| 摘要 |
A lamp comprises one or more light sources encapsulated as by casting in an inner relatively soft impact absorbing transparent material, such as polymerized silicone rubber, and in an outer relatively hard impact resistant transparent material, such as acrylic or glass. The lamp which may be used alone, or in combination with other protective housing components for specialized purposes, such as runway or highway lighting, is impact resistant, pressure resistant, completely sealed, waterproof, electrically insulated, and explosion proof. |
