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Microstructured Precision Optics
![](/fileadmin/europe/downloads/optic-solutions/_processed/fresnel_concept_general-e2a406b8.jpg)
The best known microstructured optic is the Fresnel Lens.
This is a special optical lens. Compared to a standard lens, the surface of the fresnel lens is divided into a number of concentric grooves.
Using plastic microstructured optical components offers many advantages over conventional optical products:
- significant reduction in weight, thickness and volume;
- ease in manufacturing of extremely high-aperture (fast) elements and large-area optical components;
- almost unlimited flexibility in optical design;
- cost-effective custom finishing of parts to virtually any shape and dimension.
![](/fileadmin/user_upload/_processed/orafol-fresnel-optics-contact-e2a406b8.jpg)
ORAFOL
Fresnel Optics GmbH
Flurstedter Marktweg 13
99510 Apolda, Germany
Tel.: +49 3644 50110
info@fresnel-optics.de
Productlines
Positive Fresnel Lenses
Positive Fresnel Lenses can be designed as a collimator, collector or with finite conjugates. They are usually corrected for spherical aberration.
![](/fileadmin/user_upload/_processed/fresnel_raypath_sc_en_1-e2a406b8.jpg)
![](/fileadmin/user_upload/_processed/fresnel_raypath_sc_en_2-e2a406b8.jpg)
![](/fileadmin/user_upload/_processed/fresnel_raypath_sc_en_3-e2a406b8.jpg)
Part Number | Focal Length | Facet Spacing | Fresnel Conjugate | Plano Conjugate | Clear Aperture |
SC 230 | 6.3 | 0.102 | 6.3 | infinite | 10.0 |
SC 245 | 10.8 | 0.125 | 10.8 | infinite | 6.4 |
SC 926 | 16.1 | 0.102 | infinite | 16.1 | 7.0 |
SC 231 | 16.3 | 0.127 | infinite | 16.3 | 18.0 |
SC 259 | 18.3 | 0.254 | infinite | 18.3 | 17.3 |
SC 253 | 24.0 | 0.475 | infinite | 24.0 | 23.3 |
SC 256 | 26.6 | 0.508 | infinite | 26.6 | 59.7 |
SC 258 | 28.7 | 0.635 | infinite | 28.7 | 45.0 |
SC 234 | 38.0 | 0.381 | 38.0 | infinite | 56.3 |
SC 244 | 40.8 | 0.381 | 40.8 | infinite | 86.9 |
SC 297 | 42.4 | 0.076 | 42.4 | infinite | 29.8 |
SC 252 | 48.3 | 0.076 | 48.3 | infinite | 63.3 |
SC 235 | 50.8 | 0.229 | infinite | 50.8 | 77.0 |
SC 241 | 51.0 | 0.762 | 51.0 | infinite | 109.8 |
SC 211 | 57.8 | 0.076 | 263.9 | 74.0 | 88.4 |
SC 277 | 68.5 | 0.076 | infinite | 68.5 | 88.9 |
SC 250 | 69.6 | 0.279 | infinite | 69.6 | 75.4 |
SC 236 | 72.5 | 0.279 | infinite | 72.5 | 101.3 |
SC 251 | 76.3 | 0.127 | 76.3 | infinite | 82.1 |
SC 237 | 77.5 | 0.254 | infinite | 77.5 | 59.4 |
SC 949 | 97.1 | 0.254 | infinite | 97.1 | 201.8 |
SC 242 | 101.1 | 0.305 | 101.1 | infinite | 85.8 |
SC 239 | 102.8 | 0.508 | infinite | 102.8 | 133.9 |
SC 228 | 111.8 | 0.508 | infinite | 111.8 | 164.0 |
