Electronic Thesis and Dissertation Repository


Master of Engineering Science


Mechanical and Materials Engineering


Remus Tutunea-Fatan

2nd Supervisor

Evgueni Bordatchev

Joint Supervisor


The optical phenomenon of retroreflection (RR) is described as light rays contacting a surface and being redirected back to their originating source. While applications are many and varied, their primary focus is safety in low-light conditions, and the focus of this research is toward automotive applications. Few geometric shapes are capable of retroreflection. Among them are the lens-and-mirror, and cube corner geometry; however, the right triangular prism (RTP) has been introduced as a viable alternative. This study demonstrates a more efficient fabrication technology when compared to current industry practices.

The ultraprecise single point inverted cutting (USPIC) technology was envisioned as a combination of diamond turning and multi-axis machining. The unique cutting kinematics of USPIC required the development of dedicated tooling and a postprocessor for machine automation. Experimental results have demonstrated both the feasibility of this approach, and that RTP arrays fabricated by this technology outperform those fabricated through conventional means.

Included in

Manufacturing Commons