive (or negative) refractive power of the lens on the optical axis calculated by Gaussian optics theory. The image side and object side are defined as the range through which the imaging light passes, where the imaging light includes the chief ray Lc and the marginal ray Lm, such as figure 1 As shown, I is the optical axis and this lens is radially symmetrical to each other with the optical axis I as the symmetry axis. The area where the light rays pass through the optical axis is the area A near the optical axis, and the area where the marginal light rays pass is the area C near the circumference. , In addition, the lens also includes an extension E (that is, the area near the circumference C radially outward), which is used for the lens to be assembled in an optical imaging lens, and the ideal imaging light does not pass through the extension E , b...
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