| 摘要 |
A lighting device can include a housing having a viewing axis and at least one light source. The light source can be comprised of at least one LED, and can be configured to emit light having a spectrum that approximates a noon-day sunlight spectrum. The light source can be disposed in or coupled with the housing, and oriented with respect to the housing so that the emitted light has an angle of incidence from about 15 degrees to about 75 degrees. Thus, the emitted light can have an angle from about 15 degrees to about 75 degrees with respect to the viewing axis. The lighting device can be used to compare the color of different materials having different compositions. Also, the lighting device can be used to illuminate objects that are sensitive to IR and/or UV light.
|
