WHEREAS Council at its meeting of March 20, 1995 adopted the recommendation
from the Transportation and Works Committee meeting of March 7, 1995,
in Staff Report SRS.95.12, respecting adoption of a light pollution by-law;
AND WHEREAS regulation of the installation and use of outdoor lighting
can reduce the emission into the night sky of light rays which can have
a detrimental effect on astronomical observation;
AND WHEREAS the Council of the Corporation of the Tower of Richmond Hill
wishes to regulate the outdoor lighting in order to provide an appropriate
environment for the University of Toronto's David Dunlap Observatory;
AND WHEREAS the Town of Richmond Hill Act, 1993 permits the Council of
the Corporation to pass by-laws for prohibiting or regulating outdoor
light fixtures.
NOW THEREFORE THE COUNCIL OF THE CORPORATION OF THE TOWN OF RICHMOND
HILL ENACTS AS FOLLOWS:
1. Definitions
1.1 In this By-law:
(a) "Automatic Timing Device" means a device which automatically
turns light fixtures or circuits on and off;
(b) "Average Maintained Horizontal Illuminance: means the density
of light flux in an outdoor area or areas calculated:
(i) on a horizontal plane at ground level;
(ii) as an average flux density over the surface of the outdoor area
or areas; and
(iii) applying a light loss factor calculated by methods prescribed
by the lighting handbook of the Illuminating Engineering Society or
any successor publication;
with calculations made by, or on the basis of lighting plans and other
information provided by, manufacturers or suppliers of the Outdoor Light
Fixtures and made in a manner consistent with the lighting handbook of
the Illuminating Engineering Society or any successor publication;
(c) "Average Maintained Vertical Illuminance" means the density
of light flux in an outdoor area or areas calculated:
(i) on a vertical plane at the vertical surface of that part of the
Building or other structure being illuminated;
(ii) as an average flux density over the entire exterior surface
of that part of the Building or other structure being illuminated;
and
(iii) applying a light loss factor calculated by methods prescribed
by the lighting handbook of the Illuminating Engineering Society or
any successor publication;
with calculations made by, or on the basis of lighting plans and other
information provided by, manufacturers or suppliers of the Outdoor Light
Fixtures and made in a manner consistent with the lighting handbook of
the Illuminating Engineering Society or any successor publication;
(d) "Building" has the meaning ascribed to it in the Building
Code Act, 1992, or any successor legislation;
(e) "By-law Enforcement Officer" means all individuals from
time to time appointed by Council of the Corporation as by-law enforcement
officers for the purpose of enforcing the provisions of this By-law;
(f) "Chief Building Official" means the Corporation's chief
building official;
(g) "Commissioner of Transportation and Works" means the
person holding the position of the Corporation's commissioner of transportation
and works;
(h) "Corporation" means The Corporation of The Town of Richmond
Hill;
(i) "Designated Official" means the Commissioner of Transportation
and Works or any other Person designated by Council of the Corporation
to administer certain provisions of this By-law;
(j) "Dwelling Unit" means living accommodation comprising
a single housekeeping unit designated or intended for use by one individual
or by individuals living together as a single housekeeping unit and
consisting of a room or suite or rooms in which both culinary and sanitary
facilities are provided for the exclusive use of such individual or
individuals;
(k) "Existing Outdoor Light Fixtures" has the meaning ascribed
to it in Subsection 11.1;
(l) "Grade" means, with reference to a Building or to an
Outdoor Light Fixture affixed to a Building, the average level of proposed
or finished ground adjoining the Building at all exterior walls and,
when used with reference to an Outdoor Light Fixture affixed to a pole
or to a structure other than a Building, means the average level of
proposed or finished ground immediately surrounding such pole or structure
other than a Building;
(m) "Illuminating Engineering Society" means the Illuminating
Engineering Society of North America or any successor organisation;
(n) "Internally Illuminated Sign" means a Sign of which all
or part of the external surface emits light received from an internal
light source;
(o) "Lamp" means an artificial source of light and includes
a bulb or tube;
(p) "Lane" means a public or a private means of access which
affords a secondary means of access to an abutting property in addition
to a Street;
(q) "Light Fixture" means a complete artificial lighting
unit consisting of one or more Lamps and ballasting, where applicable,
