· working principle c-type mirror ... c angular encoder optical type ... i test object mounting...

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Technical Specification of Goniophotometer & Goniospectroradiometric System

for setting up of LED based Lighting products & Luminaries Test Laboratory for

NTH(ER), Salt Lake, Kolkata

Three (3) copies of Technical Bids are to be submitted

The luminous intensity distribution of a luminaire is determined by measuring its illuminance at

a given distance in all possible directions in space by Goniometer. Goniophotometer (mirror C

type) consists of luminaire holder, mirror and photometer. During measurement, the mirror reflects

the light emitted by the test object towards the photometer. The photometer head positioned at fixed

distances sufficiently away from the light source to be able to evaluate it as point source.

On the basis of this data - luminous flux, luminous efficacy, average luminance of the tested

luminaires can be calculated.

By equipping a Spectroradiometer with Goniometer, the spectral characteristics of the light

source at specific angles of emission can be evaluated. The color characteristics of the source, for

example the Color Rendering Indices (CRI), the co-related color temperature and the color

coordinates can be ascertained through mathematical calculations. Thus, a complete color distribution

& evaluation of the light source can be obtained, which is especially helpful for luminaire designers of

LED luminaires to produce lighting with uniform color appearance.

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Items Features/Parameters

Scope of work

1. The successful bidder has to set up the

Goniophotometer & Goniospectroradiometric System in

the room to be provided by NTH of approximate size 24m

(L) x 6.5m(W) x 6.2m(H) (lay out diagram in APPENDIX -

1). Necessary infrastructure for setting up the same has to

be carried out by the firm.

The bidder has to categorically state the work he

intends to carry out for the above job in Technical Bid,

failing which the offer will not be considered and no

correspondence will be made. However, break up cost

for the work to be carried out may be mentioned in the

Price Bid only.

2. The successful bidder has to provide appropriate

gadgets & devices for maintaining the required

environmental conditions of Temperature, Humidity etc. as

per the requirement of specification.


intends to carry out for the above job like Air

Conditioning, De-humidifier etc. in Technical Bid,

failing which the offer will not be considered and no

correspondence will be made. However, break up cost

for the work to be carried out may be mentioned in the

Price Bid only.

3. For setting up the entire system NTH will provide 3 phase

supply of 415V±5% at 50±2.5 Hz & single phase supply of

240V±10 V at 50±2.5 Hz. Bidder will have to provide

necessary gadgets to cope up with voltage & frequency

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fluctuation for running the system, if required.


intends to carry out for the above job like providing

Constant Voltage Constant Frequency (CVCF) Source

etc., if required in Technical Bid, failing which the offer

will not be considered and no correspondence will be

made. However, break up cost for the work to be

carried out may be mentioned in the Price Bid only.

4. Short-circuit protection for the equipment is to be provided.

The bidder has to categorically state the protective

device that has been employed for the above.

1. Goniophotometer & Goniospectroradiometric System A Goniophotometer system and

Working Principle

C-type mirror Goniometric system fully automated with

computerized system & software.

The Goniometer shall be configured for operation with both

Photometer & Spectro-radiometer.

Mode selection should be fully automatic.

B Room size NTH will provide a room of approximate size

24m (L) x 6.5m(W) x 6.2m(H). The drawing of room may be

referred in APPENDIX - 1

Bidder to quote the best fit model and indicate it's model no. along

with proposed Laboratory utilisation plan.

The total room volume required for maintaining ambient

conditions such as temperature, humidity, air speed, air

pressure etc. as laid down in relevant specifications covering

NTH requirements are to be indicated.

C Goniophotometer in

accordance with

-EN 13032

-LM 75-01

-CIE Publication No. 70 (1987)

D Standards to be fulfilled by

complete system (limited to

sections applicable to

Goniophotometric and

Goniospectroradiometric

procedures only)

Indian Standard

IS 16106 : 2012 for Solid State Lighting Products

IS 16107 (Part-5/Sec-1): 2012 for LED Luminaire.

