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Jiangsu Aogang Optical Glasses Co., Ltd.

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SF CR39 Uncoated Flat Top Bifocal Lenses Blanks Far / Near Vision 1.499 Index

SF CR39 Uncoated Flat Top Bifocal Lenses Blanks Far / Near Vision 1.499 Index

    • SF CR39 Uncoated Flat Top Bifocal Lenses Blanks Far / Near Vision 1.499 Index
    • SF CR39 Uncoated Flat Top Bifocal Lenses Blanks Far / Near Vision 1.499 Index
  • SF CR39 Uncoated Flat Top Bifocal Lenses Blanks Far / Near Vision 1.499 Index

    Product Details:

    Place of Origin: China
    Brand Name: Aogang Optics
    Certification: CE/FDA/ISO9001
    Model Number: Flat Top Bifocal Lenses

    Payment & Shipping Terms:

    Minimum Order Quantity: 100 pairs
    Price: negotiation
    Packaging Details: 1) Standard white envelope 2) color envelop with customer design
    Delivery Time: 10~30 days, depend on your quantity
    Payment Terms: T/T, Western Union, L/C, D/A, D/P, MoneyGram,Paypal
    Supply Ability: 40,000 pieces per day
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    Detailed Product Description
    Index: 1.499 Material: CR39
    Diameter: 70/28mm Abbe Value: 56
    Specific Gravity: 1.33 Transmission: > 97%
    Coating: Non-coated Power Range: Base: 2/4/6/8 ADD: +1.00~+3.50

    SF CR39 1.499 Uncoated Flat Top Bifocal Lenses In Semi Finished Lens Blanks For Far And Near Vision
     
    I. Technical Data:

     

     1.499 S/F FLAT TOP BIFOCAL BLANKS

     MARTERIAL REFRACTIVE INDEX=1.499                                                                     TOOLING INDEX=1.530
    Diameter(mm) Nominal
    Curve
    Front
    Radius
    T.C Back
    Radius
    BACK
    T.C
    CT/ET Frong sag
    Ring 50mm
    RX Range
    Recommended
    ɸ70 200B 234.27 2.26 94.93 5.58 10.0/14.0 1.34 -5.25Dto-8.00D
    ɸ70 400B 127.62 4.15 94.93 5.58 10.0/12.0 2.47 +2.00Dto-5.00
    ɸ70 600B 87.18 6.08 161.04 3.29 9.0/6.0 3.66 0.00Dto+4.00D
    ɸ70 800B 66.49 7.97 161.04 3.29 13.0/6.0 4.88 -4.25Dto+6.00D

     

    II. Semi finished lens:

     

    Semi-finished lens is the raw blank used to produce the most individualized RX lens according to thepatient's prescription. Different prescription powers request for different semi-finished lens types or base curves.

     

    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.

    SF CR39 Uncoated Flat Top Bifocal Lenses Blanks Far / Near Vision 1.499 Index

     

    III. The classic bifocal product for presbyopes:

     

    Flat top lens are two prescriptions combined into a single lens. Flat top lens are needed because the distance glasses do not suffice to focus sufficiently for near. As age increases, (in India 38-40 years is the presbyopic age) reading glasses are required to read at a comfortable distance. Rather than taking out the distance glasses and putting on near glasses each time, a person who wishes to work at the near point could use the lower segment comfortably.

     

    SF CR39 Uncoated Flat Top Bifocal Lenses Blanks Far / Near Vision 1.499 Index

    The flat top is also called the style multifocal lens. This design has a segment width that ranges from 25mm to 45mm. The Flat Top is regarded as one of the easiest multifocal lenses to adapt to, hence it is the most commonly used bifocal (FT 28mm is referred to as the standard size). This lens style is also one of the most readily available in almost any medium and including comfort lenses. The Flat Top utilizes the complete width of the segment giving the user a definitive reading and distance transition

     

     

    IV. Factory Pictures:

     

    SF CR39 Uncoated Flat Top Bifocal Lenses Blanks Far / Near Vision 1.499 Index

    V. Packing&Shipping:
     

    Envelope

    Carton

    Lenses Pair

    Size

    Weight

    Lead Time

    Choice 1

    White Envelope Stand Export Carton

    Finished optical lens: 1 pcs/envelope, 500 pairs/carton

    38*48*35 cm 21 KG Depend on the order quantity

    Choice 2

    Your design with your logo

    Semi-finished optical lens: 1 pcs/envelope, 100 pairs/carton

    15 KG

    Carrier

    We can choose for you or you offer us your cooperative company

     All the numbers provided above are estimated number, the actual number need to be measured according to the order you make.

    Payment Term

    30% T/T in advance, the balance before shipment

     

     

    VI. 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.

     

    Contact Details
    Jiangsu Aogang Optical Glasses Co., Ltd.

    Contact Person: Yang Lee

    Tel: +8613952827279

    Send your inquiry directly to us (0 / 3000)

    Jiangsu Aogang Optical Glasses Co., Ltd.
    East of Nongangxiao, Situ Town, Danyang City, Jiangsu Province, China
    Tel:86-511-86550315-9:00~17:00
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