China wholesale Underwater Light Fish Supplier – 2000W-Underwater Fishing Lamp – Jinhong

Product Parameters

Depth of penetration of different spectra in seawater:

We can find that most light waves are absorbed by seawater, and only blue and purple light can penetrate deeper seawater. Because the human eye does not accept purple light clearly, blue light shows more. That’s why the sea is blue.

Let’s take another look at the above figure, which is the light energy diagram on the sea surface (light blue), 5m (blue) and 15m (dark blue) under the sea based on calculation and derivation,

We can notice that in the transition of water depth of 5-15m, the red light gradually disappears. The energy of light in the range of blue and purple is always the strongest.

Therefore, for the fish lamp, it is not that the higher the luminous flux of the lamp, the better the penetration, and the larger the effective water volume. Instead, it is most reasonable to use “luminous flux x penetration rate”. The underwater penetration of blue light is much greater than that of green, blue, white and yellow light.

It should be specially noted that blue light is only suitable for underwater lamps with comparative advantages. For underwater lamps, blue light can be used as a reasonable fill light or as a transition light source according to experience.

In the industry of hid, due to the limitation of the characteristics of blue spectrum, there are insurmountable disadvantages. After many experiments, our company has developed this blue hid, which is exported to Taiwan, Japan, South Korea and so on every year.

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