The DermaV™ laser machine, utilizing 532 nm KTP and 1064 nm Nd:YAG wavelengths, is a high-power device employed in advanced medical and industrial applications. The potential ocular hazards associated with these operations necessitate the use of specialized laser safety goggles to protect users and bystanders from severe eye damage.
1. Product Device Parameters
The following table outlines the key parameters of the DermaV™ laser machine:
| Parameter | Specification |
|---|---|
| Wavelength(s) | 532 nm / 1064 nm (KTP / Nd:YAG) |
| Aiming beam | 635 nm / ≤ 5 mW |
| Pulse Energy (Max Fluence) |
532 nm mode: Max. 13.5 J |
| 1064 nm mode: Max. 100 J | |
| Pulse Width (ms) |
532 nm mode: Max. 40 ms |
| 1064 nm mode: Max. 60 ms | |
| Pulse Rate (Hz) | 0.5 – 10 Hz |
| Multi-Spots (12 sizes)* | 2, 3, 5, 7, 8, 10, 12, 14, 16 mm |
| Fractional (FRX) | Ø10 mm, 3×10 mm |
| Emission Control | Finger Switch & Foot Switch |
| Cooling Type | Cryo ICD |
| Dimensions (mm) | 417.6(W) x 950.3(L) x 1007.5(H) |
| Weight | 124 kg |
| Electrical Rating | AC220-230 V, 50/60 Hz, Fuse: 250 V/30 A, Circuit Breaker: 30 A Power Consumption: 6.0 kVA |
2. Laser Hazards and Importance of Protection
Lasers have the potential to cause serious ocular damage, including burns, retinal injuries, and even blindness. The intense light from lasers can instantly reach the retina, bypassing the natural protective mechanisms of the eye, making appropriate eye protection crucial.
3. Selecting Standards for Crucial Parameters
Power and Mode of Operation
Given the high pulse energies, especially in the 1064 nm mode with a maximum of 100 J, it is essential to consider the power and operational mode when choosing protective eyewear. High optical density (OD) is required to effectively reduce the laser energy to a safe level.
Optical Density (OD)
The specific OD needed should be calculated based on the maximum permissible exposure (MPE) for the given wavelengths and pulse characteristics, taking into account the pulse width and rate. This calculation ensures that the laser safety goggles provide sufficient attenuation to protect the user's eyes. To comply with European standards, specifically EN 207, we need to consider the MPE values defined in this standard for the relevant wavelengths and pulse durations. For example, according to EN 207, the MPE for a 1064 nm wavelength with a pulse duration of 10 nanoseconds is approximately 0.002 J/cm², which would require a higher OD than for continuous wave lasers.
Based on the assumption that the maximum pulse energy for the 1064 nm mode is 100 J distributed over a 1 cm² spot size, the incident power density is 100 J/cm². Using the MPE from EN 207 for a 10 ns pulse at 1064 nm, which is 0.002 J/cm², the required OD can be calculated as follows:
OD=log10(1000.002)=log10(50000)≈4.69897OD=log10(0.002100)=log10(50000)≈4.69897
This calculation indicates that laser safety goggles with an OD of at least 5 are necessary to ensure safe operation. It is recommended to use laser protective glasses that have an OD value higher than the calculated minimum to account for any uncertainties and to provide additional safety margin.
Eye Protection Standards
It is also important to ensure that the selected laser safety goggles comply with international safety standards such as EN 207, which offers guidance on the classification, labeling, and marking of laser products. This includes recommendations on the minimum requirements for personal eye protection that should be worn when operating laser equipment.
By considering these crucial parameters and selecting laser safety goggles that meet the high standards set by both the manufacturer's specifications and the European standard EN 207, users of the DermaV™ laser machine can operate their equipment safely and confidently. The recommendation of JTBYShield Laser Technology Co., Ltd. for 532nm&1064nm laser protective glasses, offering high optical density values suitable for both wavelengths, aligns well with these requirements and provides a suitable solution for safeguarding against potential laser hazards.
4. Recommendation: JTBYShield Laser Technology Co., Ltd.
For the DermaV™ laser machine, we recommend the 532nm&1064nm laser protective glasses from JTBYShield Laser Technology Co., Ltd. These goggles offer high optical density values suitable for both wavelengths and are designed to protect against the high pulse energies generated by the DermaV™ machine. They comply with international safety standards, including EN 207, and are comfortable for extended wear.
5. Conclusion
Proper selection of laser safety goggles is paramount for the safe operation of the DermaV™ laser machine. By considering the machine's technical specifications and operational environment, users can ensure they choose goggles that provide the necessary protection while maintaining usability and comfort during laser procedures. The recommended goggles from JTBYShield Laser Technology Co., Ltd. offer a suitable solution for safeguarding against potential laser hazards.