Device comprising light source and light blocker

一种光阻断器、光源的技术，应用在光源、点状光源、照明装置等方向，能够解决降低光源效率等问题

Active Publication Date: 2014-07-30
KONINKLJIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For example, known photoblockers absorb light, which reduces the efficiency of the device's light source

Method used

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  • Device comprising light source and light blocker
  • Device comprising light source and light blocker
  • Device comprising light source and light blocker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] exist figure 1 , a sawtooth 13 is shown having a first side 14 and a second side 15, and a third side 16, the first side 14 and the second side 15 forming the top of the sawtooth 13 (for example) at about 90°, and the third Side 16 is relatively perpendicular to a line (not shown here) passing through the center of the light source (not shown here) and the top of the serration 13 .

[0035] exist figure 2 , a first light source 1 and a first photointerrupter 10 are shown. The first light source 1 generates first light into a first directional range 70 (here 360°). The first light blocker 10 blocks the first light on a portion 71 (here 90°) of the first direction range 70 . The first photointerrupter 10 has an inner side 11 and an outer side 12 . The inner side 11 is closer to the first light source 1 than the outer side 12 . The first photointerrupter 10 is made of a material having an optical index. The combination of shape and optical index of the outer side 12...

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PUM

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Abstract

Devices (100) comprise light sources (1) for producing light into directional ranges (70) and light blockers (10) for blocking the light in parts (71) of the directional ranges (70). The light blockers (10) have inner sides (11) and outer sides (12), and are made of materials having optical indices. Combinations of shapes of the outer sides (12) and the optical indices will reflect the light in the parts (71) of the directional ranges (70) at the outer sides (12), for example back to the light sources (1). The shapes of the outer sides (12) may be saw tooth shapes, the optical indices may be larger than 1.4, total reflection may take place for the light in the parts (71) of the directional ranges (70) when incoming at angles smaller than 40 DEG with sides (14, 15) of saw teeth (13) of the saw tooth shapes.; Shapes of the inner sides (11) may correspond with shapes of light output graphs of the light sources (1) in the parts (71) of the directional ranges (70).

Description

technical field [0001] The invention relates to a device comprising a first light source and a first light blocker, the first light source is used to generate first light entering a first direction range, and the first light blocker is used to block light in the first direction range part of the first light on. Examples of such devices are video devices and lighting devices. Background technique [0002] Devices comprising a light source and a light interrupter are common knowledge. [0003] Video devices, such as television receivers, often include a display for displaying video, and may further include a light source for generating ambient light to support the video. To direct ambient light into a preferred direction, a light blocker can be used to block ambient light in non-preferred directions. [0004] Lighting devices, such as lamps, often include a light source for generating light. In order to direct light into preferred directions, light blockers can be used to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V5/02F21V7/00F21Y101/02
CPCF21V5/02F21V7/0091F21Y2115/10F21K9/60F21V7/00F21V7/048
Inventor L.L.A.拉诺耶F.M.D.布鲁尼尔B.D.R.卡特奧E.E.M.范杜梅
Owner KONINKLJIJKE PHILIPS NV
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