SC 255 | 128.3 | 0.254 | infinite | 128.3 | 126.7 |
SC 948 | 129.1 | 0.350 | infinite | 129.1 | 180.5 |
SC 209 | 137.8 | 0.254 | infinite | 137.8 | 151.0 |
SC 248 | 151.7 | 0.127 | 151.7 | infinite | 152.9 |
SC 249 | 152.0 | 0.381 | 152.0 | infinite | 205.4 |
SC 223 | 152.8 | 0.254 | infinite | 152.8 | 202.4 |
SC 246 | 203.0 | 0.457 | infinite | 203.0 | 228.9 |
SC 950 | 219.0 | 0.302 | infinite | 219.0 | 223.3 |
SC 210 | 225.5 | 0.178 | 2007.0 | 254.0 | 257.6 |
SC 264 | 234.7 | 0.508 | infinite | 237.7 | 253.1 |
SC 917 | 239.6 | 0.152 | infinite | 239.6 | 386.4 |
SC 921 | 253.6 | 0.254 | infinite | 253.6 | 179.0 x 128.4 |
SC 221 | 254.1 | 0.508 | infinite | 254.1 | 255.8 |
SC 928 | 255.3 | 0.152 | infinite | 255.3 | 386.6 |
SC 208 | 279.3 | 0.508 | infinite | 279.3 | 405.8 |
SC 205 | 282.8 | 0.076 | 610.0 | 531.5 | 330.4 |
SC 268 | 304.6 | 0.508 | infinite | 304.6 | 291.9 |
SC 240 | 317.0 | 0.205 | infinite | 317.0 | 382.4 |
SC 934 | 336.5 | 0.152 | infinite | 336.5 | 386.0 |
SC 265 | 385.6 | 0.508 | 626.9 | 1013.6 | 324.0 |
SC 2045 | 391.5 | 0.508 | 6096.0 | 419.0 | 452.9 |
SC 229 | 400.0 | 0.508 | infinite | 400.0 | 386.0 |
SC 903 | 500.5 | 0.508 | 1500.0 | 750.0 | 657.0 |
SC 943 | 502.1 | 0.100 | infinite | 502.1 | 549.7 |
SC 273 | 505.5 | 0.203 | 749.0 | 1575.0 | 405.9 |
SC 214 | 607.8 | 0.508 | infinite | 607.8 | 460.9 |
SC 922 | 698.6 | 0.508 | infinite | 698.6 | 615.7 |
SC 213-600 | 763.4 | 0.508 | infinite | 763.4 | 600.0 x 590.0 |
SC 2135 | 764.0 | 0.508 | infinite | 764.0 | 437.3 |
- All dimensions in mm.
- Focal lengths listed apply to 546nm in PMMA (max. tolerance ± 5%).
- The outside size may be up to 5 - 20mm beyond the clear aperture.
- The standard thickness is 1.8mm ± 0.3.
- Other dimensions or special trimmings can be realised upon request.
- Special designs possible on request.
Negative Fresnel Lenses
A negative Fresnel lens is the opposite of a positive Fresnel lens with diverging light rays.
![](/fileadmin/europe/downloads/optic-solutions/_processed/fresnel_raypath_sc_en_d_f-e2a406b8.jpg)
Part Number | Focal Length | Facet Spacing | Fresnel Conjugate | Plano Conjugate | Clear Aperture |
SC 259 neg | -18.3 | 0.254 | infinite | -18.3 | 16.6 |
SC 239 neg | -102.8 | 0.508 | infinite | -102.8 | 139.4 |
SC 902 neg | -129.6 | 0.254 | infinite | -129.6 | 230.1 |
DC 1100L neg | -185.8 | 0.508 | infinite | -185.8 | 269.0 |
DC 427L neg | -205.7 | 0.508 | infinite | -205.7 | 302.0 |
DC 434U neg | -255.3 | 0.508 | infinite | -255.3 | 302.0 |
SC 973 neg | -508.0 | 0.508 | infinite | -508.0 | 408.7 |
SC 2135 neg | -764.0 | 0.508 | infinite | -764.0 | 436.3 |
- All dimensions in mm.
- Focal lengths listed apply to 546nm in PMMA (max. tolerance ± 5%).
