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Miniaturized optical system, light source module and portable electronic device

A technology of optical systems and electronic devices, applied in the field of optical systems, can solve problems such as unsuitable miniaturization development trend, unfavorable miniaturization, large thickness of secondary optical lens, etc.

Active Publication Date: 2016-09-28
PIXART IMAGING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the secondary optical lens 94 has a large thickness and is not conducive to miniaturization, especially not suitable for the current trend of portable electronic devices towards miniaturization.

Method used

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  • Miniaturized optical system, light source module and portable electronic device
  • Miniaturized optical system, light source module and portable electronic device
  • Miniaturized optical system, light source module and portable electronic device

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Embodiment Construction

[0034] In order to make the above and other objects, features, and advantages of the present invention more apparent, a detailed description will be given below with reference to the accompanying drawings. In the description of the present invention, the same components are denoted by the same symbols, and will be described here first.

[0035] Please refer to figure 2 As shown, it shows a schematic diagram of a miniaturized optical system 1 according to an embodiment of the present invention, including a protective cover 11 , a light source 12 , an image sensor 13 , at least one interference film (such as 14 and 14 ′ shown here) and a lens 15 . The miniaturized optical system 1 of the embodiment of the present invention can be, for example, a proximity sensing device, a gesture recognition device, or an optical finger mouse, etc., which can be applied to portable Electronic devices, such as mobile phones, tablet computers, notebook computers, and digital mobile assistants, ...

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Abstract

The invention discloses a miniaturized optical system which comprises a protective cover, a light source, an image sensor and at least one thin interference film. The protective cover is provided with a first surface and a second surface, and the light source and the image sensor are opposite to the first surface of the protective cover. The thin interference films are arranged between the light source and the protective cover so that preset light patterns can be formed in front of the second surface of the protective cover by the light source, and / or the thin interference films are arranged between the image sensor and the protective cover so that light within a preset range in front of the second surface of the protective cover can be received by the image sensor.

Description

technical field [0001] The invention relates to an optical system, in particular to a miniaturized optical system and a portable electronic device capable of controlling the shape of light emitting light and the field of view of light receiving. Background technique [0002] With the diversification of smart phone products, user-friendly operation and energy saving have always been important issues. For example, the gesture recognition function can be applied to smart phones to increase operable functions and operational convenience; the proximity detection function can also be applied to smart phones to turn off the screen when the user answers a call to save energy consumption. These functions are usually realized by providing a light source and an image sensor for sensing the light reflected by the light source. [0003] For example figure 1 A known optical system is shown, which can be used to realize the function of gesture recognition or proximity sensing. The known...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/01G06F3/033G02B27/00G02B5/28
Inventor 陈晖暄刘恬嘉苏文彦
Owner PIXART IMAGING INC