Goniophotometric Analysis of Luminaire Aging and Performance Degradation

Introduction
Goniophotometry is an effective measuring method that is vital to the study of luminaire deterioration and aging. The light output, light dispersion, and energy efficiency of lighting systems may all degrade over time due to changes in their optical characteristics.

By quantitatively measuring and analyzing the light distribution properties of luminaires, goniophotometric analysis enables this kind of evaluation. This article delves into the measuring theory of goniophotometry, as well as its applications in ensuring optimum lighting performance and monitoring luminaire aging and performance decline.

Principles of Goniophotometry in Luminaire Analysis
Goniophotometry is predicated on the idea that the angular distribution of a light source’s output may be measured and analyzed. To measure the intensity of light from different perspectives, goniophotometers include rotating the light source or repositioning the detector. This information is helpful for understanding how the luminaire’s light distribution changes over time and with use.

Degradation evaluation of critical performance characteristics such luminous intensity, beam angle, and light output is a main focus of goniophotometric investigation. The decline in these characteristics and the effect on illumination performance may be quantified by comparing the readings of a brand new and an old luminaire.

Analyzing Luminaire Aging and Performance Degradation
A goniophotometric analysis could be of use in gaining an understanding of the gradual degradation of luminaires over time and how this impacts their performance. The optical properties of luminaires may deteriorate with time as a result of factors such as changes in the material, the degradation of optical components, and the accumulation of dust or dirt.

A goniophotometer is able to identify and quantify a performance deterioration by measuring changes in the patterns of light distribution. These changes may be quantified using the instrument.

Using the collected data, parameters such as shifts in beam angles, temporal shifts in light output, and overall changes in luminous intensity distribution may be assessed.

This research demonstrates how the impacts of time have had an impact on the entire lighting performance of the luminaire. This information may be used by lighting technicians and designers to help them make informed decisions regarding the lighting system’s repairs, improvements, and potential increases in efficiency.

Applications in Maintenance and Asset Management
It is essential to conduct goniophotometric analysis when it comes to the management and maintenance of lighting systems. Measurements of luminaires using goniophotometry that are carried out on a consistent basis make it possible to compile data on the luminaires’ baseline performance, which can then be used to track variations over time. This makes it possible to make an early diagnosis of a reduction in performance and to put preventive maintenance measures into effect.

In the lighting sector, experts may employ goniophotometric analysis in order to zero in on the precise location inside a luminaire that is causing it to lose efficiency. It may be used to identify difficulties such as dirty or cracked lenses, misaligned optical components, and decreased reflectivity, among other potential problems. Using this information, certain actions may be taken to restore the performance of the luminaire, such as cleaning, realignment, or component replacement.

In addition, asset management may benefit from goniophotometric analysis since it offers objective data that can be used to make decisions on the replacement and retrofitting of lighting fixtures.

The rate of performance degradation is one of the factors that may be used to decide if it is more cost-effective to repair or replace older luminaires. By optimizing the lighting system’s use of its resources, this ensures the system’s operation over the long term as well as its energy efficiency.

LM-79 Moving Detector Goniophotometer (Mirror Type C) 

Quality Control and Standards Compliance
Goniophotometric analysis is vital for controlling quality and meeting regulatory requirements. Manufacturers may determine whether or not a luminaire meets quality requirements by comparing the measured light distribution to the luminaire’s original performance specifications. Variations in the way the light is distributed may be an early warning indicator of manufacturing flaws or operational problems.

Compliance with lighting performance requirements and standards is also aided by goniophotometric analysis. Luminaires must meet criteria for things like luminous intensity, beam angle, and color rendering that have been established by organizations like the International Commission on Illumination (CIE) and regulatory agencies like the International Electrotechnical Commission (IEC).

Quantitative information on whether or not luminaires conform to these requirements and achieve the desired performance levels may be obtained by goniophotometric measurements.

Once violations from the prescribed requirements have been identified, manufacturers may implement fixes using goniophotometry, which analyzes the light distribution properties of luminaires.

As a result, defects in the luminaires’ design or production that might reduce their efficacy or quality can be found and fixed before they are installed. This guarantees that the market receives only lighting products that consistently and reliably satisfy the required performance standards.

Goniophotometric analysis also helps improve and establish norms in the business world. Goniophotometry is useful because the information it provides may be used to evaluate and compare different lighting systems. As the lighting industry develops and new lighting solutions become available, goniophotometric measurements become more important for understanding their performance characteristics and capabilities, ultimately assisting in the revision of existing standards to account for these developments.

Future Trends and Advancements
The field of goniophotometry is undergoing evolution as a direct result of developments in technology as well as the need for more accurate evaluations of lighting fixtures. As new lighting technologies like solid-state lighting and intelligent lighting systems grow more widespread, goniophotometry is expected to assume an increasingly pivotal role in the lighting industry.

The combination of goniophotometry with other measurement techniques such as spectroradiometry and thermal imaging presents an exciting opportunity for future study and technological development. LISUN has best goniophotometers for this analysis.

When combined, these techniques allow for a more in-depth exploration of a luminaire’s spectral attributes, thermal behavior, and light distribution. When we consider all of these measurements together, we are able to gain a clearer image of how effective and efficient a light fixture is.

In the future, innovations in goniophotometric devices will allow for more precise and cost-effective assessments thanks to improvements in sensor technology, increased angular resolution, and faster data collection, to name just a few examples. As a consequence of this, it will be much simpler to ascertain the age of a light fixture as well as the degree to which its performance has deteriorated.

This will make it possible to carry out maintenance procedures in a more timely manner, which will result in an improvement in the overall quality of the lighting.

Conclusion
The goniophotometer is a fantastic tool for doing research on the ways in which the passage of time affects various types of lighting. In order to quantify performance changes and zero in on specific areas that need to be repaired or improved, it is required to measure and evaluate the light distribution characteristics of luminaires over time.

The lighting industry places a significant amount of importance on goniophotometry for a number of reasons, including the planning of maintenance, the management of assets, quality control, and adherence to standards.

In the distant future, goniophotometry will be necessary for many reasons, including the maintenance of optimal lighting performance, the increase of energy efficiency, and the fulfillment of industrial needs.

As time goes on, goniophotometry will be able to give insights into the aging of luminaires and performance deterioration that are more precise and complete as a consequence of technology improvements and integration with complementary measuring methods. This will be possible because of the combination of these two factors.

Lisun Instruments Limited was found by LISUN GROUP in 2003. LISUN quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international or national standards. All products passed CE certificate and authenticated by the third party lab.

Our main products are Goniophotometer, Integrating Sphere, Spectroradiometer, Surge Generator, ESD Simulator Guns, EMI Receiver, EMC Test Equipment, Electrical Safety Tester, Environmental Chamber, Temperature Chamber, Climate Chamber, Thermal Chamber, Salt Spray Test, Dust Test Chamber, Waterproof Test, RoHS Test (EDXRF), Glow Wire Test and Needle Flame Test.

Please feel free to contact us if you need any support.
Tech Dep: Service@Lisungroup.com, Cell/WhatsApp:+8615317907381
Sales Dep: Sales@Lisungroup.com, Cell/WhatsApp:+8618117273997