TWM589277U - Spectrometer, positioning structure of optical component and optical element thereof - Google Patents

Abstract

A positioning structure of optical component and optical element thereof suitable for a spectrometer is provided. The positioning structure of the optical component including a first positioning portion, a second positioning portion, a first positioning pin and a second positioning pin is provided. The first positioning portion has a first positioning circular hole and a positioning elongated hole. A long axial extending line of the positioning elongated hole is through the first positioning circular hole. The second positioning portion has a second positioning circular hole and a third positioning circular hole. The first positioning pin is just fit and inserted in the first positioning circular hole and the second positioning circular hole. The second positioning pin is just fit a short axis dimension of the positioning elongated hole and the third positioning hole and is inserted in the positioning elongated hole and the third positioning circular hole. Furthermore, the spectrometer is also provided.

Description

Spectrometer, optical component and positioning structure of optical element

This creation is about a positioning structure, and especially about a positioning structure of a spectrometer.

A spectrometer is a detection instrument used to analyze the composition and characteristics of substances. By using the difference in optical characteristics such as reflection, absorption or penetration of different frequency bands of light by a substance, when the spectrometer receives the light reflected from the substance or the light penetrating the substance, the light of complex components is decomposed into spectral lines and arranged into a spectrum. Since different substances will show spectra corresponding to their characteristics, it is possible to identify the composition and characteristics of substances.

Since the spectrometer needs an accurate optical system to effectively display the spectrum, the tolerances in the manufacturing process, as well as the influence of the use environment such as temperature difference, are factors that must be carefully considered in the design or manufacture of the spectrometer.

This creation proposes a positioning structure for spectrometer, optical components and their optical components, which can be assembled and positioned more accurately, and can reduce the impact of manufacturing tolerances on assembly.

The present invention provides a spectrometer including a plurality of optical components, a substrate, at least one first positioning pin and at least one second positioning pin. The aforementioned multiple optical components are provided on the substrate. One of the optical component and the substrate has a first positioning round hole and a positioning long hole, and the other of the optical component and the substrate has at least one second positioning round hole and at least a third positioning round hole. A long axis extension line of the positioning long hole passes through the first positioning round hole. The second positioning round hole corresponds to the first positioning round hole in position, and the third positioning round hole corresponds to the positioning long hole in position. The first positioning pin is adapted and inserted into the first positioning round hole and the second positioning round hole. The second positioning pin is adapted to a short axis size of the positioning long hole and the third positioning round hole, and is inserted into the positioning long hole and the third positioning round hole.

In an embodiment of the present invention, the size specifications of the first positioning pin and the second positioning pin are the same, and the inner diameter and short axis size of the first positioning round hole, the second positioning round hole and the third positioning round hole are substantially It is the same as the outer diameter of the first positioning pin and the second positioning pin.

In an embodiment of the present invention, one of the first positioning round hole and the positioning long hole penetrates a base of the optical component.

In an embodiment of the present creation, the height of the first positioning pin protruding from the substrate is greater than the height of the second positioning pin protruding from the substrate.

In an embodiment of the invention, the center line of the first positioning round hole and the positioning long hole is parallel to an optical reference plane of the optical component.

In an embodiment of the present invention, the projection of the center line of the first positioning round hole and the positioning long hole on the optical component is on an optical reference plane of the optical component.

In an embodiment of the present invention, the first positioning circular hole is located at a projection position of an optical center of the optical component on the substrate or a base of the optical component.

In an embodiment of the present invention, the distance between the center of the first positioning circular hole and the positioning long hole is greater than 1/3 of the length of a base of the optical component.

In an embodiment of the present invention, the spectrometer further includes at least one fixing member passing through and fixing the relative positions of the first positioning portion and the second positioning portion.

In an embodiment of the present invention, at least one of the first positioning pin and the second positioning pin is a screw pin.

In an embodiment of the present invention, at least one of the first positioning round hole, the positioning long hole, the second positioning round hole, and the third positioning round hole has a groove for holding a fixing glue.

In an embodiment of the present invention, the positioning long hole has a rectangular segment and two semi-circular segments, wherein the rectangular segment is connected between the two semi-circular segments, and the size of the rectangular segment in the width direction of the positioning long hole is The diameter of the circular segment is the same as the short axis size.

