www.sunex.com DSL203
Digital Imaging Optics
SUBJECT TO CHANGE WITHOUT NOTICE Sunex Inc.
Telephone: +001 760.602.0988
Order samples online at www.optics-online.com
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Wide Angle Security Lens
Description
The DSL203 lens is a miniature, wide-angle lens
optimized for security and automotive applications. Great
resolution and an all-glass design means stable, highquality imaging for a variety of indoor and outdoor
applications.
Key Features
• Designed for multi-megapixel resolution sensors
• Full field of view of up to 140°
• High brightness, F/2.6 aperture
• All glass design provides environmental stability
Distortion: f-θ type for easy de-warping (image height is
proportional to the input angle h=f*θ where f is the focal length).
Applications
• Security and surveillance
• Automotive rear view cameras
Table 1. Optical Parameters
Sunex PN: DSL203
Description
Wide Angle Lens
Design Imager Format
1/3”
Focal Length [mm]
2.8
F/#
2.6
Design Image Circle [mm]
5.7
Diagonal Field of View
140°
Resolution
See MTF chart
Distortion [f-θ] -18% from f-θ
Corner Chief Ray Angle [degrees]
<16°
Relative Illumination
92%
Mechanical
See drawing below
Back Focal Length [mm]
4.9
Lens Barrel Thread
M12x0.5
IR Cut-off Filter
See below
Table 2. Horizontal FOV by sensor format and size
for sensor format
1/2.5" 1/3" 1/3.2" 1/4”
with horizontal width (mm)
5.6 4.8 4.5 3.6
the HFOV is
140° 111° 102° 78°
www.sunex.com DSL203
Digital Imaging Optics
SUBJECT TO CHANGE WITHOUT NOTICE Sunex Inc.
Telephone: +001 760.602.0988
Order samples online at www.optics-online.com
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Mechanical dimensions of DSL203A (mm)
*-NIR (No IR cut-off coating)
version also available
PN DSL203A
-NIR
www.sunex.com DSL203
Digital Imaging Optics
SUBJECT TO CHANGE WITHOUT NOTICE Sunex Inc.
Telephone: +001 760.602.0988
Order samples online at www.optics-online.com
- 3 -
Optical Design Report
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