- The outside size may be up to 5 - 20mm beyond the clear aperture.
- The standard thickness is 1.8mm ± 0.3.
- Other dimensions or special trimmings can be realised upon request.
- Special designs possible on request.
Fresnel Prism
A Fresnel Prism has a linear structure with a constant prism angle. It deflects collimated light with a constant deflection angle.
![](/fileadmin/user_upload/_processed/fresnel_raypath_pr_en_a-e2a406b8.jpg)
Part Number | Deflected Angle | Facet Spacing | Clear Aperture | Prism Direction |
PR 727 | 5° | 0.508 | 303.7 x 164.4 | parallel to long dimension |
PR 709 | 10° | 1.016 | 216.6 x 216.6 | - |
PR 723 | 12° | 0.152 | 165.2 x 165.2 | - |
PR 675 | 15° | 0.330 | 456.5 x 374.0 | parallel to long dimension |
PR 729 | 16° | 0.152 | 241.7 x 240.3 | parallel to long dimension |
PR 712 | 23° | 0.127 | 147.6 x 146.7 | parallel to long dimension |
- All dimensions in mm.
- Focal lengths listed apply to 546nm in PMMA (max. tolerance ± 5%).
- The outside size may be up to 5 - 20mm beyond the clear aperture.
- The standard thickness is 1.8mm ± 0.3.
- Other dimensions or special trimmings can be realised upon request.
- Special designs possible on request.
Fresnel Beamsplitter
A Fresnel Beamsplitter has a linear structure with two facets of opposite slope angles. The light is split into two beams and the included angle between the two beams is referred to as the separation angle.
![](/fileadmin/user_upload/_processed/fresnel_raypath_bs_en_a-e2a406b8.jpg)
Part Number | Separation Angle | Facet Spacing | Clear Aperture | Prism Direction |
PR 775 | 20° | 0.508 | 369.4 x 367.00 | parallel to long dimension |
PR 765 | 32° | 2.000 | 164.9 x 164.7 | parallel to long dimension |
PR 703 | 42° | 0.508 | 308.6 x 308.6 | - |
PR 757 | 51° | 1.106 | 256.4 x 206.9 | parallel to long dimension |
PR 713 | 51° | 0.305 | 340.1 x 269.2 | parallel to long dimension |
- All dimensions in mm.
- Focal lengths listed apply to 546nm in PMMA (max. tolerance ± 5%).
- The outside size may be up to 5 - 20mm beyond the clear aperture.
- The standard thickness is 1.8mm ± 0.3.
- Other dimensions or special trimmings can be realised upon request.
- Special designs possible on request.
Fresnel Cylindrical Lenses
A Fresnel cylindrical lens has a linear fresnel structure. It collects light in one direction and the result is a line image instead of a point image.
![](/fileadmin/user_upload/_processed/fresnel_raypath_cy_en_a-e2a406b8.jpg)
Part Number | Focal Length | Facet Spacing | Fresnel Conjugate | Plano Conjugate | Clear Aperture |
CY 575 | 12.7 | 0.127 | 12.7 | unendlich | 311.7 x 13.2 |
CY 585 | 37.6 | 0.254 | unendlich | 37.6 | 206.7 x 42.6 |
CY 581 | 76.2 | 0.254 | unendlich | 76.2 | 364.5 x 77.4 |
CY 570 | 138.0 | 0.254 | 390.5 | 211.7 | 1142.6 x 117.0 |
- All dimensions in mm.
- Focal lengths listed apply to 546nm in PMMA (max. tolerance ± 5%).
- The outside size may be up to 5 - 20mm beyond the clear aperture.
- The standard thickness is 1.8mm ± 0.3.
- Other dimensions or special trimmings can be realised upon request.
- Special designs possible on request.
Lenticulars
Lenticulars have linear structures where every groove has a small radius creating multiple line images. They are primarily used for projection screens and three dimensional images.
