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ISO15004
This report provides information about the hazard to the examinee's eyes in compliance with
ISO15004 (1997).
1. The spectral characteristics of radiant flux exiting from this instrument are as follows:
Spectral irradiance (relative)
100
90
80
70
60
Irradiance
50
(relative)
40
30
20
10
0
300
400
2. Photochemical radiance
The photochemical radiances of each light source irradiated from this instrument to the
examinee's eyes are indicated below. All the values in the following table were measured
when the instrument was operating at maximum light intensity and maximum aperture.
(
) 1
R
f e
a r
c
o t
m
t e
y r
(
) 2
O
t u
r e
e
e y
i
u l l
m
(
) 3
E
e y
x i f
t a
o i
n
a t
3. The above values are spectrally weighted radiance on the pupil of examinee's eyes in
each wavelength.
La gives the measure for eyes in which the crystalline lens has been removed (aphakes) or
for eyes of infants. Lb gives this measure for eyes in which the crystalline lens is in place
except for infants'.
Spectrally weighted photochemical radiances La and Lb give a measure of the potential that
exists for a beam of light to cause photochemical hazard to the retina.
According to "the American Conference of Governmental Industrial Hygienist (ACGIH) -
Threshold Limit Values for Chemical Substances and Physical Agents (1995 - 1996 edition)",
at photochemical radiances La and Lb of 80 [mW/cm2/sr], 3 minutes irradiation would cause
the retinal exposure dose level to attain the recommended exposure limit.
500
600
Wavelength [nm]
R I
E
D
n i
t a
o i
n
R I
E
D
g r
e
i t
u l l
m
n i
t a
o i
n
L
E
D
Safety Information
Refractometry IRED
Outer eye illumination IRED
Eye fixation target illumination LED
700
800
900
L
a
[
m
W
c /
m
2
s /
] r
0
0 .
0
0
0
0
0 .
5
7
8
0
0 .
0
9
9
(2)
1000
1100
1200
L
b
[
m
W
c /
m
2
s /
] r
0
0 .
0
0
0
0
0 .
2
2
5
0
0 .
0
8
5
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