Oversize New Promotion Party Sunglasses

What do the 1, 2, 3, and 4 categories on the sunglasses tag mean? First we need to understand a word: transmittance. Transmittance, also known as transmission coefficient, refers to the ratio of the luminous flux through the lens to the incident luminous flux. Simply speaking, it is the transmittance or transmittance of visible light. For example, if a sunglasses lens has a transmittance of 40%, that is, only 40% of visible light can pass through the lens into the eye.

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Product Introduction

First we need to understand a word: transmittance. Transmittance, also known as transmission coefficient, refers to the ratio of the luminous flux through the lens to the incident luminous flux. Simply speaking, it is the transmittance or transmittance of visible light. For example, if a sunglasses lens has a transmittance of 40%, that is, only 40% of visible light can pass through the lens into the eye.

According to the transmittance of visible light, the lens can be divided into 1-4 categories from shallow to deep:

One type: light-colored sunglasses; projection ratio 43%~80%

The lightest color, shade and reduce the minimum luminous flux, generally used as a fashion accessory mirror

The second category: light shade mirror; transmittance 18%~43%

Lighter in color, used on cloudy or cloudy days;

Three categories: sun visor; transmittance 8% to 18%.

Most sunglasses belong to this level, suitable for outdoor activities such as seaside and mountain climbing;

Four categories: special purpose sunglasses; transmittance 3%~8%

It is used in skiing, desert, electric welding and other environments.

Model#:

WP1045

Item Type:

Promotion Sunglasses, logo sunglasses square 

Frame Material:

PC

Lens Material:

PC

Age

Adult

ODM/OEM service:

Yes

MOQ:

300pcs

Certificate:

FDA, CE

 

Product Details

2019 New Promotion Party  Sunglasses size2019 New Promotion Party  Sunglasses colors

Payment and Shipping

china sunglasses shipment and payment

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