Comparing uniformity (1100nm vs 1150nm)

Evaluation environment
Coaxial tube:MS-150-TCD18
Objective lens: PEIR Plan 10X
Camera:BU406M(2048 x 2048, 5um)
Light source: SIS-150-AIR + band pass 1100nm / 1150nm
Inspecting object: Mirror

 

<Original image /  1100nm>                                                                                             Histogram

 

Pixels: (2048, 2048)
Mean(輝度平均値）: 190.78491044044495
Median（輝度中央値） 192.0
Standard deviation（標準偏差） 10.245408608496511

 

 

<Original image / 1150nm>

 

Pixels : (2048, 2048 )
Mean (輝度平均値）: 193.73951196670532
Median（輝度中央値）: 195.0
Standard deviation（標準偏差）: 10.082560021829519

 

 

<Gaussian distribution>

　■1150nm  ■1100nm

This graph shows 1150nm’s uniformity of brightness is stabler than 1100nm’s uniformity a little.