together with parts designed to distribute the light, position and protect
the Lamps and connect the Lamps to the power supply;
(r) "Lot" means a parcel or tract of land:
(i) which is a whole lot as shown on a registered plan of subdivision,
but a registered plan of subdivision for the purpose of this definition
does not include a registered plan of subdivision which has been deemed
not to be a registered plan of subdivision under a by-law passed pursuant
to Subsection 50(4) of the Planning Act or a predecessor thereof;
or
(ii) which fronts on a Street and is a separate parcel of land without
any adjoining lands being owned by the same owner or owners as of
the date of passing of this By-law, or
(iii) the description of which is the same as in a deed which has
been given consent pursuant to Section 50 of the Planning Act, or
a predecessor thereof,
but for the purpose of this definition, no parcel or tract of land ceases
to be a lot by reason only of the fact that part or parts of it has or
have been conveyed to or acquired by the Corporation, Her Majesty in Right
of Ontario, Her Majesty in Right of Canada, or the Regional Municipality
of York;
(s) "Outdoor Light Fixture" means a Light Fixture, permanent
or portable, used or for use out of doors, including search lights,
spotlights and floodlights, but not including Internally Illuminated
signs;
(t) "Outdoor Recreational Facilities" means lands or facilities
used for recreational purposes, including without limitation playgrounds,
racquet courts, softball diamonds, baseball diamonds, soccer fields
or other athletic fields, lawn bowling greens, golf courses, skating
rinks, swimming pools and snow skiing, carried on in whole or in part
outside a fully-enclosed Building and together with necessary accessory
Buildings and structures;
(u) "Owner" includes the registered owner of real property,
the Person who owns a leasehold estate in real property, and any Person
having control of real property, and also includes a Person the owner
authorises in writing to act on his or her behalf;
(v) "Person" means any individual, partnership, joint venture,
corporation or other entity;
(w) "Shielded" means that 98% of the lumens emitted from
the Light Fixture are projected below an imaginary horizontal plane
passing through the highest point on the fixture from which light is
emitted;
(x) "Sign" means any advertising device or notice and means
any medium including its structure and any other component parts which
is used or is capable of being used to attract attention to a specific
subject matter;
(y) "Street" means a public highway as defined by the Municipal
Act and shall exclude a Lane or any private right-of-way or unopened
road allowance or any street which is shown on a registered plan of
subdivision which has been deemed not to be a registered plan of subdivision
for the purposes of Subsection 50(3) of the Planning Act, or a predecessor
thereof;
(z) "Street Townhouse" means a Building divided vertically
into three or more Dwelling Units, each of which shares a wall above
Grade, and each of which has frontage on a Street.
PART I
APPLICATION AND COMPLIANCE
2. Appliance of By-law
2.1 Except as otherwise provided in this By-law, this By-law applies
to all Outdoor Light Fixtures erected, installed or used in the Town of
Richmond Hill in conjunction with:
(a) commercial uses, including parking lots;
(b) industrial uses;
(c) institutional uses;
(d) recreational or athletic uses; or
(e) residential uses of five Dwelling Units or more on a single Lot.
2.2 All Outdoor Light Fixtures which produce light directly or indirectly
by the combustion of natural gas or other fossil fuels, such as gas lamps,
are exempt from the requirements of the By-law.
2.3 Outdoor Light Fixtures used exclusively in conjunction with Street
Townhouses are exempt from the requirements of this By-law.
2.4 Nothing in this By-law prohibits the temporary display of incandescent
lights, other than search lights, as part of the celebration of a religious
or cultural event during a reasonable period of celebration of that event
which reasonable period shall in no event extend for more than thirty
days prior to the date of the event or celebration or thirty days after
such date.
2.5 Except as provided in Subsection 11.1, the provisions in Parts II
and III of this By-law do not apply to Outdoor Light Fixtures existing
and installed prior to the effective date of this By-law.
3. Compliance
No Person shall erect, install or use, or permit to be erected, installed
or used, an Outdoor Light Fixture otherwise than in compliance with the
provisions of this By-law.
PART II
GENERAL REQUIREMENTS REGARDING INSTALLATION OF OUTDOOR LIGHT FIXTURES
4. Shielding
4.1 Except as provided in Subsection 4.2, no Person shall erect, install,
or use, or permit to be erected, installed or used, an Outdoor Light Fixture
which is not Shielded.
