Glass identification element, glass identifier and glass identification method

Abstract

The present invention relates to a glass identification element, a glass identifier, and a glass identification method. The glass identification element includes at least two prisms. The first prism and the second prism respectively have a first detection surface and a second detection surface parallel to the surface of the first glass to be identified, and are made of materials with a first refractive index and a second refractive index respectively. The first detection surface and the second detection surface are coplanar. When placed on the surface of the first glass to be identified, they are used to compare the fields of view formed when light is incident on the first detection surface and the second detection surface. When light is incident on the first detection surface, total internal reflection occurs, and when light is incident on the second detection surface, total internal reflection does not occur; or total internal reflection does not occur or total internal reflection occurs when light is incident on both the first detection surface and the second detection surface. According to the present invention, it is possible to more accurately judge the glass to be detected, and provide a glass identification element, a glass identifier, and a glass identification method that are easier to operate and have a wider application range.

Description

Technical Field

[0001] The present invention relates to a glass identification element, and more particularly to a glass identification element for quickly determining the type of glass. The present invention also relates to a glass identifier including the same. Background Art

[0002] In existing glass identifiers, a single prism is usually used as a glass identification element. By placing a single prism on the surface of the glass to be detected, the brightness change of the field of view at the interface between the single prism and the glass to be detected is observed, and then according to the refractive index of the prism, the approximate range of the refractive index of the glass to be detected is judged, so as to judge the type of the glass to be detected. However, in the existing glass identifier, there will be an incorrect judgment when judging a bright field of view or a dark field of view after the brightness of the light source changes or for those who are not familiar with the identifier, resulting in an incorrect judgment of the type of the glass to be detected. Moreover, generally, the existing glass identifier is only applicable to the identification between two types of glass.

[0003] Therefore, there is a need to provide a glass identifier and a glass identifier element that can more accurately judge the glass to be detected, are easier to operate, and have a wider application range. Summary of the Invention

[0004] The object of the present invention is to provide a glass identifier and a glass identifier element that can solve the above problems.

[0005] According to one aspect of the present invention, there is provided a glass identification element for identifying the type of glass, including at least two prisms, wherein:

[0006] A first prism having a first detection surface parallel to the surface of the first glass to be identified, and made of a material having a first refractive index; and

[0007] A second prism having a second detection surface parallel to the surface of the first glass to be identified, and made of a material having a second refractive index,

[0008] The first detection surface and the second detection surface of the first prism and the second prism are coplanar. When placed on the surface of the first glass to be identified, they are used to compare the fields of view formed when light is incident on the first detection surface and the second detection surface. Total internal reflection occurs when light is incident on the first detection surface, and total internal reflection does not occur when light is incident on the second detection surface; or total internal reflection does not occur when light is incident on the first detection surface and when light is incident on the second detection surface, or total internal reflection occurs in both cases.

[0009] The glass identification element according to the present invention can provide a clear judgment on the glass to be detected by providing multiple prisms with different refractive indices, so that a light field is formed at the interface between the detection surface of the glass identification element and the surface of the glass to be detected, and the observer observes fields of view with contrasting brightnesses.

[0010] Preferably, when the first detection surface and the second detection surface of the first prism and the second prism are placed on the first glass surface to be identified, total internal reflection occurs when light is incident on the first detection surface, and total internal reflection does not occur when light is incident on the second detection surface; when the first detection surface and the second detection surface of the first prism and the second prism are placed on the second glass surface to be identified, total internal reflection does not occur or total internal reflection occurs when light is incident on the first detection surface and when light is incident on the second detection surface.

[0011] A preferred solution of the present invention is to select the refractive index of the prism of the glass element to produce a bright and dark contrast field of view on one glass to be detected and not to produce a bright and dark contrast field of view on the other glass to be detected, that is, both are bright fields of view or both are dark fields of view, thereby clearly distinguishing the two glasses to be detected.

[0012] Preferably, the refractive index of the first glass to be identified is N a , and the refractive index of the second glass to be identified is N b , the refractive index of the first prism is N 1 , and the refractive index of the second prism is N 2 , then the refractive index N of the first prism 1 falls within [N a , N b , and the refractive index N of the second glass to be identified 2 falls outside [N a , N b .

