Optical imaging system

An optical imaging system and optical axis technology, applied in optics, optical components, instruments, etc., can solve the problems of large aberrations, limited applications, and low pixels of ultra-wide-angle imaging systems

Pending Publication Date: 2019-11-08
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the ultra-wide-angle imaging system has problems such as large aberrations an

Method used

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Embodiment 1

[0058] Refer to the following Figure 1 to Figure 2D An optical imaging system according to Embodiment 1 of the present application is described. figure 1 A schematic structural diagram of an optical imaging system according to Embodiment 1 of the present application is shown.

[0059] Such as figure 1 As shown, the optical imaging system includes in sequence from the object side to the image side along the optical axis: the first lens E1, the second lens E2, the third lens E3, the diaphragm STO, the fourth lens E4, the fifth lens E5, the sixth lens Lens E6 and filter E7.

[0060] The first lens E1 has negative refractive power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has negative refractive power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has positive refractive power, its object side S5 is convex, and its image side S6 is convex. The fourth lens E4 has positive refractive power, its objec...

Embodiment 2

[0073] Refer to the following Figure 3 to Figure 4D An optical imaging system 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 diagram of an optical imaging system according to Embodiment 2 of the present application is shown.

[0074] Such as image 3 As shown, the optical imaging system includes in sequence from the object side to the image side along the optical axis: the first lens E1, the second lens E2, the third lens E3, the diaphragm STO, the fourth lens E4, the fifth lens E5, the sixth lens Lens E6 and filter E7.

[0075] The first lens E1 has negative refractive power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has negative refractive power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has positive re...

Embodiment 3

[0085] Refer to the following Figure 5 to Figure 6D An optical imaging system according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging system according to Embodiment 3 of the present application is shown.

[0086] Such as Figure 5 As shown, the optical imaging system includes in sequence from the object side to the image side along the optical axis: the first lens E1, the second lens E2, the third lens E3, the diaphragm STO, the fourth lens E4, the fifth lens E5, the sixth lens Lens E6 and filter E7.

[0087] The first lens E1 has negative refractive power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has negative refractive power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has positive refractive power, its object side S5 is convex, and its image side S6 is convex. The fourth lens E4 has positive refractive power, its obj...

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PUM

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Abstract

The invention discloses an optical imaging system. The system comprises a first lens with negative focal power and a convex object-side surface, a second lens with negative focal power, a third lens with positive focal power, a fourth lens with positive focal power, a fifth lens with negative focal power and a sixth lens with positive focal power from the object side to the image side along an optical axis in sequence; the largest field of view FOV of the optical imaging system and the distance TTL between the object-side surface of the first lens and the image-side surface of the optical imaging system on the optical axis meet the relation expression that tan (FOV/2)/TTL>1.0 mm<-1>; the center thickness CT1 of the first lens on the optical axis and the center thickness CT4 of the fourth lens on the optical axis meet the relation expression that 0.9<=CT1/CT4<1.5.

Description

technical field [0001] The present application relates to an optical imaging system, and more particularly, to an optical imaging system including six lenses. Background technique [0002] With the ever-changing market demand, ultra-wide-angle imaging systems are increasingly used in surveillance, military and virtual reality and other fields. However, the ultra-wide-angle imaging system has problems such as large aberrations and low pixels, which seriously limit its application in industry, life and other fields. [0003] In order to meet the demand for miniaturization and meet the imaging requirements, an optical imaging system that can take into account miniaturization, ultra-wide angle, and high pixels is required. Contents of the invention [0004] The present application provides an optical imaging system 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. [0005...

Claims

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Application Information

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IPC IPC(8): G02B13/06G02B13/18G02B1/00
CPCG02B13/06G02B13/18G02B1/00G02B9/62G02B13/0045
Inventor 娄琪琪戴付建赵烈烽
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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