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Proportional scale capable of being visible under infrared light and preparation method of proportional scale

A scale and infrared light technology, which is applied in criminal investigation and optical fields, can solve problems such as impact, scale overexposure, and large light intensity gap, etc., to achieve the effect of ensuring image quality, reducing work discomfort, and improving accuracy

Active Publication Date: 2019-09-06
长春光吉科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some environments that require photography and evidence collection, the strong light of the flashlight will first have a strong impact on the light of the physical evidence, and it is even difficult to obtain evidence. Moreover, even if the light of the physical evidence at the scene is strong, there is a big gap between it and the light intensity of the flashlight. It will cause the light ratio to exceed the dynamic range of the camera, resulting in overexposure of the scale or underexposure of physical evidence. Therefore, it is urgent to develop a scale visible under infrared light and its preparation method

Method used

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  • Proportional scale capable of being visible under infrared light and preparation method of proportional scale

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preparation example Construction

[0027] The present invention provides a scale visible under infrared light and its preparation method. Infrared light is used to excite to ensure the dark field environment, and laser etching is used to ensure the depth and accuracy of the scale position. Please refer to figure 1 , a scale visible under infrared light, characterized in that it comprises: a scale body 100, a scale line 200 and a scale mark 300, the top of the front side wall of the scale body 100 evenly opens the scale line 200, so The front side wall of the scale body 100 is evenly provided with the scale mark 300, the scale mark 300 is located at the bottom of the scale line 200, and the scale line 200 and the scale mark 300 are formed on the scale body by laser etching technology. The scale position of the scale mark is etched on the front side wall of 100, and the depth of the scale position exceeds 0.5mm. Laser etching is used to ensure the depth and accuracy of the scale position. The inside of the scale p...

Embodiment approach 1

[0031] The steps of the preparation method of the scale visible under infrared light are as follows:

[0032] Step 1: Ball mill grinding: 0.1 parts of neodymium, 18 parts of yttrium to form rare earth elements, 15 parts of aluminum, 55 parts of oxygen and 8 parts of sulfur to form oxides or inorganic salts, rare earth elements and oxides or inorganic salts enter a molten state at 1000 Kelvin , the rare earth element is combined with the inorganic salt or oxide in the form of an ion complex, and the combination is ground by a ball mill at a speed of 500 revolutions per minute at room temperature to obtain powder particles with a diameter of 2 microns.

[0033] Step 2: Spectral analysis: Use the HR4000+ spectrometer of Ocean Optics to irradiate the powder particles with infrared light with a wavelength of 1500nm to emit weak visible light with a wavelength of 520nm.

[0034] Step 3: manual stirring: the powder particles are mixed with epoxy resin optical glue, the ratio of the e...

Embodiment approach 2

[0036] The steps of the preparation method of the scale visible under infrared light are as follows:

[0037] Step 1: Ball mill grinding: 0.5 parts of neodymium, 10 parts of yttrium form rare earth elements, 30 parts of aluminum, 40 parts of oxygen and 10 parts of sulfur form oxides or inorganic salts, and rare earth elements and oxides or inorganic salts enter a molten state at 1700 Kelvin , the rare earth element is combined with the inorganic salt or oxide in the form of an ion complex, and the combination is ground by a ball mill at room temperature at a speed of 50 revolutions per minute to obtain powder particles with a diameter of 50 microns.

[0038] Step 2: Spectral analysis: Use the HR4000+ spectrometer of Ocean Optics to irradiate the powder particles with infrared light with a wavelength of 900nm to emit weak visible light with a wavelength of 680nm.

[0039]Step 3: manual stirring: the powder particles are mixed with epoxy resin optical glue, the ratio of the epox...

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Abstract

The invention belongs to the technical field of optical and criminal investigation, and particularly relates to a proportional scale capable of being visible under infrared light. The proportional scale comprises a proportional scale body, scale lines and scale marks; the scale lines are uniformly arranged on the top of the front side wall of the proportional scale body, the scale marks are uniformly formed in the front side wall of the proportional scale body, and the scale marks are located at the bottoms of the scale marks. The proportional scale capable of being visible under the infraredlight comprises, by weight, 0.1-0.5 part of neodymium, 10-18 parts of yttrium, 15-30 parts of aluminum, 40-55 parts of oxygen and 8-10 parts of sulfur. A preparation method of the proportional scale capable of being visible under the infrared light includes following step that 1, grinding is carried out by using a ball mill, wherein the neodymium and the yttrium form a rare earth element, and thealuminum, the oxygen and the sulfur form an oxide or inorganic salt. The infrared light is used for excitation, so that a dark field environment is guaranteed; the comprehensive effect of the depth and accuracy of the scale position is guaranteed by means of laser etching.

Description

technical field [0001] The invention relates to the technical fields of optics and criminal investigation, in particular to a scale visible under infrared light and a preparation method thereof. Background technique [0002] In criminal technology, scales are often used to mark the size information of physical evidence. The extraction of physical evidence at criminal scenes is often performed in a dark field (that is, without light). Currently, conventional scales are used to display with light sources such as flashlights. The current criminal technology evidence collection scene often uses a scale to mark the size information of the physical evidence, but because many types of physical evidence require lasers and LED multi-bands to excite weaker physical evidence light, so the physical evidence collection scene often needs to arrange a dark field to eliminate Due to the interference of ambient light, it is difficult to see the markings on the scale in a dark field, so the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/84C09K11/02G01B3/00G01B5/00
CPCC09K11/7774C09K11/025G01B3/004G01B5/00
Inventor 王治洋黄旭张程承刘颂
Owner 长春光吉科技有限责任公司