[0013] The glass identification element according to the present invention can detect a variety of glasses by setting different refractive indices of the prisms and by comparing or distributing different bright and dark fields of view generated by placing the glass identification element on the surfaces of different types of glasses. At the same time, it can provide a relatively accurate refractive index judgment of different glasses according to the different refractive indices of the prisms of the glass identification element.

[0014] Preferably, the first prism and the second prism are arranged side by side.

[0015] Preferably, the glass identification element includes at least two first prisms, and the first prisms and the second prisms are arranged at intervals.

[0016] Preferably, the first prism and the second prism are both quadrangular prisms with the same shape and size.

[0017] Preferably, the first prism and the second prism are bonded together, the refractive index of the first prism is 1.51, the refractive index of the second prism is 1.479, and the first glass to be identified and the second glass to be identified are high borosilicate glass and ordinary float glass.

[0018] Preferably, the glass identification unit further includes a third prism, and the refractive index of the third prism is different from that of the first prism and the second prism.

[0019] According to another aspect of the present invention, there is provided a glass identifier, comprising:

[0020] A housing including a top and a bottom, the top including an observation window and the bottom including an opening;

[0021] According to the glass identification element described above, the detection surface of the prism is exposed from the bottom opening of the housing.

[0022] According to a third aspect of the present invention, there is provided a glass identifier for identifying glasses with different refractive indices, which includes a housing and at least two detection prisms provided in the housing, wherein,

[0023] The at least two detection prisms include a first detection prism having a first refractive index and a second detection prism having a second refractive index, and the first refractive index is different from the second refractive index;

[0024] A detection opening is provided on the housing, and the first detection prism and the second detection prism are arranged such that their respective bottom surfaces are exposed from the detection opening and form a coplanar detection surface; and

[0025] An observation window is further provided on the housing for observing the field of view formed by the reflection of light on the detection surface.

[0026] The glass identifier according to the present invention provides a specific light source, making the bright and dark fields provided by the glass identification element more obvious and non-confusing, and the glass identifier is more convenient to carry and use.

[0027] Preferably, the first detection prism and the second detection prism are arranged side by side.

[0028] Preferably, the glass identifier further includes a light projection system, and the light projection system includes a light source for projecting a light beam onto the detection surface at a predetermined angle.

[0029] Preferably, the at least two detection prisms further include a third detection prism having a third refractive index, and the third refractive index is different from the first refractive index and the second refractive index.

[0030] Preferably, the first detection prism, the second detection prism and the third detection prism are arranged side by side in order of the magnitudes of the first refractive index, the second refractive index and the third refractive index.

[0031] Preferably, the glass identifier further includes a first reflector and a second reflector disposed inside the housing. The first reflector is configured to reflect the light emitted by the light source onto the detection surfaces of at least two prisms, and the second reflector is configured to reflect the light totally reflected from the detection surfaces of at least two prisms onto the observation window.

[0032] The application of the first reflector and the second reflector further optimizes the optical path and facilitates the user's observation.

[0033] Preferably, the light source, the first reflector, the second reflector, and the glass identification element are integrated in an aluminum square tube to facilitate installation and define the optical path.

[0034] According to a fourth aspect of the present invention, there is provided a glass identification method for identifying a first glass having a refractive index N a and a second glass having a refractive index N b . The method includes:

[0035] providing a first detection prism having a first refractive index and a second detection prism having a second refractive index, wherein one of the first refractive index and the second refractive index is between [N a , N b , and the other falls outside [N a , N b , and the first detection prism and the second detection prism have coplanar detection surfaces;

[0036] placing the detection surfaces of the first detection prism and the second detection prism on the surface of the glass to be identified;

[0037] projecting light from one side of the first detection prism and the second detection prism onto the detection surface at a predetermined angle; and

[0038] observing the field of view formed by the reflection of the light on the detection surface, and identifying whether the glass to be identified belongs to the first glass or the second glass according to whether the field of view forms a light and dark contrast field of view.

