| 摘要 |
An apeture mechanism that utilizes translucent, transparent or colored blades to modify the output beam of a lighting device is provided. A conventional apeture mechanism having replacement blades formed of a diffusion screen provides a control assembly that, when placed in front of the output beam of a lighting device, allows the user to selectively control the beam between a spot and a flood pattern. Further, the blades may be formed of translucent or transparent colored filter material to alter the color of the output beam. The apeture mechanism may be incorporated into compact lighting devices such as flashlights, architectural lighting devices or other accessories for use in conjunction with these lighting devices.
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