DOE_Viewfinder (Viewfinder)
LD Collimators & Diffractive Optics: Pattern-Generator

Description:

LD Collimators & Diffractive Optics: Pattern-Generator

Diffractive pattern generators have a wide range of applications. In laser systems, they are used for beam shaping, allowing the laser beam to form desired shapes such as lines, circles, or complex patterns, which are essential in material processing, medical surgery, and laser printing. They play a crucial role in holography, creating holograms for data storage, security features on credit cards and passports, and 3D imaging. In optical testing and metrology, these generators produce specific patterns for testing optical components, measuring surface topography, and aligning optical systems. They are also used in displays and projection systems, including projectors and augmented reality devices, to create high-resolution and complex images. Additionally, they enhance the performance of optical communication systems by precisely controlling light propagation.

This article refers to: DOE_Viewfinder (Viewfinder) (LD Collimators & Diffractive Optics: Pattern-Generator ) - Viewfinder

DOE Item #	Description	Design Wavelength	Pattern Size @ 100 mm Distance (@ Design Wavelength)	Pattern Angles (@ Design Wavelength)	Optimum Wavelength Range	Image
FDE-R215	Viewfinder	645 nm	Width: 27 mm Height: 17.7 mm Diagonal: 32 mm	Width: 15.5° Height: 10.1° Diagonal: 18.2°	570 – 750 nm
FDE-R234	Viewfinder (Lines Square)	633 nm*	Width: 61 mm Height: 61 mm Diagonal: 86 mm	Width: 34° Height: 34° Diagonal: 47°	590 – 730 nm
FDE-R260	Viewfinder (Circle + Cross)	645 nm	Width Cross: 37 mm Circle Ø: 18.3 mm	Width Cross: 21° Circle Ø: 10.5°	570 – 750 nm
FDE-R261	Viewfinder (Dot Circle + Cross)	635 nm	Width Cross: 11 mm Circle Ø: 8.8 mm Dot Spacing: 1.1 mm	Width Cross: 6.3° Circle Ø: 5° Angle betw. Dots: 0.63°	570 – 750 nm
FDE-R262	Viewfinder (Dot Square)	532 nm	Width: 12.3 mm Height: 12.3 mm Diagonal: 17.4 mm Dot Spacing: 0.5 mm	Width: 7.0° Height: 7.0° Diagonal: 10.0° Angle betw. Dots: 0.3°	480 – 670 nm
FDE-R288	Viewfinder	650 nm	Width: 83.0 mm Height: 53.7 mm Diagonal: 98.9 mm	Width: 43.7° Height: 27.9° Diagonal: 52.6°	590 – 730 nm
FDE-R345	Viewfinder (Circle + Cross)	520 nm	Width Cross: 49.9 mm Circle Ø: 24.6 mm	Width Cross: 28.0° Circle Ø: 14.0°	500 – 540 nm
FDE-R394	Viewfinder	520 nm	Width: 65.9 mm Height: 65.9 mm Diagonal: 93.2 mm	Width: 36.5° Height: 36.5° Diagonal: 50.0°	500 – 540 nm

*Large-angle pattern that due to its symmetry properties is subject to geometrical distortion, if the DOE is used at laser wavelengths significantly different (Δλ > 50nm) from the design wavelength.