Expert Details
Expert in Retroreflect Spectroradiometry
Expert ID: 718680
California, USA
ILLUMINATION MEASUREMENT; LIGHTING PROCESS; IRRADIANCE. Most of Jay's career has been devoted to the measurement of spectral power distributions and the weighting of the distribution components to result in photometric units. He notes that irradiance is a form of this measurement, weighted by the CIE Spectral luminous efficiency function V(a function of lambda). Lighting process also falls in this category.
OPTICAL INSTRUMENT. Jay has worked with optical instruments which collect and measure optical radiation. He has designed numerous instruments for this purpose.
RETROREFLECTION; REFLECTOMETRY. A prime emphasis of Jay's career in recent years has been the field of retroreflection of materials used for traffic control and safety in the transportation field. He has headed and chaired many technical committees dealing with this subject. He has extensive international contacts in this area, which he considers a subset of reflectometry.
RETROREFLECTIVE TRAFFIC CONTROL DEVICE. Jay is Chairman of CIE Technical Committee on Retroreflection and requirements of retroreflective traffic signs. He has designed instruments for this purpose and understands visibility aspects of traffic control devices such as conspicuity. He is a prior manufacturer of instruments for measurements of the traffic control devices and serves as an advisor to FHWA. As ASTM chairman of standards for retroreflection, Jay has extensive knowledge of national and international standards in this area.
SPECTRORADIOMETRY; SPECTROPHOTOMETRY. Over 30 years of Jay's career has been in the development of instrumentation and the analysis of data involving the measurement of the spectral power distribution of materials and light sources. Jay notes that while the general name for this field is spectroradiometry, he is also fully familiar with the area of spectrophotometry. Jay also has extensive experience in the areas of remote television sensing of photometry and colorimetry of the moon and planets. He has performed analysis on lunar samples and returned spacecraft parts.
PHOTOMETRY; ILLUMINATION; LIGHT CONTROL; LIGHTING DEVICE; LIGHTING SYSTEM; PROCESS. Jay's entire career has been devoted to this field, with widely varying applications.
Expert may consult nationally and internationally, and is also local to the following cities: San Diego, California - Long Beach, California - Santa Ana, California - Anaheim, California - Riverside, California - Huntington Beach, California - San Bernardino, California - Chula Vista, California - Garden Grove, California - Oceanside, California
Education
| Year | Degree | Subject | Institution |
|---|---|---|---|
| Year: 1955 | Degree: | Subject: Optical Physics | Institution: Technical University, Berlin |
| Year: 1950 | Degree: BA | Subject: Astronomy | Institution: University of California |
Work History
| Years | Employer | Title | Department | Responsibilities |
|---|---|---|---|---|
| Years: 1998 to Present | Employer: Undisclosed | Title: President | Department: | Responsibilities: |
| Years: 1995 to 1998 | Employer: Art - A Part Of Gamma Scientific, Inc. | Title: President | Department: | Responsibilities: |
| Years: 1982 to 1995 | Employer: Advanced Retro Technology | Title: President | Department: | Responsibilities: |
| Years: 1974 to 1982 | Employer: Gamma Scientific | Title: Vice President of Research & Engineering | Department: | Responsibilities: |
| Years: 1969 to 1974 | Employer: California Institute of Technology | Title: Senior Research Fellow | Department: | Responsibilities: |
| Years: 1961 to 1969 | Employer: Jet Propulsion Laboratory | Title: Technical Staff | Department: | Responsibilities: |
| Years: 1955 to 1960 | Employer: Scripps Institute of Oceanography | Title: Associate Engineer | Department: | Responsibilities: |
Language Skills
| Language | Proficiency |
|---|---|
| German |
Fields of Expertise
color measurement, colorimetry, Commission Internationale de l'eclairage color analysis, illumination measurement, lighting process, optical instrument, photometer, photometry, radiant flux density, reflectometry, retroreflection, spectrophotometer, spectrophotometry, spectroradiometry, standard illuminant, goniophotometer, optical physics, beam divergence, autocollimation, gemstone colorimetry, visible spectrophotometry, color blindness, plane-polarized light, paraxial ray, visible spectrum, collimator, angle of refraction, color metamerism, color, electromagnetic radiation, radiation energy, visible light, telescope, optical projection system, optical filter, color standard, color science