In an embodiment of the present invention, the aforementioned plurality of optical components include an optical input portion, a collimating lens, a grating, a focusing mirror, and an image sensor arranged optically in sequence, and the optical input portion, collimating Both the straight mirror and the grating have a first positioning round hole and a positioning long hole. The size specifications of the first positioning pin and the second positioning pin are the same. One of the first positioning round hole and the positioning long hole penetrates a base of the light input part, the collimator lens, and the grating. The height of the first positioning pin protruding from the substrate is greater than the height of the second positioning pin protruding from the substrate. The projection of the center line connecting the individual first positioning circular hole and the positioning long hole is located on an optical reference plane of the light input part, the collimator lens, and the grating. The first positioning circular hole is located at the projection position of an optical center of the light input part, the collimator lens, and the grating on the base plate or a base of the individual optical component. The distance between the center of the individual first positioning circular hole and the positioning long hole is greater than 1/3 of the length of a single base of the light input portion, the collimator lens, and the grating. The side wall of at least one of the first positioning round hole, the positioning long hole, the second positioning round hole and the third positioning round hole has a groove for holding the fixing glue. The positioning long hole has a rectangular section and two semicircular sections, wherein the rectangular section is connected between the two semicircular sections, and the dimension of the rectangular section in the width direction of the positioning long hole is the same as the diameter of the two semicircular sections.

The invention further provides a positioning structure of an optical component, which is suitable for a spectrometer and includes a first positioning part, a second positioning part, a first positioning pin, and a second positioning pin. The first positioning part has a first positioning round hole and a positioning long hole. A long axis extension line of the positioning long hole passes through the first positioning round hole. The second positioning part has a second positioning round hole and a third positioning round hole. The second positioning round hole corresponds to the first positioning round hole in position, and the third positioning round hole corresponds to the positioning long hole in position. The first positioning pin is adapted and inserted into the first positioning round hole and the second positioning round hole. The second positioning pin is adapted to a short axis size of the positioning long hole and the third positioning round hole, and is inserted into the positioning long hole and the third positioning round hole.

In an embodiment of the present invention, the size specifications of the first positioning pin and the second positioning pin are the same, and the inner diameter and short axis size of the first positioning round hole, the second positioning round hole and the third positioning round hole are substantially It is the same as the outer diameter of the first positioning pin and the second positioning pin.

In an embodiment of the present invention, one of the first positioning round hole and the positioning long hole penetrates the first positioning portion.

In an embodiment of the present invention, the height of the first positioning pin protruding from the base plate is greater than the height of the second positioning pin protruding from the second positioning portion.

In an embodiment of the invention, the center line of the first positioning round hole and the positioning long hole is parallel to an optical reference plane of the optical component.

In an embodiment of the present invention, the projection of the center line of the first positioning round hole and the positioning long hole on the optical component is on an optical reference plane of the optical component.

In an embodiment of the present invention, the first positioning circular hole is located at a projection position of an optical center of the optical component on the second positioning portion.

In an embodiment of the present invention, the distance between the center of the first positioning circular hole and the positioning long hole is greater than 1/3 of the length of a base of the optical component.

In an embodiment of the present invention, the positioning structure of the optical component further includes at least one fixing member passing through and fixing the relative positions of the first positioning portion and the second positioning portion.

In an embodiment of the present invention, at least one of the first positioning pin and the second positioning pin is a screw pin.

In an embodiment of the present invention, at least one of the first positioning round hole, the positioning long hole, the second positioning round hole, and the third positioning round hole has a groove for holding a fixing glue.

In an embodiment of the present invention, the positioning long hole has a rectangular segment and two semi-circular segments, wherein the rectangular segment is connected between the two semi-circular segments, and the size of the rectangular segment in the width direction of the positioning long hole is The diameter of the circular segment is the same as the short axis size.

This creation also provides a positioning structure of optical components, which is suitable for a substrate of a spectrometer. The positioning structure of the optical element includes a base connecting the optical element and the substrate. The base includes a first positioning part, a first positioning pin and a second positioning pin. The first positioning part has a first positioning hole and a second positioning hole. The substrate includes a third positioning hole and a fourth positioning hole corresponding to the first positioning hole and the second positioning hole. Three of the first positioning hole, the second positioning hole, the third positioning hole and the fourth positioning hole are positioning round holes. One of the first positioning hole, the second positioning hole, the third positioning hole and the fourth positioning hole is a positioning long hole. A long axis extension line of the positioning long hole passes through the center of one of the three positioning round holes. The size of a short axis of the positioning long hole corresponds to the diameter of one of the three positioning round holes. The first positioning pin is adapted and inserted into the first positioning hole and the third positioning hole. The second positioning pin is adapted and inserted into the second positioning hole and the fourth positioning hole.

In an embodiment of the present invention, one of the first positioning pin and the second positioning pin is adapted to the positioning slot.

In an embodiment of the present invention, the size specifications of the first positioning pin and the second positioning pin are the same, and the inner diameter and short axis size of the first positioning round hole, the second positioning round hole and the third positioning round hole are substantially It is the same as the outer diameter of the first positioning pin and the second positioning pin.

