Laser projection for museums Whitepaper by ROI team Proving the

Laser projection for museums
Whitepaper by ROI team
Proving the capability of the Panasonic RZ670
Executive summary
Evaluate the performance of Panasonic’s laser projector,
the RZ670 (rating 6,500lm), against a range of the best
selling lamp-lit projectors in three key verticals:
Museums &
Higher Education
Rental &
The following pages are an extract from the RZ670 laser projection
whitepaper, focusing on the results for the Museums & Galleries
industry. The evaluation was conducted across a lifetime
of 20,000 hours and against two performance measures:
Financial – Lifetime Cost of Ownership
Environment – Lifetime Carbon Emission
Technical summary
The latest generation of laser-light projectors delivers
much enhanced brightness, making laser projection
a reality for the largest halls in Museums & Galleries.
ROI team has already demonstrated the
operational superiority of laser technology
in various aspects including:
• Superior cumulated light output
• Maintenance free lifetime of 20,000
hours or more
• Power consumption adjustment
• Instant on/off capability
• Installation versatility
• Reduced environmental impact
In addition to these attributes the
Panasonic RZ670 incorporates:
Flexible operational mode
Operator can now select to maintain
brightness at a desired level
Superb colour and brightness
Across the colour spectrum, not just for
white projection
Automated Geometric Alignment function
Saving the technician time at location
(optional upgrade ET-CUK10)
Computer driven colour/brightness
adjustment function
Again saving technician time at location
(optional upgrade ET-CUK10)
Commercial analysis
ROI team’s evaluation has highlighted important operational and commercial gains
for the museums and galleries under analysis by adopting laser projection systems:
• Minimise disruption or closure of galleries to allow for maintenance
• Reduce environmental damage
• Safer and more comfortable room conditions for visitors
Lifetime performance
Museums & Galleries
Lifetime Cost of Ownership
Taking into account all costs associated with the purchase and
effective operation of a projector for this sector we find a clear
advantage for the Panasonic RZ670 compared with a range
of lamp-lit projectors:
• Panasonic RZ670:
• Conventional projectors:
Although the initial purchase price may be higher, lifetime freedom
from maintenance and lamp changes gives the Panasonic RZ670 a
Lifetime Cost of Ownership 11% lower than a range of conventional
projectors of equivalent brightness.
Lifetime Carbon Emissions
In terms of carbon emissions the lifetime comparison between the
two projector types shows:
• Panasonic RZ670:
4.76 tonnes
• Conventional projectors: 6.40 tonnes
Across its lifetime the Panasonic RZ670 produces only 74% of the
carbon emissions of a conventional projector of equivalent brightness.
1. Brighter, faster visual communication
Laser projection steps up to a new level
In our whitepaper ‘Clear Advantage for Lamp Free
This progress into larger spaces benefits museums
Projectors’, released at ISE 2013, we evaluated the benefits and galleries, where projectors are sometimes used
and prospects for an interim generation of projectors,
in combination to convey key background information
represented by the Panasonic PT-RZ370. This hybrid
to support exhibitions, and more and more to recreate
combines the best available attributes of both lamp-lit
an ‘experience’ of an era or location to bring alive an
and laser technology, to provide a laser-lit projector with
exhibition. Projectors in this setting need sophisticated
an extended maintenance-free life of 20,000 hours.
features to enable them to be used in combination to
create a concerted effect.
Brightness capability is a convincing 3,500lm, making this
the first laser-lit projector with sufficient brightness to
operate in public access environments such as museums
and galleries.
Since that study Panasonic has taken laser technology
to a new level, introducing the RZ670 family in 2014.
This projector series boasts all of the attributes and
features seen in the PT-RZ family, but with initial
brightness of 6,500lm laser technology, is now suitable
for professional use in all but the largest arenas and for
the whole range of indoor halls.
Here the gain in brightness enables projectors
to be used in entrance halls and main galleries
and in near daylight conditions to enrich the
visitors’ experience.
2. Advance of laser-lit technology
Laser-lit technology has already proved its superiority to lamp-lit in many ways.
Now it is suitable for professional use in bigger and bigger spaces.
Technical analysis
Laser technology, in the form of the Panasonic RZ670, has clear advantages for
museums and galleries, which will be detailed in following sections.
