Microlens arrays are a vital part of today's optical systems. From telecommunications to machine vision, microlenses are impacting the way we live. Microlens array films are the interesting alternative solutions for all applications where miniaturization and reduction of alignment costs are necessary. Microlens array films are better devices to enhance the light output efficiency of LED and OLED with cost effective. 

 

SVG Optronics is the first company in the world to truly industrialize a 12"scale or larger UV-replication process and use it to manufacture micro-optical films per month. Through our investments in process developments, continuous improvements and a dedicated manufacturing site we intend to continue to introduce breakthroughs in this manufacturing technology as we enable our customers with ever 

better and cheaper solutions.

 

We've invented the unique  method to fabricate the micro-devices on the surface of the substrates and films. The microlens array  films are manufactured with the LIGA-like and roll-to-roll(R2R) nano-imprinting technologies with the formats from 300mm to 600mm. Structuring  of aperture arrays of microlenses is within 10um - 500um on thin films., and can be aligned into an array according to customer's requests.

 

The microlens molds are also manufactured using IC technologies like photolithography, photo-resist processing and reactive ion etching(ICP). These manufacturing technologies allow a very accurate shaping of the lens profile and a precise positioning of the lenses within an array. Different paramenters of microlens array can be designed such as NA, ROC, FOV,etc.

 

Typical delivery times: 2-4 weeks for sampling; 4-8 weeks for mass production

 

Work flow

 

Customers are needed to offer the requirements in details about the features of MLA's so that we can better understand the demands of the different applications of MLA's from customers.

Usin Wavelength of light  

Aperture size  

Focusing length  

Alignment    

micro-lens or Fresnel type   

Thickness of film or substrate   

Materials of film or substrate 

 

Typical Applications

OLED outcouple efficiency  

Cards, stickers, displays  

COMS sensor  

Fiber couplers  

3D imaging:micro-projection  

diffuser in backlight, beam uniformity  

Machine vision    

Large area microscopy  

Security and surveillance    

Medical technology 

 

Our Offer MLAF for OLED   

 

Simulation / optimization of homogeneous OLEDs with external micro optical structures for outcoupling and/or beam shaping; OLEDs with internal structures  

Fabrication of microstructures  

Fabrication of nanoscale patterned master structures

 

 

 

Tips of OLED 

 

New light source for display and illumination applications  

Thin film system on flexible and/or transparent substrates  

Optical effects like guided modes or total internal reflection cause losses  

Efficiency increase by optimizing the OLED optics possible  

Prerequisite: characterization of the systems optical properties 

 

 

 

Advantages

 

 

 

 

With the unique and proprietary technologies, the microlens array films has many advantages

 

 

high quality and cost-effective    

short delivery times: 2~4 weeks for sampling  

different NA can be fabricated according to the customer's design   

the larger size of MLAF can be ordered  

 

Features and Benefits

 

Excellent uniformity in focal length and extremely low insertion loss for 1D and large 2D array configurations 

 

 

High Transmission with Low Insertion Loss (<0.5 dB) 

 

 

Spherical Error <15nm rms, <70nm p-v 

 

 

Diffraction limited lenses possible 

 

 

Specifications of MLA films

MLA films for OLED  

PET, PC film  

Thichness of films: 30um -100um  

Alignment of MLA: array and honeycomb  

Shapes of ML's: circle, square, hexagon  

Aperture of ML:10um - 50um  

Size of film: up to 300mmx300mm

 

 

Patterned microlens array for efficiency improvement of small-pixelated organic light-emitting devices：http://www.opticsinfobase.org/abstract.cfm?uri=oe-16-15-11044 

 

MicroLens Array Films for 3D imaging and printing 

 

 

 

 

  MLA films for security    ◦PET film  

Thichness: 30um - 100um  

Alignment of MLA: array and honeycomb  

Shapes of ML's: hexagon  

Aperture of ML: 20um - 50um  

Size of film: up to 400mmx400mm 

About MLA film, it will replace its classical holographic ounterparts for high-end security authentication of currency, banknote, documents etc. 

 

 

MLA screens for 3D display and printing ◦Thickness:0.5mm-1.0mm  

material: PC plate   

Alignment of ML: array   

Shapes of ML's: circle  

Aperture:100um 

Size: customized

 

MLA BEF for BLU  ◦Thickness:125um  

Materials:PC  

Alignment: honeycomb,array  

Shape of ML: hexigon, circle  

Aperture:30um - 50um  

Size: up to 600mm 

 

 

Performances of MLA films 

 

Pitch:10um - 100um

 

 

Array Dimension:10-100mmfor the apertures of 10um - 100um,special dimension of films can be customized; 100mm or above 

 

 

Substrate: PC, PET

 

 

Thickness:0.125 - l.0 mm

 

 

Convex,concave

 

 

Alignment of array: quadratic，hexaganal

 

 

NA: 0.008 ~ 0.46; 0.（special design）

 

 

AR coating:no

 

 

Applied for : colimation diffuse film for backlight module, CMOS sensor, fiber coupler, Homogenizer, 3D imaging film for optical security

quadratic and  hexagonal

 

 

 

 

Contact Dr. Pu Donglin

email:  info@svgoptronics.com  

 

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