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  • LTPRHP3W series

LTPRHP3W series

3W LED pattern projectors

Opto Engineering® CATALOG

NEW: Infrared model now available
Overview
Models
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Related
Tech info
Projection
Patterns
Resources

LTPRHP3W series features advanced and efficient LED projectors for structured light applications such as, quality control, 3D reconstruction, 3D profilometry, stereovision, planarity control, robot guidance for pick and place and alignment applications.

Unlike laser sources, which typically show poor line sharpness and power distribution as well as scattering, speckle and diffraction effects, LTPRHP3W pattern projectors integrate LED sources and precisely engraved patterns ensuring thinner lines, sharper edges and more homogeneous illumination.

LTPRHP3W series is available in different colors and features a wide selection of projection patterns (see PTPR series) which can be easily interchanged to project any kind of shape. Additionally, LTPRHP3W features built-in phase- adjustment for easy alignment of the pattern. Any C-mount optics can be interfaced to project areas with different sizes.

LTPRHP3W LED projectors integrate built-in electronics that control the current flow through the LED and can be easily tuned by the user.

KEY ADVANTAGES

  • LED technology for perfectly sharp edges
    Thinner lines, sharper edges and more even illumination than lasers
  • Wide selection of projection patterns available (custom-made upon request)
    Chrome-on-glass patterns with geometrical accuracy down to 2 μm
  • Compatible with any C-mount optics
  • Precise light intensity adjustment
  • Easy LED source replacement
LED PATTERN PROJECTORS
LTPRHP3W series
LTPRHP3W-x models featuring built in electronics with multi-turn trimmer for light intesity dimming and ≈ 3W power intensity.
LTPRHP3W-x models featuring built in electronics with multi-turn trimmer for light intesity dimming and ~ 3W power intensity.
LTPRHP3W-x models featuring built in electronics with multi-turn trimmer for light intesity dimming and ≈ 3W power intensity.

LTPRHP3W models are designed for continuous mode and integrate built-in electronics that control the current flow through the LED.

LTPRHP3W models integrate a multi-turn trimmer for light intensity control.
The built-in electronics can be bypassed in order to directly drive the LED through an external controller.

Lighting specifications Electrical specifications Mechanical specifications
Part
number
Active
area
diameter
Light
color,
peak
wavelength
Illuminance Operating
mode
Supply
voltage
Power
consumption
LED
forward
voltage
typical
(max)
Max
pulse
current
Mount Diameter Length
(mm) (klux) (V) (W) (V) (mA) (mm) (mm)
1 2 3 4 6 6
LTPRHP3W-R 11 red, 625 nm 9 Continuous and strobe 12-24 4.5 2.4 (3) 2000 C 38.5 90.8 Quote
LTPRHP3W-G 11 green, 525 nm 14 Continuous and strobe 12-24 4.5 3.3 (4.0) 2000 C 38.5 90.8 Quote
LTPRHP3W-B 11 blue, 460 nm 3 Continuous and strobe 12-24 4.5 3.3 (4.0) 2000 C 38.5 90.8 Quote
LTPRHP3W-W 11 white, 6000 K 30 Continuous and strobe 12-24 4.5 2.8 (-) 2000 C 38.5 90.8 Quote
LTPRHP3W-IR850 11 IR, 850 nm n.a. Continuous and strobe 12-24 4.5 1.5 (2) 2000 C 38.5 90.8 Quote
Last update 15 Apr 2022

Notes

  1. With a 35 mm lens, F/N 1.4 at 100 mm working distance without projection pattern at maximum driving current. Estimated value.
  2. To pulse LTRPHP3W, models built-in electronics must be bypassed in order to drive the LED directly.
  3. Tolerance ± 10%
  4. At max forward current. Tolerance is ± 0.06V on forward voltage measurements
  5. Max continuous LED driving current is supplied through the built-in electronics. No external controller is required.
  6. At pulse width <= 10 ms and duty cycle <= 10%. Built-in electronics board must be bypassed (see tech info)
  7. At 55 °C, 720mA.

