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Optical system, receiving module and electronic equipment

An optical system and module technology, applied in the field of three-dimensional imaging, can solve the problems that TOF three-dimensional imaging devices cannot meet the miniaturization design of electronic equipment, etc.

Inactive Publication Date: 2020-08-28
NANCHANG OUFEI BIOLOGICAL IDENTIFICATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide an optical system, a receiving module and an electronic

Method used

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  • Optical system, receiving module and electronic equipment
  • Optical system, receiving module and electronic equipment
  • Optical system, receiving module and electronic equipment

Examples

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Effect test

no. 1 example

[0057] See figure 1 , figure 2 with image 3 , figure 1 It is a schematic diagram of the optical system 100 in the first embodiment. The optical system 100 includes a stop STO, a lens L1 with a positive refractive power, and an infrared band pass filter L2 in order from the object side to the image side.

[0058] The diaphragm STO is provided on the object side S1 of the lens L1. Specifically, the diaphragm STO can be formed by attaching a lens frame and a light barrier to the object side S1 of the lens L1. The object side surface S1 of the lens L1 is convex and aspherical. The lens L1 is formed on the object side of the infrared band pass filter L2 by embossing. The image side surface S2 of the lens L1 is a plane, that is, the image side surface S2 of the lens L1 can be regarded as a spherical surface with an infinite radius of curvature. Both the object side and the image side S3 of the infrared band pass filter L2 are flat surfaces. The image plane S4 is spaced apart from t...

no. 2 example

[0077] See Figure 4 , Figure 5 with Image 6 , Figure 4 It is a schematic diagram of the optical system 100 in the second embodiment. The optical system 100 includes a stop STO, a lens L1 with a positive refractive power, and an infrared band pass filter L2 in order from the object side to the image side.

[0078] The stop STO is provided on the object side of the lens L1 and is spaced apart from the lens L1. Specifically, the stop STO can be formed by fixing a lens frame or a light blocking plate to the object side of the lens L1. The object side surface S1 of the lens L1 is convex and aspherical. The lens L1 is formed on the object side of the infrared bandpass filter L2 by embossing. The image side surface S2 of the lens L1 is a plane, that is, the image side surface S2 of the lens L1 can be regarded as a spherical surface with an infinite radius of curvature. Both the object side and the image side S3 of the infrared bandpass filter L2 are flat surfaces. The image surfac...

no. 3 example

[0090] See Figure 7 , Picture 8 with Picture 9 , Figure 7 It is a schematic diagram of the optical system 100 in the third embodiment. The optical system 100 includes a lens L1 having a positive refractive power, a stop STO, and an infrared band pass filter L2 in order from the object side to the image side.

[0091] The diaphragm STO is arranged on the image side surface S2 of the lens L1, and the lens L1 includes a lens portion 110 and a coupling portion 120. The diaphragm STO is formed by a light shield surrounding the coupling portion 120. Specifically, refer to Figure 7 As shown, first, a layer of light shield 130 is provided on the object side of the infrared band pass filter L2, wherein the middle part of the light shield 130 transmits light. Then, the UV glue for manufacturing the lens L1 is stamped on the object side of the light shield 130, and a part of the UV glue is filled in the middle part of the light shield 130. Furthermore, ultraviolet light is used to cure...

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Abstract

The invention relates to an optical system, a receiving module and electronic equipment. The optical system includes, in order from an object side to an image side, a lens element with positive refractive power and an infrared band-pass optical filter that can filter visible light wave bands and transmit infrared wave bands, and the image side surface of the lens element is attached to the objectside surface of the infrared band-pass optical filter. Moreover, the object side surface of the lens element is the light incident surface of the optical system, the image side surface of the infraredband-pass filter is the light emergent surface of the optical system, and light enters the optical system from the object side surface of the lens element, then is emitted from the image side surfaceof the infrared band-pass filter, and is imaged on the imaging surface of the optical system. According to the optical system, only one lens element and one infrared band-pass filter are arranged, sothat the size of the optical system is small, and the requirement of miniaturization design of electronic equipment can be met when the optical system is applied to the electronic equipment.

Description

Technical field [0001] The invention relates to the field of three-dimensional imaging, in particular to optical systems, receiving modules and electronic equipment. Background technique [0002] TOF (Time of flight, time of flight) three-dimensional imaging device can obtain the depth information of the object to be measured, and is a commonly used three-dimensional imaging device. Among them, the TOF three-dimensional imaging device mainly includes a transmitting module and a receiving module. The light pulse emitted by the transmitting module is reflected by the object to be measured and received by the receiving module. The distance of the object to be measured is obtained by detecting the flight time of the light pulse , And then obtain the depth information to be measured. [0003] With the development of technology, users have higher and higher requirements for the miniaturization of electronic devices such as smart phones and tablet computers. The size of the optical syste...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18G03B11/00G02B7/02G01B11/24
CPCG01B11/24G02B7/02G02B13/0015G02B13/0025G02B13/0055G02B13/008G03B11/00
Inventor 黄怀毅冯坤亮李宗政
Owner NANCHANG OUFEI BIOLOGICAL IDENTIFICATION TECH
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