Overview and How To
SpectroMasks
Dipl.-Ing. Kai Broszioa,b; Dr. rer. biol. hum. Johannes Zauner M. Sc.c
a Federal Institute for Occupational Safety and Health (BAuA) – Group 2.2,
b Technische Universität Berlin – Lighting Technology,
Einsteinufer 19, 10587 Berlin, Germany; ka[email protected]
c Munich University of Applied Sciences – Department of Applied Sciences and Mechatronics,
Lothstrasse 34, 80335 München (Munich), Germany; johan[email protected]
Apertures
From left to right:
- CIE aperture: 50° up and 70° down starting from the edge points of the diffuser.
(CIE-aperture 2.0. f3d / .step / .stl)
- Munich aperture (Two versions: Munich aperture for adapter.f3d / .step / .stl for use with the
adapters and the original version Munich aperture.stl more universally usable but to fixate individually)
Low-reflection
The CIE aperture is also available with and without notches on the inside to reduce reflections.
(CIE-aperture 2.0 min_reflex.f3d / .step / .stl)
Adapter
for specbos model 1201 or similar: 1201adapter.f3d / .step / .stl
with 4 notches to more freely position the spectroradiometer: 1201adapter_v2 f3d / .stl
for specbos model 1211 or similar: 1211adapter.f3d / .step / .stl
with 4 notches to more freely position the spectroradiometer: 1211adapter_v2.f3d / .stl
Additional components
There are additional components for attaching the apertures with the standard diffuser:
From left to right:
large part of cuff, small part of cuff, Adapter 1211 (all for specbos model 1211 or similar / upper cuff
v6.f3d / .step / .stl and lower cuff 2.0.f3d / .step / .stl), Adapter 1201 (for specbos model 1201 or similar
/ 1201adapter.f3d / .step / .stl and 1201adapter_v2 f3d / .stl)
Mounting
Only for specbos 1211. First put the larger part of the collar on the housing (also from the bottom side
possible). Then push it forward to the stop on the device housing. Then push the smaller part of the
collar into the hole provided for it and press it tight. Finally, make sure that the cuff is properly seated
against the housing.
This part differs for the different specbos models only by the choice of the appropriate adapter. Slide
the components onto the device one after the other as shown (from left to right).
First the adapter matching the device model, then the standard diffuser and finally the aperture. (The
order of adapter and diffuser cannot be confused due to the diameters).
Field of view parameters
CIE aperture
Field of view according to CIE S026 recommendations for measurements in indoor lighting conditions.
(A) vertical section through the aperture design with +50° line and -70° line for the upper and lower
field of view boundaries; (B) selected design points on the edge of the diffusing screen; (C) complete
aperture with selected design lines.
Munich aperture
Field of view and selected sections through the aperture design.
