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GB/T 13511.4-2025 English PDF

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US$279.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 13511.4-2025: Assembled spectacles - Part 4: Multifocal and power-variation near-vision spectacles
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 13511.4-2025	279	Add to Cart	3 days	Assembled spectacles - Part 4: Multifocal and power-variation near-vision spectacles	Valid

Similar standards

GB/T 10810.3 GB/T 10810.2 GB/T 14214 GB/T 13511.2 GB/T 13511.1 GB/T 13511.3

Basic data

Standard ID: GB/T 13511.4-2025 (GB/T13511.4-2025)
Description (Translated English): Assembled spectacles - Part 4: Multifocal and power-variation near-vision spectacles
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y89
Classification of International Standard: 11.040.70
Word Count Estimation: 14,135
Date of Issue: 2025-02-28
Date of Implementation: 2026-03-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 13511.4-2025: Assembled spectacles - Part 4: Multifocal and power-variation near-vision spectacles

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
GB/T 13511.4-2025 English version. Assembled spectacles - Part 4.Multifocal and power-variation near-vision spectacles National Standard of the People's Republic of China ICS 11.040.70CCS Y 89 Fitting glasses Part 4.Multifocal and Progressive Presbyopic Lenses Assembled spectacles-Part 4.Multifocal and power⁃variation near⁃vision spectacles 2025-02-28 Release 2026-03-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Preface... Introduction... 1 Scope... 2 Normative referenced documents... 3 Terms and Definitions... 4 Requirements... 4.1 General requirements... Drafting. This document is Part 4 of GB/T 13511 “Fitting spectacles”. GB/T 13511 has been published in the following parts. -- Part 1.Monofocal and multifocal prescription spectacles; --Part 2.Progressive focus glasses; --Part 3.Single Vision Presbyopia Lenses; --Part 4.Multifocal and progressive presbyopic lenses. Please note that some of the contents in this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by China Light Industry Federation. This document is under the jurisdiction of the National Technical Committee on Optometry (SAC/TC 596). This document was drafted by. Yingtan Wancheng Optical Technology Co., Ltd., Hoya (Shanghai) Optical Co., Ltd., Guangdong Xingchuang Optical Technology Co., Ltd., Linhai Wanda Glasses Co., Ltd., Taizhou Junbo Glasses Co., Ltd., Hebei Chaoshili Technology Co., Ltd., Donghua University, National Eyeglass Glass Enamel Products Quality Inspection and Testing Center. The main drafters of this document are. Wang Likun, Zhao Mufu, Ma Ji, Wang Helan, Zhang Peng, He Jiang, Wang Junhao, Bian Hongfeng, Ye Jiayi, Tang Xiaojun, Xu Zhangqian, Wu Jiaxu, Sun Huanbao, Chen Shaoxiong, Zhang Xin, Zhou Beiying, Sun Jingjie, Wang Lianjun.

Introduction

Fitted glasses include custom-made glasses and presbyopia glasses, which are suitable for vision correction of people with various refractive errors or presbyopia. Personalized glasses can meet people's needs in different occasions. GB/T 13511 "Fitting glasses" aims to standardize the fitting of glasses. The production and use of glasses, improving the quality and safety of fitted glasses, and protecting consumers' vision health. GB/T 13511, as a recommended national standard supporting the mandatory national standards, consists of four parts. -- Part 1.Monofocal and multifocal prescription glasses. The purpose is to ensure the quality and safety of monofocal and multifocal prescription glasses and to improve Processing level. -- Part 2.Progressive focus custom glasses. The purpose is to ensure the quality and safety of progressive focus custom glasses and improve the processing level. --Part 3.Single-vision presbyopia spectacles. The purpose is to improve the product quality of single-vision presbyopia spectacles and protect the visual health of the elderly. and safe to use. -- Part 4.Multifocal and progressive presbyopia lenses. The purpose is to improve the product quality of multifocal and progressive presbyopia lenses and ensure Visual health and safety of use for the elderly. Fitting glasses Part 4.Multifocal and Progressive Presbyopic Lenses

1 Scope

This document specifies the requirements, marking, labeling and packaging of multifocal presbyopic lenses and progressive presbyopic lenses and describes the corresponding tests method. This document applies to mass-produced multifocal presbyopia lenses and progressive focus presbyopia lenses.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 10810.1 Spectacle lenses Part 1.Single focus and multifocal GB/T 10810.2 Spectacle lenses Part 2.Progressive lenses GB/T 13511.1 Prescription spectacles Part 1.Single-focal and multifocal prescription spectacles GB/T 13511.2 Pre-fitted spectacles Part 2.Progressive-focal prescription spectacles GB/T 13511.3 Prescription spectacles Part 3.Single vision presbyopia spectacles GB/T 14214 General requirements and test methods for spectacle frames GB/T 26397 Ophthalmic Optics Terminology GB 45184 Safety technical specification for components of ophthalmic products GB 45185 Safety technical specification for finished eyeglasses for ophthalmic products

3 Terms and definitions

Terms and definitions defined in GB/T 10810.1, GB/T 13511.3, GB/T 26397, GB 45184 and GB 45185 and the following Applicable to this document. 3.1 near-vision spectacles Mass-produced glasses are mainly used for near-sighted use. Note. They are usually divided into single-focus presbyopia lenses, multifocal presbyopia lenses and progressive focus presbyopia lenses. 3.2 Multifocal near-vision spectacles A pair of identical multifocal lenses assembled into a pair of presbyopia glasses, in which the near zone refractive power is a positive spherical refractive power. 3.3 Power-variation near-vision spectacles A pair of identical progressive focus lenses assembled into a pair of presbyopia glasses, in which the change in vertex power is the positive spherical diopter. 3.4 near reference point horizontal distance The distance between the near reference points of the two lenses of a multifocal presbyopic lens in a direction parallel to the line connecting the geometric centers of the two lens circles. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 13511.4-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 13511.4-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 13511.4-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 13511.4-2025_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.