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Opto-Cal's History of Excellence

Opto-Cal was founded in 1990 with a commitment to provide service of the highest accuracy, quality and customer support. We have managed to develop an exemplary reputation for meeting these commitments while maintaining low prices and short turnaround times. The Senior Staff at Opto-Cal offer over 100 years of combined experience in the fields of optical calibration and measurements. We understand instrumentation to the component level and have extensive application experience.

Opto-Cal is a small company which permits a great deal of flexibility on issues like scheduling and services offered. Opto-Cal offers custom calibration services which often significantly improve measurement accuracy for a specific application. Large companies generally can't afford to perform custom services as they are not time or cost effective. Usually special fixtures, standards or procedures are required. We enjoy these challenges.

If you have an optical calibration or measurement requirement, custom or standard, give us a call. We will be glad to tell you about our standard services, make suggestions for a specific requirement, or discuss your ideas.



ISO/IEC-17025:2017 Accredited - A2LA Certificate No. 6198.01

Opto-Cal, is a A2LA ISO/IEC-17025:2017 accredited laboratory.  For over 30 years, Opto-Cal has been host to auditors from a diverse array of industries, including: Aerospace & Defense, Pharmaceutical Science, Nuclear Energy, Public Utilities, and countless other private and public companies.  Opto-Cal is proud to have an unblemished record of successful audit completion since our inception in 1990.  

Upon visiting the Opto-Cal labs, one NIST scientist stated, "This lab is as good as many of national laboratories I 've seen."  



OVER 100 YEARS of Experience

Opto-Cal's Senior Metrologists bring over 100 years of combined industry experience to the laboratory, offering an unmatched attention to detail and wealth of knowledge. From R & D to manufacturing, to sales, to design, Opto-Cal's staff understands instrumentation down to the component level.  Whether your calibrations needs are for a simple light meter or a complex source characterization, Opto-Cal is your one-stop-shop for all of you calibration requirements. 

Opto-Cal is an approved vendor for many of the largest and most successful aerospace, defense, energy, and pharmaceutical companies on the planet.  With unique optical metrology experience across a diverse range of clientele, customer's can be confident that Opto-Cal possesses the experience necessary to meet all of their optical calibration needs. 



DIRECTLY N.I.S.T. Traceable Calibrations

All Opto-Cal standard calibrations are directly N.I.S.T. traceable, and include "Before" and "After" data.  

Opto-Cal has multiple directly N.I.S.T. supplied redundant standards in it's calibration standard arsenal, affording the ability to be a self-contained laboratory.  With these multiple redundant standards, Opto-Cal can assure accuracy, repeatability, and reliability in all facets of the calibration cycle.  Through annual laboratory intercomparison of multiple N.I.S.T. supplied primary standards, Opto-Cal maintains the highest of calibration quality standards possible.  In addition to routine in-house laboratory intercomparison, Opto-Cal will, on occasion, participate in calibration sample comparisons with other laboratories either through customer requests, or simply as another means of quality assurance. 





Since the inception of Opto-Cal in 1990, typical turn times have consistently averaged 3-5 working days.  Since Opto-Cal's sole focus is calibration services, customer service and quality work in a timely manner are the primary focus of the Opto-Cal business model.  Opto-Cal is free-standing business unbeholden to any manufacturers or parent companies.  Opto-Cal does not sell anything but calibration services, which allows for unique and time tested relationships with various OEMs. 

3-Day Expedite calibration service is available upon request.

Have an emergency and need a faster turn, give Opto-Cal a call and see what can be arranged. 






  • Displays & Sources:  CRT, Electroluminescent, Filtered Tungsten, Fluorescent, LCD, LED, Plasma, Tungsten and Ultraviolet.
  • Filters:  Bandpass, Color Correcting, Cut-On, Cut-Off, and Neutral Density.
  • Materials:  Reflectance, Fluorescence, Phosphorescence, and Transmission.
  • Special Devices:  If you are in a need of evaluation for customer instrumentation, please call for a consult.


  • Absolute:  Color, Color Temperature, Illuminance, Luminance, Luminous Intensity, Irradiance, Spectral Radiance, Spectral Irradiance. 
  • Relative:  Contrast, Daylight Readability, and Spacial Uniformity.  
  • Absolute:  Chromaticity, NVIS Compatibility, Photometric Transmission, Spectral Transmission, Photometric Reflectance, Spectral Reflectance, Radiance, Spectral Radiance, Irradiance. Spectral Irradiance.

*Opto-Cal has spectroradiometers, which allow measurements in the UV, VIS, and NIR spectrums at intervals of +/- 1.0nm.  Narrow band filters are used for wavelengths from 1100-1800nm at 50nm intervals and for specific laser and other discrete wavelengths (IE: Hg lines).



Do you have a non-standard or complex calibration that you need performed?  Give us a call and we'll discuss with you the technical intricacies and develop a calibration plan that suits your needs.  If we cannot accommodate your specific calibration requirements, we'd be happy to make recommendations for other laboratories that can.  Give us a call!  Opto-Cal, will actually answer your calls and/or emails, most often, immediately.  

Opto-Cal also offers consulting for your optical calibration needs.  Whether your setting up an in-house laboratory or just need to know which light measurement equipment to use, Opto-Cal can help you find the best possible solution that meets your metrology needs. 


    About us

    An Optical Calibration Laboratory
    13891 Deanly Court
    Lakeside, CA 92040
    Contact us
    13891 Deanly Court
    Lakeside, CA 92040

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