Mitigating the Risks of Exposure to Laser Light

Even if reflected or diffuse, exposure to laser light can permanently damage the eyes. Maximum protection is offered by the eyewear against the most popular laser wavelengths, and it does not darken with age. Goggle and spectacle style frames are available. The filters are recessed in the frames with both styles so they do not touch the surface securing them against scratches.

The key features are:

  • Lightweight and comfortable to wear
  • Spectacle, goggle and "Over the Glass" style frames
  • Meet ANSI Z136.1 and Z87.1 requirements

Two Types of Eyewear Available

Premium Protection Eyewear

This laminated glass eyewear secures against direct hits from specified lasers for 10 seconds or 100 pulses. They use a composite of dielectrics, glass and self healing plastics. They offer the highest protection level and luminous transmittance. The durable frames are composed of a combination of metals and plastics.

"Alignment" and "Full Protection" filters are offered in this type of eyewear. The key benefits are:

  • Highest protection
  • Most durable
  • Better visible light transmittance

Plastic Eyewear for Diffuse Laser Radiation

In order to protect against diffuse laser light, this plastic eyewear is a more affordable alternative to the Premium Protection models. They make use of a proprietary coating which minimizes fogging and scratching.

The key benefits are:

  • Protects against diffuse laser light
  • More economical

Premium Protection Eyewear

Two types of premium protection eyewear are offered, which are alignment and full protection.

Alignment Eyewear for Visible Lasers

Alignment eyewear is particularly designed for experiments where it is necessary to see the laser beam. Each model is intended for a specific wavelength. A little of the specified wavelength is transmitted by the eye wear enough for alignment but not enough to cause eye damage. The power transmitted is less than 1mW for a direct hit; the eyes are still fully protected. Alignment eyewear cannot be used with a pulsed laser.

Full Protection Eyewear

This eyewear uses a clear laminated glass filter for highest visible light transmittance consistent with maximum attenuation over the specified protection range.

Density and transmittance of 49119/49109 Nd:YAG Full Protection Filter. Note the high optical density at 1.06 pm. When we name a laser we refer only to the fundamental wavelength; obviously this filter gives no protection for the second harmonic at 532 nm.

Figure 1. Density and transmittance of 49119/49109 Nd:YAG Full Protection Filter. Note the high optical density at 1.06 pm. When we name a laser we refer only to the fundamental wavelength; obviously this filter gives no protection for the second harmonic at 532 nm.

Eyewear for Diffuse Laser Radiation

This is the most popular eyewear. It is low cost, light weight and excellent for diffuse laser radiation. Models are offered for most VIS-IR lasers, and a 337.1nm model for the company’s nitrogen laser. The wearer must be careful not to look along the beam path of any pulsed laser.

Frame Styles

The glass eyewear is offered in goggle style and spectacle frames. The spectacle frames offer adjustable temple and side shield protection. They provide 140° field of view.

The goggle style frame offers excellent protection from laser radiation without compromising comfort. They are made from flexible material. Adjustable head strap, temple grooves, foam rim, and ventilation openings make the goggles extremely comfortable to wear for long periods. They offer a 130° field of view.

The plastic eyewear is offered in spectacle and "Over the Glass" frame styles. The "Over the Glass" models are comfortable and lightweight; they fit directly over prescription eyeglasses with no compromise in protection.

Specifications and Ordering Information

Premium Protection Laminated Glass Eyewear

Specifications are provided in Table 1.

For Lasers Protection Range (nm) Optical Density

 

Irradiance

 

Frame Style
Spectacles Goggles
Model No. Price Model No. Price
Nitrogen Argon 190 - 500 nm 515
nm (Alignment)*
5+
4 - 5
2 x 106 W m-2
@ 515 nm
49102

 

49103

 

He Ne, Diodes, Nd: YAG
Ti: Sapphire GaAs
633 nm (Alignment)*
750 - 1050 nm
1050 - 1064 nm
10,600 nm
1 - 2
7+
8+
5+
106W m-2
@ 1064 nm
49104

 

49105

 

Nd: YAG,
Holmium,CO2,
Erbium, IR Diodes
1064 - 1400 nm
1400 - 1600 nm
2100 nm,
2800 - 3200nm
& 10,600nm
5+
4+
4+
106W m-2
@ 1064 nm
49119

 

49109

 

Excimer 190 - 370 nm
370 - 380 nm
9+
8+
105 W m-2
@ 385 nm
49100

 

49101

 

* Alignment filters are not for use with pulsed lasers when the laser wavelength is the same as the alignment wavelength. This eyewear will not protect eyes against direct hits or specular reflections from pulsed laser beams.

Plastic Eyewear for Diffuse Laser Radiation

Specifications are provided in Table 2

For Lasers Protection Range (nm) Optical Density

 

Frame Style
Spectacles Over the Glass
Model No. Price Model No. Price
Alexandrite,
Ti: Sapphire, and Diodes
190 - 380
750 - 765
766 - 860
10,600
7
5.5
6
5
49212

 

49213

 

Nd: YAG CO2 Diodes
Ti: Sapphire
190 - 380
800 - 839
840 - 864
865 - 1060
1064
10,600
7
3+
4+
5+
7
5
49202

 

49203

 

Diodes Ti: Sapphire
Nd: YAG, &CO2,
190 - 380
750 - 785
785 - 1064
10,600
7
3 - 4
5+
5
N.A.

 

49205

 

Nd: YAG & Harmonics 190 - 380
1064
10,600
7
5+
5
49206

 

49207

 

PDT, Dye, Ruby, Krypton 190 - 380
585 - 605
610 - 695
10,600
7
2 - 3
4 - 5
5
N.A.

 

49209

 

Infrared Diodes 190 - 380
830 - 1700
10,600
7
2+
5
N.A.

 

49211

 

Excimer, Argon 190 - 532
10,600
7
5
49200

 

49201

 

Double ND: Yag 190 - 532 7 N.A.

 

49214

 

About Oriel Instruments

Oriel Instruments, a Newport Corporation brand, was founded in 1969 and quickly gained a reputation as an innovative supplier of products for the making and measuring of light. Today, the Oriel brand represents leading instruments, such as light sources covering a broad range from UV to IR, pulsed or continuous, and low to high power.

Oriel also offers monochromators and spectrographs as well as flexible FT-IR spectrometers, which make it easy for users across many industries to build instruments for specific applications. Oriel is also a leader in the area of Photovoltaics with its offering of solar simulators that allow you to simulate hours of solar radiation in minutes. Oriel continues to bring innovative products and solutions to Newport customers around the world.

This information has been sourced, reviewed and adapted from materials provided by Oriel Instruments.

For more information on this source, please visit Oriel Instruments.

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