C9728DK-10_15 Datasheet, PDF (8/9 Pages) Hamamatsu Corporation – For diffraction, cassette type with USB 2.0 interface Photodiode area: 52.8 x 52.8 mm

Flat panel sensor
C9728DK-10
Description of terms
Blemish
Length of pixel cluster which has less than 90 % of the average sensitivity of the surrounding pixels.
Column
Bright line output adjacent to a defect line
The relative sensitivity ratio “a/b” should be 120 % or less for both vertical and horizontal
lines, where “a” and “b” are defined as follows:
a: Average sensitivity of bright line (Line A) adjacent to defect line
b: Average sensitivity of standard line (Line B) adjacent to Line A
Note that the average sensitivity of the bright line is calculated from the region adjacent to
the defect region in the defect line.
Example: See the right figure
Defect region in defect line: From pixel (J, 1) to pixel (J, 15)
a: Average sensitivity from pixel (I, 1) to pixel (I, 15) or from pixel (K, 1) to pixel (K, 15)
b: Average sensitivity from pixel (H, 1) to pixel (H, 15) or from pixel (L, 1) to pixel (L, 15)
A B CD E F GH I J K LMNOPQR S
1
2
3
4
5
6
7
8
9
Line B
10
(Column H, L)
11
12
13
Line A
14
(Column I, K)
15
16
17
Defect line
18
(Column J)
19
20
21
22
KACCC0385EB
Defect cluster
Formed with more than 3 × 3 pixels which have less
than 1/8 of the average sensitivity of the surrounding pixels.
Nonuniformity of sensitivity
16 × 16 segments are 16 × 16-divided active area excluded 1 mm
from the whole edge. Xij is defined as the average sensitivity of each
segment.
Uniformity of sensitivity is calculated as following equation.
Nonunifomity of sensitivity = ^σ
x
σ: standard deviation of 16 × 16 “Xij”
x : average value of 16 × 16 “Xij”
This is defined as defect cluster. This is not defined as defect cluster.
Normal pixel
Defective pixel
KACCC0384EB
20
pixels 62 pixels 62 pixels
20
62 pixels 62 pixels pixels
···········
16 segments
···········
···········
1 mm
Active area
1 mm
KACCC0444EA
8