In an embodiment of the present invention, one of the first positioning round hole and the positioning long hole penetrates the first positioning portion.

In an embodiment of the present creation, the height of the first positioning pin protruding from the substrate is greater than the height of the second positioning pin protruding from the substrate.

In an embodiment of the present invention, the center line of the first positioning round hole and the positioning long hole is parallel to an optical reference plane of the optical element.

In an embodiment of the present invention, in the positioning structure of the optical element, the projection of the center line of the first positioning round hole and the positioning long hole is located on an optical reference plane of the optical element.

In an embodiment of the present invention, the first positioning round hole is located at a projection position of an optical center of the optical element on the substrate.

In an embodiment of the present invention, the distance between the center of the first positioning round hole and the positioning long hole is greater than 1/3 of the length of a base of the base.

In an embodiment of the present invention, the positioning structure of the optical element further includes at least one fixing member passing through and fixing the relative position of the base and the substrate.

In an embodiment of the present invention, at least one of the first positioning pin and the second positioning pin is a screw pin.

In an embodiment of the present invention, at least one of the first positioning round hole, the positioning long hole, the second positioning round hole, and the third positioning round hole has a groove for holding a fixing glue.

In an embodiment of the present invention, the positioning long hole has a rectangular segment and two semi-circular segments, wherein the rectangular segment is connected between the two semi-circular segments, and the size of the rectangular segment in the width direction of the positioning long hole is The diameters of the circular segments are substantially the same as the short axis dimensions.

In an embodiment of the present invention, the first positioning pin and the second positioning pin are a rectangular parallelepiped or a cylinder.

In the positioning structure of the spectrometer, the optical component and the optical element of the embodiment of the present invention, since the first positioning pin is fitted and inserted into the first positioning round hole and the second positioning round hole, the three of them can be accurately determined Relative position, and can accurately position the optical component. Furthermore, the second positioning pin is adapted to a short axis size of the positioning long hole and the third positioning round hole, and is inserted into the positioning long hole and the third positioning round hole. Therefore, allowing the second positioning pin to be offset in the direction of its long axis extension line through the positioning long hole can effectively absorb manufacturing tolerances.

In order to make the above-mentioned features and advantages of the present invention more obvious and understandable, the following examples are given in detail, together with the attached drawings for detailed description as follows.

FIG. 1 is a perspective view of a spectrometer of an embodiment, and FIG. 2A is a partial top view of the spectrometer of the embodiment of FIG. 1. 1 and 2A, the spectrometer 100 includes a plurality of optical components, a substrate 160, at least one first positioning pin P1 and at least one second positioning pin P2. In this embodiment, the optical component is, for example, an optical input portion 110, a collimating mirror 120, a grating 130, a focusing mirror 140, and an image sensor 150, which are optically arranged in order. The substrate 160 is provided with optical components, and the material is, for example, rigid materials such as stainless steel and aluminum, but it is not limited thereto. In addition, the substrate 160 can also be directly used as a part of the casing (not shown) of the spectrometer 100.

For convenience of explanation, the light input portion 110 will be used as the first positioning portion (referring to the component having the first positioning round hole C1 and the positioning long hole S as shown in FIG. 3A ), and the substrate 160 as the second positioning portion (referring to having The components of the second positioning circular hole C2 and the third positioning circular hole C3 as shown in FIG. 3A illustrate the positioning structure of the optical component in the spectrometer 100, but in another embodiment not shown, the substrate 160 can also be used as The first positioning portion, which uses the optical component as the second positioning portion, is not limited thereto. The light input section 110 includes an optical element 112, a base 114, and at least one fixing member 116. The optical element 112 and the base 114 may be integrally formed, or the optical element 112 may be assembled to the base 114 through assembly. The fixing member 116 is, for example, one screw on each side of the base 114, but other components for fixing such as rivets may also be used, and the number may be one or more. The optical element 112 is connected to the base 114 and passes through the substrate 160 through the fixing member 116 to fix the base 114 to the substrate 160 to fix the relative position of the light input portion 110 and the substrate 160. The optical element 112 may include an optical connector (such as SMA905) and a slit unit to guide the light to be measured into the spectrometer 100 via an optical fiber (not shown).