4.2 The following Outdoor Light Fixtures are not required to be Shielded:
(a) Outdoor Light Fixtures which are illuminance tube lighting containing
neon, argon or krypton;
(b) Outdoor Light Fixtures Illuminating Building entrance or exit doorways
where such fixtures are incandescent fixtures with each fixture having
light sources totalling not more than 150 watts and provided that there
are not more than two fixtures lighting each entrance or exit doorway;
(c) Outdoor Light Fixtures used exclusively for and in connection with
the television broadcasting of events at Outdoor Recreational Facilities,
but only while the television broadcasting is being carried on;
(d) Outdoor Light Fixtures used exclusively for an in connection with
the production of movies or commercials, but only while production is
being carried on and provided that any permits required from the Corporation
or any other governmental authority for the production of such movies
or commercials have been obtained; and
(e) Outdoor Light Fixtures used exclusively for an in connection with
the presentation of concerts, plays or other non-athletic entertainment
events in parks or on other lands owned by the Corporation and used
for public purposes.
4.3 Where Outdoor Light Fixtures are required to be Shielded, no Person
shall erect, install or use, or permit to be erected, installed or used,
an Outdoor Light Fixture which is of a design which allows the direction
of light projection to be modified after installation unless the Outdoor
Light Fixture is Shielded in all possible configurations of the fixture.
5. Wavelength Distribution
5.1 Except as provided in Subsection 5.2, no Person shall erect, install
or use or permit to be erected, installed or used a Lamp or an Outdoor
Light Fixture which includes or is designed to include a Lamp which is
of a type other than:
(a) incandescent;
(b) low pressure sodium;
(c) high pressure sodium;
(d) carbon arc; or
(e) any other type which satisfies the wavelength distribution requirements
set out in Schedule A.
5.2 The provisions of Subsection 5.1 do not apply;
(a) to Lamps or Outdoor Light Fixtures that illuminate areas used for
the outdoor display of merchandise for sale, provided that the applicable
zoning by-law and other applicable law permits such outdoor display
of merchandise;
(b) to Lamps or Outdoor Light Fixtures lighting Outdoor Recreational
Facilities located north of Stouffville Road; or
(c) to Lamps or Outdoor Light Fixtures which come within the provisions
of paragraphs (c), (d) or (e) of Subsection 4.2.
6. Mounting Height
6.1 Except as provided in Subsection 6.2, no Person shall erect, install
or use or permit to be erected, installed or used an Outdoor Light Fixture
at a mounting height above the higher of:
(a) 253 meters above sea level; or
(b) 9.2 meters above Grade.
Mounting height refers to the height of the Lamp, or the highest of the
Lamps if there is more than one Lamp, forming part of the Outdoor Light
Fixture.
6.2 There is no restriction on the mounting height of Outdoor Light Fixtures
lighting Outdoor Recreational Facilities or Streets.
7. Automatic Timing Devices
7.1
(a) No Person shall erect, install or use or permit to be erected,
installed or used, Outdoor Light Fixtures in conjunction with uses described
in paragraphs (a), (b), (c) and (d) of Subsection 2.1 unless a sufficient
number of such Outdoor Light Fixtures are equipped with Automatic Timing
Devices which turn off Outdoor Light Fixtures between 11:00 p.m. and
sunrise the following day to satisfy the requirements of Section 10.
(b) The Owners of real property on which Outdoor Light Fixtures have
been equipped with Automatic Timing Devices shall maintain the Automatic
Timing Devices in good state of repair and replace any Automatic Timing
Devices which are damaged, destroyed or removed.
PART III
ILLUMINANCE LEVELS
8. Horizontal Illuminance
8.1 All Persons erecting, installing or using, or permitting to be erected,
installed or used, Outdoor Light Fixtures in conjunction with uses described
in Subsection 2.1 shall ensure that:
(a) Except as provided in paragraph (b) and (c), the Average Maintained
Horizontal Illuminance of all outdoor areas on a Lot shall not exceed
16.5 lux (1.5 footcandles);
(b) In an area used for the outdoor display of merchandise for sale,
provided that the applicable zoning by-law and other applicable law
permits such outdoor display of merchandise, the Average Maintained
Horizontal Illuminance shall not exceed 215.2 lux (20 footcandles);
and
(c) In an Outdoor Recreational Facility, the Average Maintained Horizontal
Illuminance shall not exceed 323 lux (30 footcandles).
