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

Lens unit and infrared lens unit for mounting on vehicle

A lens unit, infrared technology, applied in optical components, instruments, installation, etc., can solve the problems of reduction, unclear image performance, etc., and achieve the effect of easy assembly

Active Publication Date: 2011-10-26
SUMITOMO ELECTRIC IND LTD
View PDF8 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, there is a problem that the performance of the infrared imaging device decreases, such as that the image captured by the imaging element becomes unclear, and a countermeasure to avoid this problem is sought.

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
  • Lens unit and infrared lens unit for mounting on vehicle
  • Lens unit and infrared lens unit for mounting on vehicle
  • Lens unit and infrared lens unit for mounting on vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0115] Hereinafter, the present invention will be specifically described based on drawings showing embodiments of the present invention. figure 1 It is a schematic diagram showing an example of a vehicle equipped with an infrared imaging device. In the figure, 1 is a vehicle, and an infrared imaging device 3 is mounted on the front part of the vehicle body of the vehicle 1 (for example, near a front bumper). The infrared imaging device 3 is capable of receiving infrared rays to take an image, and outputs an image obtained by the imaging to an ECU (Electronic Control Unit) 5 mounted on the vehicle 1 .

[0116] The ECU 5 is mounted in an appropriate part of the vehicle 1 , and performs various image processing on the image distributed from the infrared imaging device 3 and displays the image on the display 7 . The monitor 7 is mounted near the driver's seat of the vehicle 1 and displays images distributed from the ECU 5 . In addition, the ECU 5 may perform a process of detect...

Embodiment approach 2

[0178] Figure 16 It is a schematic cross-sectional view showing the configuration of the vehicle-mounted infrared lens unit 204 according to Embodiment 2 of the present invention. In the vehicle-mounted infrared lens unit 204 according to the second embodiment, the first infrared lens 210 , the spacer 240 , and the second infrared lens 220 are inserted into the lens barrel 230 similarly to the vehicle-mounted infrared lens unit 4 according to the first embodiment. . These components are held in the lens barrel 230 by being pushed by the lens pusher 250 .

[0179] The first infrared lens 210 and the second infrared lens 220 are disk-shaped convex-convex lenses having a convex surface on the front side and a concave surface on the back side. In addition, the peripheral portion of the second infrared lens 220 is formed smoothly together with the front and back, and the peripheral portion of the first infrared lens 210 is formed smoothly on the front side. The first infrared le...

Embodiment approach 3

[0199] Figure 18 It is a schematic cross-sectional view showing the configuration of the vehicle-mounted lens unit 304 according to Embodiment 3 of the present invention. The vehicle-mounted infrared lens unit according to the first and second embodiments described above includes two infrared lenses, and the thermal expansion of the spacer pushes the first infrared lens to move in the lens barrel. On the other hand, since the vehicle-mounted infrared lens unit 304 according to Embodiment 3 includes only one infrared lens 310 , it does not include a spacer provided between the two infrared lenses. In the vehicle-mounted infrared lens unit 304 according to Embodiment 3, the infrared lens 310 is inserted into the lens barrel 330 , pressed by the lens pusher 350 and the spring member (pressing member) 370 to be held in the lens barrel 330 .

[0200] The infrared lens 310 is a disk-shaped convex-convex lens having a convex surface on the front side and a concave surface on the ba...

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

No PUM Login to View More

Abstract

The present invention provides a lens unit and an infrared lens unit for mounting on a vehicle, which do not cause an increase in the size of a device, do not make a manufacturing process complex, do not increase costs, and can correct displacement of a focal point caused by a change in temperature. An infrared lens unit (4) for mounting on a vehicle, configured in such a manner that infrared lenses are supported by a lens barrel (30) and that a spacer (40) is mounted between two infrared lenses, wherein a first infrared lens (10) is sandwiched and held between the spacer (40) and a lens holding section (31) of the lens barrel (30). The spacer (40) and the lens barrel (30) consist of materials having different coefficients of thermal expansion. An O-ring (60) is provided between an engaging section (32) of the lens holding section (31) and the first infrared lens (10). The first infrared lens (10) can be moved in the axial direction against elastic force of the O-ring (60) by thermal expansion of the spacer (40). When the spacer (40) is contracted, the first infrared lens (10) can be moved in the opposite direction by the elastic force of the O-ring (60).

Description

technical field [0001] The present invention relates to a lens unit in which one or a plurality of lenses are held in a lens barrel, and to a vehicle-mounted infrared lens unit provided in an infrared camera mounted on a vehicle for nighttime imaging. Background technique [0002] In recent years, infrared imaging devices that capture images by receiving infrared rays have become popular. For example, a night vision system that mounts an infrared imaging device on a vehicle to capture images of the surroundings of the vehicle at night, detect pedestrians who may collide, and warn the driver is being put into practical use. The infrared imaging device includes an infrared lens for transmitting and focusing infrared rays, and an infrared imaging element for receiving infrared rays, and performs imaging. [0003] In such an imaging device, in many cases, one or a plurality of imaging lenses are held in a cylindrical lens barrel to form a unit in order to facilitate manufacture...

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): G02B7/02
CPCG02B7/021G02B7/028G02B13/14
Inventor 寺冈宽二藤井明人泉达也
Owner SUMITOMO ELECTRIC IND 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