[0039] Through the glass identification element, glass identifier, and glass identification method according to the present invention, it is possible to more accurately judge the glass to be detected, and provide a glass identification element, glass identifier, and glass identification method that are easier to operate and have a wider application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Other features, objects, and advantages of the present invention will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0041] Figure 1 is a perspective view of a preferred embodiment of a glass identifier according to the present invention;

[0042] Figure 2 is Figure 1 the front view of an embodiment of a glass identifier;

[0043] Figure 3 is the optical path diagram of the glass identification element of the glass identifier according to the present invention in different media;

[0044] Figure 4 is the perspective view of another embodiment of the glass identifier according to the present invention;

[0045] Figure 5 is the schematic diagram of different combinations of the glass identification elements according to the present invention. Detailed implementation manners

[0046] The following further describes the present application in detail with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related invention, rather than limiting the invention. Additionally, it should be noted that for the sake of description, only the parts related to the invention are shown in the drawings.

[0047] Figure 1 is the perspective view of a preferred embodiment of the glass identifier according to the present invention, Figure 2 is Figure 1 the front view of an embodiment of the glass identifier. Referring simultaneously to Figure 1 and Figure 2 , it can be seen from the figure that the glass identifier 1 includes a housing. For clearly showing the internal structure, Figure 1 the top of the housing is shown as opaque in , and the rest is shown as transparent, and the components on and in the housing are shown as opaque. The housing can be formed in two parts, including a housing bottom and a housing body, or can be formed in three parts, including a housing bottom, a housing body, and a housing top. An opening is provided at the housing bottom, and a prism base 7 corresponding to the opening of the housing bottom is installed at the housing bottom. Aluminum square tubes 9 are symmetrically installed on the prism base 7. The detection prism 5 and the comparison prism 6 are clamped between the aluminum square tubes 9 at positions corresponding to the opening of the prism base 7. The detection prism 5 and the comparison prism 6 are arranged side by side and are usually bonded together. A light source 4 is provided near one end of the detection prism 5 and the comparison prism 6. In this embodiment, the light source 4 is supported on the corresponding ends of the aluminum square tubes 9. Reflective mirrors 8 and 10 (refer to Figure 2 ) are respectively arranged outside both ends of the detection prism 5 and the comparison prism 6 to direct the light emitted by the light source 4 along Figure 2The optical path 11 shown in the figure is reflected to one end of the detection prism 5 and the comparison prism 6, and is incident on the bottom surfaces of the detection prism 5 and the comparison prism 6, that is, at the interface between the detection surface and the glass to be detected. Then it is reflected by this interface to the mirror 8, and then reflected by the mirror 8 to the observation window 2 provided at the top of the housing for the examiner to observe. For the convenience of observation, the observation window 2 is usually provided at the top of the housing. A power switch 3 is also provided at the top of the housing, and the voltage switch 3 can be set at any convenient position on the housing.

[0048] According to Figure 1 and 2 The embodiment of the glass identifier of the present invention shown also includes a power supply (not shown), which can be an external power supply or an internal power supply for convenient use.

[0049] According to Figure 1 and 2 The detection prism 5 and the comparison prism 6 shown can also be referred to as the glass identification elements of the glass identifier of the present invention. The glass identifier identifies the type of glass through these glass identification elements. The structure and function of the glass identification elements will be described in detail below with reference to Figure 3 The structure and function of the glass identification elements will be described in detail below with reference to

[0050] Figure 3 Taking the detection media as air 10, borosilicate glass 11, and ordinary float glass 12 as examples respectively to illustrate the function of the glass identification elements.

[0051] To identify the borosilicate glass 11 and the ordinary float glass 12, usually the refractive index of the material for manufacturing the detection prism 5 is selected so that when light is incident on the interface between the detection surface of the detection prism 5 and the surface of the borosilicate glass 11, at least part of the light undergoes total reflection. The refractive index of the material for manufacturing the comparison prism 6 is selected so that when light is incident on the interface between the detection surface of the comparison prism 6 and the surface of the borosilicate glass 11, total reflection does not occur. Further, the refractive index of the material for manufacturing the detection prism 5 can be selected so that when light is incident on the interface between the detection surface of the detection prism 5 and the surface of the float glass 12, total reflection does not occur. The refractive index of the material for manufacturing the comparison prism 6 is selected so that when light is incident on the interface between the detection surface of the comparison prism 6 and the surface of the float glass 12, total reflection does not occur.

