
Zhi IR 1.7Infrared safety glasses for suitable therapeutic IR applications
Go to self-checkThe Zhi IR 1.7 is a lightweight pair of safety glasses with a green-tinted polycarbonate lens that protects your eyes from infrared radiation. It is also suitable for infrared treatments for therapeutic purposes.
The marking «4C-1.7» on the lens means: «4» stands for an infrared filter to EN 171, «1.7» for the shade number – a light level that allows good vision.
Red-light lamps and infrared therapy →Will - Leads to a planned action. This shapely and lightweight safety spectacle, with additional soft nose pads and soft temples, will safely accompany you!
- Standards and marking
- PSA-Verordnung (EU) 2016/425 EN 166:2001EN 166EN 171
- Manufacturer
- Unico Graber
- Availability
- Regularly available
Red-light lamps and infrared therapy
Confirmed product properties
- Infrared filter to EN 171, lens marking 4C-1.7
- Suitable for infrared treatment methods for therapeutic purposes
- Tested to EN 166 (frame: UG 166 F, lens: UG 1F) and PPE Regulation (EU) 2016/425
- Polycarbonate lens, green tint, scratch-resistant, with temples
General information on infrared light
- Red-light lamps, infrared emitters and therapy devices emit in different wavelength ranges and at different power levels depending on the model.
- Whether safety glasses are suitable therefore depends on the device used and its radiation spectrum – not just on the label «red light» or «infrared».
- The Zhi IR 1.7 is not automatically suitable for every red-light lamp, infrared cabin or sauna, and it is not a safety glass for IPL or laser devices. Always follow the device manufacturer's instructions.
Frequently asked questions
Will - Leads to a planned action. This shapely and lightweight safety spectacle, with additional soft nose pads and soft temples, will safely accompany you!
Zhi IR self-check · Item 0427 5000 02
Does the Zhi suit my application?
Two steps: choose your device type, then enter the wavelength.
Check device requirements
- Which wavelengths or spectrum does the device manual specify?
- Which eye protection or protection level does the manufacturer require?
- Which distances and operating times must be observed?
Compare your device’s requirements with the documented Zhi specifications. If information is missing or the comparison is unclear, ask the device manufacturer to confirm the requirements.
Frequently asked questions
Product documents
IR protection level: 4C–1.7 according to EN 171.
The ECS test report dated 28 January 2022 gives mean spectral transmissions of ≤ 4.1 % across 780–1400 nm and ≤ 42.2 % across 780–2000 nm. These are averages, not individual values for every wavelength or a current certification confirmation.
Extend service life instead of replacing
Correct cleaning, daily visual inspection and replaceable wear parts keep safety eyewear in service far longer. The complete guide including replacement criteria and a care plan for companies.
Matching guides
Deepen your knowledge of standards, selection and care.
EN 166 explained: markings, classes and what they mean day-to-day
EN 166 in plain English: what the numbers and letters on temples and lenses really mean — from optical class to impact resistance.
Spectacles or goggles? How to pick the right form factor
Safety spectacles vs. goggles compared: when each form factor protects better, when it gets in the way — with clear recommendations by use case.
Care, maintenance and service life of safety eyewear — the complete guide
Cleaning, visual inspection, spare parts and replacement criteria: how to extend the service life of safety and prescription eyewear — including a care plan for companies.