IS 16103 (Part-2) : 2012 for LED Modules for general lighting

IS 16102 (Part-2) : 2012 for Self-ballasted LED lamps

IS 10322 (Part-5/Sec-1) : 2012 for Fixed General purpose

luminaire

IS 10322 (Part-5/Sec-2) : 2012 for Recessed luminaire

IS 10322 ( Part-5/Sec-3) : 2012 for Road & Street light luminaire

IS 10322 (Part-5/Sec-4) for portable luminaire

IS 10322 (Part-5/Sec-5) for flood light luminaire

IS 13383 (Part-1) : 1992 : Method of photometric measurement of

luminaires for use in interior lighting

IS 13383 (Part-2) : 1992 : Method of photometric measurement of

luminaires for road & street lighting

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I IS 13383 (Part-3) : 1992 : Method of photometric measurement of

luminaires for flood lighting

CIE Technical Reports and Standards

CIE technical specifications covering

1) Test Method for LED Lamps, LED Luminaires, and LED

Modules

2) Photometry of Floodlights

3) Methods of Characterizing Illuminance Meters and

Luminance Meters

4) The Measurement of Absolute Luminous Intensity

Distributions

5) The Measurement of Luminous Flux

6) The Photometry and Goniophotometry of Luminaires

7) Measurement of LEDs

8) Method of Measuring and Specifying Colour Rendering

Properties of Light Sources

European standard

European standard covering

Light and Lighting Measurement and presentation of photometric

data of lamps and luminaires for LED Lamps, Modules, and

Luminaires

1.1 Goniometer

A Method of alignment of Test

Object

Motorized height adjustment of test object. Built-in alignment laser

to be provided for verification.

B Power/sense connection

between test object, power

supply, power meter

Sufficient number of Electrical connection junctions for test object

are to be provided, with all cables integrated into goniometer

framework.

The number of junctions are to be specified with utility & drawing

layout .

C Angular encoder Optical type

D Size of test object ≥1600mm in diagonal length

E Weight of test object ≥50 Kg. Appropriate counter weights are to be provided which is

to be quoted.

F Photometric test distances

Instrument shall be capable of testing at multiple test distances

covering low intensity as well as high intensity sources.

G Method of switching from one

test distance to another.

Switching shall be automatic and software controlled only.

H Stray light correction Method of integrated stray-light correction compulsory

I Test object mounting jigs Universal jig to be provided for mounting ceiling, downlights, panel

light, street light, flood light, post top light etc.

J Remote control Hand held remote system to be provided for control of goniometer

assembly.

K Measuring lampholders 4 contact, gold plated, Kelvin type lamp-holders for line and

sense, contacts at lamp base for lamp types B22, G5, G13 with

ballast, E40, E 26/27, E12, GU10, GX5.3. for easy connection to

goniometer.

L Safety Features Software operated Limit Switches or equivalent devices are to be

provided to prevent all types of rotation for mirrors, accessories

etc. where there are specified limits of rotation.

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Mirror

N Mirror base and mirror Uniformity, reflectance and flatness deviation: ≤1.5%

With manufacturer's certificate to be provided in support of above.

O Polarization effect of mirror ≤1% as per LM 79-08 sec. 9.3.5

Test/Calibration report from a laboratory accredited as per ISO

17025 or equivalent, to be provided in support of above.

P Mirror Sample A 10 cm x 10 cm sample of the mirror to be employed shall be

delivered with the system for future reference for re-calibration of

photometer head & verification of mirror characteristics.

1.2 Photometer for employment with mirror Goniometer for Goniophtometry

A Photometer Type V(λ) corrected Silicon photo detector

B Area of application Photometric measurements of test object in conjunction with the

Goniometer for evaluation of the photometric characteristics of the

object, angularly resolved.