FIG. 3A is a sectional view of the spectrometer of FIG. 2A taken along line A-A. Please refer to FIGS. 2A and 3A, the light input part 110 has a first positioning circular hole C1 and a positioning long hole S. A long axis extension line L of the positioning long hole S passes through the first positioning round hole C1 and can pass through the center of the first positioning round hole C1. The substrate 160 has at least one second positioning circular hole C2 and at least one third positioning circular hole C3. The second positioning round hole C2 corresponds in position to the first positioning round hole C1, and the third positioning round hole C3 corresponds in position to the positioning long hole S. The outer diameter of the first positioning pin P1 is substantially the same as the inner diameter of the first positioning circular hole C1 and the second positioning circular hole C2, so as to fit and be inserted into the first positioning circular hole C1 and the second positioning circular hole C2. The outer diameter of the second positioning pin P2 is approximately the same as the size of a short axis of the positioning long hole S and the inner diameter of the third positioning round hole C3 to match the short axis size of the positioning long hole S and the third positioning round hole C3, And it is inserted into the positioning long hole S and the third positioning round hole C3. That is, when the light input portion 110 is assembled on the substrate 160, the second positioning round hole C2 communicates with the first positioning round hole C1, and its size allows the first positioning pin P1 to be inserted.

FIG. 5 is a partial enlarged view of the positioning long hole and the first positioning pin of FIG. 2A. Please refer to FIG. 5. The positioning long hole S has a rectangular section S1 and two semicircular sections S2. The rectangular section S1 is connected between the two semicircular sections S2. The dimension of the rectangular segment S1 in the width direction of the positioning long hole S and the diameter of the two semicircular segments S2 are the same as the short axis dimension W3, and are substantially the same as the outer diameter W4 of the second positioning pin P2. Although the shape of the positioning long hole S in this embodiment is as described above, in another embodiment not shown, the shape of the positioning long hole S has at least a rectangular segment S1, which can provide the second positioning pin P2 extending on the long axis The line L can be offset.

3B is an exploded cross-sectional view of the spectrometer of FIG. 2A along line A-A. The positioning and assembling relationship between the light input portion 110 and the substrate 160 will be described below with reference to FIGS. 3A and 3B. Please refer to FIG. 3B first, the first positioning pin P1 and the second positioning pin P2 can be inserted into the second positioning round hole C2 and the third positioning round hole C3 respectively. In this embodiment, the first positioning pin P1 and the second positioning pin P2 have the same size (length, outer diameter), and can share the same material, reducing the trouble of preparing materials. The depth of the second positioning circular hole C2 is shallower than the depth of the third positioning circular hole C3 so that the height H1 of the first positioning pin P1 protruding from the substrate 160 is greater than the height H2 of the second positioning pin P2 protruding from the substrate 160. Of course, those with ordinary knowledge in the art can also understand that in another embodiment not shown, the depth of the second positioning circular hole C2 and the third positioning circular hole C3 can also be the same, and the first positioning with different lengths is selected The pin P1 and the second positioning pin P2 can also achieve the effect that the height H1 of the first positioning pin P1 protruding from the substrate 160 is greater than the height H2 of the second positioning pin P2 protruding from the substrate 160.

Next, the first positioning circular hole C1 is aligned with the first positioning pin P1, and the light input portion 110 moves along the direction D3 (downward direction in FIG. 3B) toward the substrate 160, so that the first positioning pin P1 enters the first positioning Round hole C1. At this time, the positioning long hole S has not yet been aligned with the second positioning pin P2. Furthermore, the light input portion 110 may rotate in the direction D1 (see the clockwise and counterclockwise directions in FIG. 2A) with the first positioning pin P1 as the center of the circle until the positioning slot S is aligned with the second positioning pin P2. After the positioning long hole S is aligned with the second positioning pin P2, the light input portion 110 can further move toward the substrate 160 along the direction D3, so that the second positioning pin P2 enters and is inserted into the positioning long hole S. At this time, the second positioning pin P2 is limited by the size of the short axis of the positioning long hole S, thereby achieving the technical effect of restricting the rotation of the light input section 110 relative to the substrate 160. In this way, the positioning operation can be completed, and then the fixing member 116 can be fixed to the substrate 160 through the base 114 to complete the assembly of the light input unit 110 on the substrate 160.

It is worth mentioning that, since the first positioning pin P1 is adapted and arranged between the first positioning round hole C1 and the second positioning round hole C2, the relative positions of the three can be accurately determined, and the light can be accurately positioned The positional relationship between the input unit 110 and the substrate 160. Furthermore, since the second positioning pin P2 fits a short axis size of the positioning long hole S and the third positioning round hole C3. Therefore, allowing the second positioning pin P2 to be offset in the direction of its long axis extension line L through the positioning long hole S can effectively absorb the manufacturing tolerance between the base 114 and the substrate 160. Moreover, after the positioning is completed, the second positioning pin P2 will also be limited by the size of a short axis of the positioning long hole S, so it will not rotate and achieve the effect of accurate positioning.

