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Table of Contents

Definition

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

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

Formula BSDF | 金莲直播

?? ??

  • L: ??? ???? ?? ?? ??
  • E: ?? ???? ?? ?? ??
  • Λ: ??
BSDF, input light, and observer direction | 金莲直播

??? ? ??? ????? ?? ? ??? ????, 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 金莲直播 offer for measuring BSDF?

金莲直播? BSDF ??? ?? ?? ???? ?????? 

 

BSDF? ???? ???? ???????? ??? ?? ?????? ? ?? ?? ??? ????. 金莲直播? ? ?? ???? ?? ?????. 

Goniophotometer

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

 

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

金莲直播? ??? ??????? ???? ?????. 金莲直播 REFLET 180S ? High Specular Bench.

金莲直播 REFLET 180S and 金莲直播 High Specular Bench | 金莲直播

金莲直播 High Specular Bench? ?? ??? ????, ??? ?? ?? ??? ?? 金莲直播 ??? ??? ?? ?? ??? ?? ???? ?????. ???? ????? 金莲直播 REFLET 180S? ???? ? ????. 

  金莲直播 REFLET 180S 金莲直播 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? ??? ?? ????. 

金莲直播? ? ?? ??? ?? ???? 金莲直播 Mini-Diff V2? 金莲直播 Mini-Diff VPro? ?? ? ????, ? ?? ?? ??? ? ????. 金莲直播 Mini-Diff VPro(??)? ?? "??" ? ?? ?? ??? ?? ?????. Mini-Diff V2(???)? ?? ???? ?? ??? ? ?? ??? ?? ?????.

金莲直播 Mini-Diff VPro and 金莲直播 Mini-Diff V2 | 金莲直播
  金莲直播 Mini-Diff V2 金莲直播 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 金莲直播 REFLET 180S and design with LucidShape

金莲直播 REFLET 180S? LucidShape? ??? ?? ???? ?? ? ?? ?? 

 

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

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

Example of a dashboard measurement with 金莲直播 REFLET 180S | 金莲直播

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

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

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

LucidShape simulation | 金莲直播

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

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