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Safety Training Requirements[edit | edit source]

Safety Issues With Method[edit | edit source]

Personal protective equipment[edit | edit source]

PPE is to keep YOU safe so that you can keep doing what you want to do.

  1. Safety glasses – always required
  2. Others

SDS and other[edit | edit source]

Knowing what chemicals are in the lab and how they interact with each other is critical when accidents happen.

  1. Appropriate SDS sheets should be viewed online.
  2. Note the hazards listed on the door to the lab. If you introduce any new equipment or materials you must clear them with the responsible person listed on the lab door. If the responsible person is out of date, contact the departmental administrators to get it updated.

Equipment Name[edit | edit source]

  1. 3D printed cosine corrector
  2. FAST lab, ECE, Western University

Calibration & Tolerances[edit | edit source]

For validation, the 3D printed cosine corrector was compared with the commercial one. To achieve this, we followed the instructions provided in Using Ocean Insight FLAME Spectrometer.

Operation & Procedure[edit | edit source]

A cosine corrector, also known as a cosine diffuser or cosine receiver, is a device used to measure the intensity of light or radiation coming from different angles of incidence with respect to the surface of the sensor.

When light strikes a flat surface at an angle, the effective area that captures the light decreases as the angle of incidence increases. As a result, the sensor's measured signal may not accurately represent the true intensity of the incident light, especially when the sensor has a directional sensitivity.

The cosine corrector consists of a diffusing element that scatters the incident light uniformly, making the sensor receive light from all directions equally, regardless of the angle of incidence. This ensures that the measured signal accurately represents the total radiant power falling on the sensor's surface, regardless of the light's direction.

A cosine corrector is used for the calibration of the Ocean view spectrometer.

Here, the size of the tool is similar to that of commercial peers, and it features a cylindrical design with a sphere inside to scatter the light. We have 3D printed a cosine corrector using SLA 3D printer and transparent resin. The design file can be found at

Shutdown[edit | edit source]

References[edit | edit source]

FA info icon.svg Angle down icon.svg Page data
Keywords safety, laboratory, fast methods
Authors Maryam Mottaghi
License CC-BY-SA-4.0
Organizations Free Appropriate Sustainable Technology, Western University
Language English (en)
Related 0 subpages, 3 pages link here
Impact 44 page views
Created July 30, 2023 by Maryam Mottaghi
Modified January 29, 2024 by Felipe Schenone
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