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Portable illumination device and illumination method

A lighting device and portable technology, which is applied in the direction of portable lighting devices, lighting devices, lighting device components, etc., can solve the problems of displaying different directions, and achieve the effect of improving convenience

Active Publication Date: 2021-07-23
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, in the case of lighting with a pattern showing directions such as arrows, there will be a problem that different directions are displayed

Method used

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  • Portable illumination device and illumination method
  • Portable illumination device and illumination method
  • Portable illumination device and illumination method

Examples

Experimental program
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Embodiment Construction

[0096] Hereinafter, one embodiment of the present invention will be described with reference to the drawings. It should be noted that, in the drawings attached to the description of the present application, for the sake of illustration and understanding, the scales, the aspect ratios, and the like are appropriately changed and exaggerated relative to the real objects.

[0097] In addition, terms such as "parallel", "orthogonal", and "same", values ​​of lengths and angles, etc. used in this specification for determining shapes or geometric conditions and their degrees are not limited by strict meanings. , including the extent to which the same function can be expected to be interpreted.

[0098] Figure 1 to Figure 14 It is a figure for demonstrating one embodiment. in, figure 1 and Figure 2D It is a perspective view or a vertical cross-sectional view each showing a portable lighting device. in addition, Figure 3A , Figure 4A , Figure 4B and Figure 4C A state in w...

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PUM

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Abstract

A portable illumination device (10) has a coherent light source (20), a shaping optical system (30) for shaping coherent light emitted from the coherent light source, and a diffraction optical element (40) for diffracting, towards a surface to be illuminated (IP), the coherent light that has been shaped by the shaping optical system. The diffraction optical element is rotatably supported. The surface to be illuminated is illuminated in a pattern corresponding to the diffraction pattern of the diffraction optical element.

Description

technical field [0001] The invention relates to a portable lighting device and a lighting method. Background technique [0002] For example, as disclosed in Patent Document 1 (JP2012-146621A), a lighting device using a diffractive optical element is known. By using a diffractive optical element, a surface to be irradiated can be illuminated with a desired pattern. [0003] On the other hand, the inventors of the present invention are studying the application of a lighting device using a diffractive optical element to a portable lighting device. The user carries the portable lighting device so that pattern lighting can be performed at a desired place. [0004] However, the diffraction pattern of the diffractive optical element is designed assuming a certain positional relationship between the diffractive optical element and the surface to be irradiated. On the other hand, when a portable lighting device is used, it may be preferable to perform pattern lighting on a wall or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03H1/08F21L4/00F21V23/04G09F19/18F21Y115/10F21Y115/30G02B5/18F21V14/06G09F13/00
CPCF21L4/00G02B5/18G03H1/08G09F13/00G09F19/18F21V14/065F21Y2115/30F21V17/02
Inventor 西尾俊平中津川夏织仓重牧夫石田一敏
Owner DAI NIPPON PRINTING CO LTD