What is the field of view like on a purge mask

A purge mask is a type of scuba diving mask that has a special valve designed to allow divers to clear water from the mask without having to remove it. One important factor to consider when selecting a purge mask is the field of view. The field of view is the area visible through the mask lens and is crucial for divers to have a clear and unobstructed view of the underwater world. In this article, we will explore the field of view on a purge mask.

Definition of Field of View

The field of view is the area that can be seen through the mask lens. A large field of view is important for divers to be able to see their surroundings clearly and be aware of potential hazards. The field of view is determined by the size and shape of the lens, as well as the distance between the lens and the diver's eyes. A larger lens and a closer distance to the eyes typically result in a larger field of view.

Factors that Affect Field of View

Several factors can affect the field of view on a purge mask. These factors include the size and shape of the lens, the distance between the lens and the eyes, and the design of the mask frame. For example, a mask with a low volume design, which means the distance between the lens and the eyes is minimized, can provide a larger field of view than a mask with a high volume design. Similarly, a mask with a single lens can provide a larger field of view than a mask with two separate lenses.

Typical Field of View

The typical field of view on a purge mask is around 120 to 140 degrees, which is sufficient for most recreational divers. This field of view allows divers to have a clear and unobstructed view of their surroundings and be aware of potential hazards. However, it is important to note that the field of view can vary depending on the specific mask and manufacturer. Some purge masks may have a larger field of view, while others may have a smaller field of view.

Professional-grade Masks

Professional-grade purge masks are designed for divers who require the highest level of performance and durability from their equipment. These masks typically have a larger field of view than standard purge masks, ranging from 140 to 180 degrees or more. They also have a low volume design, a single lens, and a flexible frame that conforms to the diver's face for maximum comfort and seal. Professional-grade purge masks are suitable for experienced divers who engage in deep or technical diving and require the best possible visibility and performance from their equipment.

Factors to Consider

When selecting a purge mask, it is important to consider the field of view, as well as other factors such as the fit, comfort, and features of the mask. The field of view should be large enough to provide a clear and unobstructed view of the underwater world and be suitable for the diver's needs. Other factors to consider include the materials used in the mask, the durability of the mask, and the ease of clearing water from the mask. Proper maintenance and regular inspection are also crucial to ensure that the mask is in good condition and can provide the best possible visibility.

In conclusion, the field of view on a purge mask is an important factor to consider when selecting scuba diving equipment. The typical field of view is around 120 to 140 degrees, which is sufficient for most recreational divers. Professional-grade purge masks have a larger field of view ranging from 140 to 180 degrees or more and are suitable for experienced divers who require the best possible visibility and performance from their equipment. When selecting a purge mask, it is important to consider the field of view, as well as other factors such as the fit, comfort, and features of the mask.