KF-287R Pinhole As Sunglasses

1) Both lenses: pinhole lens and sunglasses lens.

2) Both function: pinhole glasses function and sunglasses function.

3) Ordinary sunglasses. A serious limitation of ordinary sunglasses that is not obvious to the average user is that they degrade the vision in two ways. The obvious way is that they reduce the amount of light entering the eye, making everything darker and harder to see. The less obvious way is that any refractive error (nearsightedness, farsightedness, astigmatism) is made worse. This happens because the pupil becomes wider to compensate for the loss of light when the glasses are put on. And the wider the pupil, the more any refractive error contributes to poor vision. This is a simple thing for anyone to verify. Of course, one answer to this problem is to buy expensive prescription sunglasses. And new glasses must be purchased whenever there is a substantial change in the vision.        4)  Traditional pinholes as sunglasses. Conventional, hole-type pinhole glasses also reduce the brightness of the sun, just like sunglasses. But they do so by creating a SMALLER pupil which improves the vision. This is also a simple thing to verify. Just put on a pair of pinholes on a sunny day and see how the brightness of the sun is reduced.                      5)   Modern pinholes as sunglasses. But the most extraordinary use of pinholes in place of ordinary sunglasses is with the modern pinhole glasses that look like sunglasses. In addition to the light reduction that is provided by the small holes, the lenses have built-in UV protection. So you get a sunglass effect and better vision at the same time with no need for expensive prescription sunglasses. These are really the ultimate in eyewear. They are inexpensive, stylish, improve visual acuity, function as sunglasses, can be used indoors or outdoors, and can last a lifetime. However, they should not be used for driving or any moving activity where good peripheral vision is required.                            

6)  Ultraviolet protection. People who spend a lot of time in the sun should have glasses with ultraviolet protection in order to prevent damage to the lens and retina. Here is a comparison in order of increasing protection:                    

7)  Little protection: Prescription glasses made of CR-39      plastic, the most common lens material in the US. Such protection can be      added, but only at additional cost. Not everyone wants to spend additional      money on top of the high price they already pay for prescription glasses.                                                                                                    8) Substantial protection:

  1. Pinhole glasses with holes, since the total amount of light (including      the UV portion of the spectrum) passing through the lens and reaching the      retina is diminished.

  2. High-index prescription lenses which have protection built in. Since humans were never meant to totally avoid the UV spectrum in      sunlight, the protection afforded by these two items may well be      sufficient for most people.    9) Full protection: Sunglasses and the modern pinhole glasses      with smooth lenses: The lens material in both these products is normally      treated to afford full UV protection. 

Unit packaging: 15.4*6.5*4cm

export carton: 71*45*36cm

qty per export carton: 200pcs

export carton: 12.8kgs/10.8kgs.

20 YEARS

MANUFACTURING EXPERIENCE

SPECIALTY CREATE QUALITY

COOPERATION COINED VALUE

12 Months warranty for our products

ISO13485：2016, CE & RoHS standards for all our products

What we can do

- OEM/ODM service

- Product design, including structure and electronics (functions development)

- Prototyping and testing for concept ideas

- Mold design and production

- Injection molding of components

- Product assembly

- Surface treatment and logo printing

- Packing & shipments consolidation

Q1: Are you a factory?

A1: Yes, we are factories. Our main products are medical cleaning brushes, tube brushes, gun brushes, wire brushes,instrument cleaning brush and so on. 

Q2: What is the minimum order quantity?

A2: The normal standard is 500pcs, depending on the product. 

Question 3: What is the delivery time of the product?

A3: Within 5-20 days after the order is confirmed. 

Question 4: Can you customize the logo on the product?

A4: Yes, we can provide customization. 

Q5: Can you make special/customized products for your customers?

A5: Our company accepts OEM/ODM products, welcome customers to provide drawings or samples. 

Q6: What is the shipping cost of the product?

A6:1. FedEx / DHL / UPS / TNT samples, door to door;

2. Bulk cargo by air or sea, for FCL; airport/port receiving;

3. The customer specifies the freight forwarder or negotiable mode of transport!

4. Delivery time: 5-7 days for samples; 5-25 days for bulk shipments. 

Q7: What is the payment terms?

A7: Payment method: T / T, Western Union.