Abstract: Provided is a blind spot assist device capable of more easily showing the image of a blind-spot zone continuously with the image directly viewed by a viewer. The blind spot assist device shows the image of the blind-spot zone blocked by an obstacle, and is provided with a pair of parallel plane mirrors to which light representing the image is incident, the pair of parallel plane mirrors comprising a semitransparent plane mirror and a plane mirror opposed to each other. The semitransparent plane mirror is provided on the viewer side for reflecting part of the light and transmitting part of the light. The plane mirror reflects the light to the semitransparent plane mirror. The pair of plane parallel mirrors is provided in such a manner that the width in a direction perpendicular to the travel direction of the light decreases gradually toward the travel direction of the light.

Abstract: Provided is a blind spot assist device capable of easily adjusting the height of a reflector unit for enabling visual recognition of an image of a region forming a blind spot by being blocked by a pillar of a vehicle. A blind spot assist device is provided with a reflector unit having a pair of mirrors including a semi-transmissive mirror. The reflector unit causes an image to be visually recognized inside a vehicle with image representing light entering between the pair of mirrors that has passed through the semi-transmissive mirror. A blind spot assist device is provided with: a slide unit that enables the reflector unit to slide along a direction in which a pillar extends; and a lock unit that immobilizes the reflector unit with respect to the pillar in a lock state. The height of the reflector unit can be adjusted by placing the lock unit in the lock state after releasing the lock state of the lock unit and then sliding the reflector unit.

Abstract: Provided is a blind spot assist device capable of more easily showing the image of a blind-spot zone continuously with the image directly viewed by a viewer. The blind spot assist device shows the image of the blind-spot zone blocked by an obstacle, and is provided with a pair of parallel plane mirrors to which light representing the image is incident, the pair of parallel plane mirrors comprising a semitransparent plane mirror and a plane mirror opposed to each other. The semitransparent plane mirror is provided on the viewer side for reflecting part of the light and transmitting part of the light. The plane mirror reflects the light to the semitransparent plane mirror. The pair of plane parallel mirrors is provided in such a manner that the width in a direction perpendicular to the travel direction of the light decreases gradually toward the travel direction of the light.