telecentric laserprojector

STRUCTURED LIGHT AND
LASER BEAM SHAPING SOLUTIONS
TELECENTRIC LASER PROJECTOR
Telecentric micron thin line projector for high precision 3D structured lighting
inspection applications.
FEATURES
Constant thickness over entire line length
Line thickness down to 5μm
Collimated line length
Line length up to 100mm
Reduced image occlusion
Uniform line intensity profile
Telecentric Laser Projector (TLP) provides parallel non angular laser line illumination as opposed to conventional lasers lines that projects a diverging fan. The TLP
has the advantage of reducing object occlusions on your image plane critical for 3D high precision structured lighting applications. In these applications the TLP
evenly illuminates the complete part under inspection in order to achieve the measurement accuracy required.
STANDARD LASER
TELECENTRIC LASER
Object occluded
No occlusion
INTENSITY DISTRIBUTION ON A FLAT SCREEN
AT FOCAL POSITION
INTENSITY DISTRIBUTION ON A FLAT SCREEN
AT FOCAL POSITION
-2
Line thickness
Line thickness
-2
0
2
4
0
2
-2
-1.5
-1
-0.5
0
0,5
1
1.5
2
4
-2
-1.5
-1
-0.5
0
0,5
Line length
Line length
Varying line thickness
Constant line thickness
1
1.5
2
Another advantage of the TLP is that its thickness is constant over its entire length. In applications such as semiconductor inspection, it is very important to
have micron thin line over the entire length. With conventional fan out laser lines it is not possible to have both a thin line over a wide field due to depth of focus
limitations. With the TLP, its parallel non angular illumination design allows for constant micron thin lines over large field of views.
MODULATION
The Telecentric Laser Projector can be modulated by an external 0 to 5V external
signal through the white wire. The S type modulation is included by default with
the Telecentric Module.
FUNCTION
CODE
ON
OFF
TTL
Reverse TTL
T
RT
0 to 2V
3 to 5V
3 to 5V
0 to 2V
100%
80%
20%
0%
0
SPECIFICATIONS
< 3 mrad
≈ 0.25 nm/ degC
< 6 μrad/°C
< 5μ sec, 100% modulation depth (10 Kohm input impedance)
ESD, Over voltage (up to 30 VDC), Over-temp Shutoff (> 50 deg C)
< 3 %, 2 minute warm up time
5 ± 0.5VDC, 4.5 to 30V Optional (9-30V for < 635 nm)
-10 to to +50 °C (housing)
< 1500 g
18 inches 3 conductors Belden 9533, with flying leads
Level 4
30g, 6ms, functional
MECHANICAL SPECIFICATIONS
Example of 10, 55 and 100mm TLP Shown
RS
Optimal
40%
Note: One modulation input needs to be selected, S (default), RS, T or RT
Bore sight (mrad) Wavelength Drift Pointing Stability
Modulation Rise/Fall time
Protections (Built in) Long term Power stability (8 hours) Operating Voltage Working Temp Range Weight
Power Supply Cable ESD Protection
Shock Tolerance
S
60%
2
4
TELECENTRIC SINGLE LINE GENERATOR
FIG 1 - INTENSITY DISTRIBUTION ALONG THE LINE
FIG 2 - LINE STRAIGHTNESS
1
1.5
1
0.8
0.5
0
Relative intensity
0.6
-0.5
0.4
-1
-1.5
-1.2
0.2
0
-1
-0.8
-0.6
-0.4
-0.2
Best linear fit
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
Normalized Fan angle
0.4
Fan angle defined at 80% intensity clip level
0.6
0.8
0
0.2
0.4
0.6
0.8
Max deviation ∆
1
1.2
Line shape
1
Relative intensity distribution
SPECIFICATIONS
SPECIFICATIONS
VALUES
Uniformity
Imax – Imin Imax +Imin
(line intensity distribution along the line)1
Relative intensity clip that define the fan angle
Contained energy Energy in fan angle
In the fan angle
total energy
Line Straightness ∆
L (line lenght)
(deviation from the best linear fit)1
20% (typical)
≤7.5%
80%
≥95%
≤0.1%
≤0.05%
Uniformity and straightness are measured at 80% of the fan angle (100% for SL Plus).
1
ORDERING CODE
TLP -
XXX
-
Wavelength
XXX
-
Diode Power
X
-
Electronic
405, 450
1
S
Up to
520, 635
to
RS
100mm
660, 830nm
260mw
X
-
XX
-
Line Length Line Tickness
Down to XXX-XX
-
Working Distance
XXXXX
Option
To specify
SD
5μm
24V
T
RT
Example: TLP - 405 - 125 - RT- 55 - 20 - 190
OSELA inc. 1869 32nd Avenue, Lachine, QC, H8T 3J1 Canada [email protected] 514 631.2227 osela.com