ISO 9342-1:2023
International Standard
Current Edition
·
Approved on
07 July 2023
·
Optics and optical instruments — Test lenses for calibration of focimeters — Part 1: Reference lenses for focimeters used for measuring spectacle lenses
ISO 9342-1:2023 Files
null Pages
Current Edition
ISO 9342-1:2023 Scope
This document specifies requirements for reference lenses for the calibration and verification of focimeters that are used for the measurement of spectacle form lenses, e.g. those complying with ISO 8598-1. It also gives a method for the determination of the back vertex power of the reference lenses.
NOTE It is accepted that other reference lenses can also be used with powers within the given range, manufactured to the same standard of accuracy and form, but different back vertex powers. However, only lenses with integer nominal powers, as described in 4.1, can be used for the calibration of digitally-rounding focimeters.
Best Sellers
GSO 150-2:2013
Gulf Standard
Expiration dates for food products - Part 2 :
Voluntary expiration dates
![GSO Standard](https://static.gso.org.sa/gso-uicore/assets/images/logo_gso_sml.png)
BH GSO 150-2:2015
GSO 150-2:2013
Bahraini Standard
Expiration dates for food products - Part 2 :
Voluntary expiration dates
![BH Standard](https://static.gso.org.sa/gso-uicore/assets/images/logo_bh_sml.png)
![GSO Standard](https://static.gso.org.sa/gso-uicore/assets/images/logo_gso_sml.png)
BH GSO 2055-1:2016
GSO 2055-1:2015
Bahraini Technical Regulation
HALAL FOOD - Part 1 : General Requirements
![BH Standard](https://static.gso.org.sa/gso-uicore/assets/images/logo_bh_sml.png)
![GSO Standard](https://static.gso.org.sa/gso-uicore/assets/images/logo_gso_sml.png)
GSO 2055-1:2015
Gulf Technical Regulation
HALAL FOOD - Part 1 : General Requirements
![GSO Standard](https://static.gso.org.sa/gso-uicore/assets/images/logo_gso_sml.png)
Recently Published
ISO/PAS 8329:2024
International Standard
Extended master connection file (χMCF) — Description of mechanical connections and joints in structural systems
![ISO Standard](https://static.gso.org.sa/gso-uicore/assets/images/logo_iso_sml.png)
IWA 45:2024
International Standard
Sustainable critical mineral supply chains
ISO/TS 5462:2024
International Standard
Rubber latex coated fabric gloves — Specification
![ISO Standard](https://static.gso.org.sa/gso-uicore/assets/images/logo_iso_sml.png)
ISO 19085-9:2024
International Standard
Woodworking machines — Safety — Part 9: Circular saw benches (with and without sliding table)
![ISO Standard](https://static.gso.org.sa/gso-uicore/assets/images/logo_iso_sml.png)