Wuxi OptonTech Ltd. offers microlens arrays made of full fused silica or plastics with fill factor up to 100%. The diameter or side length of each individual microlens can be as small as 1 micron and up to 1000 micron. The sag height ranges from 0.1 micron to 70 micron. Correspondingly the focal length of the microlens array can be from sub-micron to 20,000 micron at visible wavelengths. The microlenses can either be spherical or aspherical. Specifications outside the ranges stated here are also possible upon customers‘ request.

Illustration of refractive and diffractive micronlens array

 

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Surface profile of 250 micron microlens array. The scattered spots represent a perfect spherical profile. The non-symmetry is caused by the measurement error of the profilometer, which is ideal to measure the height differences but may have error during the measurement of continuous profiles. The radius of curvature at the vertex of the profile is 547 micron. The conic constant is approximate 0.5.

AFM picture of 14 micron microlens array. The non-symmetry is caused by the measurement error of AFM, which is ideal to measure the height differences but may have error during the measurement of continuous profiles

100x100 micron microlens array, fabricated by Wuxi OptonTech Ltd. Fill factor 100%, focal length 549 micron. 

 

Focal spots generated by microlens array fabricated by Wuxi OptonTech Ltd. It can be seen that the focal spots are very clean, and there is no stray light around the focal spots.

Item Number	Shape	Pitch （micron）	Number of microlens	Dimension	ROC（micron）	focal length (micron）	ROC error
MLA-R14	Round	Φ14			7~15	12~36	<+/-5%
MLA-S14	Square	14x14			7~15	12~36
MLA-S25	Square	25x25	248x184	6.2x4.6	~17	~37
MLA-S80	Square	80x80	625x625	50x50	~58	~120
MLA-S96	Square	96x96	105x210	10x20	1440	~ 3000
MLA-S120	Square	120x120	83x126	10x20	2250	~ 5000
MLA-R150	Round	Φ150	32x32	4.8x4.8	200~690	450~1500
MLA-S150	Square	150x150	32x32	4.8x4.8	200~690	450~1500
MLA-S150-170	Square Arrival on 2016.11.1	150x150	148x148	22.2x22.2	138~170	138~170
MLA-R250	Round	Φ250	24x24	6x6	547	~1000
MLA-S250	Square	250x250	24x24	6x6	547	~1000
MLA-R400-f10000	Round	Φ400	17x17	14x14	4570	10,000
MLA-R400-f13500	Round	Φ400	17x17	14x14	6091	13,500
MLA-H50-43.3	Hexagon	50x43.3			28.33 （height15 micron）	~62
MLA-R825-f13000	Round	Φ825	17 x17	14 x14		13,000
MLA-C-1300-f29500	Cylindrical	1300	25x25	35x35	13,500	29,500
MLA-C-1300-f53000	Cylindrical	1300	25x25	35x35	24,400	53,000
MLA-C-1300-f95300	Cylindrical	1300	25x25	35x35	43,800	95,300

Top-hat beam shaping elements Image generation (general beam shaping) elements Beam splitting elements Beam homogenizer (diffuser) Microlens array Phase gratings for optical linear encoders DOEs for motion sensing and gesture recognition systems Laser keyboard by a diffractive optical element

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