C Lux measuring range 0.0001 lx – 80000 lx or better



D Spectral irradiance

responsivity

f1' ≤1.0% including spectral influence of the mirror.



E f' spectral mismatch

correction factor

Shall be less than 1.0 %. Indicate f' for phosphor & RGB type

white LEDs including spectral influence of the mirror,



F Thermostatic stabilisation Built-in to head

G Signal amplification Built-in to head

H Control unit Photometer display and control unit, manual control with digital

display in LUX and CANDELA for each test distance, built-in

interface for software control.

I Calibration method Calibration against a Photometric standard lamp via the

mirror.

All calibration hardware and software are to be included in

the scope of supply

1.3 Spectroradiometer for employment with mirror Goniometer for

Goniospectroradiometry

A Detector CCD or upgraded version. The bidder is to specify the detector

and justify the upgraded version, if any.

B Area of application Spectral measurements of test object in conjunction with the

goniometer for evaluation of the colorimetric characteristics of the

object, angularly resolved.

C Wavelength range 380nm-780nm

D Spectral resolution ≤3 nm

E Wavelength Accuracy 0.15 nm or better

F Colour Accuracy ≤0.002 in x, y



G Field of view Adjustable to mirror distance and diameter

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H Calibration method Calibration against a spectral standard lamp via the mirror.

All calibration hardware and software are to be included in

the scope of supply

I Software functions for

Colorimetrics with

Goniospectroradiometer

Software for computer controlled operation of spectroradiometer

in conjunction with the goniometer for computer based operation,

measurement, system calibration, and automatic test report

generation for particular measurement of the spectral values and

subsequent calculation of the colorimetric characteristics

1.4 Power Sources and Meters for Powering of Test Object

A AC power source Voltage range 0-300V, Current Range:0-16A AC at 50 Hz with

accuracy ≤ 0.2% for voltage & current.

Separate Source to be provided for test object of less than 30 W.

Input Current regulation: The input current shall be monitored

and regulated to within ± 0.5% of the rated rms value during

photometric measurements as per IS:16105-2012.

B DC power source 0-120V, 0-10A(min), with accuracy of ≤ 0.2%,the ripple voltage

shall not exceed 2% of the DC output voltage as per IS:16105-

2012.

C Power Analyzer Power Analyzer with Harmonics package with voltage/current

accuracy: ≤ ± 0.2%



D Software Software for computerised operations & data acquisition of power

source & wattmeter as well as all applicable electrical parameters

doing test along-with photometric/colorimetric data.

1.5 PC and Software

A Computer System Standard PC, Monitor, Printer inclusive of OS Windows 7 or latest

for operating the system (sense and feedback of the object under

test, performance of Goniophotometric & Goniospectroradiometric

testing, evaluation of test results, report generation etc.)

B Test routines Commonly employed test routines for general lighting applications

are pre-programmed

C Custom routines Software shall enable custom generation of test procedure by

user

D Report generation The software shall enable automatic test report generation,

documentation and visualization. Export of test data in EXCEL

E Colorimetric parameters

required to be calculated

from Goniospectroradiometric

measurements

-Chromaticity coordinates

-Correlated color temperature

-Color rendering indices R1-R16 & Ra of R1 to R8

-Δ u’ v’ as required by Energy Star requirement

-Weighted CRI

-Optional Calculation of CQS

-Flexible selection of n-step (n=1 to 7) MacAdam ellipse portrayal

around average/target color point

-3-D interactive portrayal of the measured colorimetric parameters

-Plot of spectral power distribution

-Plot of chromaticity diagrams along with Planckian Locus

-Built-in verification procedure for spectroradiometer: Calibration

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against luminous intensity, traceable to the photometer of the

system expressed in W/(sr nm)

-Scotopic/Photopic ratio

F Software reporting examples Bidders shall attach sample software reports demonstrating

Compliance

1.6 System Calibration A Standard lamps for

Goniophotometer

4 (FOUR) Standard lamps with certificate traceable to NMI/ISO

17025 for at least 2 (TWO) lamps.

