( Hubble Sky Cap )
Cutoff, Fits on all Dusk to Dawn Luminaires, available
as NITE-TO-LITEtm SKYCAP
Also available through Green Earth Lighting
Also available through Starry Night Lights
Sheet 103 & Hubbell
shield is placed over a wall
mounted flat lens shoe box.
This wall is about 8 feet from the adjoining property.
However it appear to be far more shielding than necessary. Larger
Notes on Modification of
Light Fixtures --
modifications may invalidate the Underwriters
Laboratories (UL) certification. 1.a. Any
modification which compromises the integrity of the fixture,
such as drilling of holes etc. should be avoided. This
invalidates the UL certification. 1.b. Modifications
which would cause excess heat to build up in the
fixture, such as fully enclosing a fixture in a box etc. should be
avoided. 1.c. By
compromising the UL approval, the modifier, property owner, and
others may be liable if fixture failure causes a fire or other damage. 1.d. UL provides
field certification of fixtures. For a large
modification projects field certification may be a prudent approach.
2. Use manufacturers
shielding. 2.a. Most
manufactures provide shield for flood lights, house side
shields or additional shielding for fixtures they manufacture.
3. Photometrics. 3.a. While it is
the intent of a shield to modify the photometrics of a
fixture, reduction of the light pattern in the intended target area
should be avoided. 3.b. If it is shown
that the intended light levels have been reduced
below the jurisdictions minimum levels, liability may be an issue. 3.c. When
ever possible paint the underside of shields white or silver, thus
increasing light levels in the intended target area.
4. Legal Notice 4.a. Because of
liability issues, International Dark-Sky Association
does not support or condone modifications of light fixtures. 4.b. Information
presented here and in our Information Sheets is for
educational purposes only.
Underwriters Laboratories Inc. (UL), is an independent,
not-for-profit product safety testing and standards-writing
organization. UL has been testing
products for more than 110 years. 5.b. There
are no laws specifying that a UL Mark must be
used. However, in the U.S. there are many municipalities that have
laws, codes or regulations which require a product to be tested by a
nationally recognized testing laboratory before it can be sold in their
area. 5.c. Many
companies make it their policy to obtain UL Listing
not only to minimize the possibility of local non-acceptance, but also
as a matter of corporate policy and commitment to minimize the
possibility of risk in the use of their products. 5.d. UL is
concerned with the safety aspect of all potentially hazardous products. 5.e. UL
primarily exists because of "liability issues" as is evident in 5.d.
help us collect photographs and description
or web links that show how various fixtures have been modified to
light pollution or light trespass.