9. Illumination of Vertical Surfaces
9.1
(a) Except as provided in paragraph (b), where vertical surfaces of
Buildings or other structures are illuminated for decorative purposes
or for any other purpose, the Average Maintained Vertical Illuminance
of such vertical surfaces shall not exceed 64.6 lux (6 footcandles);
(b) The provisions of paragraph (a) shall not apply to Outdoor Light
Fixtures installed in conjunction with Outdoor Recreational Facilities.
PART IV
HOURS OF OPERATION
10. Turning Off Outdoor Light Fixtures
10.1 All Owners of property on which Outdoor Light Fixtures are erected,
installed or used in conjunction with the uses described in paragraphs
(a), (b), (c) and (d) of Subsection 2.1 shall ensure that those Outdoor
Light Fixtures are turned of between 11:00 p.m. and sunrise the following
day except as follows:
(a) Outdoor Light Fixtures may remain on to illuminate outdoor areas
for security purposes provided that the Average Horizontal Illuminance
of outdoor areas shall not exceed:
(i) 10.76 lux (1 footcandle) for all outdoor areas other than those
described in subparagraph (ii); and
(ii) 53.8 lux (5 footcandles) in any area which is used for the outdoor
display of merchandise for sale, provided that such outdoor display
of merchandise is permitted under the applicable zoning by-law or
any other applicable law;
(b) where an outdoor recreational use in an Outdoor Recreational Facility
continues after 11:00 p.m., Outdoor Light Fixtures required to be on
in connection with that use are permitted, but only while that use continues;
(c) where a concert, play or other entertainment event in a park or
on other lands owned by the Corporation and used for public purposes
takes place or continues after 11:00 p.m., Outdoor Light Fixtures required
to be on in connection with that event are permitted, but only while
the event takes place or continues; and
(d) in an area which is used for commercial, industrial or institutional
uses where such uses are carried on after 11:00 p.m. and personnel relevant
to such uses are carried on after 11:00 p.m. and personnel relevant
to such sues are working on the premises, Outdoor Light Fixtures required
to be on in connection with such uses are permitted, but only while
as such uses are carried on.
PART V
REPLACING EXISTING OUTDOOR LIGHT FIXTURES
11. Existing Outdoor Light Fixtures
11.1
(a) Except as provided in paragraphs (b) and (c), Outdoor Light Fixtures
existing and installed on a Lot prior to the effective date of this
By-law ("Existing Outdoor Light Fixtures") are exempt from
the provisions of this By-law save and except the provisions of Part
IV-Hours of Operation.
(b) No Person shall modify or permit to be modified an Outdoor Light
Fixture including an Existing Outdoor Light Fixture in a way which changes
that fixture from a fixture which is Shielded to a fixture which is
not Shielded or from a fixture which satisfies the requirements of Section
5.1 to a fixture which does not satisfy those requirements.
(c) Where an Owner:
(i) constructs a Building on a Lot which is used or intended to be
used for one or more purposes described in Subsection 2.1 and on which
there are Existing Outdoor Light Fixtures, and
(ii) in conjunction with that construction, replaces 50% or more
of the Existing Outdoor Light Fixtures on the Lot or increases by
50% or more the number of Outdoor Light Fixtures existing on the Lot
immediately prior to the effective date of this By-law,
the Owner shall ensure that all Outdoor Light Fixtures on that Lot, including
Existing Outdoor Light Fixtures, comply with all of the provisions of
this By-law and if Existing Outdoor Light Fixtures are required to be
replaced or modified to achieve compliance, the Owner shall replace or
modify those Existing Outdoor Light Fixtures.
PART VI
PLANS AND DOCUMENTS
12. Plans and Documents
12.1 Where a Person:
(a) proposes to lay out and establish a commercial parking lot or proposes
to construct a Building on a Lot used or intended to be used for one
or more purposes described in Subsection 2.1; and
(b) proposes to install or erect Outdoor Light Fixtures in conjunction
with such commercial parking lot or Building;
that Person shall file with the Designated Official a lighting plan together
with related documents and information to satisfy the Designated Official
that the proposed lighting will comply with the provisions of this By-law.
