Abstract: A dasher board assembly provides enhanced safety, such as for ice hockey rinks. The assembly is constructed so that on low height impacts a dampening material with at least one of a damping coefficient of about 1.7-3.2×104 N-s/m, a spring constant of about 1.5-3.0×106 N/m, and a loss coefficient greater than 0.15, absorbs the impact. On high height impacts both the dampening material and deflection of cantilevered generally vertical polygonal aluminum tubes absorb the impact. The assembly results in a Head Injury Criteria of less than 250 for all realistic scenarios, and a reduction of HIC values of at least 30% compared to an equivalent assembly with a rigid frame.

Abstract: An ultraviolet radiation blocking sheet for blocking ultraviolet radiation while allowing passage of visible light includes a film that is substantially transparent to light that has a wavelength of 495 to 570 nanometers. The film also is substantially absorbent of light that has a wavelength shorter than 495 nanometers. The film is configured to position between a light source and an object to be protected from ultraviolet radiation. The film absorbs the ultraviolet radiation emitted from the light source while allowing light that has a wavelength of 495 to 570 nanometers to pass through the film to illuminate the object.

Abstract: A dasher board assembly provides enhanced safety, such as for ice hockey rinks. The assembly is constructed so that on low height impacts a dampening material with at least one of a damping coefficient of about 1.7-3.2×104 N-s/m, a spring constant of about 1.5-3.0×106 N/m, and a loss coefficient greater than 0.15, absorbs the impact. On high height impacts both the dampening material and deflection of cantilevered generally vertical polygonal aluminum tubes absorb the impact. The assembly results in a Head Injury Criteria of less than 250 for all realistic scenarios, and a reduction of HIC values of at least 30% compared to an equivalent assembly with a rigid frame.