Opto engineering Ltclhp series User manual

LTCLHP series

Telecentric HP illuminators

Instructions manual

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LTCLHP | instruction manual

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Table of contents

1. Product overview ..................................................................................................................................................................................... pag. 3

2. Instructions for use ................................................................................................................................................................................. pag. 4

2.1 Operation options .....................................................................................................................................................................pag. 4

2.2 LED source axial position ........................................................................................................................................................pag. 5

2.3 How to replace the LTSCHP module ....................................................................................................................................pag. 6

2.4 How to replace the LED1W source .......................................................................................................................................pag. 9

3. CE conformity..............................................................................................................................................................................................pag. 10

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1. Product overview

LTCLHP series are high performance telecentric illuminators featuring excellent illumination

stability, precise light intensity tuning and easy replacement of the LED source, specically

designed to back illuminate objects imaged by telecentric lenses.

LTCLHP telecentric illuminators oer higher edge contrast when compared to diused back

light illuminators and therefore higher measurement accuracy.

This type of illumination is especially recommended for high accuracy measurement of round

or cylindrical parts where diusive back lighting would oer poor performances because of

the diuse reections coming from the edges of objects under inspection.

LTSCHP module

CB244P1500 power cable

LED1W source

optics

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+-MULTI-TURN

TRIMMER

2. Instructions for use

2.1 Operation options

LTCLHP telecentric illuminators integrate LTSCHP modules as light sources.

LTSCHP LED modules can be operated in two ways:

• standard usage option: through the built-in electronics

• direct LED control usage option

2.1.1 STANDARD usage option (LED control through built-in electronics)

Only continuous mode (constant current) is allowed.

Connection

Connect the black and brown cables to your +12 / +24 V power supply.

Light intensity adjustment

The built-in multi-turn trimmer allows to control the light (LED forward current) intensity

with a very high degree of precision: you can bring the current intensity from minimum to

maximum with 21 full turns of the adjustment screw. Simply remove the protective cap and

rotate counter-clockwise the adjustment screw to increase light intensity and vice versa.

black cable to ground

brown cable to power supply (+12 / +24 V)

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black cable to ground

blue cable (LED anode) to your power supply

or external strobe controller

Make sure not to exceed

LEDs maximum rates to avoid

electrical shorts.

2.1.2 Direct LED control usage option

Both continuous and pulsed mode are allowed; the built-in electronics can be bypassed in

order to drive the LED directly for use in continuous or pulsed mode. When bypassed, built-

in electronics behaves as an open circuit allowing direct control of the LED source. Please

note that in such case light intensity adjustment is not possible though the built-in multi-turn

trimmer.

Connection

Connect the black and blue cables as shown below (remove the LED anode protective cover):

2.2 LED source axial position

LED axial position is an important operational parameter that must be correctly set to

obtain optimal illumination homogeneity. LED axial position is adjusted at factory by placing/

removing internal or external spacers of various thicknesses.

Each LTCLHPxxx illuminator is congured by default with the number and type of spacers

needed to achieve the best illumination homogeneity with its corresponding TC23xxx

telecentric lens model.

The number and type of spacers needed to achieve the optimal light homogeneity can be

dierent when LTCLHPxxx is used in combination with TC13xxx, TC12xxx or telecentric

lenses designed for other sensor sizes.

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Rear part (red color)

LED support (gray color)

LED1W: LED source

component

Power cable

Spacers kit: includes the spacers and screws you need to

correctly congure LTSCHP1W for your specic LTCLHP model

LED source axial position is an important operational parameter: make sure to follow the

instructions in the next section to obtain optimal illumination homogeneity.

LTSCHP module

LED centering tool

to easily position

and center LED1W-x light

source

Make sure to perform this procedure in a clean, non-dusty environment in order to prevent dust

or other particles from entering your LTCLHP illuminator

2.3 How to replace the LTSCHP module

When you receive LTSCHP module, in the package you will nd the following items:

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2.3.1 Spacers selection and placement

The number and type of spacers to place in your LTCLHP varies for each part number,

depending on LED color and lens type (as shown below). When replacing a no more

operational LTSCHP module or LED source, make sure to preserve the same spacers

conguration of your LTCLHP unit. The following table is provided as a reference and lists

the number and thickness of the spacers to be placed in order to correctly congure your

LTCLHP telecentric illuminator.

