2

S5681 is a 128-element PSD linear array. By scanning a slit-form light beam right and left based

on the slit light projection method, S5681 allows measuring a 3-D shape of the object.

Two-dimensional PSDs are classified by structure into a tetra-lateral type and a

duo-lateral type. The tetra-lateral type features high-speed response and low

dark current. The duo-lateral type offers small position detection error and high

position resolution. A pin-cushion type, which is a tetra-lateral type with

improved active area and electrodes, has a position detection error as small as

the duo-lateral type while still having the advantages of the tetra-lateral type.

Selection guide

(Typ.)

Interelectrode resistance

Vb=0.1 V

(k

Ω)

Resistance length

(mm)

Type No.

Package

Spectral response

range

(nm)

S5681

Ceramic

Active area

(mm)

0.025 × 6.375/

128 elements

100

6.375

(Typ.)

Interelectrode

resistance

Vb=0.1 V

(k

Ω)

S7848

S7848-01

Plastic

2 × 2

2 × 2

10 × 10

4.5 × 4.5

5.7 × 5.7

26 × 26

14 × 14

13 × 13

S1200

100

7

7

Tetra-lateral type

Tetra-lateral type

S1300

Ceramic

13 × 13

Duo-lateral type

S2044

Metal

4.7 × 4.7

S1880

12 × 12

10

10

10

10

S1881

Ceramic

22 × 22

Pin-cushion type

(improved tetra-lateral type)

Pin-cushion type

(improved tetra-lateral type)

Pin-cushion type

(improved tetra-lateral type)

S5990-01

4 × 4

S5991-01

Ceramic

chip carrier

9 × 9

Type No.

Package

Structure

Active area

(mm)

Resistance

length

(mm)

Spectral response

range

(nm)

1

2

3

5

6

7

8

9

4

1

2

3

5

6

7

8

9

4

Two-dimensional PSD

······························

n Examples of position detectability (Ta=25 ˚C, λ=890 nm, spot light size: φ200 µm)

lS1200

KPSDC0017EA

lS1300

KPSDC0015EA

lS1880

KPSDC0020EA

lS5991-01

KPSDC0065EA

lS7848

KPSDC0084EA

LINE INTERVAL: 1 mm

LINE INTERVAL: 1 mm

LINE INTERVAL: 1 mm

LINE INTERVAL: 1 mm

LINE INTERVAL: 0.2 mm

Works with microscopic spot light detection

320 to 1060

320 to 1100

320 to 1060

320 to 1060

320 to 1100

760 to 1100

320 to 1100

320 to 1100