Safety Guideline for the Projectors
with Laser Device as Light Source<1st Edition>

September 2013

Japan Business Machine and Information System Industries Association
Data Projector GroupNew Light Projector Working GroupTable of ContentsPage
1

Preface1

Scope of application and Object

1

2

Normative references

3

3

Terms and definitions

3

4

Interpretations of the projection light from a projector

6

4.1

In the case of projection of diffused light from laser device as light source

6

4.2

In the case of projection with light source of excitation luminescence by the laser 8

4.3

Assessment responsibility for projection light from the projector

95Classification of laser products

106

Measures to prevent damages due to laser light

12

6.1

Manufacture’s requirements (IEC 60825-1/JIS C 6802)

12

6.2

Measures standards by class for the laser equipment(Ministry of Health, Labor and Welfare)

7

8

Safety guideline for sales

21

7.1

Requirements for labeling and announcement

21

7.2

Announcement in sales

24

Safety guideline in normal use

25

8.1

Requirements for accident avoidance of Intrabeam viewing

25

8.2

Requirements for accident avoidance of intrabeam viewing using opticalequipment25

8.3

Accident avoidance in the case of usually unforeseeable actions

26

8.4

Notes / Consideration / Regard / Attention in the case of remote operation
and use of a remote control

9

10

11

14

26

Safety guideline in disassembly

27

9.1

Requirements for the housing cover

27

9.2

Requirements for the light source cover

27

9.3

Requirements for the light source unit

28

9.4

Requirements in the case of breakage

28

9.5

Requirements for user’s information

28

Safety guideline in the case of failure

30

10.1

Scope of the reasonably foreseeable failure

30

10.2

Emission light from the projection lens

30

10.3

Leaked light

32

10.4

Alert for users

32

Others33

11.1

Requirements in manufacturing

33

11.2

Requirements for servicing information

33

12

11.3

Requirements in the case of disposal

35

11.4

Requirements concerning optional lens

35

Organization table of Draft preparing committee

37

12.1

Members of Data Projector Group

37

12.2

Members of New Light Projector Working Group

38

12.3

Preparation collaborator: Laser Society of Japan

39

Reference40

Foreword
This guideline is set so as to make the requirements explicit for safe use of the projectors with laser
device as light source.

1

Scope of application and Object

This guideline covers the projectors which use laser device as the light source and the fixed
resolution light valves such as LCD (Liquid-Crystal Display) and DMD (Digital Micromirror Device) outof the front projection type projectors, which expand in the images in computers, and sets therequirements for safe use of such devices. This guideline is not applicable to the type of projectors
which project images onto a screen by scanning laser light on the screen. Furthermore, this guideline
is not applicable to the projectors used as toys for children. As for the interepretation of projection
light from a projector, there are several interpretations in terms of laser safety standards; industry
organizations and safety certification bodies are now working on it, accordingly, standards are not yet
clearly described. For this reason, there are two opinions; one opinion is that projection light is to be
seen as a natural light such as general lighting and it is not subject to the safety standard of laser
products, and another opinion is that the projection light is to be seen as a laser light and it is subject
to the safety standards of laser products. Therefore, this guideline does not provide explicit rules
concerning the projection light; based on the view that a laser device is used as
general requirements are to be set considering suchprojector as

light source,

laser products.

The object of this guideline is to make clear the minimum requirements for the laser products
classified by manufacturers according to IEC 60825-1 so as to be able to secure the safety under all
conditions of sales, operation, maintenance, service and failure. These requirements are shown
Section 7 through Section 11.
・Section 7:

Safety guideline for sales

・Section 8:

Safety guideline in normal use

・Section 9:

Safety guideline in disassembly・Section 10 :Safety guideline in the case of failure

・Section 11 :OthersAs to the items regulated by other IEC product safety standards (Example: IT device IEC 60950-1,
audio and video devices IEC 60065 and IEC 62368-1), this guideline comply with these standards.
The MPE (maximum permissible exposure) values were developed for laser radiation and do not
apply to collateral radiation. However, if a concern exists that accessible collateral radiation might behazardous, the laser MPE values may be applied to conservatively evaluate this potential hazard.
In addition, it is the responsibility of the manufacturer to provide correct classification of a laser-1-product, it is to comply with the domestic regulations of each country (Example: Consumer Products
Safety Act, Electrical Appliances and Material Safety Act, etc.).

MPE (maximum permissible exposure: IEC 60825-1:2007 / JIS C 6802:2011)
Level of laser radiation to which, under normal circumstances, persons may be exposed
without suffering adverse effects.

collateral radiation (IEC 60825-1: 2007 / JIS C 6802:2011)
Any electromagnetic radiation, within the wavelength range between 180 nm and 1 mm, except laser
radiation, emitted by a laser product as a result of, or physically necessary for, the operation of a laser

-2-

2

Normative references

The following listed standards compose of a part of the provisions of this guideline by being quoted inthis standard. As for the citation standards without Christian year, the latest version (including
supplement) is applicable.
IEC 60825-1 Safety of laser products - Equipment classification and requirements
JIS C 6802

Safety of laser products

IEC 60065

Audio, video and similar electronic apparatus - Safety requirements

IEC 60950-1 Information technology equipment -safety
IEC 62368-1 Audio/video, information and communication technology equipment–safety requirements(ISO/IEC 21118 Information to be included in specification sheets - Data projectors)(JIS X 6911

Information to be included in specification sheets - Data projectors )(IEC 61947-1 Electronic projection -Measurement and documentation of key performance criteria- Part1:Fixed resolution projectors)(JIS K 6800 Adhesion/Adhesive terms)

3Terms and definitions

As for the main terms and definitions used in this guideline, in addition to the definitions in IEC
60825-1, JIS C 6802, ISO/IEC 21118, JIS X 6911, and IEC 61947-1, the followings are applicable. In
addition, the terms defined in the above described standards and important terms related to thisguideline are to be noted in the text as needed.
3.1
Protective housing
It is a component (usually it is attached by manufacturers) of a laser product (including built-in laser
products) which is designed so as to protect the laser emission exposure which exceeds regulated
AEL to the human body. In this guideline it is a collective term for a housing cover, light source cover,
and optical engine cover.
3.2
Housing cover
It is the protective housing which composes of the utmost outer cover or a case.
3.3
Light source cover
It is a part of the housing cover which is opened or closed when attaching or removing of the lightsource is intended, or access to the light source is intended.
-3-

3.4
Light source unit
In this guideline, it is the light source which is to be incorporated in the system as a projection light ofa projector, or an assembly part composed of light source and its holding components.
3.5
Optical engine
In this guideline, it is a light source unit and the assembly parts which compose of the optical pathwhere the emitted light from the light source is illuminated to the light valve and projected from the
projection lens.
3.6
Optical engine cover
It is the protective housing composes of a part of the optical engine.
3.7
Security seal
It is the seal which is once peeled off, it cannot be stuck again, so that the peeled evidence can befound. Such seals include the “tamper-proof seal” where once peeled, letters appear, “fragile seal”
where the seal tears when one tries to peel it.
3.8
Special screw
It is a screw which can be unscrewed by the tool which is not regularly stocked in the usual home soas to prevent being unscrewed by users.
3.9
Main light beam
It is the light beam which emits to the outgoing direction of the optical engine light path.
3.10
Access sensor
It is an interlock which immediately stop laser oscillation when either cover of the protective housing
is opened.

