ISO 10503-1991 PDF

Full title and description

ISO 10503:1991 — Photography — Expendable reflectored photoflash lamp arrays — Definitions and requirements for luminous flux/time characteristics. This short International Standard defines terms, time intervals and the required luminous flux/time characteristics and related tolerances for expendable reflectored photoflash lamp arrays.

Abstract

Gives terms and definitions for expendable reflectored photoflash lamp arrays. Defines important time intervals of characteristics, the time integral of luminous intensity and tolerances for the ISO spectral distribution index for various types of photoflash lamp arrays. The document is concise and focused on characteristic definitions rather than extended test procedures.

General information

• Status: Withdrawn / Withdrawn from the ISO catalogue.
• Publication date: December 1991 (Edition 1, 1991).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 37.040.10 (Photographic equipment / projectors and related photographic illumination equipment).
• Edition / version: Edition 1 (1991).
• Number of pages: 2 (short document).

Key bibliographic and life‑cycle details are recorded on the ISO catalogue entry and national standards catalogs.

Scope

This standard establishes vocabulary and the numerical definitions of time‑related luminous characteristics for expendable reflectored photoflash lamp arrays. It covers which time intervals are relevant for characterization, how to express the time integral of luminous intensity (flux/time), and acceptable tolerances for spectral distribution indices used to classify and compare lamp arrays. It is intended to standardize descriptions of photoflash array performance rather than prescribe manufacturing processes.

Key topics and requirements

• Definitions of terms relevant to expendable reflectored photoflash lamp arrays (vocabulary).
• Specification of important time intervals for luminous output characterization.
• Definition and expression of the time integral of luminous intensity (flux over time).
• Tolerances and limits for the ISO spectral distribution index for different array types.
• Classification guidance for various types of expendable reflectored photoflash arrays (descriptive, not procedural testing methods).

Typical use and users

Used by photoflash lamp and photoflash array manufacturers, product developers, test laboratories, photographic equipment standardization committees, and technical authors who need standardized definitions of flash-array luminous/time characteristics for specifications, datasheets and comparative reporting. Because the standard is withdrawn, it is primarily of interest for historical reference and for interpretation of legacy specifications.

Related standards

Related work sits under ISO/TC 42 (Photography) and other ISO photography standards addressing photometric and spectral properties, test methods and vocabulary for photographic illumination. Users should consult current ISO/TC 42 catalogue entries for active or replacement standards covering photoflash and illumination measurement methods.

Keywords

photography, photoflash, lamp arrays, expendable reflectored, luminous flux, luminous intensity, time integral, spectral distribution index, ISO 10503, ISO/TC 42

FAQ

Q: What is this standard?

A: ISO 10503:1991 is an International Standard that defines terms and the luminous flux/time characteristics used to describe expendable reflectored photoflash lamp arrays.

Q: What does it cover?

A: It covers vocabulary, the important time intervals for characterizing flash output, the time integral of luminous intensity (flux over time), and tolerances for the ISO spectral distribution index for different array types. It is focused on definitions and specification of characteristics rather than extensive test procedures.

Q: Who typically uses it?

A: Photoflash lamp and array manufacturers, product specification authors, test labs, and standards committees; also engineers and historians consulting legacy documentation.

Q: Is it current or superseded?

A: ISO 10503:1991 is listed as withdrawn in the ISO catalogue. Users needing current requirements should check ISO/TC 42 for any successor documents or newer photography illumination standards.

Q: Is it part of a series?

A: It is a standalone ISO technical standard (base number 10503) produced under ISO/TC 42; any related or subsequent photography standards will be listed under the committee’s catalogue. It is not indicated as one part of a multipart series in the original publication.

Q: What are the key keywords?

A: photoflash, flash array, expendable reflectored lamp, luminous flux/time, spectral distribution, luminous intensity, ISO 10503.