Surface CMOS image sensor camera shooting module

A technology of image sensor and camera module, which is applied in image communication, equipment, television, etc., can solve the problems of poor image quality at the edge of the image, reduce incident light reflection, shorten flange focal length, etc., achieve size reduction, improve overall performance, The effect of shortening the flange focal length

Active Publication Date: 2015-01-07
SHANGHAI INTEGRATED CIRCUIT RES & DEV CENT +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to overcome the above-mentioned defects of poor portability and poor imaging quality of the image edge in the prior art, and provide a curved surface CMOS image sensor camera module, which uses a double Gaussian lens without spherical aberration correction mirror as The main lens, the opposite surface of the CMOS image sensor facing the main lens

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  • Surface CMOS image sensor camera shooting module

Examples

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Embodiment 1

[0044] In this example, see Figure 5 , Figure 5 It is a schematic cross-sectional view of the camera module of the curved surface CMOS image sensor in Embodiment 1 of the present invention. Such as Figure 5 As shown, the curved surface CMOS image sensor camera module of the present invention includes two components of a coupled main lens 46 and a CMOS image sensor 35 . The main lens 46 is based on the double Gauss lens, but the spherical aberration correction lens is canceled. Therefore, the number of lenses is reduced by 3 compared to a typical double Gauss lens composed of 6 lenses, which includes a first convex lens 45 , a concave lens 44 , and a second convex lens 43 from top to bottom. Wherein, the first convex lens 45 and the second convex lens 43 are single-convex lenses, and their convex surfaces are set facing the outer direction of the main lens 46 group, and the concave lens 44 is a double-concave lens. After the main lens 46 cancels the spherical aberration ...

Embodiment 2

[0054] In this example, see Figure 6 , Figure 6 It is a schematic cross-sectional view of the camera module of the curved surface CMOS image sensor in the second embodiment of the present invention. Such as Figure 6 As shown, the curved surface CMOS image sensor camera module of the present invention includes two components of a coupled main lens 46 and a CMOS image sensor 49 . The design of the main lens 46 is exactly the same as that of Embodiment 1 (therefore, the same numerals are used), and it is also based on a double Gauss lens, but the spherical aberration correction lens is canceled, and the number of lenses is also 3. The main lens 46 sequentially includes a first convex lens 45 , a concave lens 44 , and a second convex lens 43 from top to bottom. Wherein, the first convex lens 45 and the second convex lens 43 are single-convex lenses, and their convex surfaces are set facing the outer direction of the main lens 46 group, and the concave lens 44 is a double-con...

Embodiment 3

[0063] In this example, see Figure 7 , Figure 7 It is a schematic cross-sectional view of the camera module of the curved surface CMOS image sensor in the third embodiment of the present invention. Such as Figure 7 As shown, this embodiment is another implementation manner of the first embodiment. The difference between this embodiment and Embodiment 1 is that the surface of the concave curved surface 40 of the metal layer 47 of the sensor 35 has the same curvature as the convex surface of the second convex lens 43 of the main lens 46, namely The shape of the concave curved surface 40 completely matches the convex shape of the second convex lens 43 of the main lens 46 . Therefore, the concave curved surface 40 and the second convex lens 43 are closely coupled, and there is no gap at all. That is to say, at this moment, the flange focal length of the main lens 46 is zero. Correspondingly, the upper end of the optical fiber 39 is no longer exposed, but is indented into t...

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Abstract

The invention discloses a surface CMOS image sensor camera shooting module. According to the surface CMOS image sensor camera shooting module, a double-Gauss lens without a spherical aberration corrective lens is adopted to serve as a main lens, the face, opposite to the face facing the main lens, of a sensor is designed to be a concave surface and correspond to the main lens, and the two ends of each optical fiber connected with a color filter in a coupling mode are connected with a photo diode and the main lens in a coupling mode to transmit the incident light, so that the incident light led out from the main lens can enter all the optical fibers in a divergent mode and arrive at the corresponding photo diodes after being restored by the corresponding color filters, reflection and crosstalk among pixels of the incident light can be eliminated effectively, the light sensitivity is improved, and the size of the module is contracted while the whole image quality is improved.

Description

technical field [0001] The invention relates to the field of integrated circuits, more specifically, to a camera module with a curved surface CMOS image sensor that can improve photosensitivity and simplify the main lens. Background technique [0002] A CMOS image sensor camera module in the prior art includes two components: a CMOS image sensor and a main lens. [0003] Image sensors are devices that convert optical signals into electrical signals, and have been widely used in civil and commercial fields such as digital TV and visual communication. According to different photoelectric conversion methods, image sensors can generally be classified into two types: charge-coupled device image sensor (Charge-coupled Device, CCD) and CMOS image sensor (CMOS IMAGE SENSOR, CIS). [0004] For CCDs, on the one hand, in professional scientific research and industrial fields, CCDs with high signal-to-noise ratio are the first choice; on the other hand, in the field of high-end photogr...

Claims

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Application Information

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IPC IPC(8): H04N5/225G02B13/00
Inventor 陈嘉胤
Owner SHANGHAI INTEGRATED CIRCUIT RES & DEV CENT
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