-4-

Housing cover
きょう体カバー

Figure 3.1
Projection
light
投写光

Light source cover
光源カバー

Light source unit
光源ユニットProtective housing and light source unit of a projector
Leaked漏れ光 light

LeakedProjection
投写光 light

light
漏れ光

漏れ光
Leakedlight

光源ユニット主たる光線
Light source unit
Main light
Figure 3.2

光学エンジンカバー
Optical engine cover

Main light and leaked light, and optical engine cover＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿AEL (accessible emission limit; IEC 60825-1:2007 / JIS C 6802:2011)
The maximum accessible emission permitted within a particular class-5-4Interpretations of the projection light from a projector

4.1

In the case of projection of diffused light from laser device as light source

In the case of the front projector which uses laser device as light source and diffuses the beam andforms it into rectangular beam with uniform intensity and illuminates light valve (liquid crystal panel,
DMD) with it, and then projects the expanded image onto the screen through the projection lens, how
to deal with its projection light is shown below.
4.1.1

Biomedical safety

In the case of general laser pointer, both of the temporal coherence and spatial coherence are kept;
accordingly, when laser light (parallel light) emitted from there is collected with lens, as shown in
Figure 4.1.1 (a), all emitted light energy is collected on to micro area of the wave length, and very
high energy density is kept at the focal point. For this reason, when laser light (parallel light) goes
into human eye, its retina may be damaged by the collected light.
On the other hand, in the case of the front

projector

that illuminates light valve with diffused laser

light and projects it onto the screen, temporal coherence, in some cases, may be kept while spatial
coherence is lost; accordingly, in the case where the projection light (diffused light) emitted fromthere is collected through the lens, as shown in the Figure 4.1.1 (b), only a part of emitted lightenergy is collected on to finite area of uniform illumination intensity, so that the energy density at the
focal point is not so large. For this reason, even in the case where the projection light (diffused light)
goes into the human eye, the risk to damage the retina by the collected light is considered to be low.
That is to say, light collection ability through the light projection lens of the projector with laser device
as light source is almost same the light collection ability through the light projection lens of the
projector with natural light (incoherent light) such as a lamp and LED. ※※In the case of the highly monochromatic light, that is, the light spectrum of very narrow band width (equal totemporal coherent light), there are opinion that the threshold level of damage is different from that of othernatural light (incoherent light); however, at present, it is not clearly specified that what kind of impact it has on thehuman body when the light spectrum of very narrow band width becomes in specific.

Accordingly, in the case of the projection light of the front projector that illuminates light valve withdiffused laser light and projects it onto the screen, it is not particularly hazardous because it uses
laser device as light source; in terms of biomedical, it is considered that it can be handled like otherlight sources (lamp, LED).
However, regardless of types of light (sunlight, lamp light, LED light, laser light), when one continues
to stare at strong light, it is likely to damage one’s eyes; so equally cautions are necessary.

-6-

(a)

(b)

Figure 4.1.1

Light-collection difference between a laser pointer and projector with laser
device as light source

Spatial coherence
It is the amount to indicate the degree of light wave coherency at different points. It is expressed by the
degree of correlation at different points of the same spot. (JIS Z 8120:2001 Definition of optical terms)
It is the scale to measure uniformity of light wave front. Because laser light has high spatial coherence, it
is able to make almost complete plane wave and spherical wave. For this reason, laser light is able topropagate long distance without diffusion, and is able to converge on a very small spot as well.
[Characteristic features that beam go straight without diffusion.].
Temporal coherence
It is the amount to indicate the degree of light wave coherency at different time points. It is expressed by
the degree of correlation at different time points of the same spot.
(JIS Z 8120:2001 Definition of optical terms)
It is the scale to represent how long the frequency at the optical electric-field is kept. Because, laser lighthas high temporal coherence, even though in the case where large optical path difference is given, a clear
interference pattern can be obtained. The maximum optical path difference to form an interference patternis called as “coherence length”; higher the temporal coherence, larger the coherence length. [Spectrum isnarrow = High monochromic characteristics]-7-4.1.2

Interpretation concerning standards

In the case of the front projector that illuminates light valve with diffused laser light and projects it onto
the screen, there are several interpretations concerning handling of the laser safety standards (IEC60825-1/JIS C 6082) for the projection light; consequently, industry organizations and safety
certification bodies are now working on it.
At present, as to the projection light of the projector that illuminates light valve with diffused laser lightand projects it onto the screen, according to one interpretation, it is treated as a natural light(incoherent light) same as general lighting and it is not subject to the class determination; whileaccording to another interpretation, it is treated as a laser light and it is subject to the classdetermination, thus two camps have different judgments. The former interpretation treats such a
projector as a Class 1 laser product. The latter interpretation treats such a projector as a laser
product of specified Class corresponding to the strength of projection light. ※※In either case, it is prerequisite for the interpretation that there is no laser light leak which
exceeds Class 1 from the place other than the projection lens.

In addition, in one case, the “coherent light” generated by the stimulated emission is seen andtreated as laser light; while in another case, all light generated by the stimulated emission is seen
and treated as laser light. In this case as well, as to the definition of the “coherent” light, one
interpretation treats it as coherent light as long as either spatial coherence or temporal coherence
remains; while, another interpretation treats it as incoherent light when either spatial coherence or
temporal coherence is lost.
4.2

In the case of projection with light source of excitation luminescence by the laser

In the case of projection with light source of excitation luminescence by the laser and forms it into
rectangular beam with uniform intensity and illuminates light valve (liquid crystal panel, DMD) with it,
and then projects expanded image onto the screen through the projection lens, how to treat the
projection light is shown below.
4.2.1

Biomedical safety

In the case of luminescence (collateral radiation) excited by laser light, because both the spatial
coherence and temporal coherence are lost, generally it is considered as a natural light (incoherent
light). For this reason, when projection light goes into eye, it is considered that the risk to damage theretina by collected light through the lens is low as those of other light sources (lamp light, LED light).
However, regardless of types of light (sunlight, lamp light, LED light, luminescence), when one
continues to stare at strong light, it is likely to damage one’s eyes; so equally cautions are necessary.

-8-4.2.2

Interpretation of the standards

In the case of the front projector which projects onto a screen by irradiating luminescence (collateralradiation) excited by laser light to the light valve, there is no clear reference standard as to how todeal with such a projection light in terms of standards.
Therefore, one interpretation sees luminescence excited by the laser as a natural light (incoherent
light) and applies the safety standards (IEC 62471/TS C 0038) for lamp light and LED light, while
another interpretation applies laser safety standards (IEC 60825-1/JIS C 6802) to it, although thiscamp over stresses the safety side.
4.3

Assessment responsibility for projection light from projector

As to the interpretation of the projection light in the case of projecting diffused laser light onto thescreen and in the case of projecting excited luminescence by the laser, they are explained in above
4.1 and 4.2.
Accordingly, at present, handling determination of these projections light is left to manufacturers or its
agents. (IEC 60825-1: 2007 Section 8.2)

-9-

5

Classification of laser products

Laser products are classified corresponding to the degree of hazard; they are classified into 7
general classes ranging from class 1 which is safe laser to the most hazardous class 4. Classificationof projectors is carried out by manufacturers or its agents according to Section 8 and Section 9 in
IEC 60825-1.
(1) Class 1
Laser products that are safe during use, including long-term direct intrabeam viewing, even when
exposure occurs while using optical viewing instruments (eye loupes or binoculars). Class 1 also
includes high power lasers that are fully enclosed so that no potentially hazardous radiation isaccessible during use (embedded laser product). Intrabeam viewing of Class 1 laser products whichemit visible radiant energy may still produce dazzling visual effects, particularly in low ambient light.
Remark: Even though a high power laser is built into a product, if it is structurally designed so
as to be unable to exposure its laser light, it is classified into Class 1.

