Ultimate Guide Of Led Optical Lenses

Apr. 27, 2023

Led optical lenses are made of liquid optical silicone, which has the features of high and low temperature resistance, anti-yellowing, UV resistance, soft texture, impact resistance, high light transmittance and low refractive index. With the continuous maturity of liquid injection molding technology, low-profile led optical lenses are more and more widely used in people's lives, and people have more and more questions about never chips led optical lenses.


1. What is led optical lens?

Never cracks led optical lens is a high-transparency product that uses silica gel instead of traditional glass or PMMA to achieve light reflection and refraction.

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2. What are the characteristics of led optical lenses?

1) The high transmittance of 94% is better than the traditional 92%.

2) High temperature resistance: -40—200 degrees

3) Good anti-yellowing property

4) UV resistance

5) Soft texture and impact resistance.

6) Low refractive index

3. How to test the quality of led optical lenses?

1) Surface roughness (high gloss RA0.02-RA0.05) (test with non-contact equipment)

2) Whether there are bubbles in the molded product (check with CCD)

3) Function: light measurement with light distribution equipment (including light type, brightness value,)

4) Others: functions specified by customers (such as UV resistance test, etc.)

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4. What are the assembly methods of led optical lenses?

Assembly structure:

1) Structural positioning

2) Thermosetting


Insert injection molding:

1) Form the injection molded parts first, and then put the injection molded parts into the LSR mold.

2) Do the overmolding process and form the silicone lens part.


5. Which industries or products are led optical lenses not suitable for?

Impact resistant led optical lenses are not suitable for imaging industries or products due to their soft surface.


6. What is the mold processing of led optical lenses?

Step 1: Mold Design

Step 2: Mold Material Order

Step 3: Drilling

Step 4: Grinder

Step 5: CNC Rough Machining

Step 6: Heat Treatment

Step 7: CNC Finishing

Step 8: Wire Cutting

Step 9: EDM

Step 10: Polishing

Step 11: Mold Matching

Step 12: Assembly

Step 13: To Prototype



7. Why is the mold cost of led optical lenses expensive?

1) The fluidity of silicone is better than that of injection molding, and the processing accuracy of the mold is 2 levels higher than that of the precision injection mold.

2) The led optical lenses requires high transparency and higher requirements for surface polishing.


8. Can led optical lenses be processed by vertical injection machine?

At present, led optical lenses for LED lighting are acceptable, and led optical lenses for automotive lighting are still under verification.


9. What is the difference between horizontal injection machine and vertical injection machine for led optical lenses?

Vertical injection machine: more suitable for making some larger and heavier products, with good fluidity and easy glue removal.


Horizontal injection machine: It is more suitable for making products with precise dimensions, because the control of the injection volume of the equipment is more accurate.


10. What is the market price of led optical lenses material?

UV protection led optical lenses silicone material: The price of domestic optical silicone material is about 150 RMB/kg, and the price of imported optical silicone material is about 250-350 RMB/kg.

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If you are interested in led optical lenses, please feel free to contact us.

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