Image capture system and imaging optical system

Abstract

An image capture system including two imaging systems of the same structure each having a wide-angle lens, which includes a front group, a reflection surface, and a rear group arranged in order from an object side, has a field angle larger than 180 degrees, and bends an optical axis of the front group toward the rear group by the reflection surface, and an imaging sensor, obtains an image in a solid angle of 4pi radian by combining images imaged by the imaging systems. Each of the two wide-angle lenses includes the reflection surface between the front group and the rear group, the reflection surfaces are made to be common to the two imaging systems. This reduces an interval between lenses nearest to the object side in the front groups of the two wide-angle lenses, thereby reducing a distance between maximum field angles of the two wide-angle lenses.

Description

technical field [0001] The present invention relates to image capture systems and in particular omnidirectional image capture systems, and imaging optics. Background technique [0002] As an image capture system that captures images omnidirectionally at the same time, there is known one that uses two wide-angle lenses (refer to Japanese Patent Application Laid-Open No. 2010-271675 and Japanese Patent No. 3290993). [0003] This omnidirectional image capture system can simultaneously acquire image information in all directions (with a solid angle of 4π radians), and thus can be effectively used in security surveillance cameras, vehicle cameras or the like. [0004] For example, in news reporting or similar fields, it is necessary to record high-precision, high-quality image information in "hand-held conditions" using a small-sized omni-directional image capture system. [0005] An omnidirectional image of weather conditions can be captured and used to analyze weather informa...

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Problems solved by technology

This causes the imaging element to move substantially

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