Liquid drop eliminating device, control method thereof and image device

Abstract

The invention provides a liquid drop eliminating device, a control method thereof and an image device. The liquid drop eliminating device has a function of reliably and efficiently eliminating liquid drops which adhere on a light beam penetrating area of a circular roof type anti-liquid cover. For realizing the function, the liquid drop eliminating device is provided with components of an optical element (111) which is provided with the light beam penetrating area for penetration of the light beam for forming an optical image and is provided with a curve-surface-shaped circular roop part (123); a vibration applying component (120) which is arranged on a setting part and makes the circular roof part of the optical element generate bending vibration, wherein a setting part is connected with the curved surface of the roof part of the optical element and is formed by a surface with a curvature of zero in at least one direction; and a vibration control device (401) which controls the vibration applying component.

Description

technical field [0001] The present invention relates to a droplet removing device having a function of removing liquid droplets and the like attached to a light beam passing area, an image device having the droplet removing device, a method for controlling the droplet removing device, and a control program for the droplet removing device , the above-mentioned light beam passing region is used for the light beam for forming the optical image to pass through. Background technique [0002] Conventionally, an image device configured as follows has generally been put into practical use. The image device uses an imaging element or the like to sequentially perform photoelectric conversion on an optical image formed by an imaging optical system, transmits the image signal thus obtained to an image display device, and can use the image The display device performs display sequentially. [0003] And in recent years, by fixing and installing such imaging devices outdoors or indoors, so...

AI Technical Summary

Problems solved by technology

In addition, the mirror is formed of a flat surface, which is not a shape suitable for removing droplets when the mirror surface is placed in a direction close to the direction perpendicular to gravity

However, in the above-mentioned image device of the above-mentioned mode, the optical member to which the liquid droplet is attached must pass the light beam for forming the optical image, and the installation direction may also be the direction perpendicular to the gravity.

Therefore, there is a problem that the structure disclosed in the aforementioned Japanese Patent Laid-Open No. 3-114962 cannot be directly applied to an image device.

The erasing member intermittently crosses the light beam passing area through which the light beam used to form the optical image passes, so momentarily and periodically blocking the field of view occurs, so there is a problem that it prevents continuous shooting at all times.

In addition, since it is a structure in which droplets and the like are removed by sliding the wiper member relative to the cover member, abrasion occurs between the two.

Therefore, there is also a problem that, during long-term use, degradation of timeliness occurs, thereby deteriorating the droplet discharge function.

[0016] However, in the case of using a curved (dome-shaped) cover member, there is a problem that it is difficult to uniformly remove liquid droplets or the like attached to the cover member even if a wiping member is used, for example.

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