JP2017044722A5

JP2017044722A5 - Stereo optical system and imaging apparatus

Info

Publication number: JP2017044722A5
Application number: JP2015164571A
Authority: JP
Filing date: 2015-08-24
Publication date: 2018-09-20
Anticipated expiration: 2035-08-24

Description

本発明は、監視カメラや車載カメラにおいて被写体までの距離を測定する、もしくは３次元形状取得カメラで形状を取得するために適して用いられる広角な結像光学系を有したステレオ光学系および撮像装置に関する。 The present invention relates to a stereo optical system and an imaging apparatus having a wide-angle imaging optical system that is suitably used for measuring a distance to a subject in a surveillance camera or an in-vehicle camera, or acquiring a shape with a three-dimensional shape acquisition camera. About.

本発明の目的は、製造容易で小型なステレオ光学系および撮像装置を提供することにある。 An object of the present invention is to provide a stereo optical system and an imaging apparatus that are easy to manufacture and small.

上記目的を達成するため、本発明に係るステレオ光学系は、夫々が複数の反射面を備える第１及び第２の結像光学系と、前記第１及び第２の結像光学系の夫々における少なくとも一つの反射面を保持する共通の鏡筒部材を有することを特徴とする。 To achieve the above object, a stereo optical system according to the present invention comprises first and second imaging optical systems each comprises a plurality of reflecting surfaces, in each of the first and second imaging optical system It has a common lens barrel member that holds at least one reflecting surface .

また、本発明に係る撮像装置は、上記ステレオ光学系と、前記第１及び第２の結像光学系の夫々からの光を受光する第１及び第２の撮像素子を有することを特徴とする。 The imaging apparatus according to the present invention, the comprising: the above stereoscopic optical system, the first and second imaging element for receiving light from each of the first and second imaging optical system To do.

本発明によれば、製造容易で小型でかつ結像性能が高いステレオ光学系および撮像装置を提供することができる。 According to the present invention, it is possible to provide a stereo optical system and an imaging apparatus that are easy to manufacture, are small, and have high imaging performance.

Claims

First and second imaging optical systems each comprises a plurality of reflecting surfaces,
Wherein the first and the stereo optical system characterized by having a common barrel member for holding at least one reflecting surface in each of the second imaging optical system.

Stereo optical system according to claim 1 wherein the barrel member, characterized by being composed of a resin material or a glass material.

Stereo optical system according to claim 1 wherein the barrel member, characterized in that it is made of a metal material.

Of the first and second imaging optical systems , the first lens barrel member that holds one of the reflecting surfaces whose surface numbers are odd or even when counted from the object side, and the other The stereo optical system according to any one of claims 1 to 3, further comprising a second lens barrel member that holds the reflecting surface.

The stereo optical system according to any one of claims 1 to 3, wherein the lens barrel member holds a plurality of reflecting surfaces in each of the first and second imaging optical systems .

It said first and second husband imaging optical system s is stereoscopic optical system according to any one of claims 1 to 5, characterized in that it consists of a plurality of reflecting surfaces.

Wherein each of the first and second imaging optical system, a stereo optical system according to any one of claims 1 to 5, characterized in that a positive lens.

Wherein each of the first and second imaging optical system, to any one of claims 1 to 5, characterized in that it has a cemented lens of positive refractive power negative lens and a positive lens, which are joined The stereo optical system described.

It said first and second husband imaging optical system s is stereoscopic optical system according to any one of claims 1 to 8 and forming an intermediate image of the object.

The said barrel member has first and second apertures are provided for passing the light incident on each of the first and second imaging optical system, said first and second apertures are elliptical The stereo optical system according to any one of claims 1 to 9, wherein the stereo optical system has a shape.

A stereoscopic optical system according to any one of claims 1 to 10, further comprising a first and a second imaging element for receiving light from each of the first and second imaging optical system An imaging device that is characterized.

Wherein each of the first and second imaging devices, the imaging apparatus according to claim 11, characterized in that it is more retained in the barrel member.

Wherein each of the first and second imaging devices, the imaging apparatus according to claim 11 or 12, characterized in that it is possible imaging using light in the visible and near-infrared region.

The said barrel member has first and second apertures are provided for passing the light incident on each of the first and second imaging optical system, between the centers of the first and second openings when the distance D, and the distance between the centers of the imaging surface of each of the first and second imaging elements is d,
d ≦ D
The imaging apparatus according to any one of claims 11 to 13, characterized in that to satisfy the condition.

The said barrel member has first and second apertures are provided for passing the light incident on each of the first and second imaging optical system, between the centers of the first and second openings when the distance and D, and Od length on the reference axis from the center of the front Symbol first opening to the center of the imaging surface of the first imaging element,
D <Od × 2
The imaging apparatus according to any one of claims 11 to 14, characterized in that to satisfy the condition.

The said barrel member has first and second apertures are provided for passing the light incident on each of the first and second imaging optical system, between the centers of the first and second openings when the distance and D, and Od length on the reference axis from the center of the front Symbol first opening to the center of the imaging surface of the first imaging element,
0.10 <D / (Od × 2) <1.50
The imaging apparatus according to any one of claims 11 to 14, characterized in that to satisfy the condition.

The said barrel member and the first opening is provided for passing the light incident on the first imaging optical system, the center of the imaging surface of the first imaging device from the center of the first opening the half angle of definitive to cross section containing the reference axis to omega _H, when the half field angle in vertical cross section and omega _V in the cross section,
ω _V <ω _H
The imaging apparatus according to any one of claims 11 to 16, characterized in that to satisfy the condition.

The said barrel member has first and second apertures are provided for passing the light incident on each of the first and second imaging optical system, between the centers of the first and second openings Where D is the distance and Sd is the diagonal length of the respective imaging surfaces of the first and second imaging elements,
3.0 <D / Sd <50.0
The imaging apparatus according to any one of claims 11 to 17, characterized in that to satisfy the condition.

The said barrel member has first and second apertures are provided for passing the light incident on each of the first and second imaging optical system, the first opening, the first Any of a plurality of reflecting surfaces in the imaging optical system and an imaging surface of the first imaging element, the second opening , a plurality of reflecting surfaces in the second imaging optical system , and the second When the minimum interval among the intervals with any one of the imaging surfaces of the imaging element is αd, and the diagonal length of each imaging surface of the first and second imaging elements is Sd,
0.1 <αd / Sd <3.0
The imaging apparatus according to any one of claims 11 to 18, characterized in that to satisfy the condition.