Lens module and image acquisition device
A module and lens technology, which is applied in the field of optical applications, can solve the problems of affecting the quality of photography/camera imaging, insufficient shooting light to reinforce the light, and small light irradiation range, so as to achieve good light output effect, expand the irradiation range, and improve imaging effect of effect
Inactive Publication Date: 2016-03-02
NANCHANG O FILM OPTICAL ELECTRONICS TECH CO LTD +3
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Problems solved by technology
[0002] The image capture devices of existing mobile terminals such as mobile phones and tablet computers are usually equipped with an LED light as a flashlight, which is used to supplement the light when the light is not enough.
However, the light emitted by the LED light of the existing image capture device usually passes through the transparent glass arranged on the mobile terminal casing and directly illuminates the object to be photographed. The light irradiation range is generally small, so that the light in the center of the image illuminated by it The intensity concentration is high, which affects the imaging quality of photography / video
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[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0020] see figure 1 and figure 2 , The first preferred embodiment of the present invention provides a lens module 10 including a Fresnel lens 11 and a uniform plate 13 . The lens module 10 of the present invention is disposed corresponding to the light source 100 for providing uniform light to the subject so as to capture the image of the subject.
[0021] The Fresnel lens 11 has a base surface 111 and an annular tooth surface 113 facing away from the base surfa...
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The invention provides a lens module which comprises a Fresnel lens and a light uniforming plate. The Fresnel lens is provided with a base surface and an annular tooth surface which is deviated from the base surface. The annular tooth surface is provided with a plurality of concentric annular sawteeth. The base surface of the Fresnel lens faces the light uniforming plate. The light uniforming plate is used for scattering emergent light which is emitted from the base surface of the Fresnel lens. The invention further provides an image acquisition device. According to the lens module and the image acquisition device, light which is emitted from a light source is refracted through the Fresnel lens and the light uniforming plate, thereby enlarging irradiation range of the emergent light, realizing uniform emitting-out of the light and improving imaging effect of a photographed object.
Description
technical field [0001] The invention relates to the field of optical applications, in particular to a lens module and an image capture device. Background technique [0002] The existing image capture devices of mobile terminals such as mobile phones and tablet computers are usually equipped with an LED light as a flashlight, which is used to supplement the light when the light is insufficient for shooting. However, the light emitted by the LED light of the existing image capture device usually passes through the transparent glass arranged on the mobile terminal casing and directly illuminates the object to be photographed. The light irradiation range is generally small, so that the light in the center of the image illuminated by it High intensity concentration affects the imaging quality of photography / video. Contents of the invention [0003] Provided are a lens module and an image capture device with good light output effect. [0004] A lens module, comprising a Fresne...
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IPC IPC(8): G02B13/00G02B1/04G02B1/00
Inventor 朱孝菲
Owner NANCHANG O FILM OPTICAL ELECTRONICS TECH CO LTD