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Reflector CupLid – Optical Cavity Window with Al-Reflector

Surface mount Optical Reflector Window for efficent light extraction of edge-emitting Laser Diodes and LEDs in UV, Visible or Infrared

For hermetic packaging of laser diodes and LEDs Materion Balzers Optics has developed Reflector CupLids , a space-saving surface-mount photonic package with integrated mirrors on 45° -angled side-walls. Reflector CupLids form a fine-leak hermetic package by solder bonding a window cavity onto a flat ceramic submount (alumina or AlN ) under vacuum or inert gas atmosphere. Reflector CupLids are available with different anti-reflective coatings in UV, Visible or Near Infrared and can be shipped fully-furnished with tack-welded solder preforms for easy handling and assembly. For prototyping we provide several reference designs of AlN submounts for either wirebond or flipchip die-attach.

Surface mount Optical Reflector Window for efficent light extraction of edge-emitting Laser Diodes and LEDs in UV, Visible or Infrared

Benefits

  • Space-saving surface-mount photonic package for fully automated die attach and PCB assembly
  • Fineleak hermetic package with excellent heat dissipation on AlN ceramic submount
  • CupLid cavity window coated with multi-layer anti-reflective coating and Al mirrors on 45° sidewalls
  • Fully-furnished packaging solution consisting of CupLid cavity window, AuSn or SnSb solder preform & matching AlN submount


Applications

  • Automotive LiDAR systems
  • Automotive Laser Head Lights
  • Augmented Reality Laser Light Engines
  • UV Disinfection / UV Curing
  • Lighting Horticulture

Technical Data

Spectral Characteristics AR Coatings

UVC

Rabs < 0.5%, 265 280 nm, AOI<40°
Ravg < 0.4%, 265 280 nm, AOI<40°

UVA

Ravg < 0.3%, 325 375 nm, AOI<15°

Broadband
Visible AR

Ravg < 0.3%, 440 650 nm, AOI<15°
Ravg < 0.5%, 440 650 nm, AOI<30°
Ravg < 1.0%, 440 650 nm, AOI<45°
Ravg < 4.5%, 440 650 nm, AOI<60°

V-Coating
(Laser Line)

Rabs < 0.1%, for all common laser lines
Rfrom 365 nm–1550 nm

Above spectral specification are for reference only.
MWIR windows available upon request.

Mechanical Dimensions

Window size

Custom sizes available

Window thickness

0.3–1.5 mm

Spacer height

0.3–0.8 mm

Metallization

GelotTM as adhesion layer and diffusion barrier

Solder Preform on the Lip of the CupLid

AuSn or SnSb solder preform tack welded onto the lip of the CupLid, available on request

Automotive LiDAR
Augmented Reality Smart Glasses
Mechanical Drawing of an Example CupLid
Dimensions in millimeters.
Custom window size available on request. Contact us for design guidelines.
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