Where the provisions of paragraph (c) of Subsection 11.1 apply, the lighting
plan, documents and information also shall satisfy the Designated Official
that Existing Outdoor Light Fixtures will comply with the provisions of
this By-law.
12.2 The Submission shall contain, but shall not be limited to the following:
(a) plans indicating;
(i) the location of all Buildings and structures on the property,
(ii) the location, number, type, position, elevation and mounting
height of all Outdoor Light Fixtures;
(iii) the number and location of Outdoor Light Fixtures to be equipped
with Automatic Timing Devices; and
(iv) any building design or other features which may affect the nature,
intensity or direction of light emission from Outdoor Light fixtures;
(b) description of and background information regarding all Outdoor
Light Fixtures, including;
(i) power (in watts);
(ii) type of light source;
(iii) filtering, if any;
(iv) information evidencing whether or not Outdoor Light Fixtures
are Shielded;
(v) information as to light distribution in the horizontal and vertical
phase planes;
(vi) information as to light distribution in the horizontal plane
between 11:00 p.m. and sunrise the following day; and
(vii) manufacturer's catalogue information and drawings; and
(c) information regarding the design capability of the Outdoor Light
Fixture to permit any change in the items referred to in paragraphs
(a) and (b).
The above required plans and descriptions shall be sufficiently complete
to enable the Designated Official to readily determine whether the requirements
of this By-law will be complied with.
12.3 If the plans and descriptions referred in Subsection 12.1 do not
enable the Designated Official to readily determine whether the requirements
of this By-law will be complied with, the Person referred to in Subsection
12.1 shall submit further evidence of compliance, such as reports of tests
evidencing compliance performed and certified by a testing laboratory
recognised by the Illuminating Engineering Society.
12.4
(a) The Chief Building Official shall not issue a building permit for
any construction in respect of which a lighting plan is required pursuant
to Subsection 12.1 if the required plan has not been filed and approved
by the Designated Official.
(b) When a lighting plan is required to be filed under this By-law
in connection with the laying out and establishment of a commercial
parking lot, Council of the Corporation or its designated official for
granting site plan approval shall refuse to grant site plan approval
for such development if the required lighting plan has not been filed
and approved by the Designated Official.
12.5 No Person shall commence construction of any development referred
to in Subsection 12.1 until the lighting plan has been filed and approved
by the Designated Official.
12.6
(a) Where an approved lighting plan is required, no Person shall erect
or install, or permit to be erected or installed, Outdoor Light Fixtures
except in accordance with the approved lighting plan or a change application
approved in accordance with paragraph (b).
(b) If there is an approved lighting plan in place and a Person proposes
to modify the approved lighting plan or to install Outdoor Light Fixtures
otherwise than in accordance with the approved lighting plan (including
any change in the type of Lamp shown on the approved plan) the applicant
shall submit a change request to the Designated Official together with
adequate information to evidence compliance with the requirements of this
By-law.
PART VII
COMPLIANCE ALTERNATIVES AND ADMINISTRATIVE EXEMPTIONS
13. Compliance Alternatives
13.1 The provisions of this By-law are not intended to prevent the use
of any design, material or method of installation not specifically prescribed
by this By-law, provided any such alternate design, material or method
of installation has been approved by the Designated Official. The Designated
Official may approve any such proposed alternative provided that he or
she finds that it:
(a) provides at least approximate equivalents to the applicable specific
requirements of this By-law; and
(b) is otherwise satisfactory and complies with the intent of this
By-law.
The Designated Official shall cause the David Dunlap Observatory to be
notified of each request for alternate design, material or method of installation
prior to making a decision on such request.
14. Administrative Exemptions
14.1 Council of the Corporation may grant an exemption or minor variance
from some or all of the provisions of this By-law upon the application
of any Person if in the opinion of council compliance with the By-law
is impracticable and the general intent and purpose of the By-law are
maintained.
14.2 If the request for an exemption or minor variance is approved by
council, a written record of the request and approval shall be kept by
the Corporation and shall be open to public inspection.
14.3 The Designated Official shall cause the David Dunlap Observatory
to be notified of each application for an exemption prior to council making
a decision on such application.
PART VIII
INSPECTION AND OFFENCES
15. Inspectors
15.1 All By-law Enforcement Officers hereby are appointed inspectors
for the enforcement of this By-law.