(2) Class 1M
Laser products that are safe, including long-term direct intrabeam viewing for the naked eye (unaidedeye). The MPE can be exceeded and eye injury may occur following exposure with one of the twocategories of optical viewing instruments (eye loupes or binoculars).
The wavelength region for Class 1M lasers is restricted to the spectral region where most glass
optical materials used in optical instruments can significantly transmit, i.e., between 302,5 nm and4000 nm. Intrabeam viewing of Class 1M laser products which emit visible radiant energy may still
produce dazzling visual effects, particularly in low ambient light.

Remark: This is a new class in that “it is safe for the naked eye.” Exposure (watching)condition is that the watching by the naked eye at the distance of 100mm from thelight source. Accordingly, in this class observation with lens system may damage eye.

(3) Class 2
Laser products that emit visible radiation in the wavelength range from 400nm to 700nm that are safe
for momentary exposures but can be hazardous for deliberate staring into the beam. The time baseof 0.25 s is inherent in the definition of the class and presumption is that there is very low risk of
injury for momentary exposures that are somewhat longer.
The following factors contribute to precluding injury under reasonably foreseeable conditions;・unintentional exposures would rarely reflect worst-case conditions, for example, of beam alignment
with the pupil for a stabilized head, worst case accommodation;・the inherent safety margin in the MPE upon which the AEL is based;- 10 -

・natural aversion behavior for exposure to bright light.

Remark: The upper power limit is 1 mW (in the case where light source visual angle is lessthan 1.5mrad), where the risk is avoided by the feeling of repulsion reaction (≦0.25
second). The range of visible light defined here is narrower than the actual visible
range; it is confined the wavelength range from 400 nm to 700 nm where the feelingof repulsion reaction occurs at 1 mW.

(4) Class 2M
Laser products that emit visible laser beams and are safe for short time exposure only for the naked(unaided eye). Eye injury may occur following exposure with one of the two categories of opticalviewing instruments (eye loupes or binoculars).
Remark: It is a new class like class 1M in that it is safe for the naked eye. Accordingly, theobservation with the optical system may damage eye.

(5) Class 3R
Laser products that emit radiation that can exceed the MPE under direct intrabeam viewing, but therisk of injury in most cases is relatively low because the AEL for Class 3R is only 5 times the AEL ofClass 2 (visible laser beams) or the AEL of Class 1(for non-visible laser beams). The risk of injury
increases with exposure duration and exposure is hazardous for deliberate ocular exposure.
Because of the lower risk, fewer manufacturing requirements and control measures for the user
apply than for Class 3B.
(6) Class 3B
Laser products that are normally hazardous when intrabeam ocular exposure occurs (i.e. within theNOHD) including accidental short time exposure. Viewing diffuse reflections is normally safe. Class
3B lasers which approach the AEL for Class 3B may produce minor skin injuries or even pose a riskof igniting flammable materials. However, this is only likely if the beam has a small diameter or is
focused.
Remark: Fitting of key or interlock is required for this class and upper class; in-use alarm
notice, etc., are required.

(7) Class 4
Lasers products for which intrabeam viewing and skin exposure is hazardous and for which theviewing of diffuse reflections may be hazardous. These lasers also often represent a fire hazard.
Remark: It is necessary to take a measure to block the laser light emitted. Naturally, fitting of
key or interlock is required; in-use alarm notice, etc., are required.

- 11 -

6

Measures to prevent damages due to laser light

6.1

Manufacture’s requirements (IEC 60825-1/ JIS C 6802)

International standards IEC 60825-1 concerning laser products safety and Japanese standards JIS C
6802 require manufacturers to take measures listed in Table 6.1.1 in order to prevent damages due
to laser light.
Table 6.1.1
Requirement
subclass

Summary of manufacture’s requirements
Classification

Class 1

Class 1M

Class 2

Class 2M

Description of
hazard class

Safe underreasonably
foreseeableconditions

As forClass 1
exceptmay behazardous
if user
employs
opticsLow
power;
eye
protection
normally
affordedbyaversion
responses

As forClass 2
exceptmay bemore
hazardous
if user
employs
opticsProtective
housing

Requiredfora built-in
laser
product

Required for each laser product; limits access necessary for performance offunctions of the products

Safetyinterlock inprotective
housing

Designed to prevent removal of the panel until
accessible emission values are below that for Class
3R

RemoteInterlock

ManualReset

Key control

Class 3R

Directintra-beamviewing
may behazardousClass 3B

Class 4

Directintra-beamviewing
normally
hazardousHighpower;
diffusereflections
may behazardous

Designed to prevent removal of thepanel until accessible emission
values are below that for Class 3B or
3R for some products

Permits easy addition of
external interlock inlaser installation

Not required

Not required

Requiresmanualreset if
powerinterruptedor
remoteinterlock is
actuated

Laser inoperative when
key is removed

Not required- 12 -

Emission
warningdeviceGives audible or visible warning whenlaser is switched on or if capacitor
bank of pulsed laser is being
charged. For Class 3R, only applies if
invisible radiation is emitted

Not required

Attenuator

Gives
means
to
temporarily block beam

Not required

Locationcontrols

Controls so located that there is nodanger of exposure to AEL above
Classes 1 or 2 when adjustments are
madeNot required

Viewing
optics

Not required

Emission from all viewing systems must be below Class 1M
AEL

Class label

Required wording

Figure 1 and Figure 2 and required wording in the IEC60825-1

Aperturelabel
Service
access label

Not requiredNot
requiredSpecified wording required

Required as appropriate to the class of accessible radiation

Overrideinterlock label

Required under certain conditions as appropriate to the class of laser used

Wavelength
range label

Required for certain wavelength ranges

User
information

Operation manuals must contain instructions for safe use. Additional requirements apply forClass 1M and Class 2M

Purchasing
and service
information

Promotion brochures must specify product classification; servicing manuals must containsafety information

Note 2) The related part is extracted from Annex F: Table F.2 in the IEC 60825-1
Note 3) As to details of each item, see the Section 4 “Engineering specifications” in the IEC 60825-1.

- 13 -

6.2

Measures standards by class for the laser equipment(Ministry of Health, Labor and Welfare)

Meanwhile, in Japan, “Prevention measures plan concerning laser hazard” (Notification No.
39/Notification No. 0325002 (revision) was prepared by the Health, Labor and Welfare Ministry inorder to prevent damage from workers who engage in business to handle laser equipment.
Tables 6.2.1 through 6.2.3 are the summary of the measures by laser equipment class required forbusiness operators according to above plan. Business operators are required to take measures
based on “List of measures standards by laser equipment class” shown below. These are applied inorder to secure workers’ safety, who engage in the projector manufacturing and its service
Remark: Business operators
Those who operate business and employ workers. (From Article 2 in the Industrial
Safety and Health Act)

Table 6.2.1

List of measures standards by laser equipment class (Part 1)
Laser equipment class

Item

1

1M

2

2M

Description of measures

3R
VisibleAppointment of the person in charge oflaser equipment

Invisible○

Controlled area (sign, off-limits)

Laser
equipment

Laser lightpath

Position ofa laser light
path

3B

○

○

○

○

- 14 -○○

4○◆ The person in charge of thelaser equipment should be
appointed from those whohave enough knowledge andexperiences concerning
handling of laser equipment
and prevention of damage
due to the laser light.
◆

Laser controlled area shouldbe partitioned from otherareas by fence, etc., andshould be clearly specified bysigns, etc.

