PD ISO TS 20328-2016 PDF

Full title and description

PD ISO/TS 20328:2016 — Imaging materials — Lenticular lens sheet — Measurements and specifications of dimensions. This technical specification defines how to measure and report the dimensional properties of lenticular (lenticule) lens sheets used for lenticular prints (depth illusion, motion/change effects) and specifies nominal sizes, target dimensions, tolerances and procedures to test dimensional stability under environmental conditions.

Abstract

ISO/TS 20328:2016 specifies measurement methods and reporting rules for the key dimensional characteristics of lenticular lens sheets. It covers lenticule width and frequency, sheet and lenticule thickness, classification and reporting of precision, and methods to determine temperature and humidity dependence and stability. The document is intended to ensure consistent specification, quality control and interchangeability of lenticular sheets across suppliers and users.

General information

• Status: Published (technical specification; confirmed after periodic review)
• Publication date: April 2016 (first edition)
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 37.040.10 (Image technology / Photographic equipment and projectors)
• Edition / version: Edition 1 (2016)
• Number of pages: 12 (core ISO publication length)

Scope

Applies to lenticular lens sheets used in lenticular printing processes (both impact and non-impact printing methods). The specification defines measurement procedures, nominal sizes and target dimensional tolerances for lenticule geometry and sheet thickness, and methods to evaluate dimensional stability with respect to temperature and humidity changes. It is intended for suppliers, manufacturers and test laboratories that produce, specify or verify lenticular sheets for imaging applications.

Key topics and requirements

• Definitions and terms for lenticular lens sheet geometry and related measurement concepts.
• Measurement procedures for lenticule width and lens frequency (lines per inch, lpi) including required measurement equipment and reporting of precision.
• Procedures to measure sheet and lenticule thickness and classification of thickness values.
• Methods to determine and report temperature and humidity dependence of dimensions and classification of environmental stability.
• Specification of nominal sizes, target dimensions and tolerances and guidance on precision within lots and lot-to-lot variation.
• Requirements for reporting measurement results, including presentation of uncertainties and precision.
• Informative annex explaining lenticular print concepts and examples of application.

Typical use and users

Used by lenticular sheet manufacturers, converters and suppliers, print service providers producing lenticular prints, product designers and brand owners specifying lenticular effects, quality assurance and metrology laboratories, purchasing/specification teams, and researchers working on imaging materials and lenticular technologies.

Related standards

Standards from ISO/TC 42 and related ISO/TS documents addressing imaging materials, measurement procedures and image quality are complementary. Examples include other ISO photography and imaging technical specifications and standards used for measurement, viewing conditions and material testing within imaging and print supply chains.

Keywords

lenticular, lenticule, lens sheet, imaging materials, measurements, dimensions, lens frequency, lpi, tolerances, thickness, temperature dependence, humidity stability, metrology, print specification

FAQ

Q: What is this standard?

A: ISO/TS 20328:2016 is a technical specification that sets out measurement methods, nominal sizes and tolerances for the dimensional properties of lenticular lens sheets used in lenticular printing.

Q: What does it cover?

A: It covers measurement procedures for lenticule width and frequency, sheet/lenticule thickness, precision reporting, classification of dimensions, and methods to test dimensional stability with respect to temperature and humidity.

Q: Who typically uses it?

A: Lenticular sheet manufacturers and converters, print service providers, QA/metrology labs, product specifiers and designers who require consistent dimensional specifications and verification for lenticular products.

Q: Is it current or superseded?

A: The specification was published in 2016 (first edition). It has been subject to ISO periodic review and was confirmed as the current technical specification following review cycles. Users should check the latest national or ISO catalog entries for any formal revisions or confirmations when preparing procurement or compliance documents.

Q: Is it part of a series?

A: It is a stand‑alone ISO Technical Specification within the imaging/photography area administered by ISO/TC 42. It complements other ISO imaging and photography standards and technical specifications that address measurement, viewing conditions and material properties.

Q: What are the key keywords?

A: Lenticular, lenticule, lens sheet, imaging materials, measurement methods, dimensions, lens frequency, lpi, thickness, tolerance, environmental stability.