Huvitz CRK-1, Service Manual, Page: 21 / 88

20 Auto Ref/Keratometer CRK-1 ------------------------------------------------------------------------------------------------
22: Collimation lens
23: Light source(R)
24: Relay lens
25: Reflection mirror
26: Relay lens
27: Moving lens to compensate refractive power
28: Imaging Lens for Refractometer Signal
29: TV camera(R)
30: Moving module to compensate refractive power
R = Refractometer
K = Keratometer
C = Color imaging
Light Paths of the System
Ａ
: External illumination
(2-1, 2-2

1)
Ｂ
: Corneal observation system
(1

5

6

7

8

9

10)
Ｃ
: KER measurement system
(3-1, 3-2,

1

5

6

7

8

9

10)