◆

Only authorized persons areallowed to enter the laser
controlled
area,
and
measures such as auto-lock,etc., should be taken at theentrance as needed.

◆

Personsother
thanauthorized persons need toenter the laser control area;
they should be act under
supervision of the person in
chargeofthelaser
equipment.

○○◆ The laser light path should be
set avoiding the eye level ofworkers.

Appropriate
design andshielding of
the light
path

Appropriate
terminal

○

○※

○

2

Key control

Emergency
stop switch

○

○

○

○

○

○

○

◆ The laser light path should
whereverpossiblehaveminimum distance and kinks,
and should not cross the
walkway and other pathways,
and should be shielded.
a. Around the place to install thelaser equipment, the fence toshield the laser beam should
be set up.
b. The fence should be opaque,absorbable,
andnonflammable against laser
light.
c. Inside of the fence should be
assigned as a controlled
area.
◆

The terminal of the laser lightpath should be diffuse
reflective material or diffuse
absorption materials.

◆

Laser equipment structure
should be designed as to be
operated by a key, etc.

◆

The emergency stop switch
which is able to immediately
stop the laser light emission
should be installed on control
panel and other necessary
places.
Alarm equipment such as
automatic
indicator
lightwhich is able to indicate thelaser light is under emission
or ready to emit should beinstalled.
At the emission hole of thelaser light of the laser
equipment, a shutter should
be installed in order toprevent
unintentionalemission of the laser light.
In the case of opening of thefence of the laser control
area, or in the case of releaseof shielding of the laser light
path, measures such as
interlock functions should betaken to prevent laser lightemission.
At the emission hole, such
indication should be placed.

○◆
Emergencystopswitch, etc.

Alarm
equipment

○

○

○

◆
Shutter○○◆Interlock system, etc.

Indication of emission
hole

○

○

○

○

○

○

◆

The symbol “○” means actions are required.
※1 Visible light is the light of 400nm through 700nm wavelength, and invisible light is the light of wavelength otherthan such wavelength.
※2 As for the laser equipment listed in the JIS 10.6, the laser light terminal treatment is required.

- 15 -

Table 6.2.2

List of measures standards by laser equipment class (Part 2)
Laser equipment class
1

Item

2

1M
2M

3R
VisibleInvisible

3B

Work management/Health management

Operating position

Measures while adjustmentof the optical systems

Description of measures

4◆

Operation of laser equipment
should be carried out at theposition as far as possible fromthe laser light.

◆

When adjustment of the opticalsystem is carried out by thelaser light, the adjustment
should be carried out with theminimum power output of thelaser light◆

Effective eyeglasses should beworn by workers depending on
the class of laser. However, inthe case measures to prevent
damage from eye are taken, it
is not applicable. (Note:
protective eye glasses for laser
should be used.)◆

Working clothes with less skin
exposure and of nonflammablematerials should be worn byworkers. In particular, chemical
fiber clothes which become a
ball
when
meltedisundesirable.

○

○

○

Protective
eyeglasses
Working
clothes withless skin
exposure

○

○

○

○

○

○

○

○

Protective
equipment
Use of flame
resistancematerials○- 16 -

◆

Before starting work, let theperson in charge of the laser
equipment check the laser
opticalpath,interlockfunctions,
etc.,
and
the
protective equipment.

◆

Within the specified period, let
the person who has expertisein the laser equipment checkthe laser equipment focusing
on the following items and fix
it.

a.

Presence or absence ofabnormality of the output of thelaser light, mode, beam
diameter,spreadangle,
oscillating wavelength.
Presence or absence ofabnormality of the input power,
exciting
voltage,current,
insulation, grounding, etc.
Presence or absence ofabnormality of the actuation ofthesafetyequipment,
automatic
indicator
lamp,
shutter, interlock functions, etc.
Presence or absence ofabnormality of the power
meter, power monitor, etc.
Presence or absence ofabnormality of the movableparts of the fan, shutter, etc.
Presence or absence ofabnormality of the coolingequipment,
gas
supplyequipment, hazardous gas
removalequipment,
dust
removable equipment, etc.

b.

c.

Checkout/Maintenance

○

○

○

○

○

d.
e.
f.

- 17 -

◆In the case where workers who
engage in the laser work are
newly employed, or change of
the workers’ work and let themengage in such work, or in thecase of change of laser
equipment
in
use,
the
education according to Section
1 or Section 2 in Article 59 in
the Industrial Safety and
Health Act should be carriedout. In this case, particularly
keep in mind the following
items are to be included.

[Contents of the safety and healtheducation]

Safety and health education

○

○

○

○

○

a. Behavior, risk
and hazardousness of the laserb.

The principle and structure of
the laser equipmentc. Handling methods of the laser
equipment
d. Functions and handling
methods of the safety
equipment and protective
equipment

Anterior eye
check(cornea,crystalline
lens)

○

○

○

Healthmanagement
Fundusexamination○e.

Actions and evacuation in caseof emergency◆

As to workers who usuallyengage in the laser work, inthe case where they are newly
employed or change of the job,in addition to eyesight check,anterioreye(cornea,crystalline lens) examinationandfundusexamination
should be carried out.

The symbol “○” means actions are required.
※ Visible light is the light of 400nm through 700nm wavelength range, and invisible light is the light of wavelength
other than such wavelength range.

- 18 -

Table 6.2.3

List of measures standards by laser equipment class (Part 3)
Laser equipment class
1

Item

2

1M
2M

3R
VisibleThe person in
charge of thelaserequipment

NoticeRisk
Hazardousness
Items to handle
with care○○

Invisible

○

○

○

○

○

Others○○◆ The following items shouldbenoticedattheeasy-to-see place such as
the entrance of the laser
controlled area.
a. Name of the person in
charge of thelaser equipmentb. Risk, hazardousness of thelaser light, and precautionsin handling the laser
equipmentc. Notice of thelaser equipment installation

○

○

○

No carry-in hazardous
materials○○

Measures for poisonous
gas, dust, etc.

Doctor’s diagnosis andtreatment for persons who
suspected to have healthdamage due to the laser
beam.

Description of measures

4○

Notice of thelaserequipment
installation

Notice of the high-voltage
part of the laser equipment

3B

○

○

○

- 19 -○○◆At the high-voltage parts of
the laser equipment, suchshould be noticed, andmeasures to prevent electric
shock by touching suchparts should be taken as
well.

◆

Explosive
materials,
flammable materials, etc.,
should not be carried in thelaser controlled area.

◆

In the case of laser
operation, when poisonous
gas,
dust,
etc.,
are
generated, in order toprevent the health damages
due to such materials,
measures such as seal-up
facilities, local ventilationequipment, gas mask, and
dust
mask
which
are
prescribed by the Industrial
Safety and Health Act
should be taken.

◆

Let get doctor’s diagnosis ortreatment for persons who
suspected to have damage
due to the laser beam assoon as possible.

○

○

○

○

The symbol “○” means actions are required.
※

Visible light is the light of 400nm through 700nm wavelength range, and invisible light is the light of wavelength
range other than such wavelength range.

