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HMC EMI Cr39 Single Vision Lenses Blanks 1.499 Index Anti Radition Coating

Categories Cr39 Single Vision Lenses
Brand Name: Aogang Optics
Model Number: Cr39 Single Vision Lenses
Certification: CE/FDA/ISO9001
Place of Origin: China
MOQ: 100 pairs
Price: negotiation
Payment Terms: T/T, Western Union, L/C, D/A, D/P, MoneyGram,Paypal
Supply Ability: 40,000 pieces per day
Delivery Time: 10~30 days, depend on your quantity
Packaging Details: 1) Standard white envelope 2) color envelop with customer design
Index: 1.499
Material: CR 39
Diameter: 65/70/75mm
Abbe value: 56
Specific Gravity: 1.34
Transmission: > 98%
Coating: hard multi coated
Power range: Base: 50~1000
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HMC EMI Cr39 Single Vision Lenses Blanks 1.499 Index Anti Radition Coating

CR39 1.499 Single Vision HMC EMI Semi Finished Lens Blanks With Anti Radition Coating

I. Specifications:

IndexMonomerAbbe value
1.499CR 3956
Specific GravityTransmissionCoat
1.3498%Hard Multi Coated
65/70/75mm50~1000Semi Finished

II. Features:

  • Semi Finished Lens

The starting point for freeform production is a semi-finished lens, also known as a puck due to its resemblance to an ice hockey puck. These are produced in a casting process that is also used to manufacture stock lenses. The semi-finished lenses are produced in a casting process. Here, liquid monomers are first poured into moulds. Various substances are added to the monomers, e.g. initiators and UV absorbers. The initiator triggers a chemical reaction that leads to hardening or "curing" of the lens, while the UV absorber increases the UV absorption of the lenses and prevents yellowing.

  • CR39

1). Low Weight: Lenses of hard resin have a gravity 1.31/cm3, almost half of that of standard crown glass.The low weight of the lenses give comfort for the spectacle wearers.

2). Safety: Lenses of hard resin have excellent impact resistance lenses with a centrethinkness of 2mm or more comply with the cen lens-strength norm and the FDA balldrop test norm.

3). Optical Quality: Lenses of hard resin have a very high light transmission(among the highest for optical plastics). The Abbe number is high(57) CR-39 monomer gives a sharp defined image for plastic lens wearers.

4). Special Lens Treatment: Monomer allow for special treatment such as rimless frames, color tinting for style or sunglass. UV-protection and photochromic.

5). Lens Curve Stailing: The impact resistance of CR-39 monomer gives plastic lenses the strength to sustain stable curve design.

  • AR Coating:

In the dipping process a lacquer is applied to the lens to make it scratch-resistant. Specially adapted lacquers are used for the various plastic materials with different refractive indices. The hard protective coating is about two microns thick. After ultrasonic cleaning the anti-reflective coatings are applied in a vacuum deposition process. The individual lenses are arranged in special racks known as calottes. A modern coating has up to 9 individual layers – the overall package is around 400 nanometers thick.

The most important benefits of anti-reflective (AR) coating may be the unseen advantage–relief from fatigue and eyestrain caused by glare.

III. Technical Data:

IV. Prodcution Process:

V. Packing :

EnvelopOuter box
Choice 1Choice 2Finished lensSemi-finished lens
White envelop

color envelop with customer design
weight : 157g

size : 9*9*9cm

about 500 pairsper carton, 21kgsabout 100 pairs per carton, 15kgs

standard export paper carton 38cm*48cm*35cm

( 0.064 CBMS )

VI. Shipping:

SamplesBatch goods
By Fedex, DHL, UPS, TNT etc .By air, sea, express
Delivery time: within 3 daysDelivery time: about 10-30 days, depend on your quantity

VII. Our service:

1. Our Customer service will begin to track the product processing every day until you receive the goods and verify the product quality when you finish the payment.

2. Online via SKYPE,Whatsapp;Also through mail, voice phone, message could contact us at any time!

3. Follow up the case, record the entire process. Solution will be provide with 24 hours.
Meanwhile,the problem complaint will be reported to QC department.
QC will find defect from which department ,who is in charge to identify responsibility.

4. Collect and record all the voice from each customer respond , suggestion, requirement.

5. We own the best after-sale service,if any problems happen,our team will do our best to solve for customers.

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