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Wide-angle imaging optical system, and wide-angle imaging device, monitoring imaging device, on-vehicle imaging device, and projection device with the wide-angle imaging optical system

A technology of optical system and imaging optics, which is applied to the parts, optics, and optical components of the TV system, and can solve the problems of large, complex and large devices of the main lens

Inactive Publication Date: 2005-02-23
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, the main lens becomes large and complex
[0009] The panoramic imaging device of WO00 / 41024 requires a relay optical system to form an intermediate image in the optical system, which increases the length of the entire optical system, resulting in a larger device

Method used

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  • Wide-angle imaging optical system, and wide-angle imaging device, monitoring imaging device, on-vehicle imaging device, and projection device with the wide-angle imaging optical system
  • Wide-angle imaging optical system, and wide-angle imaging device, monitoring imaging device, on-vehicle imaging device, and projection device with the wide-angle imaging optical system
  • Wide-angle imaging optical system, and wide-angle imaging device, monitoring imaging device, on-vehicle imaging device, and projection device with the wide-angle imaging optical system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0144] figure 1 A schematic cross-sectional view taken along a plane including the central axis 9 showing the basic configuration of the wide-angle imaging device of Embodiment 1 of the present invention. figure 2 is a side view of the essential parts of the device. image 3 is along figure 2 The view from the direction of arrow A in the middle. Figure 4 is a perspective view of the basic parts of the device. figure 1 The wide-angle imaging device includes a refractive optical system 3 , a reflective optical system composed of a first reflective surface 1 and a second reflective surface 2 , and an image forming optical system 5 . The center axis 9 joins the center of curvature of the first reflective surface 1 and the center of curvature of the second reflective surface 2 .

[0145] figure 1 The optical system of the wide-angle imaging device includes a first optical system and a second optical system. For the first optical system, a reflective optical system and an i...

Embodiment 2

[0158] Image 6 with 7 A schematic cross-sectional view taken along a plane including the central axis 9 showing the basic configuration of the wide-angle imaging device of Embodiment 2. In basic configuration, this embodiment and embodiment 1 ( Figure 1 to Figure 5 ) are the same, but differ in that a third reflective surface 61 having a flat reflective surface is provided in the optical path between the image forming optical system 5 and the imaging device 7 .

[0159] exist Image 6 In, the incident light 8a from the outside is refracted by the refractive optical system 3, passes through the light-transmitting portion 2a provided in the second reflective surface 2 and the opening 1a provided in the first reflective surface 1, and is then formed by the image forming optical system 5 is imaged, reflected by the third reflective surface 61 in one direction, and picked up by the imaging device 7. Incident light 8b from the outside is continuously reflected by the convex su...

Embodiment 3

[0163] Figure 9 A schematic cross-sectional view taken along a plane including the central axis 9 showing the basic configuration of the wide-angle imaging device in Embodiment 3. In basic configuration, this embodiment and embodiment 1 ( Figure 1~5 ) are the same, but the difference is that the third reflective surface is curved.

[0164] exist Figure 9 In, the incident light 8a from the outside is refracted by the refractive optical system 3, passes through the light-transmitting portion 2a provided in the second reflective surface 2 and the opening 1a provided in the first reflective surface 1, and then is formed by the image forming optical system 5 is imaged, reflected in one direction by the third reflective surface 91 having a reflective curved surface, further imaged by the image forming optical system 5, and picked up by the imaging device 7. Incident light 8b from the outside is continuously reflected by the convex surface of the first reflective surface 1 and ...

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Abstract

A wide-angle imaging optical system includes a refractive optical system (3), a reflective optical system, and an image-forming optical system (5). The reflective optical system includes a first reflection surface (1) that directly reflects rays of light from an object, and a second reflection surface (2) that reflects rays of light from the first reflection surface (1). An open portion is provided between the first reflection surface (1) and the second reflection surface (2), and rays of light from the object enter the open portion. A light-transmitting portion (2a) is provided in the second reflection surface (2) and transmits rays of light that have entered the refractive optical system (3). An aperture (1a) is provided in the first reflection surface (1) and allows rays of light from the second reflection surface (2) and the refractive optical system (3) to enter the image-forming optical system (5).

Description

technical field [0001] The present invention relates to a wide-angle imaging device, which can generate a panoramic image covering an ultra-wide range by using a combination of several reflective surfaces and a combination of several lenses. Background technique [0002] Various researches and developments have been conducted for wide-angle imaging devices to efficiently generate images of objects in a large area. An example is the development of wide-angle cameras with fisheye lenses. [0003] JP 10(1998)-54939 A (reflective viewing angle conversion optical device and optical system using the same) proposes a system for producing a wide-field image by variously changing the shapes of three mirror surfaces disposed opposite to each other. JP 2000-4383 A (Multidirectional Image Pickup Device) proposes an optical system that produces a counter image within a normal image by using the shaft of a panoramic image block as a lens. [0004] JP 2001-94839 A (Wide-field image picku...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/06G02B17/06G02B17/08G02B27/00
CPCG02B17/061G02B27/0018G02B17/0694G02B13/06H04N23/00
Inventor 松木大三郎吉川智延山本义春
Owner PANASONIC CORP
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