EN ISO 14880-3:2006

SLOVENSKI STANDARD
01-julij-2006
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Optics and phonotics - Microlens arrays - Part 3: Test methods for optical properties
other than wavefront aberrations (ISO 14880-3:2006)
Optik und Photonik - Mikrolinsenarrays - Teil 3: Prüfverfahren für optische Eigenschaften
außer Wellenfrontaberrationen (ISO 14880-3:2006)
Optique et phonotique - Réseaux de microlentilles - Partie 3: Méthodes d'essai pour les
propriétés optiques autres que les aberrations du front d'onde (ISO 14880-3:2006)
Ta slovenski standard je istoveten z: EN ISO 14880-3:2006
ICS:
31.260 Optoelektronika, laserska Optoelectronics. Laser
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 14880-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2006
ICS 31.260
English Version
Optics and phonotics - Microlens arrays - Part 3: Test methods
for optical properties other than wavefront aberrations (ISO
14880-3:2006)
Optique et phonotique - Réseaux de microlentilles - Partie Optik und Photonik - Mikrolinsenarrays - Teil 3:
3: Méthodes d'essai pour les propriétés optiques autres Prüfverfahren für optische Eigenschaften außer
que les aberrations du front d'onde (ISO 14880-3:2006) Wellenfrontaberrationen (ISO 14880-3:2006)
This European Standard was approved by CEN on 3 May 2006.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
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© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14880-3:2006: E
worldwide for CEN national Members.

Foreword
This document (EN ISO 14880-3:2006) has been prepared by Technical Committee ISO/TC 172
"Optics and optical instruments" in collaboration with Technical Committee CEN/TC 123 "Lasers
and photonics ", the secretariat of which is held by DIN.

This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by December 2006, and conflicting national
standards shall be withdrawn at the latest by December 2006.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Endorsement notice
The text of ISO 14880-3:2006 has been approved by CEN as EN ISO 14880-3:2006 without any
modifications.
INTERNATIONAL ISO
STANDARD 14880-3
First edition
2006-06-01
Optics and photonics — Microlens
arrays —
Part 3:
Test methods for optical properties other
than wavefront aberrations
Optique et photonique — Réseaux de microlentilles —
Partie 3: Méthode d'essai pour les propriétés optiques autres que les
aberrations du front d'onde
Reference number
ISO 14880-3:2006(E)
©
ISO 2006
ISO 14880-3:2006(E)
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ii © ISO 2006 – All rights reserved

ISO 14880-3:2006(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 1
4 Substrate test . 1
5 Microscope test method . 1
5.1 Principle. 1
5.2 Measurement arrangement and test equipment. 2
5.3 Preparation . 4
6 Procedure . 4
6.1 General. 4
6.2 Measurement of effective back or front focal length . 4
6.3 Measurement of chromatic aberration . 4
6.4 Measurement of the uniformity of the focal spot positions . 5
7 Results and uncertainties . 5
8 Coupling efficiency, imaging quality . 6
9 Test report . 6
Annex A (informative) Measurements with wavefront measuring systems. 8
Annex B (normative) Confocal measurement of effective back or front focal length of lens array. 10
Annex C (informative) Coupling efficiency, imaging quality . 12
Annex D (normative) Measurement of the uniformity of the focal spot positions of a microlens
array . 13
Bibliography . 14

ISO 14880-3:2006(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 14880-3 was prepared by Technical Committee ISO/TC 172, Optics and photonics, Subcommittee SC 9,
Electro-optical systems.
ISO 14880 consists of the following parts, under the general title Optics and photonics — Microlens arrays:
⎯ Part 1: Vocabulary
⎯ Part 2: Test methods for wavefront aberrations
⎯ Part 3: Test methods for optical properties other than wavefront aberrations
⎯ Part 4: Test methods for geometrical properties
iv © ISO 2006 – All rights reserved

ISO 14880-3:2006(E)
Introduction
This part of 14880 specifies methods of testing optical properties, other than wavefront aberrations, of
microlens arrays. Examples of applications for microlens arrays include three-dimensional displays, coupling
optics associated with arrayed light sources and photo-detectors, enhanced optics for liquid crystal displays,
and optical parallel processor elements.
The testing of microlenses is in principle similar to testing any other lens. The same parameters need to be
measured and the same techniques used. However, in many cases the measurement of very small lenses
presents practical problems which make it difficult to use the standard equipment that is available for testing
normal size lenses.
The market in microlens arrays has generated a need for agreement on basic terminology and test methods.
Standard terminology and clear definitions are needed not only to promote applications but also to encourage
scientists and engineers to exchange ideas and new concepts based on common understanding.
This part of 14880 contributes to the purpose of the series of ISO 14880 standards which is to improve the
compatibility and interchangeability of lens arrays from different suppliers and to enhance development of the
technology using microlens arrays.
The measurement of focal length is described in the body of this part of ISO 14880 and the use of an
alternative technique, interferometry, is described in Annex A.
Measurement of the focal length of an array of microlenses, using a confocal technique, is described in
Annex B.
Coupling efficiency and imaging quality are discussed in Annex C.
Measurement of the focal spot positions of an array of microlenses in parallel, using the Shack-Hartmann
technique, is described in Annex D.
INTERNATIONAL STANDARD ISO 14880-3:2006(E)

Optics and photonics — Microlens arrays —
Part 3:
Test methods for optical properties other than wavefront
aberrations
1 Scope
This part of ISO 14880 specifies methods for testing optical properties, other than wavefront aberrations, of
microlenses in microlens arrays. It is applicable to microlens arrays with very small lenses formed on one or
more surfaces of a common substrate and to graded index microlenses.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 14880-1, Optics and photonics — Microlens arrays — Part 1: Vocabulary
ISO 10110-5, Optics and optical instruments — Preparation of drawings for optical elements and systems —
Part 5: Surface form tolerances
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 14880-1 apply.
4 Substrate test
The optical quality of the substrate contributes to the quality of the focal positions defined by the microlenses
and shall be quantified in accordance with ISO 10110-5.
5 Microscope test method
5.1 Principle
The basic principle is to locate, by optical means, the surface of the microlens under test. The effective back
(front) focal length is determined by measuring the axial displacement necessary
...