[0052] Taking the glass to be detected as borosilicate glass and ordinary float glass as examples respectively. The refractive index (Nb) of the borosilicate glass is 1.479, and the refractive index (Nf) of the ordinary float glass is 1.52.

[0053] When a detection prism with a refractive index (Np) of 1.51 is placed on the surface of borosilicate glass as an incident coupling prism, light with a sine of the incident angle greater than 1.479 / 1.51 = 0.98 undergoes total internal reflection at the prism and borosilicate glass surface, and light with a sine of the incident angle less than 1.479 / 1.51 = 0.98 refracts into the glass at the prism and borosilicate glass surface. Near the total internal reflection angle, a bright-dark boundary can be seen, and there is an obvious bright field of view.

[0054] When a prism with a refractive index (Np) of 1.51 is placed on the surface of ordinary float glass as an incident coupling prism, since the refractive index of the prism is less than that of ordinary float glass, light refracts into the glass at the prism and ordinary float glass surface. A bright field of view cannot be seen.

[0055] Using borosilicate glass with a refractive index (Nb) of 1.479 as a comparison prism, no bright field of view can be observed on either borosilicate glass or ordinary float glass with the comparison prism.

[0056] Return to the reference Figure 3 in the view, in the view, a detection prism 5 with a refractive index (Np) of 1.51 and a comparison prism 6 with a refractive index (Nb) of 1.479 are used. The upper view is a schematic diagram of the optical path when the detection prism 5 and the comparison prism 6 are placed in air 10. The refractive index of air is 1. Light with a sine of the incident angle greater than 1 / 1.51 and 1 / 1.479 undergoes total internal reflection at the interface between the detection surfaces of the detection prism 5 and the comparison prism 6 and air. Therefore, in the case of the upper view, a bright field of view can be observed on both the detection prism 5 and the comparison prism 6; the middle view is a schematic diagram of the optical path when the detection prism 5 and the comparison prism 6 are placed on the surface of borosilicate glass 11. Light with a sine of the incident angle greater than 1.51 / 1.479 undergoes total internal reflection at the interface between the detection surface of the detection prism 5 and the surface of borosilicate glass 11, but the light does not undergo total internal reflection at the interface between the detection surface of the comparison prism 6 and the surface of borosilicate glass 11, but instead the light refracts into borosilicate glass 11. Therefore, in the case of the middle view, a bright field of view can be observed on the detection prism 5, while a dark field of view can be observed on the comparison prism 6; the lower view is a schematic diagram of the optical path when the detection prism 5 and the comparison prism 6 are placed on ordinary float glass 12. The light does not undergo total internal reflection at the interface between the detection surface of the detection prism 5 and the surface of float glass 12, nor does it undergo total internal reflection at the interface between the detection surface of the comparison prism 6 and the surface of float glass 12, but instead the light refracts into float glass 12. Therefore, in the case of the lower view, a dark field of view can be observed on both the detection prism 5 and the comparison prism 6.

[0057] Figure 4Stereoscopic view of another embodiment of the glass identifier according to the present invention. In this embodiment, the identifier 1 may be composed only of a housing, a detection prism 5 and a comparison prism 6 mounted at the bottom of the housing. The top of the housing is provided with a completely open observation window 2. In theory, the function of the identifier 1 can also be realized using natural light. In order to increase the light brightness, the housing can be made transparent.

[0058] The present invention can reduce or increase elements based on the preferred embodiment shown in Figure 1 and 2 as well as the embodiment shown in Figure 4 For example, in the embodiment shown in Figure 4 a light source and a power supply can be added. The light source can be a light source with a specific angular range, such as an LED lamp. The incident light angle can also be limited by further adding a reflector and a diaphragm. It is even possible to implement the glass identifier according to the present invention using only the glass identification elements including the detection prism 5 and the comparison prism 6. All possible embodiments that can be realized according to the principle of the present invention are within the protection scope of the present invention.