Part

number

Light color,

wavelength

Theoretical

LED Number of spacers

peak position Internal External

+5 -0,5 -1 -4 -5

mm mm mm mm mm mm

LTCLHP023-R red, 630 nm -

LTCLHP023-G green, 520 nm -

LTCLHP023-B blue, 460 nm -

LTCLHP023-W white -

LTCLHP016-R red, 630 nm -1.5 1 1

LTCLHP016-G green, 520 nm -1.0 1

LTCLHP016-B blue, 460 nm -1.0 1

LTCLHP016-W white -1.5 1 1

LTCLHP024-R red, 630 nm -1.5 1 1

LTCLHP024-G green, 520 nm -1.0 1

LTCLHP024-B blue, 460 nm -0.5 1

LTCLHP024-W white -1.0 1

LTCLHP036-R red, 630 nm -1.5 1 1

LTCLHP036-G green, 520 nm -0.5 1

LTCLHP036-B blue, 460 nm 0.0

LTCLHP036-W white -0.5 1

LTCLHP048-R red, 630 nm -1.5 1 1

LTCLHP048-G green, 520 nm 0.0

LTCLHP048-B blue, 460 nm +1.0 1 4

LTCLHP048-W white +0.5 1 1 4

LTCLHP056-R red, 630 nm -2.0 2

LTCLHP056-G green, 520 nm -0.5 1

LTCLHP056-B blue, 460 nm +1.0 1 4

LTCLHP056-W white +0.5 1 1 4

LTCLHP064-R red, 630 nm -2.0 2

LTCLHP064-G green, 520 nm 0.0

LTCLHP064-B blue, 460 nm +1.5 1 1 3

LTCLHP064-W white +1.0 1 4

LTCLHP080-R red, 630 nm -2.0 2

LTCLHP080-G green, 520 nm 0.0

LTCLHP080-B blue, 460 nm +2 1 3

LTCLHP080-W white +1.5 1 1 3

LTCLHP096-R red, 630 nm -2.5 1 2

LTCLHP096-G green, 520 nm 0.0

LTCLHP096-B blue, 460 nm +2.0 1 3

LTCLHP096-W white +1.5 1 1 3

LTCLHP120-R red, 630 nm -2.5 1 2

LTCLHP120-G green, 520 nm +1.0 1 4

LTCLHP120-W white +4.0 1 1

LTCLHP144-R red, 630 nm -2.5 1 2

LTCLHP144-G green, 520 nm +1.5 1 1 3

LTCLHP192-R red, 630 nm -3.0 3

LTCLHP192-G green, 520 nm +2.5 1 1 2

LTCLHP192-W white +7 2 3

LTCLHP240-R red, 630 nm -3 3

LTCLHP240-G green, 520 nm +3.5 1 1 1

Without spacers

Using spacers to adjust LED axial position

x - spacer thickness

x + spacer thickness

REFERENCE

PLANE +-

Use internal spacers to decrease the distance

between LED and lens.

Use external spacers to oset the mechanical support,

pushing the lens away from the LED.

Please note that the numbers and thicknesses listed are theoretical values and are characterized

by a certain variability: the number of spacers needed to achieve the optimal light homogeneity can

be dierent from the theoretical value listed. We suggest to start from the values provided and then

iterate until you achieve an homogeneous illumination.

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2.3.2 Assembling instructions

Follow these steps to properly assemble the LTSCHP module.

Apply a small amount of thermal

grease on top of the LED support;

if you are using internal spacers

apply grease on both sides of the

spacers. *

Position LED1W such that the black

and red cables can be inserted in

the lateral slot.

*Thermal grease not provided: make sure to use an appropriate thermal grease to improve the transfer of thermal energy across the

metal-to-metal interface (we suggest to use grease with thermal conductivity greater than 0.765W/mK).

** Use the screws with the appropriate length according to the presence of internal spacers.

Insert LED centering tool,

one dowel pin at a time.

Lock LED1W in place with two

provided screws. **

Connect the rear part to the LED

support using the provided M2X16

screws.

Now the LED1W is correctly

centered and positioned.

Pull out LED centering tool.

Insert external spacers, if needed. Screw LTSCHP module on your

LTCLHP.

Connect the power cable.

LED1W is now correctly positioned

on the LED support.

Insert connector.

1234

5678

9 10 11 12

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2.4 How to replace the LED1W source

When you receive LED1W source, in the package you will nd the following items:

LED1W: LED source

component

LED centering tool allows

to easily position and center

LED1W light source.

2.4.1 Replacement instructions

Follow these steps to properly replace LED1W source.

3 4

Turn o LTCLHP and disconnect

the power cable.

Unscrew the LTSCHP module from the

LTCLHP illuminator.

Remove any external spacers. Unscrew and disconnect the rear

part from the LED support.

Unplug the connector. Unscrew and remove the old

LED1W source.

Follow steps 1to 12 of LTSCHP assembly procedure (section

2.2.2) to complete the replacement.

LED1W source

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3. CE Conformity

Opto Engineering declares the products of the LTCLHP and LTSCHP series compliant with

the provisions of the Community Directive 2004/108/CE EN 61326-1 (measuring devices and

control laboratory) including all applicable amendments, and that all standards and/or technical

specications mentioned below have been applied:

Method Title

CEI EN 61326-1:2007-03 Electrical equipment for measurement, control and laboratory use

EMC requirements.

Part1: General requirements

CEI EN 55011:2011-02 Industrial, scientic and medical (ISM) radio-frequency equipment.

Electromagnetic disturbance characteristics, Limits and methods of measurement

CEI EN 61000-4-3:2007-04

CEI EN 61000-4-3/A1:2009-01

CEI EN 61000-4-3/A2:2011-01

CEI EN 61000-4-3/ISI:2010-05

Electromagnetic compatibility (EMC)

Part 4-3 : Testing and measurement techniques - Radiated, radio-frequency,

electromagnetic eld immunity test

CEI EN 61000-4-2:2011-04 Electromagnetic compatibility (EMC)

Part 4-2: Testing and measurement techniques-Electrostatic discharge immunity test

DISCLAIMER

Specications within this document are subject to change without notice. Photos and pictures are for illustration purposes only and may dier from the real product’s appearance.