Topcon BM-7A - System Diagram

Appendix
87
System Diagram
Block Diagram
Spectral Sensitivity Curves
X
2
Y
Z
X2
Y
Z
Measurement angle sensor
Fixed
aperture
Objective
lens
Infrared
cut
filter
Measured
object
Aperture mirror
Condenser lens
Router filter
Silicon
photo
diode
Relay lens
Relay lens
Mirror
Reticle
Eyepiece
Buffer
X2
Analog output
connector
Y
Z
A/D
Personal
Computer
LCD
Control switch
Interface
2.0
1.5
1.0
0.5
0
400nm
500nm 600nm
700nm
BM-7A z
(
λ
)
CIE z(λ)
CIE y(λ)
CIE x(λ)
BM-7A y(λ)
BM-7A x(λ)
Relative spectral responsivity