Kowa Industrial Lens and Camera Catalog - Catalog - Page 71
�/�"｜TELECENTRIC ��MEGAPIXEL �.��µm
Model
LM����TC
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LM����TC
TC Series
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LM����TC
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Format Size (Inch)
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● Compatible ◇ Suitable * Incompatible
�/�" macro zoom ��MP
◎ Telecentric lens with variable magnification ◎ Capable of resolving up to ��MP.
◎ Can be used as a macro lens with a variable magnification between �.�x and �.�x.
�/�" macro ��MP
◎ Telecentric lens with a fixed magnification
◎ Able to resolve up to �� megapixels
◎ Can be used as a macro lens with a magnification of �.�x (fixed).
�/�" telecentric �MP plus
◎ A lens can be selected intuitively from the pixel resolution.
◎ The optical magnification adjusting width can also be changed.
◎ Design with an optical magnification that meets �MP resolution
◎ Low distortion design with a distortion of �.��% or less
◎ A high contrast from the image center to the corners is secured.
■ Telecentric Optical System
The main feature of telecentric optical systems is that there is no variation
in magnification when adjusting the focus, and the entire object can be
imaged from directly in front. (Fig. �) Therefore, it is suitable for use when
measuring dimensions with high accuracy, such as in position measurement. In telecentric optical systems, the chief ray (the central light ray of
a light bundle from a single point on the object that is incident on the lens)
is parallel to the optical axis. When the aperture is placed in the focal
point position on the image side, the chief ray on the object side will
become parallel to the optical axis. This means that even when the object
position is changed in the optical axis direction, the image will simply
become blurred without changing the magnification.
�/�" macro ��MP
�/�" macro zoom ��MP
LM����TC
LM����TC
LO-DIS
LO-DIS
XD
XD
【 Fig. � 】
General Optical System
Telecentric Optical System
【 Fig. � 】
Object Object
A
A'
Aperture
Image
surface
Optical
axis
Chief ray A'
Focal
length
Application examples
◎ Surface inspection of silicon wafers
◎ Inspection of dirt on prisms and glass circuit boards ◎ Reading in �D codes
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◎ Hole pitch measurement
LM����TC
LM����TC
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��.�×��.�(Φ��)
�.�～�.�×
Magnification Range
Image Size (mm)
Shooting Magnification
�.�×
�.�×
W.D. (mm)
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Objective N.A.
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�.�×
�.�×
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Shooting Range (mm) �/� Inch
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��.���.�
�.���.��
�/� Inch
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�.��.�
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� Inch
Chief ray A
◎ Inspection of FPD image defect
Model
TV Distortion (%)
Back Focus in Air (mm)
Mount
Resolution
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��.��.�
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C-mount
���lp/mm
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C-mount
���lp/mm
Size (mm)
Φ��×���.�
Φ��×���.�
Temperature Range
−��°C～+��°C
−��°C～+��°C
Weight (g)
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