200°miniature super wide-angle fisheye lens optical system

Abstract

The invention discloses a 200-degree micro ultra-wide-angle fish-eye lens optical system. Along the direction of an optical axis, a first lens L1 with negative focal power, a second lens L2 with negative focal power, a third lens L3 with negative focal power, an aperture diaphragm 1, a fourth lens L4 with positive focal power, a fifth lens L5 with positive focal power, a sixth lens L6 with negative focal power and an optical filter 2 are sequentially arranged from an object plane to an image plane. According to the optical system, all the lenses are spherical lenses, and the lenses are reasonably matched according to the characteristics of the structures of all the lenses, so that the field angle of the lens reaches a 200-degree ultra-wide-angle range; simultaneous F-Theta distortion can be less than 10%, so that the edge deformation of the shot picture is relatively small, and the picture can be closer to the reality. The fish-eye lens optical system provided by the invention has theadvantages of large view field range, good image plane uniformity, good imaging quality and small size, and is suitable for processing and production.

Description

Technical field: [0001] The invention relates to an ultra-wide-angle optical imaging system, in particular to a 200° miniature ultra-wide-angle fisheye lens optical system. Background technique: [0002] With the development of optical lens and chip technology, due to the limitation of the field of view of the conventional lens, it can no longer meet the application of some occasions, such as security, monitoring lights and other fields. Therefore, in order to be able to monitor a wider range, it is often necessary to install several conventional lenses, which not only increases the cost of equipment, but also increases the cost of post-maintenance. However, if a super large field of view optical imaging system is applied, such as a fisheye lens system, it can capture a wider range than conventional lenses, because it has a field of view range that cannot be achieved by general optical systems (reaching or even exceeding 180°). , so it has the ability to project the scene r...

AI Technical Summary

Problems solved by technology

[0002] With the development of optical lens and chip technology, due to the limitation of the field of view of the conventional lens, it can no longer meet the application of some occasions, such as security, monitoring lights and other fields. Therefore, in order to be able to monitor a wider range, it is often necessary to install several conventional lenses, which not only increases the cost of equipment, but also increases the cost of post-maintenance

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