[0059] Figure 1 、 Figure 2 and Figure 4 The glass identification elements shown in include only two prisms, the detection prism 5 and the comparison prism 6. The glass identification elements according to the present invention can also include multiple prisms. The multiple prisms can be repetitions of the detection prism 5 or the comparison prism 6, or prisms with a refractive index different from that of the detection prism 5 or the detection prism 6.

[0060] Figure 5 are schematic diagrams of different combinations of the glass identification elements according to the present invention. Hereinafter, an example in which the glass identification elements include three prisms will be described in detail with reference to Figure 5

[0061] Figure 5 In Figure a of , it shows a case including two detection prisms 5 and one comparison prism 6, and Figure b shows a case including one detection prism 5 and two comparison prisms 6. The bright field and the dark field of the glass identification elements in Figure a and Figure b are exactly the same as those in the case of including only one detection prism 5 and one comparison prism 6. The difference is that in the cases of Figure a and Figure b, for the situations where there is a dark field sandwiched between two bright fields, a bright field sandwiched between two dark fields, and all dark fields, the contrast can be further improved.

[0062] Figure 5Figure c in [reference] shows a case including three prisms 5, 5' and 6 with different refractive indices. Each prism may produce a bright field of view, bright fields of view with different brightnesses (depending on the refractive index of each prism, the refractive index of the glass being detected, and the amount of light that finally undergoes total internal reflection due to the angle setting of the incident light), and a dark field of view when detecting different types of glass. Such a setting may have a wider range of applications. For example, it may be able to identify more types of glass. By the combination of the bright field of view and the dark field of view produced by each prism when identifying the type of glass, the refractive index of the glass to be identified can be determined within a relatively accurate range. Even by setting the refractive indices of each prism to increase or decrease with uniform intervals, the glass identification element can be set as a refractive index scale.

[0063] Figure 5 In the cases of Figures a, b, and c in [reference], the number of prisms can be extended to n, where n is an integer greater than 1. In the case of Figure c, if the number of prisms is n, the refractive indices of any two are N 1 , N n , then the refractive index N a of the first glass to be identified that can be identified by this glass identification element and the refractive index N b of the nth glass to be identified, one of them falls within [N 1 , N n , and the other falls outside [N 1 , N n . Conversely, if the refractive index of the first glass to be identified is known to be N a , and the refractive index of the nth glass to be identified is N b , then the refractive index N 1 of the first prism is selected to be between [N a , N b , and the refractive index N 1 of the second prism is selected to be outside [N a , N b . That is to say, two prisms in the glass identification element can form a contrast between a bright field of view and a dark field of view on one of the first glass to be identified and the nth glass to be identified, and form a field of view with the same brightness on the other of the first glass to be identified and the nth glass to be identified. The first glass to be identified and the nth glass to be identified are distinguished by the contrast of the fields of view.

[0064] The prisms in the above-described embodiments can be any prisms, such as triangular prisms, quadrangular prisms, pentagonal prisms, etc.

[0065] It should be noted that the described embodiments are merely exemplary and should not be construed as limiting the present invention. The features in multiple embodiments can be combined for use to obtain more embodiments of the present invention. The scope of the present invention is only defined by the appended claims. Various modifications and improvements can be made to the described embodiments without departing from the scope of the present invention.

Claims

1. A glass identification element for identifying the type of glass, comprising at least two prisms, Wherein: The first prism has a first detection surface parallel to the surface of the first glass to be identified and is made of a material with a first refractive index; And The second prism has a second detection surface parallel to the surface of the first glass to be identified and is made of a material with a second refractive index. The first detection surface and the second detection surface of the first prism and the second prism are coplanar. When placed on the surface of the first glass to be identified, they are used to compare the fields of view formed when light is incident on the first detection surface and the second detection surface at a predetermined angle. Total internal reflection occurs when light is incident on the first detection surface, and total internal reflection does not occur when light is incident on the second detection surface; or total internal reflection does not occur or total internal reflection occurs when light is incident on the first detection surface at a predetermined angle and when light is incident on the second detection surface.