Note 4) This “Measures standards by laser equipment class” is based on the Health, Labor and Welfare
Ministry’s Notification No. 0325002 (March 25, 2005) “Damage prevention measures due to the laserbeam” and its exhibit “The outline of the damage prevention measures due to the laser beam”; here thelaser products of class 1 and class 2 are not included in the scope of application.

Note 5) In the case of revision of the Health, Labor and Welfare Ministry’s “The outline of the damage prevention
measures due to the laser beam” which is the source of quotation, the latest ruling is applicable.

Access panel (IEC 60825-1:2007 / JIS C 6802:2011)
It is a part of the protective housing, and when removed or transferred, it would expose someone by thelaser emission
Safety interlock (IEC 60825-1:2007 / JIS C 6802:2011)
It is the automatic interlock which interlocked with each part of the protective housing in order to prevent
human body laser from emission exposure by Class 3R, Class 3B, or Class 4 laser emission when a partof protective housing of the laser product, is removed, opened, or transferred.
Remote interlock connector (IEC 60825-1: 2007 / JIS C 6802:2011)
It is a part of the laser product which connect to the external control equipment which is installed apartfrom other parts.

- 20 -

7

Safety guideline for sales

7.1

Requirements for labeling and announcement

7.1.1

Labeling on the projector (Requirements of IEC 68025-1)

Labeling on the projector should comply with the directions for labels shown in Section 5 in IEC
60825-1. Durable labels should be stuck, or they can be directly printed or die stamped on the
projector.
・Requirements for labeling(1)

Alarm label

The symbol, outline, color, and size of the alarm label should comply with the Figure 1 in IEC
60825-1. These dimensions are recommended values. As long as they are proportional to the values,
the symbol and border may be of any legible size as required to suit the size of the projector.
(2)

Explanatory label

The symbol, outline, color, and size of the explanatory label should comply with the Figure 2 inIEC 60825-1. These dimensions are recommended values. The label may be of any size necessary
to contain the required lettering and border.
(3)

Aperture label

Each Class 3R, Class 3B and Class 4 laser product shall have affixed a label close to each aperture
through which laser radiation in excess of the AEL for Class 1 or Class 2 is emitted. The label(s) shallbear the words listed in Table 7.1.1 with arbitrary legible character size.

Table 7.1.1
Product
class

Alarm label

Class 1
Unnecessary
Class 1M

Class 2

Necessary

Requirement for Labeling and the words

Explanatory label

Aperture label

CLASS 1 LASER PRODUCT ※Unnecessary

LASER RADIATIONDO NOT VIEW DIRECTLY WITH OPTICAL INSTRUMENTS
CLASS 1M LASER PRODUCT※LASER RADIATIONDO NOT STARE INTO BEAM
CLASS 2 LASER PRODUCT- 21 -

Class 2M

LASER RADIATIONDO NOT STARE INTO THE BEAM OR VIEW
DIRECTLY WITH OPTICAL INSTRUMENTS
CLASS 2M LASER PRODUCTClass 3R

LASER RADIATIONAVOID DIRECT EYE EXPOSURE
CLASS 3R LASER PRODUCTClass 3B

LASER RADIATIONAVOID EXPOSURE TO BEAM
CLASS 3B LASER PRODUCTClass 4LASER RADIATIONAVOID EYE OR SKIN EXPOSURE TO
DIRECT OR SCATTERED RADIATION
CLASS 4 LASER PRODUCT※LASER APERTUREor
APERTURE FOR
LASER RADIATIONorAVOID EXPOSURE－LASERRADIATION IS
EMITTED FROMTHIS APERTURE

Instead of the above labels, at the discretion of the manufacturer, the same statements may be included in theinformation for the user.

Note: 6) Quoted from Table 1.5.1 of Section 5 in the “Laser safety guidebook 4th edition” (Optoelectronic Industry andTechnology Development Association)(However, a part of the contents are revised in accordance with the latest standards (ITC 60825-1 (2007).)(4)

Labels for panels

According to the standards (IEC 60825-1), the panel which, when removed or displaced permits
human access to laser radiation in excess of the AEL for Class 1, shall have affixed labels bearing
the words shown in Table 7.1.2. (IEC 60825-1, Section 5.9) is written down.
Remark: Depending on presence or absence of the safety interlock on the panel, contents ofphrase to write down are different (See Table 7.1.2 below).

The term panel (access panel) used here means a movable part which is incorporated in user’s work
procedures (action to open the panel) in order to fulfill functions necessary for the laser product. As
for projector, the light source cover is equivalent to such access panel, and corresponds to theservice panel in the case where users are allowed to replace the light source unit at the discretion of
manufacturers.

- 22 -

Table 7.1.2

The wording of labels for access panels

Laser classprotected by
the accesspanel

The panel without safety interlock, or the panel
with a safety interlock which cannot be easily
unlocked ※1

The panel with a safety interlock which can beeasily unlocked

Class 1

Unnecessary

Unnecessary

Class 1M

CAUTION－
CLASS 1M LASER RADIATION WHEN OPEN
DO NOT VIEW DIRECTLY WITH OPTICALINSTRUMENTS

Class 2

CAUTION－
CLASS 2 LASER RADIATION WHEN OPEN
DO NOT STARE INTO THE BEAMClass 2M

CAUTION－
CLASS 2M LASER RADIATION WHEN OPEN
DO NOT STARE INTO THE BEAM OR VIEW
DIRECTLY WITH OPTICAL INSTRUMENTS

Class 3R

CAUTION－
CLASS 3R LASER RADIATION WHEN OPEN
AVOID DIRECT EYE EXPOSURE

Class 3B

Class 4

Safety interlock is indispensable ※2

Safety interlock is indispensable ※2

CAUTION－
CLASS 1M LASER RADIATION WHEN OPEN
AND INTERLOCKS DEFEATEDDO NOT VIEW DIRECTLY WITH OPTICALINSTRUMENTS
CAUTION－
CLASS 2 LASER RADIATION WHEN OPEN
AND INTERLOCKS DEFEATEDDO NOT STARE INTO THE BEAM
CAUTION－
CLASS 2M LASER RADIATION WHEN OPEN
AND INTERLOCKS DEFEATEDDO NOT STARE INTO THE BEAM OR VIEW
DIRECTLY WITH OPTICAL INSTRUMENTS
CAUTION－
CLASS 3R LASER RADIATION WHEN OPEN
AND INTERLOCKS DEFEATED
AVOID DIRECT EYE EXPOSURE
CAUTION－
CLASS 3B LASER RADIATION WHEN OPEN
AND INTERLOCKS DEFEATED
AVOID EXPOSURE TO THE BEAM
CAUTION－
CLASS 4 LASER RADIATION WHEN OPEN
AND INTERLOCKS DEFEATED
AVOID EYE OR SKIN EXPOSURE TO
DIRECT OR SCATTERED RADIATION※1 Even if one open the panel with a safety interlock which cannot be easily unlocked, in the case where the humanbody is not exposed to the laser radiation which exceeds of the AEL for Class1 due to the action of the safety
interlock, labeling is not required.
※2 When the panel is removed or displaced, the human body is exposed to the laser radiation of AEL for Class 3B or
more, the safety interlock is indispensable.
thNote: 7) Quoted from Table 1.5.2 of Section 5 in the “Laser safety guidebook 4 edition” (Optoelectronic Industry andTechnology Development Association).
(However, a part of its contents are revised in accordance with the latest standards (IEC 60825-1 (2007).)- 23 -

7.1.2Items to be indicated on the outer packaging box and in the operation manual(original requirements for this guideline)(a)Requirments for outer packaging box

The indication which shows a laser product shall be affixed.
(b)Requirments for operation manual(1)

Note of caution such as “Don’t stare into the projection lens of the projector” is to be written
down.

