What is a Telecentric Lens ?An important goal in machine vision applications is taking measurements in a consistent, accurate, and precise manner. This can include measuring the dimensions of manufactured parts to guarantee they are within the...
optical engineering
Mastering Spot Diagrams: Analyzing Optical System Quality | OFH
by Victor Argueta | FAQ, lens design, optical engineering, optics definitions
Introduction to Spot Diagrams As optical engineers, we use different tools and techniques to evaluate the performance of an optical design when simulating the system in a ray tracing program. One of those tools are spot diagrams. They may be a little bit confusing to...
Infrared and thermal optics material selection
by SergeySidorovich | lens design, optical engineering
The selection of optical materials is a critical step in the design of infrared optics. Traditional optical materials (optical glasses and plastics) used in the design of visible radiation optics aren’t suitable due to their high light absorption coefficient in the...
Datum Surface In Optical Drawings
by SergeySidorovich | optical design, optical engineering
Updated June 2020. Our recent post described how to read optical production drawings. One of the parameters frequently found in optical drawings, "Datum Surface," should be covered more closely. Datum definition As defined by both ISO and ANSI technical standards,...
Surface texture requirement in optical drawings
by SergeySidorovich | lens design, optical design, optical engineering, optics
Updated June 2020. In our previous article, we discussed how to read optical drawings while in this installment, we will focus on surface finish details. Optical lens performance can be heavily affected by the lens surface roughness. The surface texture symbols are...