Suggested usage of laser projection vs lamp-lit projectors
Side gallery
Entrance lobby
Main galleries
Spaces with
daylight conditions
Advantages of laser as a light source
The use of the projector as a tool for public-facing visual communication and
teaching has been restricted by performance limitations of the conventional
lamp-lit projector including:
Lamp life
A projector requiring a lamp is subject to the
decay curve associated with the conventional
bulb. Manufacturers recommend that a bulb is
no longer functional and must be replaced when
brightness falls to 50% of initial output meaning
that, according to their recommendations,
the bulb must be renewed at some point between
1,500 and 6,000 hours depending on the model.
In a higher education setting a projector might
be in use 60 hours per week for 45 weeks a year,
it can be seen that the university must budget
for a lamp-change at least yearly – or face
on throughout his lecture, and accept an
uncomfortably hot and possibly darkened room
– or accept a pause of two minutes before he can
respond to a student’s question. Either way he
must switch off the projector five minutes before
the end of the lecture to ensure it can be fully
cooled before he vacates the lecture room for the
next class.
A laser projector on the other hand operates at
a much lower temperature and provides instanton/off and power-saving shutter technology.
Power consumption adjustment
deterioration and possible failure of essential
Conventional projector lamps run at 100% of
teaching equipment. It is also relevant to consider
their power requirement, producing 100% of
that, as the Panasonic RZ670 has a life of 20,000
their brightness capability, regardless of the
hours, this estate manager may need to budget
brightness of the image they are projecting. For
for 10 or more lamp changes to keep their
darker contents the additional light projected to
lamp-lit projector operational for the same period. the screen is either absorbed within an optical
Depending on the usage, similar calculation can
engine, or reflected away from the light path.
be made for museums and galleries.
Both systems produce additional heat which is
Warm-up/cool-down time
Conventional lamps need to be operated within
a very specific temperature range to avoid damage
to the lamp. For this reason a conventional
projector needs a warm-up time of up to two
minutes before it can achieve operational
brightness; it’s also essential that it must remain
connected to the power supply during cool-down
time to ensure its fans continue to cool the bulb.
Not surprisingly these requirements make
the conventional projector cumbersome in the
context of a fast-moving teaching session. The
tutor must either keep the projector switched
dissipated from the projector.
Laser diodes on the other hand are dimmable
light sources for a superior contrast ratio. They
use 100% power only when full brightness is
called for – i.e. a 100% white picture. To project
a typical mixed output of darker pictures a laser
light source will automatically reduce its power
consumption – and heat output.
It can rapidly be seen that the laser projector
represents a major advance in operational
efficiency and flexibility.
Laser light source
Lamp as light source
• Light source life span will last more than
• Bulbs no longer functional after brightness
20,000 hours
falls to 50%
• 20,000 hours maintenance free lifetime
• Lamp-life range: 1,500 to 6,000 hours
• Dust-resistant optical parts do not require filters
• Needs up to 13 lamp changes during
• Operates at much lower temperature, requiring
less energy
• Instant-on/off technology reducing power
consumption and making projector instantly usable
• More eco-friendly
• Adjusts power consumption according to room
lighting and brightness of the image
20,000 hrs lifespan
• Need to change or clean filter to keep optical
parts free of dust
• Needs up to 20 costly maintenance visits
during 20,000 hrs lifespan
• Warm-up time up to two minutes
• Cool-down time five minutes or more
• Remains connected to power supply during
cool-down time, increasing power consumption
• Bulb contains mercury and other toxic materials
• Runs at 100% power requirement at all times,
causing additional heat output
3. Brightness decay and its impact on bulb life
All types of light source (car headlights, household bulbs, etc.) exhibit brightness decay
and a limited lifetime. They are consumable items.
Conventional projector lamps show a
A laser light source on the other hand, The latest Panasonic models
Regressive Decay. This means that a lot
displays a Linear Decay – so the
incorporate a Brightness Priority
of initial brightness is lost in the early
projector loses operational brightness
Setting which enables near to full
hours of operation. The decay curve
much more slowly and in a steady
(above 80%) brightness to be
then flattens out before finally reaching
decline. This means that soon after
maintained – albeit at the cost of
50% of initial brightness, at which point
starting its lifetime a laser projector
shortening the operational lifetime
the bulb is no longer functional and
will be providing more brightness
of the projector. Panasonic are
must be changed. This means that a
than its equivalent conventional
currently working to make this setting,
conventional projector bulb will spend
lamp-lit projector.
currently available only as a factory
as much as half of its life operating at
setting, available to professional
close to half of its full capacity.