In addition, in this embodiment, the positioning long hole S penetrates the base 114, so after the first positioning pin P1 is inserted into the second positioning round hole C2, the second positioning pin P2 does not need to be inserted into the third positioning round hole C3 first , As long as the base 114 rotates relative to the substrate 160 until the positioning long hole S and the third positioning round hole C3 are aligned, then insert the second positioning pin P2 from above the base 114 into the positioning long hole S and the third positioning round hole C3 can complete the positioning. That is to say, this implementation can provide two positioning and assembly methods at the same time, but those with ordinary knowledge in the art can adjust the design according to the requirements, which is not limited to this. For example, in another embodiment not shown, the positioning long hole S may also be a blind hole. Moreover, the design may be changed to form a first positioning circular hole C1 and a positioning long hole S on the substrate 160, and a second positioning circular hole C2 and a third positioning circular hole C3 are formed on the base 114.

In addition, at least one of the first positioning pin P1 and the second positioning pin P2 can also be selectively changed to a screw pin, which passes through the base 114 and is locked to the base plate 160. In this way, the fixing member 116 can be replaced to provide a fixed technical effect, and the fixing member 116 can be omitted. The side wall of at least one of the first positioning round hole C1, the positioning long hole S, the second positioning round hole C2 and the third positioning round hole C3 may also have a groove (not shown) for holding a fixing glue, so that When the first positioning pin P1 or the second positioning pin P2 is fixed by glue filling, the technical effect of avoiding glue overflow can be achieved.

Further, please refer to FIG. 2A again, the first positioning circular hole C1 may be located or substantially located at a projection position of an optical center O of the light input portion 110 on the base 114, and the first positioning of the light input portion 110 The projection of the center line of the circular hole C1 and the positioning long hole S (the direction of the long axis extension line L) may also be located on an optical reference plane of the light input portion 110. Since the first positioning circular hole C1 is the positioning center of the light input portion 110 relative to the substrate 160, the closer the first positioning circular hole C1 is to the optical center O, the less likely the light path is offset by thermal expansion and contraction, and the more accurate it is. Therefore, when the first positioning circular hole C1 and the optical center O coincide or substantially coincide at the projection position of the base 114, even if the base 114 or the substrate 160 undergoes thermal expansion and contraction due to temperature changes, the light input can be maintained The accuracy of section 110. That is to say, through the above positioning structure, the spectrometer 100 can effectively solve the problem of reduced accuracy caused by the temperature difference.

In addition, in this embodiment, the center distance W1 between the first positioning circular hole C1 and the positioning long hole S is greater than 1/3 of the base length W2 of the base 114, for example, 2/3 or 3/ of the base length W2 5. Since the longer the center distance W1, the smaller the rotation angle of the base 114 when positioning and rotating, and the smaller the effect on accuracy, the center distance W1 is, for example, 2/3 or 3/5 of the base length W2. Incidentally, the center connection mentioned in this embodiment refers to the connection between the center of the first positioning circular hole C1 and the geometric center of the positioning long hole S, and the center distance W1 refers to the first positioning circular hole The linear distance from the center of C1 to the geometric center of the long hole S.

In this embodiment, in addition to the light input portion 110, the collimator lens 120 and the grating 130 may also have a first positioning circular hole C1 and a positioning long hole S. The first positioning circular hole C1 also penetrates the individual bases of the collimating mirror 120 and the grating 130. Moreover, the projections of the center line of the first positioning circular hole C1 and the positioning long hole S are all located on an optical reference plane of the collimator lens 120 and the grating 130 respectively. The first positioning circular holes C1 are also located at the projection positions of the optical centers of the collimator lens 120 and the grating 130 respectively. Since the second positioning round hole C2 and the third positioning round hole C3 on the substrate 160 are processed by CNC and other processing methods at one time, there is no cumulative tolerance, and the outside of the light input part 110 can be ensured. The optical precision between the straight mirror 120 and the grating 130.

2B is a partial top view of the spectrometer of another embodiment, FIG. 4A is a sectional combination view of the spectrometer of FIG. 2B taken along line B-B, and FIG. 4B is an exploded cross-sectional view of the spectrometer of FIG. 2B taken along line B-B. 2B, 4A, and 4B, the spectrometer 100' is similar to the spectrometer 100, and similar components are denoted by the same or similar reference numerals, and descriptions of similarities are omitted. Compared with the spectrometer 100, the first positioning circular hole C1' of the light input portion 110' of the spectrometer 100' is not located at the optical center of the light input portion 110', but is located at the side of the base 114' and the positioning long hole S'does not penetrate the base 114', but the first positioning round hole C1' penetrates the base 114'. In addition, in this embodiment, the center line of the first positioning circular hole C1' of the light input portion 110' and the positioning long hole S'(the direction of the long axis extension line L) may be located at the optical reference of the light input portion 110' Surface, but the first positioning circular hole C1' is not located at the optical center of the light input portion 110'.

