ISO 8478:2017 PDF
Optics and photonics — Camera lenses — Measurement of ISO spectral transmittance
Optics and photonics — Camera lenses — Measurement of ISO spectral transmittance
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 8
- Дата публикации:
- 31 октября 2017 г.
- Издание:
- ISO IS 8478 edition 2 version 1
- ICS:
- 37.040.10
ISO 8478:2017 specifies a method for measuring the spectral transmittance of camera lenses. It describes particular conditions for measuring the axial spectral transmittance, over a wavelength range from 350 nm to 700 nm, of camera lenses which are intended to be used mainly for taking pictures of very distant objects. If the spectral transmittance values are used exclusively for the calculation of the ISO colour contribution index (see ISO 6728) throughout ISO 8478:2017, the wavelength range reads 370 nm to 680 nm. ISO 8478:2017 is also applicable to mirror lenses (see Annex A).
Abstract
Overview
ISO 8478:2017 - Optics and photonics - Camera lenses - Measurement of ISO spectral transmittance - specifies a standardized method to measure the spectral transmittance of camera lenses. The standard defines conditions and apparatus for measuring axial transmittance for lenses intended mainly for imaging distant objects over the wavelength range 350 nm to 700 nm (or 370 nm to 680 nm when values are used exclusively for the ISO colour contribution index). It is also applicable to mirror lenses (see Annex A).
Key topics and requirements
- Measurement principle: Determine spectral transmittance τλ by measuring incident radiant flux Φi,λ and transmitted radiant flux Φτ,λ and calculating τλ = Φτ,λ / Φi,λ.
- Wavelength range & resolution: 350–700 nm nominal; 10 nm wavelength interval and bandwidth required (20 nm allowed when spectral variation
Технические детали
- Технический комитет
- ISO/TC 172/SC 1 - Fundamental standards
- SKU
- ISO 8478:2017
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