The graph opposite shows the
brightness output of two projectors,
both with an initial rating of 6,500lm:
one a conventional lamp-lit projector,
the other a laser projector. It can be
seen that the brightness of the lamp-lit
model rapidly falls below the Solid
Shine model. Even after an expensive
bulb change, the conventional model
matches the performance of the Solid
Shine model only for a short time.
Series 1 = Panasonic RZ670
LAMP = Lamp Projector
Where we compare the performance of a
conventional projector rated at 7,000lm against
that of a Solid Shine model rated at 6,500lm it
can be seen that, because of the Regressive Decay
pattern of the lamp-lit projector, after only a short
period of use, the Solid Shine model is operating
at a superior level of brightness. In the attached
graphic, the brightness of the lamp-lit 7,000lm
projector falls below that of the 6,500lm Panasonic
RZ670 model after just 159 hours of use.
Series 1 = Panasonic RZ670
LAMP = Lamp Projector
0 0
10,000 15,000
15,000 20,000 25,000
4. Cumulated light output
The best known and most widely accepted method to measure projector brightness
is the ANSI Lumen specification devised by the American National Standards Institute
(IT7.227-1998) which considers not only brightness, but also the uniformity of brightness
as projected on a screen.
However brightness ratings following the ANSI model or any
To make a meaningful comparison between projectors using
other specification are time-specific measurements which
such different light sources, we need to evaluate brightness
cannot track differences in brightness decay. Historically, this output over the lifetime of the projector. The cumulated light
limitation has been acceptable because all projectors used
output can be expressed by the equation:
similar technology and so followed a similar Regressive
Decay path.
However, as observed above, the development of the laser
projector now introduces alternative technology and the
entirely different Linear Decay path. This means that a laser
projector delivers a higher level of brightness or a greater
proportion of its operational life.
The Panasonic RZ670 with initial brightness of 6,500lm
A projector is chosen for a specific application (such as lecture
ANSI produces 12% more brightness than a conventional
hall, museum gallery, or theatre auditorium) according
projector of the same initial brightness that may require
to lighting conditions, and the brightness required to run the
four or more lamp changes within its 20,000 hours
material. Requirements may include comfortable and stress
operating lifetime.
free attention to teacher presentations in daylight conditions,
or maybe crisp and clear reproduction of content in a museum
When benchmarked against a conventional projector with
or performance context.
ANSI rating of 7,000lm, the Panasonic RZ670 (brightness
rating of 6,500lm) still produces 10% more brightness
The Panasonic RZ670 projector with an initial brightness
across the same period.
of 6,500lm ANSI produces more brightness over the same
period than a conventional projector measured initially
at 7,000lm. Therefore both are suitable or the same
applications and can be considered equivalent models.
5. Brighter and clearer colour reproduction
The Panasonic RZ670 surprises with a rating of ANSI 6,500lm providing outstanding
brightness of natural pure white at a duv value of just 0.006 – just ¼ the duv value of
lamp-lit competitors.
Supplementing this white brightness the Quartet Colour Harmoniser (Colour Wheel plus Phospor Wheel) ensures
exceptional clarity right through the BGYR spectrum. Uniquely the Panasonic RZ670 uses a four colour wheel, with
white created by combination of the four colours.
Four virtually
Colour wheel
Phosphor wheel
Laser module
segmented colours
Exceptional Colour Improvement vs. Conventional
1-Chip DLPTM projector
also contributes to a higher perceived brightness as
the brightness output per colour channel is
significantly increased. Another reason why the
of a higher brightness category.
Panasonic RZ670 can perform well against projectors
7 cols. Green
Not only does this make the colour more balanced it
Technical analysis of the capability and
Data and understanding derives from various methods:
performance of the Panasonic RZ670,
1 Questionnaire-based survey of sector professionals across 10 European
set out previously, is derived from
territories targeting:
sector analysis and in particular work
• Resellers and dealers exposed to the museums, galleries and higher
and analysis by Panasonic engineers
education sectors
working in laboratory conditions.
To evaluate the performance of the
Panasonic RZ670 in the commercial
arena ROI team gathered data for
2 Depth interviews with the above groups
3 Performance and cost data was derived from manufacturers’ product
specification sheets
the performance of the Panasonic
4 Futuresource ( provided data concerning sales
RZ670 against a range of lamp-lit
volumes and actual selling prices for projectors in the relevant sectors
projectors most purchased for each
of three key sectors:
We now examine performance and contribution of the RZ670 to the Museum sector.