Similarly, the height H1' of the first positioning pin P1 protruding from the substrate 160' is greater than the height H2' of the second positioning pin P2 protruding from the substrate 160', so the positioning and assembly method of the optical component of the spectrometer 100' is similar to that of the spectrometer 100. This will not be repeated here. Since the projection of the center line of the first positioning round hole C1' and the positioning long hole S'of the spectrometer 100' is located on an optical reference plane of the light input portion 110', the assembly personnel along the direction D2 (see (Counterclockwise direction) during rotation positioning of the light input section 110' to the substrate 160', assembly tolerance is absorbed by the positioning of the long hole S'in the direction of its long axis extension, so the optical reference of the light input section 110' can be ensured The surface is accurately aligned with the center line of the second positioning circular hole C2' and the third positioning circular hole C3' located on the substrate 160', and its optical accuracy can be ensured.

2C is a partial plan view of a spectrometer according to still another embodiment. Referring to FIGS. 2B and 2C, compared to the spectrometer 100′, the projection of the first positioning circular hole C1′ and the positioning long hole S′ at the center of the light input portion 110′ is located on the optical reference surface of the light input portion 110′ The center line of the first positioning circular hole C1" and the positioning long hole S" of the light input part 110" of this embodiment is the optical reference plane of the parallel light input part 110", that is, it is translated by a section relative to the optical reference plane distance. Since the assembly tolerance is absorbed by the positioning long hole S" in the direction of its long axis extension line, it can ensure that the optical reference surface of the light input portion 110" is exactly parallel to the second positioning circular hole and the third positioning circle of the substrate 160" The center line of the hole can also ensure its optical accuracy.

From another point of view, the above embodiment can also be summarized as a positioning structure of an optical element. Taking FIG. 2A as an example, the positioning structure of the optical element 112 is suitable for the substrate 160 of the spectrometer 100. The positioning structure of the optical element 112 includes a base 114, a first positioning pin P1, and a second positioning pin P2. The base 114 connects the optical element 112 and the substrate 160. The base 114 includes a first positioning portion. The first positioning portion has a first positioning hole (ie, first positioning round hole C1) and a second positioning hole (ie, positioning long hole S). The substrate 160 includes a third positioning hole (ie, second positioning round hole C2) and a fourth positioning hole (ie, third positioning round hole C3) corresponding to the first positioning hole and the second positioning hole. For convenience of description, the three positioning circular holes are respectively referred to as a first positioning hole, a third positioning hole, and a fourth positioning hole as positioning circular holes, and the fourth positioning hole S is a positioning long hole. A long axis extension line L of the fourth positioning hole S passes through the center of the first positioning hole C1. A short axis dimension W3 of the second positioning hole corresponds to the diameter of the first positioning hole. The first positioning pin P1 is fitted and inserted into the first positioning hole C1 and the third positioning hole. The second positioning pin P2 is fitted and inserted into the second positioning hole and the fourth positioning hole. Also, the second positioning pin P2 is adapted to the short axis size of the second positioning hole. In addition, in another embodiment not shown, one of the first positioning hole, the third positioning hole and the fourth positioning hole can also be changed to a long hole, and the third positioning hole can be changed to a round hole , But not limited to this. In addition, those with ordinary knowledge in the art can also understand that, for example, as shown in FIG. 2B, FIG. 2C, or other similar embodiments, the positioning structure of the optical element can also be summarized.

In summary, in the positioning structure of the spectrometer, the optical assembly and the optical element of the above embodiment, since the first positioning pin is adapted and arranged between the first positioning round hole and the second positioning round hole, it can be accurately The relative position of the three is determined, so the optical component can be accurately positioned. Therefore, the cooperation of the first positioning pin, the first positioning round hole and the second positioning round hole can accurately position. Furthermore, since the second positioning pin is adapted to a short axis size of the positioning long hole and the third positioning round hole, and is disposed between the positioning long hole and the third positioning round hole. Therefore, the positioning long hole allows the second positioning pin to be offset in its longitudinal direction, which can effectively absorb manufacturing tolerances. In addition, the second positioning round hole and the third positioning round hole corresponding to each optical component on the substrate can be manufactured at one time, so there is no cumulative tolerance. Furthermore, each first positioning circular hole can be located in the center of each optical component, or the projection of the center line of the first positioning circular hole and the positioning long hole can be parallel or on the optical reference plane. Therefore, even if the substrate is subjected to temperature changes When thermal expansion and contraction, it can still maintain the accuracy of the entire optical system.