(2)

Note of caution such as “CLASS xx LASER PRODUCT” is to be written down.

(3)

Particularly, as for the projector which exceeds Class 2, a note of caution such as “In the casewhere children are likely to touch it, it should be used under the control and supervision of an
adult.”
Remark: As to the requirements in the note of caution, it is desirable to use thestandardized phrase among manufacturers.

(4)

Legible reproductions (colour optional) of all required labels and hazard warnings to be affixed
to the laser product or provided with the laser product. The corresponding position of each label
affixed to the product shall be indicated or, if provided with the product, a statement that suchlabels could not be affixed to the product but were supplied with the product and a statement of
the form and manner in which they were supplied shall be provided.

7.2

Announcement in sales

In all catalogues, specification sheets and descriptive brochures, the warning that it is the laser
product should be stated so as to buyers are able to recognize the fact that it uses a new light source
different from the conventional lamp.
Furthermore, according to Section 6.2 in IEC 60825-1, in all catalogues, specification sheets anddescriptive brochures, manufacturers of laser products shall provide or cause to be provided theinformation concerning the classification of each laser product and the following alarm notedepending on each laser class.
[Laser product][Information concerning warning]

Class 1

Not particularClass 1M

Do not View directly with optical instruments

Class 2

Do not stare into the beam

Class 2M

Do not stare into the beam or view directly with optical instruments- 24 -

8
8.1

Class 3R

Avoid direct eye exposure

Class 3B

Avoid exposure to the beam

Class 4

Avoid eye or skin exposure to direct or scattered radiation

Safety guideline in normal use
Requirements for accident avoidance of Intrabeam viewing

In the case of the projector, regardless of the types of the light source (lamp, LED, laser, etc.) andrisk class (risk group, laser class, etc.), it is (potentially) likely to have negative impact on the humanbody to directly watch strong light projected from the projection lens onto screen from inside thebeam for long time, so the following notes of caution should be provided.
(a)Requirements for projector

In the case of the projector which uses laser as light source, same as the case of the lamp-type
projector, the no stare into mark is to be indicated nearby the light emission hole and users’
awareness is to be promoted. This no star into mark is to be used according to the write-down in themark of the lamp-type projector.
Furthermore, as for the projector of Class 3R or more, in addition to above no stare into mark, at thesame place (light emission hole), opening label (described in Table 6.1.1 in this guideline) is required.

Figure 8.1.1(b)Example of no stare into markRequirements for operation manual

Note of caution such as “Don’t stare into the projection lens.” should be written down.
Remark: The description in Section 7.1.2 in this guideline may be combined, also a
supplementary note of caution may be written down.

8.2

Requirements for accident avoidance of intrabeam viewing using optical equipment

In the case of the projector, regardless of the types of the light source (lamp, LED, laser, etc.) andrisk class (risk group, laser class, etc.), it is likely to have negative impact on the human body to look
into strong light projected from the projection lens onto screen from inside the beam using opticalequipment (loupe, mirror reflector, etc.), so the following note of caution should be provided.

- 25 -

・Requirements for operation manualNotes of caution such as “Don’t enter into the beam by using optical equipment (loupe, mirror
reflector, etc.)” is to be written down.
8.3

Accident avoidance in the case of usually unforeseeable actions

In the case of use by children, it is hard to completely eliminate the possibility that the accident may
be caused by the handling of the projector other than usually reasonably foreseeable handling
method, so the following note of caution is to be provided.
・Requirements for operation manual
In the case of the projectors which exceed Class 2 or more, a note of caution such as “When it islikely to be touched by children, this should be used under the control and supervision by the adult.”
should be written down.
Remark: The description in Section 7.1.2 in this guideline may be combined, also a
supplementary note of caution may be written down.

8.4

Notes / Consideration / Regard / Attention in the case of remote operation and use ofa remote control

In the case of power-on, consideration has to be made to prevent the projection lens being looked in.
・Requirements for operation manual
A note of caution such as “When turn on the projector, consideration has to be made to prevent the
projection lens being looked in.” should be written down.

- 26 -

9

Safety guideline in disassembly

In the case of disassembly of the product, it is ideal to prevent misuse of the laser device as lightsource by its destruction; however, in the case where it is difficult to do so in terms of service activity,
in terms of prevention of misuse of the removed laser device as light source and ensuring safety forthe maintenance, set up the following requirements in order to prevent the laser device as lightsource in the product easily being diverted.
9.1

Requirements for the housing cover(a)

In the operation manual, alert users not to disassemble.

(b)

Housing cover structure should be designed so as not to be easily opened by users.
Remark: For example,
1) Use the special screws for tightening of housing cover.
2) Housing cover is designed as can’t be removed by one-action3) Housing cover is designed as to be a structure and combined with screw
tightening
Entrust specific countermeasures to manufacturers(c)On the housing cover, placing the indication that represents “Don’t open / disassemble thehousing cover.”

9.2
9.2.1

Requirements for the light source coverIn the case where users are not permitted to replace the light source unit

The requirements similar to those for the housing cover described in Section 9.1 in this guideline are
to be applied to the light source cover.
Remark: In the case where due to the size or design of the product, placing the indicationthat represents “Don’t open/disassemble” to both the housing cover and light source
cover is impractical, the indication that represents “Don’t open/disassemble set.”should be placed on either the housing cover or the light source cover. In this case,
it is desirable to seal the cover without the notice with security seal, etc.

9.2.2
(a)

In the case where users are permitted to replace the light source unit
Depending on the class, the label for the access panel by class listed in Table 6.1.2 in thisguideline should be placed on the light source cover.

(b)

As for the fixing means of the light source cover, the structure where users are able to open it
easily is acceptable; however, in the case of opening the light source cover, it is to be designed- 27 -

so as not to turn on the light source.
9.3

Requirements for the light source unit

In order to prevent the diversion of laser devices, its structure is to be designed so as the laser noteasily to be removed from the light source unit.
Remark: These are applicable to the structure where the light source unit is removable fromthe projector.
For example,
1) Use the special screws for fixing the laser.
2) Use the security seal on the head of the special screws.
3) By applying an anaerobic adhesive to the screw for fixing the laser, the screw isbroken in disassembling.
Entrust specific countermeasures to manufacturers.

9.4

Requirements in the case of breakage

In the case of housing breakage due to falling, etc., the structure is to be designed for the main lightso as not to emit outside directly.
Remark: For example, to adopt double light shielding structure by the optical engine coverand housing cover
Entrust specific countermeasures to manufacturers.

9.5

Requirements for user’s information

Alert users to the fact that the projector should not be disassembled, repaired, and reconstructedwithout careful consideration.
(a)Describe in the operation manual that if the user disassemble, repair or modify the unit there isa serious problem about the safety of the user.

(b)

Design to identify easily that the unit is disassembled by the user
Remark: Prepare as a psychological alert for the easy disassembly by the user.
For example,
1) Seal the security seal to the eye-catching place by appearance.
2) By applying an anaerobic adhesive to the screw, the screw should be broken
when disassembling,
Entrust specific countermeasures to manufacturers.

- 28 -

Anaerobic adhesive (JIS K 6800: 1985 Adhesive and adhesive terms)
The adhesive that hardening is inhibited by the existence of oxygen, and when oxygen is blocked out, it
becomes hardened.

- 29 -

10
10.1

Safety guideline in the case of failure
Scope of the reasonably foreseeable failure

According to Section 9 in IEC 60825-1, the tests during operation to determine the classification of
the product shall be made “under each and every reasonably foreseeable single-fault condition.”
Example of the reasonably foreseeable single-fault condition
・Breakage of the outer housing due to falling of the product.
・Breakage of the inner parts due to falling of the product.
・Failure of the drive circuit of the laser device as light source.
・Breakage of the diffuser of the laser light.
・Aged deterioration of the inner parts such as an optical element.
・Failure of the safety interlock.
10.2

Emission light from the projection lens

In the case of failure, the laser light emitted from the projection lens should not exceed the upper limitof the appropriate class. Particularly, in the failure mode where the degree of hazard is extremely
high, the measures to control the emission of the projection light to outside must be taken
immediately.
In addition, it is desirable that this protective mechanism is not automatically reset as long as user orthe service person carries out a specific operation.
Remark: For example, in the case of the failure mode such as excursion laser output or
breakage of the laser light diffuser,
1) Stop the power supply to the laser drive circuit and stop the laser light oscillation.
2) Block the laser light by using a mechanical shutter of light resistance/heatresistance.
Entrust specific countermeasures to manufacturers.

10.3

Leaked light

In the case of normal use or failure, the laser light leak from the place other than projection lensshould not exceed the Class 1 AEL.
Around the optical path of the main light, the protective housing is to be installed in order to preventthe leak of the laser light which exceeds the Class 1 AEL; durability of such protective housing isrequired to secure the safety under the reasonably foreseeable single-fault condition (Section 10.1 inthis guideline).

- 30 -

Remark: Entrust specific countermeasures for the material of protective housing to
manufacturers.

As for the projector, the openings for intake air/exhaust air which are installed for cooling may
problematic sometimes; accordingly, it has to be designed for laser light which exceed Class 1 AEL
so as not to leak outside.
Remark: For example,
1) To employ the double structure protective housing which has the opticalengine cover which cover the optical path of the main light and the housing
cover.
2) To employ the structure where light does not leak outside by installing
pass-each-other walls at the intake air/exhaust air openings.
Entrust specific countermeasures to manufacturers.

In addition, attention has to be paid that the laser light which exceeds Class 1 AEL does not leakoutside from the join of the protective housing. For this reason, it is desirable to design for laser lightso as not to leak from the join of the protective housing by employing the fit structure shown in thefollowing Figure 10.3.1.
Meanwhile, the structure shown in Figure 10.3.1 is one example of prevention for laser light leak;Entrust specific countermeasures to manufacturers.

- 31 -

Protective housing

Laser light

Leaked light

No good

Figure 10.3.1

Protective housing

Laser lightGood

Example of the prevention for laser light leak by the protective housing
Remark: Entrust specific countermeasures for laser light leak from the protective
housing to manufacturers.

10.4

Alert for users

It is hazardous to continue to use the projector in failure state; in some cases, it is likely to damage
eye due to laser light. Therefore, it is desirable to alert users by writing down the following note in
the operation manual.
(a)

Write down the fact that use of a broken product is not only the cause of “electric shock” and“fire” but also is the cause of eye injury.

(b) Alert users that when the trouble is found, immediately stop the use, and ask the dealer torepair it.

＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿
Single-fault condition (IEC 60825-1: 2007/JIS C 6802: 2011)
All single-fault conditions occur in a product, and the conditions include the inevitable consequent directly
caused by such a failure.

- 32 -

11
11.1

OthersRequirements in manufacturing

In manufacturing a projector which uses laser devise as light source, it is desirable to prevent
workers from exposure to laser light emission which exceeds Class 1 AEL in order to protect workers’
eye damages; otherwise, it is necessary to take measures listed in Table 6.1.1 and Table 6.2.1
through Table 6.2.3 in Section 6 in this guideline depending on the emitted laser light class.
Remark: For example, in assembling work of the laser device as light source, so as not toexceed Class 1,
1) By preparing a protective housing for the assembly, and the structure is to be
designed so as not be energized unless the laser device as light sourceiscovered.
2) In the assembly work, laser’s drive current value should be controlled so as not
to emit the laser light exceeds Class 1 .
Entrust specific countermeasures to manufacturers.

Particularly, even though in case of malfunction during the assembly work, in order to protect
worker’s eye, it is necessary to make arrangements that the assembly work is to be performed at theposition where the laser light does not come to worker’s eye level and the laser light does not emit
toward the worker. In addition, during the assembly work, in order to avoid laser light unexpected
specular reflection, due attention has to be paid concerning the surrounding work environment andworker’s accessories.
The structure is to be designed so that when the housing cover or light source cover is opened, thelight source does not light, or the main light beam cannot be seen.
－ The structure is to be designed so that when the housing cover is opened, the light does notlight, or the main light cannot be seen in the case of the laser emission exposure exceeding
Class 3B or more.
－ The structure is to be designed so that when the light source cover is opened, the light does notlight, or the main light cannot be seen in the case of the laser emission exposure exceeding
Class 1.
Remark: For example,
1) Lighting of the light source is to be controlled by installing an access sensor on
the housing cover.
2) Lighting of the light source is to be controlled by installing an access sensor on
the light source cover.
Entrust specific countermeasures to manufacturers.

- 33 -

Safety and health education listed in Table 6.2.2 in Section 6 in this guideline should be provided toworkers without fail, and it is necessary to let workers know the risk of the laser light.
11.2

Requirements for servicing information

Based on Section 6.2 in the IEC 60825-1, the maintenance schedule necessary to maintain the
products, avoidance measures for laser emission exposure, clear alerts to avoid other hazards andthe notes of caution should be included in the servicing information for the adjustment work and its
procedures of each product for the service agent, retailer, and other persons who request them.
Furthermore, these servicing information must include clear directions about the position of theremovable part of the protective housing which may cause laser emission exposure exceed given
product’s AEL, and the procedures available to persons other than the manufacturers and theiragents to increase the laser emission exposure level, the procedures to protect service persons, andclear copies (color is free) of the required labels and hazard warning.
The following matters should be included in the servicing information.
(a)

Maintenance schedule for the service person necessary for maintenance of the product.
Remark: This is designated by the manufacturers, and it is assumed that this is carried out
by the service person has special knowledge; accordingly, it is not intended to be
carried out by users.

(b)

Warning to avoid the possibility of hazardous laser emission exposure which exceeds
Class 1 AEL.
Remark: For example,
1) Warning that if you open the protective housing, it is likely to be exposed tohazardous laser emission.
2) Warning that you should not look into the laser light3) Warning that if you ignore the warning, there may be serious damage to thehuman body.
As for the statement, it is desirable to use the standardized phrase among
manufacturers.

(c)

In the safety equipment required by the standards, the functions known to the service person
who has been designated by the manufacturer and has special knowledge in performing service
procedures, must be written down in the servicing information.

- 34 -

Remark: The unlock mechanism of the safety interlock and the notice of warning duringunlocking are included.

(d)Description of the position of removable protective housing. In the case of the protective
housing which has the mechanism to unlock the safety interlock, the description of the positionof the safety interlock, and the unlock method.

(e)

The list of laser emission control methods, and control position in the service procedures.
Remark: The method of the laser oscillation and the method of control equipment which isable to control the laser output and the position of it are equivalent to this.

(f)

Clear copies (color is free) of all labels stuck to the laser product, and description of the position
stuck. As to description the positions, it is desirable to show them diagrammatically.

11.3
(a)

Requirements in the case of disposal
In the case of disposal of the projector, the disposal should comply with the law and ordinanceof each country without disassembling it; this should be written down in the servicing
information.

(b) As to handling of disassembly by a collection trader, it should comply with the provisions in
Section 9 Safety guideline for disassembly in this guideline.
11.4

Requirements concerning optional lensThis section is applicable to only the projector with interchangable optional lens.
If the projection lens is replaced while the light source is lighted, the strong light from inside of the
projector is projected toward the screen, so risks of “electric shock” as well as “impairment ofeyesight” are concerned.
For this reason, the following safety measures must to be taken.
(a)Alert in the servicing information

The note of caution that in the case of removal of the projection lens or replacement of the projection
lens, such should not be performed in the power-on state is to be written down in the servicing
information.
(b)

Even in the state of being removed of the projection lens, the projector is to be designed so thatthe laser light exceeds the specified AEL of the projector does not leak outside.
- 35 -

Remark: For example, as to the safety lock mechanism, it is to be designed so that in thestate of being removed of the projection lens, the light source does not light.
Entrust specific countermeasures to manufacturers.

- 36 -

12
12.1

Organization table of Draft preparing committee
Members of Data Projector Group (Random order. Title of respect is omitted.)（Chief of the Group）

Kiyohide TAKAGINEC Display Solutions, Ltd.

（Until May 2012）(Chief of the Group)

Minoru KATO

Hitachi Maxell, Ltd.

（From June 2012）（Sub-chief of the Group）

Satoshi HIRASHIMASEIKO EPSON CORPORATION（Sub-chief of the Group）

Yoshihiro MASUMOTO

Panasonic Corporation（Member）

Akinori KANEKO

Micro Solution Co., LTD.

Fusao NISHIURACASIO COMPUTER CO.,LTD.

Kazuyasu FUKANOCASIO COMPUTER CO.,LTD.

Takanobu SUZUKI

Canon Inc.

Tatsuro YASHIRO

Canon Inc.

Kazuto SUGIMURA

Panasonic Corporation

Yoshio SASANUMA

Sharp Corporation

Yasuhito SATO

Sharp Corppration

Satoshi OHNOSony Corporation

Yoshihisa KUDO

NEC Display Solutions, Ltd.

Yosuke YOSHIWARA

Mitsubishi Electric Corporation

Hiroki SHIMIZU

Ricoh Company, Ltd.

Masashi SHINOHARA

Japan Business Machine and（Secretariat）

Information System Industries
Association- 37 -

12.2

Members of New Light Projector Working Group (Random order. Title of respect isomitted.)（Chief of the Working Group）

Motoyasu UTSUNOIMIYA NEC Display Solutions, Ltd.

（Until June 2012）（Chief of the Working Group）

Tsuneharu NOMURASony Corporation（From July 2012）（Sub-chief of the Working Group）Yoshimasa FUSHIMI

Panasonic Corporation（Sub-chief of the Working Group）Hiroshi ONODERASEIKO EPSON CORPORATION（Member）（Secretariat）

Hiroshi SATO

Canon Inc.

Seiji TSUCHIKAWA

Sharp Corporation

Hidehiro IKEDA

Hitachi Maxell, Ltd.

Masayuki FUKUIHitachi Maxell, Ltd.

Kazuhiro ARAI

Panasonic Corporation

Hiroshi KIDA

Mitsubishi Electric Corporation

Shinji YAGYU

Mitsubishi Electric Corporation

Kazuhiro FUJITA

Ricoh Company, Ltd.

Hiroki MASUDACASIO COMPUTER CO., LTD.

Masashi SHINOHARA

Japan Business Machine andInformation System Industries
Association- 38 -

12.3

Preparation collaborator: Laser Society of Japan

12.3.1

Laser Display Technology Expert Committee(Random order. Title of respect is omitted.)（chief investigator）

Kazuhisa YAMAMOTO（Sub-chief investigator）Tetsuya YAGI

Mitsubishi Electric Corporation

Tatsuo ITO

Panasonic Corporation（Member）

63 members（Organizer）

Masatoshi FUJIMURA

Osaka University

Hiroshi MURATA

Osaka University

Hiroshi KUROSAWA

Japan Science and Technology Agency

Kazuo KURODA

The University of Tokyo

Yasuhiro KOIKE

Keio University

Takatomo SASAKIOsaka University

Toshiaki NARAHARA

Osaka University

Hirochika NAKAJIMA

Waseda University(Adviser）

12.3.2

Osaka University

Laser Display Safety Working Group (Random order. Title of respect is omitted.)（Chief investigator） Sunao KURIMURANational Institute for Materials Science（Sub-chief investigator）Shin-ichi KADOWAKI（Member）

Panasonic System Networks Co., Ltd.

Shunji KAMIJIMASEIKO EPSON CORPORATION

Masafumi IDE

Citizen Holdings Co., Ltd.

Tatsuo ITO

Panasonic Corporation

Satoshi OUCHI

Hitachi Maxell, Ltd.

Daisuke OTSUHATA

THE NIPPON SIGNAL CO., LTD.

Junichi KINOSHITAHARISON TOSHIBA LIGHTING
Corporation

Tatsuru KOBAYASHIJVC KENWOOD Corporation

Kenji KONNO

Konica Minolta Technology Center, Inc.

Kenichiro SAISHORicoh Company, Ltd.

Shigeru SHINZAWA

MicroVision Inc.

Yoshihiro SOMENOALPS ELECTRIC CO., LTD.

Kenji NAGASHIMAFUNAI ELECTRIC CO., LTD.

Akira MUZUYOSHI

FUJIFILM Corporation

Mitsuyoshi WATANABE

Brother Industries, Ltd.

3 other members（liaison）

Kazuhisa YAMAMOTO- 39 -

Osaka UniversityReference1)

IEC 60825-1:2007
Safety of laser products -2)

Part1：Equipment classification and requirements

JIS C 6802:2011
Safety standards of laser products

3)

IEC 60065:2011
Audio, video and similar electronic apparatus - Safety requirments

4)

IEC 60950-1:2005
Information technology equipment -safety-

5)

Part1：General requirements

IEC 62368-1:2010
Audio/video, information and communication technolory equipment–Part1：Safety requirments

6)

ISO/IEC 21118:2005
Information to be included in specification sheets - Data projectors

7)

JIS X 6911:2003
Data projector specifications format

8) IEC 61947-1:2002
Electronic projection -Measurement and documentation of key performance criteria- Part1:Fixed resolution projectors
9) JIS K 6800:1985
Adhesive/Adhesive terms
10) Laser safety guidebook: 4th edition
Edition by Optoelectronic Industry and Technology Development Association
11) Prevention measures plan concerning damages due to the laser beam (Health, Labor andWelfare Ministry: Notification No. 39 exhibit)
http://www.mhlw.go.jp/bunya/roudoukijun/anzeneisei/050325-1a.html
12) Prevention measures concerning damages due to the laser beam (Health, Labor and Welfare
Ministry: Notification No. 0325002)
http://www.mhlw.go.jp/bunya/roudoukijun/anzeneisei/050325-1.html- 40 -