16. Entry
16.1 For the purpose of determining whether there is compliance with
this By-law, an inspector may have access to or enter any land, Building
or structure governed by this By-law between the hours of 6:00 am and
9:00 p.m. and may conduct an inspection.
16.2 No inspector may enter a Building or structure that is also a dwelling
without the consent of the occupant or without first obtaining and producing
a warrant.
16.3 An inspector conducting an inspection shall produce identification
issued by the clerk of the Corporation upon request.
17. Powers on Inspection
17.1 Any inspector conducting an inspection may inspect the land, Building
or structure and may question a Person on manners relevant to the inspection.
17.2 No Person shall hinder or obstruct an inspector lawfully conducting
an inspection under this Act.
17.3 Any Person who contravenes Subsection 17.2 is guilty of an offence.
18. Application for Warrant
18.1 An inspector may apply to a Justice of the Peace for a warrant if:
(a) the inspector has been denied access or entry to any land, Building
or structure;
(b) the inspector has been instructed or directed to leave any land,
Building or structure; or
(c) the inspector has been obstructed in the conduct of the inspection.
19. Offence and Penalty
19.1 Whenever in this By-law there is a duty imposed upon any Person
and such Person fails to perform such duty, such Person is guilty of an
offence under this By-law and upon conviction is liable to a maximum fine
as established pursuant to the Provincial Offences Act, or any successor
legislation.
19.2 Without limiting any other provision of this By-law and in addition
thereto, any Person who otherwise contravenes the provisions of this By-law
is guilty of an offence and upon conviction is liable to a maximum fine
as established pursuant to the Provincial Offences Act, or any successor
legislation.
PART IX
MISCELLANEOUS
20. Citation
20.1 This By-law may be cited as the "light Pollution By-law".
21. Illuminating Engineering Society
Notwithstanding any other provisions in this By-law, nothing in this
By-law shall have the effect of requiring outdoor lighting which provides
a lower level of illuminance for a use or activity than the minimum level
of illuminance recommended for such use or activity in the lighting handbook
of the Illuminating Engineering Society in effect at the time of installation
or replacement of Outdoor Light Fixtures or any successor publication.
22. General
22.1 Schedule A hereto is incorporated in and forms part of this By-law.
22.2 The references to footcandles in this By-law are for convenience
only and represent the approximate imperial equivalent of the measurements
expressed in lux. When the measurements expressed in lux and footcandles
are different, the measurements expressed in lux shall prevail.
22.3 The division of this By-law into parts, sections, subsections, paragraphs
and subparagraphs and the insertion of headings are for convenience of
reference only and shall not affect the construction or interpretation
of this By-law.
22.4 If any provision of this By-law or the application thereof to any
Person or circumstance is invalid, this invalidity shall not affect other
provisions or application of this By-law which can be given effect without
the invalid provision or application, and to this end the provisions of
this By-law are severable.
23. Effective Date
23.1 This By-law shall come into effect upon third reading and passage
of the By-law.
READ A FIRST AND SECOND TIME THIS 20TH DAY OF MARCH, 1995
READ A THIRD TIME AND PASSED THIS 20TH DAY OF MARCH, 1995
SCHEDULE A
WAVELENGTH DISTRIBUTION REQUIREMENTS
For purposes of this Schedule A "Total Emergent Flux" means
the total amount of light energy emitted by a Lamp in the wavelength band
between 320 and 700 nanometers.
Lamps of Outdoor Light Fixtures satisfy the requirements of Section %.1
of the By-law:
(a) where
(i) not more than 5% of the Total Emergent Flux emitted by the Lamp
or the Lamp or Lamps forming part of the Outdoor Light Fixture is
at wavelengths between 320 nanometers and 340 nanometers;
(ii) Not more than 20% of the Total Emergent Flux emitted by the
Lamp or the Lamp or Lamps forming part of the Outdoor Light Fixture
is at wavelengths between 340 nanometers and 440 nanometers; and
(iii) Not more than 15% of the Total Emergent Flux emitted by the
Lamp or the Lamp or Lamps forming part of the Outdoor Light Fixture
is at wavelengths between 641 nanometers and 700 nanometers;
or
(b) where the Lamp or the Lamp or Lamps forming part of the Outdoor
Light Fixture emit light energy in a smooth continuum without an emission
line anywhere in the wavelength range of 320 nanometers to 700 nanometers.