Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Infrared optical system, infrared receiving module and electronic equipment

An infrared optical system and module technology, applied in optics, optical components, instruments, etc., can solve problems such as difficulty in meeting high-precision detection requirements, low imaging brightness, and difficulty in meeting market demand for module detection performance

Active Publication Date: 2021-08-24
JIANGXI JINGCHAO OPTICAL CO LTD
View PDF18 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, if the spatial receiving range of the receiving module for light is too narrow, the spatial detection range will be too small; if the light passing through the receiving module is insufficient, the imaging brightness will be too low, making it difficult to meet the high-precision detection requirements
However, traditional receiving modules are often difficult to balance a large field of view and sufficient light transmission, resulting in too narrow a receiving range of the receiving module or poor imaging, making it difficult for the detection performance of the module to meet market demand

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Infrared optical system, infrared receiving module and electronic equipment
  • Infrared optical system, infrared receiving module and electronic equipment
  • Infrared optical system, infrared receiving module and electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0083] refer to figure 1 , in the first embodiment, the infrared optical system 10 includes an aperture stop STO, a first lens L1 with positive refractive power, a second lens L2 with positive refractive power, and a second lens L2 with positive refractive power along the optical axis 101 from the object side to the image side The third lens L3 with negative refractive power. Each lens surface type of optical system 10 is as follows:

[0084] The object side S1 of the first lens L1 is convex at the near optical axis, and the image side S2 is convex at the near optical axis; the object side S1 is concave near the maximum effective aperture, and the image side S2 is convex near the maximum effective aperture .

[0085] The object side S3 of the second lens L2 is concave at the near optical axis, and the image side S4 is convex at the near optical axis; the object side S3 is concave near the maximum effective aperture, and the image side S4 is convex near the maximum effective ...

no. 2 example

[0106] refer to image 3 , in the second embodiment, the infrared optical system 10 includes an aperture stop STO, a first lens L1 with positive refractive power, a second lens L2 with positive refractive power, and a second lens L2 with positive refractive power along the optical axis 101 from the object side to the image side The third lens L3 with negative refractive power. Each lens surface type of the infrared optical system 10 is as follows:

[0107] The object side S1 of the first lens L1 is convex at the near optical axis, and the image side S2 is convex at the near optical axis; the object side S1 is concave near the maximum effective aperture, and the image side S2 is convex near the maximum effective aperture .

[0108] The object side S3 of the second lens L2 is concave at the near optical axis, and the image side S4 is convex at the near optical axis; the object side S3 is concave near the maximum effective aperture, and the image side S4 is convex near the maxi...

no. 3 example

[0120] refer to Figure 5In the third embodiment, the infrared optical system 10 includes an aperture stop STO, a first lens L1 with positive refractive power, a second lens L2 with positive refractive power, and a second lens L2 with positive refractive power along the optical axis 101 from the object side to the image side in sequence The third lens L3 with positive refractive power. Each lens surface type of the infrared optical system 10 is as follows:

[0121] The object side S1 of the first lens L1 is convex at the near optical axis, and the image side S2 is convex at the near optical axis; the object side S1 is concave near the maximum effective aperture, and the image side S2 is convex near the maximum effective aperture .

[0122] The object side S3 of the second lens L2 is concave at the near optical axis, and the image side S4 is convex at the near optical axis; the object side S3 is concave near the maximum effective aperture, and the image side S4 is convex near...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
angleaaaaaaaaaa
optical path lengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to an infrared optical system, an infrared receiving module and electronic equipment. An infrared optical system includes, in order from an object side to an image side along an optical axis: a first lens element with positive refractive power having an object-side surface being convex in a paraxial region and being concave in a region near a maximum effective aperture; a second lens element with refractive power having a concave object-side surface in a paraxial region thereof; and a third lens element with refractive power having a concave image-side surface in a paraxial region thereof, both of the object-side surface and the image-side surface thereof being aspheric, and at least one of the object-side surface and the image-side surface thereof being retroflexure, wherein the infrared optical system also satisfies the following relation: 1.0 mm<-1><=FNO / f<=1.2 mm<-1>, FNO is the aperture number of the infrared optical system, and f is the effective focal length of the infrared optical system. The infrared optical system not only can have a larger field angle, but also can have a larger light flux, so that a larger receiving range and better imaging quality can be obtained.

Description

technical field [0001] The invention relates to the technical field of photography and imaging, in particular to an infrared optical system, an infrared receiving module and electronic equipment. Background technique [0002] In recent years, with the rapid development of optical detection technologies such as TOF (Time of flight, time of flight), LIDAR (Light Detection and Ranging, laser detection and ranging), optical detection technology is widely used in smart phones, smart watches, automatic driving, industrial Machine vision, security monitoring and other fields have been widely popularized. Optical detection technology (such as the above-mentioned TOF and LIDAR) is generally active detection, which emits infrared light to the measured object and captures the light reflected by the measured object to obtain the depth information of the measured object. Face recognition, road condition recognition, etc. [0003] But in these technologies, in addition to the emitting m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0015G02B13/0035G02B13/008
Inventor 邹金华杨健李明
Owner JIANGXI JINGCHAO OPTICAL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com