Camera Lens

#This application claims the priority benefit of Japanese Patent Applications Ser. No. 2018-137213 and filed on Jul. 20, 2018, the entire content of which is incorporated herein by reference.

#The present disclosure relates to the field of camera lenses, and more particularly, to a camera lens, which is constituted by eight lenses, is applicable to a mobile phone camera assembly, a WEB camera lens and the like using camera elements such as a high-pixel CCD and a CMOS, and meanwhile has an excellent optical characteristic, an ultra-thin appearance with total track length (TTL)/image height (IH)≤1.65, a wide angle with a field of view (hereinafter briefly referred to as 2ω) of 70° or more, and an F-number (hereinafter briefly referred to as Fno) of 1.45 or less.

#In recent years, various types of camera devices using camera elements such as a CCD and a CMOS have been widely applied. With miniaturization and high performance-oriented development of these camera elements, the society has a stronger demand for a camera lens with excellent optical characteristics, an ultra-thin appearance, a wide-angle and a bright Fno.

#FIG. 1 is a diagram showing configuration of a camera lens LA according to an embodiment of the present disclosure.

#FIG. 2 is a diagram showing configuration of a specific Embodiment 1 of the camera lens LA.

#FIG. 3 is an axial aberration diagram of the camera lens LA according to Embodiment 1.

#An embodiment of a camera lens related to the present disclosure will be described with reference to the accompanying drawing. FIG. 1 is a diagram showing configuration of a camera lens according to an embodiment of the present disclosure. The camera lens LA is constituted by eight lens groups, and a 1st lens L1, a 2nd lens L2, a 3rd lens L3, a 4th lens L4, a 5th lens L5, a 6th lens L6, a 7th lens L7 and an 8th lens L8 are configured successively from an object side to an image side. A glass flat plate GF is provided between the 8th lens L8 and an image surface. The glass flat plate GF may be a glass cover sheet or an optical filter having an IR cut-off function. Or, the glass flat plate GF may not be provided between the 8th lens L8 and the image surface.

#The 1st lens L1 has a positive refractive power, the 2nd lens L2 has a negative refractive power, the 3rd lens L3 has a negative refractive power, the 4th lens L4 has a positive refractive power, the 5th lens L5 has a negative refractive power, the 6th lens L6 has a positive refractive power, the 7th lens L7 has a positive refractive power, and the 8th lens L8 has a negative refractive power. In order to better correct an aberration problem, it is most preferable to design surfaces of the eight lenses as aspherical.

#The camera lens LA is a camera lens that satisfies conditional formulas (1)-(2) below: