2OM-1104-001.pdf - 第37页

(6) Level Set the threshold levels of the fiducial marks. High : Both identity and similarity between the shape of a fidu- cial mark and the real image are detected on a high level. Middle : Either identity or similarity…

(3) Size D1 and Size D2

Set the dimensions of fiducial marks.

Unit: mm

Refer to "Type and Size" in "(8) Fiducial Marks" for details.

(4) Rcg. Area

Set the recognition areas for the P.E.C. and screen recognition

functions.

Unit: mm

Set preferably small values to avoid false recognition and shorten

recognition time.

Fig. 3B44

(5) Pol.

Set polarities of the mark patterns for images captured by the cam-

era.

Select either mode according to the difference in contrast between

a mark pattern and its surrounds to get a clear fiducial image.

Bright : Bright Fiducial/Dark Background

Dark : Dark Fiducial/Bright Background

Wrong mode selection causes malfunction of fiducial mark

recognition.

Recognition Area

(Complete Square)

Mark Dimension

Rcg. Area

05.0

Fig.3B43

Size D1

Size D2

0.50

0.00

Fig.3B42

Pol.

Bright

Fig.3B45

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1.2 Operation Data

(6) Level

Set the threshold levels of the fiducial marks.

High : Both identity and similarity between the shape of a fidu-

cial mark and the real image are detected on a high level.

Middle : Either identity or similarity between the shape of a fidu-

cial mark and the real image are detected on a middle

level.

Low : Both identity and similarity between the shape of a fidu-

cial mark and the real image are detected on a low level.

Identity:

Identity between the shapes of the specified mark and the

real image (including the size)

Similarity:

Similarity between the shapes of the specified mark and

the real image

(7) Lighting

A lighting mode can be specified to illuminate the P.C.B.

Only “Normal” can be selected for the standard machine (stan-

dard specifications).

Normal

Select this when there is enough difference in contrast between a

fiducial mark and a P.C.B. (Recognition by Pattern Matching

Method)

Fig. 3B48

P.C.B.

Fiducial Mark

(Bright)

Level

High

Fig.3B46

0106-002 Chapter 1 2 14 AFU01EDTP

1.2 Operation Data

Lighting

Normal

Fig.3B47

(8) Fiducial Marks

P.E.C. Fiducial Marks

Material

• Copper Leaf (Au and Ni plating possible but mirror surfaces cannot be used.)

• Solder-Plated Marks (Consult our marketing department for details.)

• Solder Leveler (Consult our marketing department for details.)

Type and Size

Table 3B2

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1.2 Operation Data