![](/fileadmin/europe/downloads/optic-solutions/_processed/fresnel_raypath_ln_en_a-e2a406b8.jpg)
Part Number | Radius | Facet Spacing | Clear Aperture | Lenticular Direction |
LN 760 | 0.077 | 0.127 | 61.5 x 61.5 | - |
LN 611 | 0.157 | 0.187 | 99.2 x 99.2 | - |
LN 615 | 0.380 | 0.763 | Ø 89.4 | - |
LN 629 | 0.483 | 0.381 | 114.3 x 114.3 | - |
LN 663 | 0.544 | 0.508 | 512.7 x 422.1 | parallel to long dimension |
LN 692 | 0.762 | 0.162 | 230.2 x 180.0 | parallel to short dimension |
LN 636 | 0.762 | 0.186 | 260.2 x 259.2 | parallel to short dimension |
LN 669 | 0.762 | 0.368 | 259.0 x 258.3 | parallel to short dimension |
LN 676 | 1.118 | 0.559 | 432.0 x 429.1 | parallel to short dimension |
LN 665 | 3.175 | 2.794 | 174.2 x 121.9 | parallel to long dimension |
- All dimensions in mm.
- Focal lengths listed apply to 546nm in PMMA (max. tolerance ± 5%).
- The outside size may be up to 5 - 20mm beyond the clear aperture.
- The standard thickness is 1.8mm ± 0.3.
- Other dimensions or special trimmings can be realised upon request.
- Special designs possible on request.
Corner Cube Retro-Reflectors
Corner cube retro-reflectors are very small, efficient prism corner reflectors that send backlight in nearly the same direction from which it came.
![](/fileadmin/user_upload/_processed/retros_prinzip-e2a406b8.jpg)
![](/fileadmin/user_upload/_processed/retro_cube_size-e2a406b8.jpg)
Part Number | Cube Size 'A' | Clear Aperture |
OT 853 | 0,864 | diameter 225,5 |
OT 867 | 0,254 | triangle 284,5 |
- All dimensions in mm.
- Focal lengths listed apply to 546nm in PMMA (max. tolerance ± 5%).
- The outside size may be up to 5 - 20mm beyond the clear aperture.
- The standard thickness is 1.8mm ± 0.3.
- Other dimensions or special trimmings can be realised upon request.
- Special designs possible on request.
Surface Relief Diffusive Microstructures
Surface relief diffusive microstructures (SRDM) are used for specifically distributing light in a defined angle range. They homogenize irregular light distributions as well as local intensity peaks.
It is also possible to apply those diffusive microstructures directly into the plano side of all our plastic optics components.
Part Number | Symmetric Half Angle | Clear Aperture | Transmission |
BP 321 | ± 2.8° | Ø 400.0 | 91 % |
BP 336 | ± 3.9° | Ø 300.0 | 88 % |
BP 302 | ± 4.0° | Ø 125.0 | 92 % |
SN 1333 | ± 4.75° | 232.0 x 232.0 | 92 % |
BP 331 | ± 5.0° | Ø 300.0 | 87 % |
BP 304 | ± 7.4° | Ø 200.0 | 89 % |
SN 1334 | ± 7.8° | 231.0 x 231.0 | 92 % |
- All dimensions in mm.
- Focal lengths listed apply to 546nm in PMMA (max. tolerance ± 5%).
- The outside size may be up to 5 - 20mm beyond the clear aperture.
- The standard thickness is 1.8mm ± 0.3.
- Other dimensions or special trimmings can be realised upon request.
- Special designs possible on request.
Microlens Arrays
Microlens arrays are one- or two dimensional periodic patterns of small lens structures (lens dimensions up to a few millimetres). We offer custom designs without limitations regarding the pattern in a wide range of microlens sizes and overall array dimensions.
It is possible to apply a microlens array directly into the plano side of all our polymer optical components.
- Standard material is PMMA (other materials on request).
- The outside size may be up to 5 - 20mm beyond the clear aperture.
- The standard thickness is 1.8mm ± 0.3 (other thicknesses > 0.8 mm on request)