Museums & Galleries
Higher Education
Rental & Staging
6. Breakthroughs for Museums & Galleries
In the Museums & Galleries sector projectors are used
Projector location
more and more widely to enhance the visitor experience,
The minimal requirement for maintenance access enables
creating a facsimile of the landscape or historic
the Panasonic RZ670 to be installed safely and out of sight,
environment against which exhibits are set. In some
with significant gains for space and visitor safety. Panasonic
galleries the entire presentation is created by projectors
laser-lit projectors are also posture agnostic – so can be
with very few actual exhibits.
installed into small existing spaces where necessary.
There is now an appetite to use projectors in large and
Reducing distraction from noise and heat emissions
well lit galleries as well as darker side rooms, and the new
Emissions from laser projectors are less than half that
generation of laser-lit projectors rises to this challenge, with
of lamp-lit competitors. In terms of noise emission the
the Panasonic RZ670 achieving an ANSI rating of 6,500lm,
Panasonic RZ670 operates at between 35db to a maximum
sufficient for large galleries and near-daylight conditions.
of 45db, largely because of a different cooling design; whilst
Advantage of laser projectors
in museums and galleries
Key factors for use of projectors in a museum
operating temperature is a maximum of 45˚C. Both of these
factors are significant in maintaining a safe environment
for preserving exhibits, and ensuring a comfortable and
tranquil experience for visitors.
environment include:
Reducing environmental damage
Minimal maintenance
Museums & Galleries, especially those in public ownership,
Many museums now open seven days per week and
have a tradition of taking leadership in environmental
stretch opening hours into the evening; so opportunities
responsibility. Unfortunately traditional lamp-lit technology
for maintenance access are rare. The RZ670, offering
has implied environmental hazard. Vans driving up and
maintenance free life of 20,000 hours (equating to 6.6 years
down the country to make scheduled and unscheduled
at typical usage levels in this sector) offers a big advantage.
maintenance trips plus the need to dispose of as many as
10 bulbs incorporating harmful metals and gases during
the lifetime of a projector are all unavoidable factors of the
historic technology. On the other hand a laser-lit model,
like the RZ670, brings environmental impact to a minimum.
The projector is designed to be maintenance free for 20,000
hours use with its original laser light source.
7. Conclusions
Sector professionals such as resellers/dealers and experienced end-users welcome the user-friendly qualities
of Panasonic’s lamp-free projectors:
• 20,000 hours maintenance-free lifetime
• Always ready for use, never in the repair workshop
• Instant ON/OFF capability
• Reduced environmental impact
• Heat sink means cooler and quieter running
• Flexible projection position
ROI team’s evaluation over the second half of 2014 finds clear advantages for the Panasonic RZ670 against the
projectors most purchased by the Museums & Galleries sectors:
Cumulated Light Output 22% greater
• Brighter better projection:
• Environmental stewardship: Carbon emission reduced by 26%
• Lifetime Cost of Ownership: More than 11% lower
Lifetime power comsumption Lifetime cost of ownership
The lifetime comparison between the
If we assume the effective operating
Taking into account all costs
lifetime of a modern projector to be
associated with the purchase and
20,000 hours, then the lifetime power
effective operation of a projector we
consumption is:
see again a clear advantage for the
• Panasonic RZ670
• Conventional projectors
9,621kW Panasonic RZ670 compared with a
12,135kW range of most-purchased lamp-lit
By this measure the Panasonic
RZ670 uses only 79% of the power
consumed by a conventional projector
Lifetime carbon emissions
two projectors types shows:
• Panasonic RZ670
2.18 tonnes
• Conventional projectors 3.78 tonnes
Across its lifetime the Panasonic
RZ670 produces only 74% of the
carbon emissions of a lamp-lit
• Panasonic RZ670
€13,551 projector of equivalent brightness.
• Conventional projectors
of equivalent brightness, whilst
Although the initial purchase price
producing 26% greater Cumulated
may be higher, lifetime freedom
Light Output across its lifetime.
from maintenance and lamp changes
gives the Panasonic RZ670 a Lifetime
Cost of Ownership 11% lower than a
range of conventional projectors of
equivalent brightness.