2. The glass identification element according to claim 1, Wherein, When the first detection surface and the second detection surface of the first prism and the second prism are placed on the surface of the first glass to be identified, total internal reflection occurs when light is incident on the first detection surface, and total internal reflection does not occur when light is incident on the second detection surface; when the first detection surface and the second detection surface of the first prism and the second prism are placed on the surface of the second glass to be identified, total internal reflection does not occur or total internal reflection occurs when light is incident on the first detection surface and when light is incident on the second detection surface.

3. The glass identification element according to claim 2, Wherein, The refractive index of the first glass to be identified is N a , and the refractive index of the second glass to be identified is N b , the refractive index of the first prism is N 1 , the refractive index of the second prism is N 2 , then the refractive index N of the first prism 1 falls within [N a , N b . The refractive index N of the second glass to be identified 2 falls outside [N a , N b .

4. The glass identification element according to any one of claims 1 to 3, Wherein, The first prism and the second prism are arranged side by side.

5. The glass identification element according to claim 4, Wherein, The glass identification element includes at least two first prisms, and the first prisms and the second prisms are arranged at intervals.

6. The glass identification element according to any one of claims 1 to 3, Wherein, Both the first prism and the second prism are quadrangular prisms with the same shape and size.

7. The glass identification element according to claim 6, Wherein, The first prism and the second prism are bonded together. The refractive index of the first prism is 1.51, the refractive index of the second prism is 1.479, and the first glass to be identified and the second glass to be identified are high borosilicate glass and ordinary float glass.

8. The glass identification element according to claim 7, Wherein, The glass identification element further includes a third prism, and the refractive index of the third prism is different from that of the first prism and the second prism.

9. A glass identifier, Comprising: A housing including a top and a bottom. The top includes an observation window, and the bottom includes an opening; The glass identification element according to any one of claims 1 - 7, and the detection surface of its prism is exposed from the bottom opening of the housing.

10. A glass identifier for identifying glasses with different refractive indices, which includes a housing and at least two detection prisms arranged in the housing. Wherein, The at least two detection prisms include a first detection prism with a first refractive index and a second detection prism with a second refractive index, and the first refractive index is different from the second refractive index; The housing is provided with a detection opening, and the first detection prism and the second detection prism are arranged such that their respective bottom surfaces are exposed from the detection opening and form a coplanar detection surface; and The housing is further provided with an observation window for observing the visual field formed by light reflected at a predetermined angle on the detection surface.

11. The glass identifier according to claim 10,[ wherein,[ The first detection prism and the second detection prism are arranged side by side.

12. The glass identifier according to claim 11, further comprising a light projection system, the light projection system including a light source for projecting a light beam onto the detection surface at a predetermined angle.

13. The glass identifier according to claim 10,[ wherein,[ The at least two detection prisms further include a third detection prism having a third refractive index, the third refractive index being different from the first refractive index and the second refractive index.

14. The glass identifier according to claim 13,[ wherein,[ The first detection prism, the second detection prism and the third detection prism are arranged side by side in order of the magnitudes of the first refractive index, the second refractive index and the third refractive index.

15. The glass identifier according to any one of claims 10 to 14,[ wherein,[ The glass identifier further includes a first mirror and a second mirror disposed in the housing. The first mirror is used to reflect the light emitted by the light source to the detection surface of at least two prisms, and the second mirror is used to reflect the light totally reflected from the detection surface of at least two prisms to the observation window.

16. The glass identifier according to claim 15,[ wherein,[ The light source, the first mirror, the second mirror and the glass identification element are integrated in an aluminum square tube to facilitate installation and define the optical path.

17. A method for glass identification, which is used to identify a first glass with a refractive index N a and a second glass with a refractive index N b wherein the method including: Provided are a first detection prism having a first refractive index and a second detection prism having a second refractive index, wherein the magnitude of one of the first refractive index and the second refractive index is between [N a , N b , and the other falls outside [N a , N b , and the first detection prism and the second detection prism have coplanar detection surfaces; Placing the detection surfaces of the first detection prism and the second detection prism on the surface of the glass to be identified; Projecting light from one side of the first detection prism and the second detection prism onto the detection surface at a predetermined angle; and Observing the visual field formed by the reflection of light on the detection surface, and identifying whether the glass to be identified belongs to the first glass or the second glass according to whether the visual field forms a light and dark contrast visual field.

Images