100, 100’, 100” ‧‧‧ spectrometer 110, 110’, 110”‧‧‧ optical input section 112‧‧‧Optical components 114, 114’, 114” ‧‧‧ base 116‧‧‧Fittings 120‧‧‧collimator lens 130‧‧‧ grating 140‧‧‧focusing lens 150‧‧‧Image sensor 160‧‧‧substrate C1, C1’, C1”‧‧‧‧First positioning round hole C2, C2’‧‧‧Second positioning round hole C3, C3’‧‧‧third positioning round hole D1, D2, D3 ‧‧‧ direction H1, H2, H1’, H2’‧‧‧ Height L‧‧‧Long axis extension line P1‧‧‧First positioning pin P2‧‧‧Second positioning pin S, S’, S” ‧‧‧ positioning long hole S1‧‧‧rectangular section S2‧‧‧Semicircular section O‧‧‧Optical Center W1‧‧‧Center distance W2‧‧‧Base length W3‧‧‧Short axis size W4‧‧‧Outer diameter

FIG. 1 is a perspective view of a spectrometer according to an embodiment of the invention; 2A is a partial top view of the spectrometer of the embodiment of FIG. 1; 2B is a partial plan view of a spectrometer according to another embodiment; 2C is a partial plan view of a spectrometer according to another embodiment; FIG. 3A is a sectional sectional view of the spectrometer of FIG. 2A along line A-A; 3B is an exploded cross-sectional view of the spectrometer of FIG. 2A along line A-A; 4A is a cross-sectional view of the spectrometer of FIG. 2B taken along line B-B; 4B is an exploded cross-sectional view of the spectrometer of FIG. 2B along line B-B; and 5 is a partial enlarged view of the positioning long hole and the first positioning pin of FIG. 2A.

100‧‧‧Spectrometer

110‧‧‧Light input section

112‧‧‧Optical components

114‧‧‧Dock

116‧‧‧Fittings

160‧‧‧substrate

C1‧‧‧First positioning round hole (first positioning hole)

D1‧‧‧ direction

L‧‧‧Long axis extension line

P1‧‧‧First positioning pin

P2‧‧‧Second positioning pin

S‧‧‧Long hole for positioning (fourth positioning hole)

O‧‧‧Optical Center

W1‧‧‧Center distance

W2‧‧‧Base length

Claims (41)

