YY/T 0968.1-2014Medical optical radiation protective eyewear - Evaluation method - Part 1: Degree of optical radiation hazard reduction (English PDF)
医用光辐射防护镜 评价方法 第1部分：光辐射危害降低程度
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Issued by
NMPA
Level / Type
Industry · Recommended
Issue date
June 17, 2014
Implementation date
July 1, 2015
Scope
YY/T 0968.1-2014 is the English-translated version of 医用光辐射防护镜 评价方法 第1部分：光辐射危害降低程度.
YY/T 0968.1-2014 is the Chinese standard "Medical optical radiation protective eyewear - Evaluation method - Part 1: Degree of optical radiation hazard reduction".
Its scope clause reads: YY/T 0968 provisions of this part of the optical radiation hazards of medical optical radiation goggles minimize evaluation methods. This section applies to regular wear protective glasses medical optical radiation.
This section does not apply to medical lasers and beam diameter smaller than the eye pupil class under a light source of optical radiation goggles. Its clauses include terms and definitions.
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Document preview — YY/T 0968.1-2014
National Standard of the People's Republic of China
- ICS
- 11.040.70
- Classification
- C40
Issued by: National Medical Products Administration
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 3.
1 Scope
YY/T 0968 provisions of this part of the optical radiation hazards of medical optical radiation goggles minimize evaluation methods.
This section applies to regular wear protective glasses medical optical radiation.
This section does not apply to medical lasers and beam diameter smaller than the eye pupil class under a light source of optical radiation goggles.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 20145-2006 lamps and lamp systems light biosafety (CIE009S/E.2002, IDT)
ISO 15004-2.2007 ophthalmic instruments basic requirements and test methods - Part 2. Light hazard protection (Ophthalmicinstru- ments-Fundamentalrequirementsandtestmethods-Part 2. Lighthazardprotection)
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 Treatment tool processingdevice
By the use of specific processing technology to achieve the desired spectral transmission of the spectral distribution of the optical instrument.
3.2 Original appliance primarydevice
Over the substrate processing apparatus, with the processor having the same shape. The appliance is a matte absorption and a refractive index in the evaluation of the spectrum
The ideal instrument constant.
3.3 Spectral transmittance
tau (lambda)
Natural light conditions at normal incidence, the spectral radiant flux transmitted through phietlambda () of the incident spectral radiant flux phieilambda () ratio. See Calculation
Formula (1).
tau (lambda) = phiet
lambda ()
phieilambda ()
× 100% =
deltaphielambdat
deltaphielambdai
× 100% (1)
Where.
deltaphielambda --- wavelength spacing (bandwidth) deltalambda corresponding radiant flux (subscript t represents radiant flux permeable, it represents the incident radiation through
Volume), deltaphielambda = phielambda () · deltalambda.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
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Related Standards
GB/T 20145-2006 — Photobiological safety of lamps and lamp systems
YY/T 0968.2-2014 — Medical optical radiation protective eyewear - Evaluation method - Part 2: Photopic vision and colour vision
YY/T 0297-2026 — General requirements for clinical investigation of medical devices
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