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Success Stories | 9球体育
Success Stories
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Table of Contents

Definition

BSDF? ??? ?? ?? ??? ???, ???? ?? ???? ??? ???? ??? ?????. Bidirectional Scattering Distribution Function? ??????.

????? ??? BSDF ?? ?? ??? ????.

Formula BSDF | 9球体育

?? ??

  • L: ??? ???? ?? ?? ??
  • E: ?? ???? ?? ?? ??
  • Λ: ??
BSDF, input light, and observer direction | 9球体育

??? ? ??? ????? ?? ? ??? ????, BRDF? BTDF? ??? ?????.

  • BRDF (Bidirectional Reflectance Distribution Function, ??? ??? ?? ??)
  • BTDF (Bidirectional Transmittance Distribution Function, ??? ??? ?? ??)
Incident light, specular reflection, reflected scatter distribution BRDF, transmitted scatter distribution, BTDF, specular transmission

Why is BSDF important to an optical design?

?? ??? BSDF? ??? ??? ?????? 

 

?? ?? ???? ??? ????? ??? ??? ?? ?? ??? ?????. ??? ??? ???? ??? ??? ?????? ??? ??? ?? ????, ?????? ? ??? ??? ? ????. ??? ??? ??? ??? ??? ??? ? ???? ???? ?? ?????. ??? ??? ?? ?? ?? ??? ??? ?? ???? ?? ?????? ??? ???? ???? ????. 

 

??:

  • ?? ???? ?? ?? ?????? ?? ??? ?? ??? ?????.
  • R&D ????? ??? ??? ??? ?? ??? ??? ???? ???.
  • ?? ??? ?? ??? ???? ????? ???. 

 

???:

  • ??? ?? ?? ?? BSDF 
  • ?? ?? ? ??? TIS (??, ??, ?? ??)

What solution does 9球体育 offer for measuring BSDF?

9球体育? BSDF ??? ?? ?? ???? ?????? 

 

BSDF? ???? ???? ???????? ??? ?? ?????? ? ?? ?? ??? ????. 9球体育? ? ?? ???? ?? ?????. 

Goniophotometer

????? ??? ?? ??

 

??? ??? ??? ??? ??? ???? ?? ??? ???? ???? ???? ???? ??????? (?? ? ?? - ??? ??? ??? ??? ??)? ???? BSDF? ??? ? ????. 

9球体育? ??? ??????? ???? ?????. 9球体育 REFLET 180S ? High Specular Bench.

9球体育 REFLET 180S and 9球体育 High Specular Bench | 9球体育

9球体育 High Specular Bench? ?? ??? ????, ??? ?? ?? ??? ?? 9球体育 ??? ??? ?? ?? ??? ?? ???? ?????. ???? ????? 9球体育 REFLET 180S? ???? ? ????. 

  9球体育 REFLET 180S 9球体育 High Specular
Type
(????)		 BRDF/BTDFBRDF/BTDF
Dynamic range
(?? ??)		 109 1013
Wavelength range
(??? ??)		 400nm to 1700nm 280nm to 10,6µm
Incident angles
(?? ?? ??)		 Tunable: +90° to -90° Tunable: 90° to 0°
Angular range
(?? ?? ??)		 Full sphere 1 Plan from -10° to +90°
Angular accuracy
(???)		 < 0.1° < 0.02°
Repeatability
(???)		 < 1% < 1%
Weight
(??)		 80 kg 200 kg
Advantages
(???)
  • High dynamic range
  • Very high dynamic range
  • Measurement at 0,002° from the specular
  • High precision
  • High repeatability
  • Customizable wavelength range

Camera-Based System

??? ??? ?? ??

 

??? ??? ??? ?? ???? ??? ?? ?? ???? ??? ??? ?? ?? ??? ???? BSDF? ??? ?? ????. 

9球体育? ? ?? ??? ?? ???? 9球体育 Mini-Diff V2? 9球体育 Mini-Diff VPro? ?? ? ????, ? ?? ?? ??? ? ????. 9球体育 Mini-Diff VPro(??)? ?? "??" ? ?? ?? ??? ?? ?????. Mini-Diff V2(???)? ?? ???? ?? ??? ? ?? ??? ?? ?????.

9球体育 Mini-Diff VPro and 9球体育 Mini-Diff V2 | 9球体育
  9球体育 Mini-Diff V2 9球体育 Mini-Diff VPro
Type
(????)		 BRDF/BTDFBRDF/BTDF
Dynamic range
(?? ??)		 105 BRDF 105
BTDF 106
Wavelength range
(??? ??)		 630nm, 525nm, 465nm, 940nm 630nm, 525nm, 465nm
Incident angles
(?? ?? ??)		 Fixed: 0°, 20°, 40°, 60° Tunable: 0° to 60°
Angular range
(?? ?? ??)		 Sphere [0° ; 75°] [0° ; 360°] Sphere [0° ; 75°] [0° ; 360°]
Angular accuracy
(???)		 1° 0,5°
Repeatability
(???)		 <2% <2%
Weight
(??)		 2 kg 42 kg
Advantages
(???)
  • Plug & play
  • Easy to use & fast
  • Portable & compact
  • Attractive cost
  • Dark Box included
  • Tunable AOI
  • High repeatability
  • Attractive cost

?? ?? ??? ??? ??, ?? ???? ????? ?????? ??? ??? ??? ? ????. 

Optical Scattering Measurements & Equipment

Precision Light Scatter Data for Faster, More Cost-Effective Optical Product Development

Learn More

Example of a vehicle dashboard measurement with the 9球体育 REFLET 180S and design with LucidShape

9球体育 REFLET 180S? LucidShape? ??? ?? ???? ?? ? ?? ?? 

 

??? ???? ??? ?? ??? R&D?? ?? ??? ???? ??? ?? ?? ??? ?? ?? ??? ???? ? ??? ? ????. ??? ???? ??? ?? ? ??? ??? ??? ?? ??? ? ?? ???? ??? ???? ????.

?? ??? ?? ? ???? ??? ??? ???? ?? ????? ? ?? ???(AOI=10°/30°/50°/70°)? ?? BRDF? ?????. 

Example of a dashboard measurement with 9球体育 REFLET 180S | 9球体育

? ?? ?? ? ???? ??? ?? ? ???? ??? ???? ?????? ????.

?????? ??? ????? ??? ???? 1? ? ??? ??? ?? ??? ???? 2? ? ?? ??? ??? ????? ?????? ???? 2? ? ????? ?? ?????.

?? ???? ?? ?????? ??? ? ?? ?? ??? ? ???? ???? LucidShape?? ?????? ??? ? ????.

LucidShape simulation | 9球体育

LucidShape? ???? ???? ?????? ???? ??? ??? ??? ? ????: ???? 1? ???? ? ??? ???? 2? ???? ? ???? ???? ???? 2? ???? ???? ? ?? ? ????.

???? BSDF? ?? ???? ??? ?? ?? ??? ???? ??? ???? ???? ????? ?? ??? ??? ? ????.