TCEL series by Opto Engineering® features a perfect combination of telecentric optics and liquid lenses technology allowing to significantly increase the depth of field (DOF). This is particularly important for small fields of view due to the proportionality of the DOF with the magnification.

Thanks to their optical design, TCEL lenses ensure excellent optical performances both in terms of telecentricity and especially distortion throughout the entire operating range. This makes them a perfect choice for many inspection and measurement applications spanning from electronic and semicon segments to the automotive one, from pharmaceutical to fasteners.

The electronically controlled liquid lenses enable to precisely tune the optical power of telecentric lenses adjusting the focus: this adjustment can be extremely fast with response times in the order of few milliseconds. The driver comes as a compact USB-powered current source with free software and can be used as a stand-alone solution or integrated into OEM designs. Communication follows an open simple serial protocol, which can be implemented in any programming language on Windows or Linux (C#, Labview and Python source code available).

KEY ADVANTAGES

Extended depth of field
Thanks to the integration of liquid lenses it is possible to significantly extend the DOF of telecentric optics
Excellent optical performances
The optical design of the lenses allows to obtain very low distortion and superior optical performances
Precise and quick autofocus
Electronically driven liquid lenses allow for extremely fast and precise changes of focus
Detailed test report with measured optical parameters

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Don’t worry! We can integrate liquid lenses with many other models. Feel free to contact our Sales Engineers to check the feasibility.

SPECIALTIES

Mag.(x) 0.25 - 3.5 x

Telecentric optics with liquid lenses technology

			Detector type			Optical specifications						Mechanical specifications
Part number	Mag.	Max sensor size	1/3" 6.0 mm diag w x h 4.80 x 3.60	1/1.8" 8.9 mm diag w x h 7.13 x 5.33	2/3" - 5MP 11.1 mm diag w x h 8.50 x 7.09	WD range	wF/#	Telecentricity typical (max)	Distortion typical (max)	Field depth	CTF@ 35 lp/mm	Mount	Length	Diam.
	(x)	(mm)	(mm x mm)	(mm x mm)	(mm x mm)	(mm)		(deg)	(%)	(mm)	(%)		(mm)	(mm)
			1			2	3	4	5	6			7	8
	0 dpt		Object field of view (mm x mm)					0 dpt	0 dpt		0 dpt
TCEL23036Telecentric lens for 2/3" sensors with integrated liquid lens, mag. 0.243X	0.243	2/3"	19.8 x 14.8	29.3 x 21.9	35.0 x 29.2	73.3 - 122.8	8	< 0.08 (0.1)	< 0.04 (0.1)	7.0	> 65	C	166.1	76.5	Quote
TCEL050Telecentric lens for 2/3" sensors with integrated liquid lens, mag. 0.50X	0.500	2/3"	9.6 x 7.2	14.3 x 10.7	17.0 x 14.2	112.2 - 146.5	12	< 0.04 (0.08)	< 0.1 (0.2)	2.5	> 60	C	130.8	70.0	Quote
TCEL066Telecentric lens for 2/3" sensors with integrated liquid lens, mag. 0.67X	0.670	2/3"	7.2 x 5.4	10.6 x 8.0	12.7 x 10.6	112.3 - 146.0	12	< 0.04 (0.08)	< 0.1 (0.2)	1.4	> 58	C	149.3	70.0	Quote
TCEL075Telecentric lens for 2/3" sensors with integrated liquid lens, mag. 0.75X	0.750	2/3"	6.4 x 4.8	9.5 x 7.1	11.3 x 9.5	112.5 - 146.0	12	< 0.07 (0.1)	< 0.1 (0.2)	1.1	> 55	C	155.0	70.0	Quote
TCEL100Telecentric lens for 2/3" sensors with integrated liquid lens, mag. 1.00X	1.000	2/3"	4.8 x 3.6	7.1 x 5.3	8.5 x 7.1	117.9 - 142.1	12	< 0.08 (0.1)	< 0.05 (0.1)	0.6	> 60	C	126.0	70.0	Quote
TCEL150Telecentric lens for 2/3" sensors with integrated liquid lens, mag. 1.50X	1.500	2/3"	3.2 x 2.4	4.8 x 3.6	5.7 x 4.7	117.9 - 142.1	16	< 0.08 (0.1)	< 0.05 (0.1)	0.4	> 50	C	140.4	70.0	Quote
TCEL250Telecentric lens for 2/3" sensors with integrated liquid lens, mag. 2.50X	2.500	2/3"	1.9 x 1.4	2.9 x 2.1	3.4 x 2.8	117.8 - 142.2	20	< 0.08 (0.1)	< 0.05 (0.1)	0.2	> 40	C	157.0	70.0	Quote
TCEL350Telecentric lens for 2/3" sensors with integrated liquid lens, mag. 3.50X	3.500	2/3"	1.4 x 1.0	2.0 x 1.5	2.4 x 2.0	117.8 - 142.2	24	< 0.08 (0.1)	< 0.05 (0.1)	0.1	> 30	C	174.7	70.0	Quote

Last update: 2021-06-22

Notes

Field of views are calculated at 0 dpt power of the liquid lens.
Minimum and maximum working distance are reported at nominal range of the liquid lens; maximum excursion may be larger.
Working F-number: the real F-number of a lens in operating conditions.
Maximum angle between chief rays and optical axis on the object side.
Percent deviation of the real image compared to an ideal, undistorted image: typical (average production) values and maximum (guaranteed) values are listed.
At the borders of the field depth the image can be still used for measurement but, to get a perfectly sharp image, only half of the nominal field depth should be considered. Pixel size used for calculation is 3.45 μm.
Measured from the front end of the mechanics to the camera flange.
Maximum side dimension; the lens has an asymmetric shape.

a Performances calculated with monochromatic light (LED emission); performance range in white light is smaller

b Performances guaranteed when used with vertical optical axis; when used with horizontal optical axis performances drops due to gravity induced aberration of the liquid lens

Ordering information

Hirose cables and Liquid Lens Driver sold separately.
Coaxial lighting can be integrated into selected models: contact us to verify its feasibility

Technical documents

Data table (Last update: :2021-06-22)

XLS

Press & marketing content

Metrology white paper

pdf

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LTLADC series

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LTRNST series

LED ring illuminators - straight type

LTBC series

Continuous LED backlight

LTBFC series

Continuous flat side-emitting LED backlights

LTBRDC series

Continuous LED bar lights

LTCXC series

Continuous LED coaxial lights

CMBS series

45° beam splitters

CMMR series

45° first surface mirrors

WI series

Protective windows for lenses

CMHO series

Clamping mechanics for lenses

PTTC, PTCP series

Accurate calibration patterns for machine vision

ELDV series

Controllers for liquid lens modules

LTPR series

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COE-G series

GenICam® PoE C-mount cameras

COE-U series

GenICam® C-mount USB3 cameras

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USB3 cameras with Smart Features

mvBlueCOUGAR series

GigE / Dual GigE cameras with Smart Features

Instead of using a bigger lens (left) and a higher resolution camera to compensate, with TCEL series (right) it is possible to extend the DOF of a lens that is properly dimensioned for the sample.

Application example

Focus in various objects with different height.

Both the driving current and the magnification are linearly proportional to the working distance, allowing the system to be calibrated to compensate for the inevitable variations in magnification due to the liquid lens (by way of example, the graphs relating to the TCEL23036 lens are shown).

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