IEC 62906-1-2:2015

IEC 62906-1-2 ®
Edition 1.0 2015-07
INTERNATIONAL
STANDARD
colour
inside
Laser display devices –
Part 1-2: Vocabulary and letter symbols

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IEC 62906-1-2 ®
Edition 1.0 2015-07
INTERNATIONAL
STANDARD
colour
inside
Laser display devices –
Part 1-2: Vocabulary and letter symbols

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.260 ISBN 978-2-8322-2779-4

– 2 – IEC 62906-1-2:2015 © IEC 2015
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Terms, definitions, and abbreviations . 5
2.1 Classification of terms . 5
2.2 Fundamental terms . 5
2.3 Terms related to speckle . 5
2.4 Terms related to display category . 7
2.5 Terms related to optical devices . 7
2.6 Terms related to light sources . 8
3 Letter symbols (quantity symbols / unit symbols) . 8
Annex A (informative) Categorization of speckle and speckle contrast ratio . 9
A.1 Objective speckle . 9
A.2 Subjective speckle . 9
A.3 Speckle contrast ratio . 10
Bibliography . 12

Figure A.1 – Optical configuration to observe objective speckle . 9
Figure A.2 – Optical configuration to observe subjective speckle . 10
Figure A.3 – Classification map of speckle . 10

Table 1 – Letter symbols . 8

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LASER DISPLAY DEVICES –
Part 1-2: Vocabulary and letter symbols

FOREWORD
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International Standard 62601-1-2 has been prepared by IEC technical committee 110:
Electronic display devices.
The text of this standard is based on the following documents:
FDIS Report on voting
110/661/FDIS 110/672/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 62906 series, published under the general title Laser display
devices, can be found on the IEC website.

– 4 – IEC 62906-1-2:2015 © IEC 2015
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related to the specific publication. At this date, the publication will be
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LASER DISPLAY DEVICES –
Part 1-2: Vocabulary and letter symbols

1 Scope
This part of IEC 62906 gives the preferred term
...