Why objects seem different in different light sources?

Living room objects in warm and cool white LED lights. Image source: integral-led

What is full spectrum light?
Full-spectrum source produces light throughout the entire visible spectrum. It is a neutral white light that has power distribution in all visible color wavelengths from 400 to 700nm.


Spectral distribution of different indoor light sources
Image source: Kim, Soyeon & Jahandar, Muhammad & Jeong, Jaehoon & Lim, Dong. (2019). Recent progress in solar cell technology for low-light indoor applications. Current Alternative Energy. 03.

Why objects seem different in different light sources?

Not all white light sources are perfectly white. They have different color power distribution in uneven white spectrum, often correlated by color temperature: cool or warm. Object absorbs or reflects colors depending on its own color properties and the color distribution of the applied light source. Objects appear redder under the illumination of warm white LEDs or in light during sunrise. Same way, objects seem bluer under cool white LEDs or in midday sunlight. Hence it becomes very important to carry out color measurement by using standard independent light source.


Sensegood Spectrophotometer
To achieve true color reflected from the object, balanced white light source must be applied. Sensegood Spectrophotometer is equipped with robust light source – Complementary compensating full spectrum long life 98+ CRI LEDs to take care uneven spectral power distribution of artificial light sources. Further spectral balancing is achieved by firmware algorithms.

Learn more about most affordable yet technologically advanced color measurement instruments:


Author:
Sanket Patel, Ph.D. Electronics
Dr. Sanket Patel is IEEE award winning researcher, technopreneur and a technology enthusiast
Location: 6B Arlington St, St. James's, London SW1A 1RE, UK

Comments

Post a Comment

Popular posts from this blog

Sensegood spectrophotometer for quality and consistency control in beverages and food products

Image
   Sensegood Color Spectrophotometer Colorimeter Difference Consistency Matching Measurement Instrument Video will open in a new window Using the mobile app? Copy this link into your browser:     Set color tolerance, find color difference and color matching % using Sensegood spectrophotometer Video will open in a new window Using the mobile app? Copy this link into your browser:       Color measurement using handheld spectrophotometer by Sensegood Instruments Video will open in a new window Using the mobile app? Copy this link into your browser:   This instrument is most affordable yet technologically advanced.  -  Patented Technology Price includes worldwide freight. Measure color, color consistency, color difference in honey mustard, peanut butter, tomato ketchup, mayonnaise, cheese cream, hummus, chocolate syrup, jams or any other salad dressings or condiments. Color is the first thing that customers see in a fruit juice. It is an ind...
Read more

sensegood color spectrophotometer

Image
   Greetings!  J   Sensegood Instruments offers a benchtop or table top yet portable color spectrophotometer. The same instrument visible vis spectrophotometer works as a full spectrum handheld portable digital colorimeter, photo colorimeter, photoelectric colorimeter, color meter, color spectrometer, color analyzer instrument, color difference meter, color matching machine, whiteness meter tester, or color spectrum measurement instrument in general that assists you in optimizing the color quality & consistency of your product. This industrial and laboratory spectrophotometer instrument works on a principle of true color LED beam reflectance spectrophotometry; and it comes at a most affordable price. The world is color. We understand exactly why the color is important for you. Achieving right color requires first measuring it accurately. Ensure color quality and consistency of your product using Sensegood Spectrophotometer. Sensegood Colorimeter Spectrophotometer...
Read more

Coffee Roast Color Meter Colorimeter Portable Coffee Color Analyzer

Image
  Affordable Coffee Roast Analyzer Measure SCAA Agtron Coffee Colorimeter Sensegood Spectrophotometer Video will open in a new window Using the mobile app? Copy this link into your browser: World's Most Affordable Patented Color Analysis Instruments by Sensegood This instrument is most affordable yet technologically advanced.  -  Patented Technology Price includes worldwide freight. Color measurement and ingredient quality - consistency control in coffee products ? Measure Agtron Number and do more with Sensegood spectrophotometer When it comes to coffee taste each one of us become very selective. The amount of caffeine ? which people perceive as coffee strength, depends on brewing and roasting. Roasting significantly alters the taste; hence color directly reflects coffee flavor. Coffee roast index is standardized by SCAA (Specialty Coffee Association of America) and represented by Agtron number. Following picture narrates typically how Agtron number is assigned against t...
Read more