Asymmetric multiple constant radii of curvature convex mirrors

Patent metadata

Field	Value
Publication number	US-9604575-B2
Application number	US-201113286970-A
Country	US
Kind code	B2
Filing date	Nov 1, 2011
Priority date	Nov 1, 2006
Publication date	Mar 28, 2017
Grant date	Mar 28, 2017

Abstract

An asymmetrical mirror lens, usable on front fenders of school buses and similar vehicles, which has a plurality of mirror sections, each having a distinct constant radius of curvature to reduce image distortion. Optional sections located between sections of the constant radius of curvature have a step-wise changing radii of curvature to smooth the image sizes as an object moves across the mirror lens.

First claim

What is claimed is:

1. An asymmetric convex mirror lens, comprising:
a convex asymmetric three dimensional dome mirror lens having a surface, a peripheral edge which defines a width-wise extending axis and a height-wise extending axis and a plurality of sections of constant radius of curvature at the surface of the mirror lens and arranged width-wise along the mirror lens, including a first section having a first constant radius of curvature, located to a first side relative to the height-wise axis of the mirror lens and a second section having a second constant radius of curvature which is different from the first constant radius of curvature, located to a second side of the height-wise extending axis of the mirror lens,
wherein the dome mirror lens comprises a non-flat third section having a third constant radius of curvature at the surface of the mirror lens measured along at least one of the width-wise extending axis and the height-wise extending axis, and the third constant radius of curvature being different than the first and second constant radius of curvature of said convex asymmetric dome mirror lens, and wherein the third constant radius of curvature being positioned between the first and second constant radius of curvature, the third radius of curvature being larger than the first and second constant radius of curvature.

2. The asymmetrical mirror lens of claim 1 , wherein said convex mirror dome lens further comprises a first distance from the height-wise axis to a right edge of the mirror dome lens at the peripheral edge that is different than a second distance from the height-wise axis to a left edge of the mirror dome lens, producing an asymmetric lens surface.

3. The asymmetrical mirror lens of claim 1 , wherein the peripheral edge lying in a flat plane defines in that flat plane a closed curve which has a width and a height dimension, where the width dimension is measured along the width-wise axis and the height dimension is measured along the height-wise axis.

4. The asymmetrical mirror lens of claim 1 , wherein said convex mirror dome lens further comprises a cross-view mirror dome lens.

5. The asymmetrical mirror lens of claim 1 , further comprising:
a support panel secured to said convex mirror dome lens; and
a mounting structure attached to said support panel and adapted to be mounted to and external surface of a vehicle for viewing objects both in front of and alongside the vehicle or both in back of and alongside the vehicle.

6. The asymmetrical mirror lens of claim 1 , wherein said convex mirror dome lens further comprises:
a cross-view mirror dome lens;
a support panel secured to said convex mirror dome lens; and
a mounting structure attached to said support panel and adapted to be mounted to an external surface of a vehicle for viewing objects both in front of and alongside the vehicle or both in back of and alongside the vehicle.

7. The asymmetrical mirror lens of claim 1 , wherein the first, second and third sections are arranged width-wise along the mirror lens.

8. An asymmetric convex mirror lens, comprising:
a convex mirror lens having a peripheral edge which defines a width-wise extending axis and a height-wise extending axis and a plurality of sections of constant radius of curvature arranged width-wise along the mirror lens, including a first section having a first constant radius of curvature, located to a first side relative to the height-wise axis of the mirror lens and a second section having a second constant radius of curvature which is different from the first constant radius of curvature, located to a second side of the height-wise extending axis of the mirror lens,
wherein the mirror lens further comprises a third section having a constant radius of curvature measured along at least one of the width-wise extending axis and the height-wise extending axis; and
at least one fourth section comprising a substantially narrow strip of a changing curvature mirror surface joined with at least one of said first and second sections or said second and third sections producing a smoothly changing image size.

9. The asymmetrical mirror lens of claim 8 , wherein the first, second and third sections are arranged width-wise along the mirror lens.

10. The asymmetrical mirror lens of claim 9 , wherein the at least one fourth section is arranged vertically between the at least one of said first and second sections or said second and third sections.

11. An asymmetric convex mirror lens, comprising:
a convex mirror lens having a peripheral edge which defines a width-wise extending axis and a height-wise extending axis and a plurality of sections of constant radius of curvature arranged width-wise along the mirror lens, including a first section having a first constant radius of curvature, located to a first side relative to the height-wise axis of the mirror lens and a second section having a second constant radius of curvature which is different from the first constant radius of curvature, located to a second side of the height-wise extending axis of the mirror lens,
wherein the mirror lens further comprises a third section having a constant radius of curvature measured along at least one of the width-wise extending axis and the height-wise extending axis; and
at least one fourth section comprising a substantially narrow strip of a step-wise changing curvature mirror surface joined to, and in between, said first and third sections, producing a smoothly changing image size between said first and third sections.

12. The asymmetrical mirror lens of claim 11 , wherein the first, second and third sections are arranged width-wise along the mirror lens.

13. The asymmetrical mirror lens of claim 12 , wherein the at least one fourth section is arranged vertically between the first and the second sections.

14. An asymmetric convex mirror lens, comprising:
a convex mirror lens having a peripheral edge which defines a width-wise extending axis and a height-wise extending axis and a plurality of sections of constant radius of curvature arranged width-wise along the mirror lens, including a first section having a first constant radius of curvature, located to a first side relative to the height-wise axis of the mirror lens and a second section having a second constant radius of curvature which is different from the first constant radius of curvature, located to a second side of the height-wise extending axis of the mirror lens,
wherein the mirror lens further comprises a third section having a constant radius of curvature measured along at least one of the width-wise extending axis and the height-wise extending axis; and
at least one fourth section comprising a substantially narrow strip of a step-wise changing curvature mirror surface joined to, and in between, said second and third sections, producing a smoothly changing image size between said second and third sections.

15. The asymmetrical mirror lens of claim 14 , wherein the first, second and third sections are arranged width-wise along the mirror lens.

16. The asymmetrical mirror lens of claim 15 , further comprising at least one fifth section comprising a substantially narrow strip of at least one of a constant and changing curvature mirror surface arranged vertically between the second and third sections, producing a smoothly changing image size between said second and third sections.

17. An asymmetric convex mirror lens, comprising:
a convex asymmetric dome mirror lens having a peripheral edge which defines a width-wise extending axis and a height-wise extending axis, and a plurality of sections of c

Assignees

• Englander Benjamin
• Serer Julian
• Rosco Inc

Inventors

• Englander Benjamin
• Serer Julian

Classifications

• B60R1/002

  specially adapted for covering the peripheral part of the vehicle, e.g. for viewing tyres, bumpers or the like (integrated in the windows B60R1/001; combined with rear-view mirrors B60R1/08) · CPC title

• B60R1/06

  mounted on vehicle exterior {(B60R1/025, B60R1/08 take precedence)} · CPC title

• G02B5/10

  with curved faces · CPC title

• B60R1/082 Primary

  using a single wide field mirror or an association of rigidly connected mirrors · CPC title

• B60R1/08

  involving special optical features, e.g. avoiding blind spots {, e.g. convex mirrors; Side-by-side associations of rear-view and other mirrors (B60R1/025, B60R1/10 take precedence)} · CPC title