Provision of Halogen incandescent lamp, FEL type, for calibration

of the Goniophotometer via the mirror with certificate issued for

lamp luminous flux, voltage, current, issued by a National

Metrology Institute / ISO 17025 accredited laboratory

Provision of suitable lampholder for connection to goniophotometer enabling electrical connection of line and sense leads to power source/wattmeter in system rack for system calibration purposes.

B Standard lamps for

Goniospectroradiometer

4 (FOUR) Standard lamps with certificate traceable to NMI/ISO

17025 for at least 2 (TWO) lamps.

Provision of Halogen incandescent lamp, FEL type, for calibration

of the Goniospectroradiometer via the mirror with certificate

issued for lamp CCT, CRI, x,y; voltage, current, issued by a

National Metrology Institute / ISO 17025 accredited laboratory

Provision of suitable lampholder for connection to Goniospectroradiometer enabling electrical connection of line and sense leads to power source/wattmeter in system rack for system calibration purposes

C Calibration of the relative

spectral sensitivity of the

photometer head

- Calibration of the relative spectral irradiance responsivity of the

photometer head(s) and mirror assembly

- Verification of the quality index of the photometer head and

mirror assembly for the V(λ) correction according to EN 13032-1

- Verification of the spectral mismatch indices of the photometer

head and mirror assembly.

Certificate to be issued in accordance with NMI/ISO 17025

D Verification of system

alignment

Verification of alignment of optical path is to be demonstrated by

means of a distance laser with calibration certificate traceable to

NMI/ISO 17025 along-with Manufacturer’s Certificate

1.7 Infrastructural Requirements

A Setting up of Laboratory

Infrastructure

NTH will provide the room for Laboratory purpose (lay out

diagram in APPENDIX-1) with wooden partition & painted matt

finish black. For housing the Goniometer assembly, the bidding

firm has to prepare necessary structures, as deemed fit at their

own cost and for which break up price is to be provided in the

price bid only, which may be in Indian Rupees.

The bidder has to categorically state the work he intends to

carry out for the above job.

B Creation of Environmental

Conditions

For maintaining the ambient conditions in the Laboratory like

Air Conditioning , Air Pressure, Relative Humidity etc. the

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bidding firm has to arrange for that, as deemed fit at their own

cost and for which break up price is to be provided in the price

bid only, which may be in Indian Rupees.

The bidder has to categorically state the work he intends to

carry out for the above job.

The total volume of the room is to be indicated where

controlled ambient conditions of temperature, humidity, air

speed, air pressure etc. will be maintained.

1.8 Training Requirement

A Training at Manufacturer site 1. Training of at least two scientists / four scientists at the

manufacturing works are to be provided. Number of days of

training for two scientists / four scientists are to be indicated

with break up cost in the price bid which include air fare,

boarding, lodging etc.

2. Training duration for two / four scientists at the manufacturing

works are to be mentioned only in the technical bid.

B Training at place of

installation

At least four scientists from NTH(ER), Kolkata should be trained

free of cost for all types of instrument related works viz.

operation, servicing, maintenance etc. for at least 10 working

days at the place of installation.

1.9 Other terms & conditions for Compliance by the Bidder :

(i) Two copies of Operation & Service Manual with electrical / electronics circuit diagrams should be

provided along with the Machine.

(ii) Original Printed Literature of the Machine quoted along with accessories etc. should be included

in the offer along with all application notes.

(iii) Accessories are to be quoted with break up cost.

(iv) The Instrument is to be installed, commissioned and demonstrated satisfactorily at NTH(ER),

Kolkata,at free of cost.

(v) Warranty 60 (sixty) months from the date of satisfactory installation & commissioning of

the equipment.

Guarantee that they will supply spare parts, as and when required for a period of at least five (5)

years after expiry of warranty period of SIXTY (60) months

(vi) Instrument down time should be attended within 48 hours and the same is to be confirmed during

submission of the bid.