8. Evaluation of lifetime cost of ownership
and environmental impact
Approach to the project
ROI Team’s brief:
Benchmark the performance/
Market sectors
• Museums and public access
consumption of the Panasonic RZ670
• Higher Education organisations:
series of projectors against a range of
Universities, colleges, training
historic lamp-lit projectors against the
schools etc.
following fields:
• Lifetime Cost of Ownership
• Rental & Staging: performance
and live events
– Financial Cost
• Lifetime Carbon Consumption
– Environmental Impact
Models for comparison: Solid Shine
model: Panasonic RZ670 – 6,500lm
ANSI versus a range of models
identified by resellers and dealers
across Europe as projectors in class
6,000 to 7,000lm most purchased
by the above three verticals.
Projector lifetime
Sources of
performance metrics
i)Resellers/dealers independent
of Panasonic, and actively selling
into the Higher Education and/or
Museums & Galleries sectors. ROI
team survey made initial contact
with 90 from 7 different territories.
Information received from these
sources was averaged.
ii) Manufacturers’ published product
data sheets.
iii)Aggregated Cost Calculator
built for this project by Project
Subject Expert, Dr. Joyce Tsoi with
assistance from Ruby Sehmbi of
ROI team.
Assumed to be 20,000 hours
(equivalent to advertised maintenance-
Research Approach Work undertaken
free lifetime of the Panasonic RZ670).
by project team from ROI team,
Usage pattern
Museums & Galleries:
58 hours/week x 52 weeks =
3,016 hours per year
London, UK (,
Project Director, Andrew McCall,
with expert input from Subject Expert
Dr. Joyce Tsoi.
Research approach and method
adopted was scrutinised and endorsed
in 2012 by UL (
9. Appendices
Anatomy of calculators
Sector: Museums – lifetime cost of ownership calculator
Actual Purchase Price
Operating Power Consumption (kW)
Standby Power Consumption (kW)
Power Consumption Cost
Lifetime Operating
Lifetime Lamp Changes Lifetime Cost
Lamp Replacement Cost
Bulb replacement
Lifetime Cost
of Ownership
Maintenance Cost
Lifetime Maintenance Visits
Lifetime Cost
Cost per Maintenance Visit
Maintenance Visits
Carbon emission calculator
Operating Power Consumption (KW) Standby Power Consumption (KW)
Total Electricity
Carbon Emission
Consumption (KWh)
(tonnes) (electricity
Carbon Conversion Factor
Total Carbon
Maintenance Visits
Fuel Consumption (litres)
(fuel consumption)
Diesel Conversion Factor
Carbon Emission
(fuel consumption)
Profile of ROI team
ROI team is a research consultancy that works to understand clients
objectives, strategies, and challenges, devising and managing programmes
of research to provide the hard evidence to enable well informed strategies
and commercial decisions.
Clients include retailers such as Harrods,
ROI team ( was founded in
Flying Brands, and Best Direct; owners of
2006 by Jo Johnson and Andrew McCall, who
retail property like Capital & Regional plc,
continues as Managing Director of the firm.
Cadogan Estates, and Orion Land; the NHS
and Department of Health and various regional
Dr. Joyce Tsoi is the Subject Expert for
health boards; and media companies such as
this project. Joyce has over 10 years of
Thomson Reuters, community TV operator The
international experience in leading and
Life Channel, and publisher JLD Media.
managing sustainability projects in more
than 15 countries, exploring strategic and
Directors of ROI team have also led projects to
pragmatic lines of progress in the areas of
benchmark performance of key products for
supply chain sustainability on behalf of leading
leading companies such as 3M, JCDecaux, and
international companies and governments. Her
Media Zest plc as well as Panasonic PSCEU.
work has ranged from analysis of product and
organizational life cycle, energy and climate
In 2013 ROI team, in conjunction with counting
change, sustainable water management, to
company PFM Intelligence, launched the UK
reporting on sustainability and communication
Markets Index, the first performance
issues. Throughout her career, Joyce has
index for the UK retail markets sector. ROI team
conducted extensive research on Corporate
is currently developing its second index, the
Social Responsibility and sustainable supply
Retailers’ Revival Index for launch in 2015.
chain management topics, and is a contributor to
Journal of Business Ethics; Journal of Cleaner
ROI team is wholly owned by its founding directors
Production; and contributed a chapter to the
and does not have any financial arrangements
book Corporate Social Responsibility.
or obligations within its fields of operation. Our
aim is to provide sound information, impartially
interpreted,to provide a basis for informed
business decisions.
Andrew McCall
Dr. Joyce Tsoi
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