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GB/T 39893-2021: Handheld electro-optical low-vision device
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
GB/T 39893-2021	English	189	Add to Cart	3 days [Need to translate]	Handheld electro-optical low-vision device

GB/T 39893-2021: Handheld electro-optical low-vision device

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Handheld electro-optical low-vision device ICS 11.040.70 C32 National Standards of People's Republic of China Handheld electronic vision aid Released on 2021-03-09 2021-03-09 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the Ministry of Civil Affairs of the People's Republic of China. This standard is under the jurisdiction of the National Standardization Technical Committee for Rehabilitation and Special Equipment for the Disabled (SAC/TC148). Drafting organizations of this standard. National Rehabilitation Assistive Device Research Center, National Rehabilitation Assistive Device Quality Supervision and Inspection Center, Hangzhou Ruijielong Technology Co., Ltd. Company, Shenzhen Ruizhi Video Technology Co., Ltd., Beijing Aotengdakang Instrument Co., Ltd. The main drafters of this standard. Yun Xiao, Guo Huan, Gu Huiru, Luan Huiqin, Yan Heping, Huang Huanqun, Huang Biqiang, Tong Xiaoyu, Wu Junfa, Chen Ming, Fang Jianhui, Li Xiang. Handheld electronic vision aid

1 Scope

This standard specifies the terms and definitions, technical requirements, test methods, signs and instructions for hand-held electronic vision aids. This standard applies to handheld electronic vision aids used by people with low vision. This standard does not apply to optical visual aids, desktop, portable and head-mounted electronic visual aids.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document. GB/T 9254 Information Technology Equipment Radio Disturbance Limits and Measurement Methods GB 9706.1 Medical Electrical Equipment Part 1.General Requirements for Safety GB/T 16886.1 Biological Evaluation of Medical Devices Part 1.Evaluation and Testing in the Process of Risk Management GB/T 17626.2 Electromagnetic compatibility test and measurement technology Electrostatic discharge immunity test GB/T 17626.3 Electromagnetic compatibility test and measurement technology Radio frequency electromagnetic field radiation immunity test GB/T 26339 Ophthalmic optics and equipment electronic visual aids

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Electro-opticallow-visiondevice A device used by people with low vision through electronic imaging methods. [GB/T 26339-2010, definition 3.1] 3.2 An electronic vision aid that can be held and used by people with low vision. Note. The display screen is integrated with the camera or image acquisition system in the same device, without the stage component. 3.3 Display mode displaymode The color combination mode that the handheld electronic vision aid can provide. 3.4 Working distance freeworkingdistance Under a certain magnification, the allowable distance between the camera or image acquisition system of the handheld electronic vision aid and the plane where the object is located. 3.5 Maximumvisiblearea Under the specified conditions of use, when the vision aid is at the minimum magnification and maximum working distance position, the maximum distance that can be seen through the vision aid Large target plane range. ...