Technical documents

Product user guide
pdf
LTPRHP3W Manual
pdf
LTPR pattern positioning
pdf
Safety warning UV/IR
pdf
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If you are looking for a matching lens, refer to our wide range of optical solutions

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A wide range of solutions for every machine vision challenge.

Macro & Fixed focal length lenses

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For high precision control of our LED lightings, see our range of LED controllers

Strobe controllers

LTDV series

LED Strobe controllers
LTIC Series main image

LTIC series

LED lighting controllers

To power our pattern projectors, refer to

power_supply

PS series

Power supplies

Interested in projection patterns? Discover

Projection patterns

PTPR series

Projection patterns for LED projectors

Looking for higher power LED pattern projectors?

LTPRXP series

LTPRXP series

10W continuous LED pattern projectors
LTPRUP series

LTPRUP series

90W strobe LED pattern projectors

Take a look also at our tiltable LED pattern projectors

LTPRSMHP3W high power pattern projector with Scheimpflug adjustment

LTPRSMHP3W series

3W tilting LED pattern projectors

Projection lens selection

Any C-mount optics for 2/3” sensors (11 mm image diagonal) can be interfaced with LTPRHP3W series to project areas with different sizes. Unless the projection optics introduces significant distortion, the shape of the projected pattern will preserve the features and aspect ratio of the engraved pattern.

The projected area dimensions will be “M” times the original dimensions of the pattern, where M is the optical magnification at which the selected projection lens is operating.

Telecentric lenses for 2/3” sensors can also be interfaced with LTPRHP3W models, thus providing telecentric projection of the pattern and enabling unparalleled performance in 3D measurement applications.

Pattern drawing and projection area
Projection distance and projection diameter

Below follows a list of the projection diameters (D) and the recommended projection distances (P.d.) achieved with different types of optics.

2-3″ C-mount lenses

P.D. @50 @75 @100 @150 @200 @250 @300 @400 @500
mm mm mm mm mm mm mm mm mm
Focal
length
D (Projection diameter)
(mm)
6 mm 81 127 172 264
8 mm 58 (*) 92 127 195 264 333
12 mm 35 (*) 58 (*) 81 127 172 218 264
16 mm 41 (*) 58 (*) 92 (*) 127 161 195 264 333
25 mm 55 (*) 77 (*) 99 (*) 121 (*) 165 209 (*)
35 mm 68 (*) 83 (*) 115 146

(*) = spacers may be needed to compensate back focal length

Standard C-mount lenses + LTRHP3W
Standard C-mount lenses + LTRHP3W

Telecentric lenses

TC23004 TC23007 TC23009 TC23016 TC23024 TC23036
P.d.(mm) 56.0 60.1 62.2 43.1 67.2 102.5
D.(mm) 5.5 8.3 11.0 20.8 31.4 45.2
TC23048 TC23056 TC23064 TC23072 TC23080 TC23096
P.D.(mm) 132.9 157.8 181.8 226.7 226.7 278.6
D.(mm) 59.8 70.0 80.0 89.9 99.7 117.8
Bi-telecentric lenses + LTRHP3W
Bi-telecentric lenses + LTRHP3W

Pattern selection

Pattern selection

The projection pattern can be easily interchanged by unscrewing the retaining ring that holds the pattern. The pattern outer diameter is 21 mm, while the active projection area is a circle of Ø 11 mm.

Pattern structure

The pattern drawing could either cover the entire 11 mm diameter area or be of any shape inscribed within this area (such as a square whose side is 7.78mm or a 8.8x6.6mm rectangle). The projection accuracy depends both on the pattern manufacturing accuracy and the distortion of the projection optics mounted on the projector.

The edge sharpness of the projected pattern depends on both the lens resolution and the engraving technique: laser-engraved patterns (part numbers ending in “L”) or photolithography-engraved patterns (part numbers ending in “P”) can be chosen depending on the type of application.

Standard patterns


Custom-made patterns

custom_schema_en

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