Do Laser Safety Glasses Affect Color Recognition?

Wearing laser safety glasses can have an effect on the ability to recognize colors. Laser protection glasses are designed to block specific wavelengths of light, which can make it difficult to distinguish colors that fall within those wavelengths. For example, if the glasses are designed to block green laser light, it may be more difficult to differentiate between shades of green while wearing them.

Laser (system) use is more and more common, wide and deep, and laser applications are more and more complex, such as laser precision machining and laser medicine (especially for eyes, blood vessels, and deep skin), laser requirements can vary greatly - wavelength, mode of operation, energy (power), etc., ripe trained laser users and developers are now paying more and more attention to laser safety products such as laser safety glasses and laser safety windows long coverage, protection level, and style requirements, but only paying attention to these is not enough, for example, few people pay attention to the application of laser in the process the effect of wearing laser safety glasses (through the same laser safety window) on color recognition. Let's take laser safety as an example to illustrate

As can be seen from the color recognition bar chart on the left of the above figure, the recognition of blue, cyan and green is the highest in this series, which is close to or more than 70%, that is to say, through the lens of the laser safety glasses to look at the outside of the object, the color is basically fidelity, and on the yellow and orange is very weak, in the lens red is even finished all gone! The visible light transmittance (VLT) clearly identified in the data is about 40% - but this is a weighted index, which is not clear to most people.

How well does Chu represent color recognition, as there is no direct simplicity between the Air Quality Index AQI and PM2.5 (fine particulate matter with a diameter of 2.5 microns) correspondence. In order to have a more direct and intuitive impression of color recognition through the lens of laser safety glasses (same as the safety window), we use the combination of 6 circles at the bottom of the picture on the right background color, based on different series of laser safety glasses took a group of photos for reference.

Additionally, the glasses may cause a slight distortion in color perception due to the tint of the lenses. However, these effects are typically minor and temporary. Once the glasses are removed, color perception generally returns to normal. It is important to wear laser protection glasses when working with lasers or in environments where lasers are present to protect the eyes from potential damage. The benefits of wearing the glasses generally outweigh any temporary impact on color perception.

As can be seen from the above table, some series of colors have a very ideal recognition effect, but in some colors, serious discoloration may lead to work mistakes or major accidents - for example, in laser medical treatment, it is necessary to clarify the subcortical The color of blood vessels, at this time, it is absolutely not allowed to change color due to mistakes in treatment parts! Therefore, the choice of laser glasses should be cautious, not only considering the laser band, laser power, etc., but also the influence of the color of the laser protective glasses lens on color recognition, especially when the color accuracy is very important, such as in When color recognition warning signs are present in the medical industry or in the workplace.

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