SELFOC® LENS ARRAY
Smaller system size, easy installation, uniform linear image transmission
SELFOC® Lens Array (SLA) typically comprises one or two rows of micro gradient-index lenses (SELFOC® lenses) arranged in an array.The images from adjacent lenses overlap and form a continuous linear 1:1 image, and with this unique feature, it is used as a key component in a broad range of line scanning systems and electrophotographic printing systems.
In addition to the current broad product line-up, we have recently developed a brand-new lens called "SLA-5DG" to meet the rapidly growing demand for the industrial inspection market. With twice the depth of focus (DOF) of the conventional SLA, the new lens array can be used in an even wider range of machine vision applications.
The remarkably short working distance (L0) of SLA, ranging from around 2 to 20mm, allows a significant reduction in the overall size of the system.
In addition, since SLA forms an erect 1:1 image, the lens array does not require any other lenses or mirrors in the system, unlike ordinary lenses. With this feature, SLA produces a very simple and competitively-priced optical system.
Comparison of scanner structure of reduced optics (left) and CIS (right).
Because of its flat form, SLA does not require any specific lens holders, and compared with ordinary lenses, its installation is extremely simple and easy.
SLA provides uniform resolution and light intensity over its entire length, whereas ordinary lenses have peripheral distortion.
Various types of lens products are available in a range of size and optical performance depending on the applications and requirements.
The maximum width of SLA is up to approximately 1m.
The erect 1:1 image transmission by SLA