SAFETY CONFIRMATION MIRROR

• US 20130194686A1
• Filed: 10/13/2011
• Published: 08/01/2013
• Est. Priority Date: 10/20/2010
• Status: Active Grant

• Current Assignee: Komy Co., Ltd
• Original Assignee: Komy Co., Ltd
• Inventors: Komiyama, Sakae, Takeda, Hisanaga, Iwata, Yoshiyuki, Nishiyama, Hiroshi, Machida, Katsumi
• Granted Patent: US 9,201,177 B2
• Time in Patent Office: Days
• US Class Current: 359/851
• CPC Class Codes: G02B 5/09 Multifaceted or polygonal mirrors , e.g. polygonal scanning mirrors; Fresnel mirrors
• CPC Class Codes: G02B 5/1861 Reflection gratings characterised by their structure, e.g. step profile, contours of substrate or grooves, pitch variations, materials G02B5/1809, G02B5/1828, G02B5/1833, G02B5/1838 and G02B5/1847 take precedence
• CPC Class Codes: G02B 5/1876 Diffractive Fresnel lenses; Zone plates; Kinoforms G02B5/1842, G02B5/1847 take precedence; optical systems having diffractive correction means G02B27/0037; Fresnel lenses operating by refraction G02B3/08

Abstract

Provided is a safety confirmation mirror whereby a blind spot near a corner of a passageway can be easily seen more clearly. The safety confirmation mirror includes, as a reflective surface (2), a portion of a Fresnel mirror (3) offset to one side of the widthwise center (C1). Accordingly, when the safety confirmation mirror is installed on a wall surface of a passageway at a T-shaped, L-shaped, or cross intersection, the reflective surface 2 reflects the blind spot of a passageway in one direction that a person is going to turn, and the person can see the conditions thereof. Moreover, the reflective surface 2 does not reflect the conditions in the unnecessary direction. Accordingly, the person looking at the safety confirmation mirror (1) is not confused by the unnecessary image and can easily see the blind spot near the corner of the passageway more clearly.

Claims

1. A safety confirmation mirror, characterized in that the mirror comprises, as a reflective surface, a portion of a Fresnel mirror being offset to one side of the widthwise center of the Fresnel mirror.

2. The safety confirmation mirror according to claim 1, wherein the distance between an opposite-side edge of the reflective surface and the widthwise center of the Fresnel mirror is not more than 100 mm.

3. The safety confirmation mirror according to claim 1 or 2, wherein the safety confirmation mirror is installed so that the opposite-side edge of the reflective surface is located on the same side of the widthwise center of a passageway which ends at a far end wall surface at a T-shaped or L-shaped intersection as the direction that the reflective surface is offset in the Fresnel mirror, and is located closer to the widthwise center of the passageway than a one-side edge of the reflective surface is.

4. The safety confirmation mirror according to claim 1 or 2, wherein the safety confirmation mirror is installed near a corner of a wall surface of a passageway which ends at a far end wall surface at a T-shaped intersection or near a corner of a wall surface of a passageway constituting a cross intersection so that the opposite-side edge of the reflective surface is located closer to the corner than a one-side edge of the reflective surface is.

5. The safety confirmation mirror according to claim 1 or 2, wherein the opposite-side edge of the reflective surface coincides with the widthwise center of the Fresnel mirror.

6. The safety confirmation mirror according to claim 1 or 2, further comprising a display portion provided on a front surface of the mirror, and configured to indicate the direction of the one-side edge of the reflective surface.

7. The safety confirmation mirror according to claim 6, the display portion includes an arrow.

8. The safety confirmation mirror according to claim 1 or 2, further comprising a display portion provided on a front surface of the mirror, and configured to show an alert.