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Sector-linear light source and motion sensing device adopting same

A fan-shaped surface and light source technology, which is applied in the direction of electric light source, light source fixation, lighting and heating equipment, etc., can solve the problems of intermittent light spots and large divergence angles, achieve strong continuity, stable light output, and improve the effect of irradiation

Active Publication Date: 2015-06-03
南京英田激光科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although such a light source has the advantages of small size and portability, the light spot is intermittent and the divergence angle in the short axis direction of the light spot is large, so there are many limitations in practical use.

Method used

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  • Sector-linear light source and motion sensing device adopting same
  • Sector-linear light source and motion sensing device adopting same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The concave-convex positive spherical lens 14, the convex-concave negative spherical lens 15, and the convex-concave positive spherical lens 16 of the first lens group adopt the optical glass preparations of H-ZK2, H-LAF6 and H-K9L respectively, and the second The concave-convex positive cylindrical lens 18, the concave-convex negative cylindrical lens 19, and the convex-concave positive cylindrical lens 20 of the lens group are respectively made of optical glass with grades H-K9L, H-LAF6, and H-ZK2. The meniscus cylindrical lens I 21 , meniscus cylindrical lens II 22 , and meniscus cylindrical lens III 23 of the three lens groups are respectively prepared from optical glass of the grades H-BAK10, H-LAK51 and H-ZK10.

[0055] Wherein, the R from the light source 13 is infinite, and the T=18.75mm from the light source 13 to the first surface of the concave-convex positive spherical lens 14;

[0056] R=-35.297mm on the first surface of the concave-convex positive spherica...

Embodiment 2

[0077]The glass grades are replaced with: the concave-convex positive spherical lens 14, the convex-concave negative spherical lens 15, and the convex-concave positive spherical lens 16 of the first lens group are prepared by optical glass with grades H-ZK7, F5 and H-LAK8A respectively , the concave-convex positive cylindrical lens 18, the concave-convex negative cylindrical lens 19, and the convex-concave positive cylindrical lens 20 of the second lens group are prepared from optical glass of H-LAK8A, F5 and H-ZK7 respectively, The meniscus cylindrical lens I 21 , the meniscus cylindrical lens II 22 , and the meniscus cylindrical lens III 23 of the third lens group are made of optical glass with grades H-K9, H-K51 and H-K9, respectively. In this embodiment, by adjusting the outgoing angle, linear light sources with widths of 100mm, 200mm, 300mm, 600mm, 900mm, 1200mm, 1500mm, 1800mm, 2100mm, 2400mm, and 2700mm can be formed. The light source has high brightness and high unifor...

Embodiment 3

[0079] The glass grades are replaced with: the concave-convex positive spherical lens 14, the convex-concave negative spherical lens 15, and the convex-concave positive spherical lens 16 of the first lens group are prepared by optical glass with grades H-ZK7, F5 and H-LAK8A respectively , the concave-convex positive cylindrical lens 18, the concave-convex negative cylindrical lens 19, and the convex-concave positive cylindrical lens 20 of the second lens group are prepared from optical glass of H-LAK8A, F5 and H-ZK7 respectively, The meniscus cylindrical lens I 21 , the meniscus cylindrical lens II 22 , and the meniscus cylindrical lens III 23 of the third lens group are made of optical glass with grades H-K10, H-K51 and H-K10, respectively. In this embodiment, by adjusting the exit angle, a linear light source with a width of 38mm, 76mm, 152mm, and 305mm can be formed, which is suitable for situations where a long and narrow field of view is required and the surface reflection...

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Abstract

The invention discloses a sector-linear light source and a motion sensing device adopting same. The optical structure of the light source comprises a linear light source, a concave-convex spherical positive lens, a convex-concave spherical negative lens, a convex-concave spherical positive lens, a diaphragm, a concave-convex cylindrical positive lens, a concave-convex cylindrical negative lens, a convex-concave cylindrical positive lens, a cylindrical meniscus lens I, a cylindrical meniscus lens II and a cylindrical meniscus lens III sequentially in the light emergence direction, wherein the emergence angle of the light source is 1-180 degrees, and the length of the luminous surface of the light source is greater than 1 mm. According to the sector-linear light source provided by the invention, the lenses arranged coaxially are used to adjust the light path form of the emitted light, and sector-linear light is output at the end; the sector-linear light source has the advantages of simple structure, light weight, stable light output power, strong continuity and adjustable emergence angle. The motion sensing device adopting the sector-linear light source realizes motion sensing for human or objects.

Description

technical field [0001] The invention relates to a light source and a motion sensing device using the light source, in particular to a sector-line light source and a motion sensing device using the light source. Background technique [0002] A linear light source can generally refer to a light emitting element having the following characteristics: forming a light spot in the shape of a word line. For example, compared to pinhole imaging, the light formed by light passing through a slit can be considered as a linear light source. Because of its good directivity and concentration performance, and good pointing and tracking functions, the linear light source is a light source device used for positioning in a large number of laser tracking electronic whiteboards and machine vision. [0003] In the current market, the grating type linear light source is generally used. Although such a light source has the advantages of small size and portability, the light spot is intermittent ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21S2/00F21V5/04F21V17/00
Inventor 周必方周子元蒋筱如刘进
Owner 南京英田激光科技有限公司