DE-R 231 Diffractive Optical Element
• Element Number: DE-R 231
• Current Product Revision: A
• Description: Matrix 101 x 101 Dots
• Number of Dots: 10201 Dots
• Substrate material: Polycarbonate (PC)
• Size (Ø x Thickness): 8 x 1.2 mm
• Design wavelengths: 660 nm
• Recommended wavelength range: 635-680 nm
• Minimum recommended beam diameter: 1.5-2 mm
Geometry and Diffraction Angles
Wavelength
Pattern Size @ 100 mm Distance
Pattern Angles
a
b
c
d
α
β
γ
δ
515 nm
10 mm
7.1 mm
0.07 mm
7.1 mm
5.7°
4.1°
0.04°
4.1
532 nm
10 mm
7.3 mm
0.07 mm
7.3 mm
5.9°
4.2°
0.04°
4.2°
635 nm
12 mm
8.7 mm
0.09 mm
8.7 mm
7.1°
5.0°
0.05°
5.0°
650 nm
13 mm
8.9 mm
0.09 mm
8.9 mm
7.2°
5.1°
0.05°
5.1°
730 nm
14 mm
10 mm
0.10 mm
10 mm
8.1°
5.8°
0.06°
5.8°
780 nm
15 mm
11 mm
0.11 mm
11 mm
8.7°
6.1°
0.06°
6.1°
808 nm
16 mm
11 mm
0.11 mm
11 mm
9.0°
6.4°
0.06°
6.4°
Setup
Laser diodes are the most common light source to be used with diffractive optical elements, but other laser light sources may also be used.
The DOEs are best used with collimated or convergent laser sources. The microstructure surface should be oriented towards the laser.
The 0-order spot is equivalent in size and shape to the original beam, but its power is attenuated.
Diffraction Zero Order Intensity:
Wavelength
0-Order
Intensity
515
20 %
532
15 %
594
3.0 %
638
0.6 %
654
0.2 %
687
0.2 %
751
2.8 %
808
6.0 %
描述 [描述] Design wavelengths: 660 nm