(vii) Terms & conditions for servicing the machine (both CMC and AMC) after expiry of warranty period

of 60 (sixty) months is to be quoted.

(viii) The manufacturer/supplier should submit the name of institute / organization preferably from

Govt. Sector, with “Performance Certificate” where machine/ instrument of similar type &

capacity has been supplied

LMT LICH T ME SSTECHNIK GMBH BERLIN · HELMHOLTZSTRASSE 2-9 · 10587 BERLIN GER MANYP HON E :  +49-30-393 40 28 · FA X:  +49-30-391 80 01 · E-MAIL:  [email protected] · WWW.L MT.DE

Goniophotometerwith Mirror ArrangementLMT GO-DS

GO-DS DAT B404 Data subject to change without notice

Goniophotometer LMT GO-DS Technical Data

Marking LMT GO-DS Goniophotometer

Field of application Measurement and evaluation of light technical characteristics of all types of lamps and luminaries in their dedicated burning position with respect to gravity

Versions and test object dimensions

· GO-DS 1600 for test objects up to 1600 mm length (diagonal) · GO-DS 2000 for test objects up to 2000 mm length (diagonal) · Max. test object load: 50 kg

System conformity

· EN-13032-1 · CIE 121, 1996 · CIE 70, 1987 · IES LM 79-08 · Related internationally recognized standards

Tests performed

· Luminous intensity distribution in C-planes or on conical surfaces · Absolute and zonal luminous flux · Floodlight testing according to B-β system, conversion to C-γ · CIE color values, with optional colorimetric system

Goniometer type · Goniometer with centrically rotating mirror, mirror on optical axis for static and narrow light cone

Test distances · Fixed test distances to be placed at selectable positions between 5 m and 50 m · Numerous test distances possible

Straylight screening · Fixed baffles with adjustable apertures according to test distance and size of object

Mirror · Spectrally constant reflecting, non-polarizing mirror mounted in tempered aluminum base for

rigidity, flatness, and long time stability · Max. deviation in uniformity in accordance with EN 13032-1: < 1.5%

C-axis

· Test-object mounting on vertically oriented C-axis · Uninterrupted test-object rotation by means of 8-pole slip ring contact · Adjustable speed control · Motor controlled re-orientation of test object in pendant or upright position

γ-axis · Drive shaft with counterweight and forged cogged wheel for vibration free movement and reproducible positioning under load

Angular measurement · Optical angular encoders fixed to goniometer axes with guaranteed accuracy for encoder lifetime,

resolution 0.1° · Correlation of C-axis with γ-axis under rated loads at all positions: < 0.2°

Photometric system

· Characteristics in fulfillment of EN 13032-1 Table 3 · Total characteristics ≤ 3% (according to EN 13032-1, Table 3, Footnote C) · V(λ) adaptation f1 ≤ 1% by means of LMT Mosaic Filtering® with compensation for the spectral

characteristics of the mirror · Max. spectral mismatch correction factor fz against typical LED spectra for general lighting

(white LEDs 2.500 – 7.000 K): < 1% · Measurement range 0.0001 lx – 80000 lx

Colorimetric system (option)

· LMT array type spectrometric system in dedicated design for measurement of CIE color values in conjunction with mirror type goniometer

· Automatic positioning in and out of optical axis · Software routines for goniocolorimetrics according to LM 79-08 Chap 12

Electrical measurement · System integration and control of power supplies and wattmeters for supply of test objects and corresponding measurement values

Software · Complete software for system control, creation and execution of test programs, data administration,

evaluation, and export to light planning softwares · Presentation of data in graphic and text form · File import and export in IES, Eulumdat and related light-technical file formats

Building requirements · Narrow light cone of centrically rotating mirror enables building design with com pact, temperature controlled goniometer cabin and separate light tunnel for sensors

· working principle c-type mirror ... c angular encoder optical type ... i test object mounting...

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