A spectrometer, including: At least one optical component; A substrate on which the at least one optical component is disposed, one of the at least one optical component and the substrate has a first positioning circular hole and a positioning long hole, and the other of the at least one optical component and the substrate A second positioning round hole and a third positioning round hole, wherein a long axis extension line of the positioning long hole passes through the first positioning round hole, the second positioning round hole and the first positioning round hole Corresponding in position, the third positioning round hole corresponds to the positioning long hole in position; A first positioning pin, adapted and inserted into the first positioning round hole and the second positioning round hole; and A second positioning pin is adapted to a short axis size of the positioning long hole and the third positioning round hole, and is inserted into the positioning long hole and the third positioning round hole. The spectrometer according to item 1 of the patent application scope, wherein the first positioning pin and the second positioning pin have the same size specifications, and the first positioning round hole, the second positioning round hole, and the third positioning round hole The inner diameter and the size of the short axis are the same as the outer diameters of the first positioning pin and the second positioning pin. The spectrometer according to item 2 of the patent application scope, wherein one of the first positioning round hole and the positioning long hole penetrates a base of the optical component. The spectrometer according to item 2 of the patent application range, wherein the height of the first positioning pin protruding from the substrate is greater than the height of the second positioning pin protruding from the substrate. The spectrometer according to item 1 of the patent application scope, wherein the center line of the first positioning circular hole and the positioning long hole is parallel to an optical reference plane of the optical component. The spectrometer according to item 1 of the patent application scope, wherein the projection of the center line of the first positioning circular hole and the positioning long hole is located on an optical reference plane of the optical component. The spectrometer according to item 1 of the patent application scope, wherein the first positioning circular hole is located at a projection position of an optical center of the optical component on the substrate or a base of the optical component. The spectrometer according to item 1 of the patent application scope, wherein the center distance between the first positioning circular hole and the positioning long hole is greater than 1/3 of a base length of the optical component. The spectrometer according to item 1 of the patent application scope further includes at least one fixing member passing through and fixing the relative positions of the first positioning part and the second positioning part. The spectrometer according to item 1 of the patent application scope, wherein at least one of the first positioning pin and the second positioning pin is a screw pin. The spectrometer according to item 1 of the patent application scope, wherein at least one of the first positioning round hole, the positioning long hole, the second positioning round hole, and the third positioning round hole has a retaining adhesive on the side wall Groove. The spectrometer according to item 1 of the patent application scope, wherein the positioning long hole has a rectangular section and two semicircular sections, wherein the rectangular section is connected between the two semicircular sections, and the rectangular section is long at the positioning The dimension in the width direction of the hole and the diameter of the two semicircular segments are the same as the dimension of the short axis. The spectrometer according to item 1 of the patent application scope, wherein the first positioning pin and the second positioning pin are a rectangular parallelepiped or a cylinder. The spectrometer according to item 1 of the patent application scope, wherein the at least one optical component includes an optical input portion, a collimator lens, a grating, a focusing lens, and an image sensor arranged in order optically, and the The light input part, the collimator lens, and the grating all have the first positioning round hole and the positioning long hole, Wherein the size specifications of the first positioning pin and the second positioning pin are the same; One of the first positioning circular hole and the positioning long hole penetrates a base of each of the light input part, the collimator lens, and the grating; The height of the first positioning pin protruding from the substrate is greater than the height of the second positioning pin protruding from the substrate; The projections of the center lines of the first positioning circular hole and the positioning long hole are respectively located on an optical reference plane of the light input part, the collimator lens, and the grating; The first positioning circular hole is located at the projection position of the optical input part, the collimator lens, and the grating, respectively, on the substrate or a base of the individual optical component; The distance between the center of the first positioning circular hole and the positioning long hole is greater than 1/3 of the length of a base of the light input part, the collimator lens, and the grating; At least one of the first positioning round hole, the positioning long hole, the second positioning round hole and the third positioning round hole has a groove for holding a fixing glue; and The positioning long hole has a rectangular section and two semicircular sections, wherein the rectangular section is connected between the two semicircular sections, and the dimension of the rectangular section in the width direction of the positioning long hole is the same as that of the two semicircular sections The diameter is the same. An optical component positioning structure, suitable for a spectrometer, including: A first positioning part having a first positioning round hole and a positioning long hole, wherein a long axis extension line of the positioning long hole passes through the first positioning round hole; A second positioning part having a second positioning round hole and a third positioning round hole, wherein the second positioning round hole corresponds to the first positioning round hole in position, the third positioning round hole and the positioning The long holes correspond in position; A first positioning pin, adapted and inserted into the first positioning round hole and the second positioning round hole; and A second positioning pin is adapted to a short axis size of the positioning long hole and the third positioning round hole, and is inserted into the positioning long hole and the third positioning round hole. The positioning structure of the optical component as described in item 15 of the patent application scope, wherein the first positioning pin and the second positioning pin have the same size specification, and the first positioning round hole, the second positioning round hole and the first The inner diameter of the three positioning circular holes and the size of the short axis are the same as the outer diameters of the first positioning pin and the second positioning pin. The positioning structure of the optical component as described in Item 16 of the patent application range, wherein one of the first positioning round hole and the positioning long hole penetrates the first positioning portion. The positioning structure of the optical component as described in Item 16 of the patent application range, wherein the height of the first positioning pin protruding from the second positioning portion is greater than the height of the second positioning pin protruding from the second positioning portion. The positioning structure of the optical component as described in item 15 of the patent application range, wherein the center line of the first positioning round hole and the positioning long hole is parallel to an optical reference plane of the optical component. The positioning structure of the optical component as described in Item 15 of the patent application range, wherein the projection of the center line of the first positioning round hole and the positioning long hole is located on an optical reference plane of the optical component. The positioning structure of an optical component as described in item 15 of the patent application range, wherein the first positioning round hole is located at a projection position of an optical center of the optical component on the second positioning portion. The positioning structure of the optical component as described in Item 15 of the patent application range, wherein the center distance between the first positioning round hole and the positioning long hole is greater than 1/3 of a length of the optical component. The positioning structure of the optical component as described in item 15 of the patent application scope further includes at least one fixing member passing through and fixing the relative positions of the first positioning part and the second positioning part. The positioning structure of the optical component as described in item 15 of the patent application range, wherein at least one of the first positioning pin and the second positioning pin is a screw pin. The positioning structure of the optical component as described in item 15 of the patent application range, wherein at least one of the first positioning round hole, the positioning long hole, the second positioning round hole and the third positioning round hole is on the side wall It has a groove to hold the fixing glue. The positioning structure of the optical component as described in item 15 of the patent application range, wherein the positioning long hole has a rectangular section and two semicircular sections, wherein the rectangular section is connected between the two semicircular sections, and the rectangle The dimension of the segment in the width direction of the positioning long hole and the diameter of the two semicircular segments are the same as the dimension of the short axis. The positioning structure of the optical component as described in item 15 of the patent application range, wherein the first positioning pin and the second positioning pin are a rectangular parallelepiped or a cylinder. An optical element positioning structure, suitable for a substrate of a spectrometer, includes: A base connecting the optical element and the substrate, the base including: A first positioning portion has a first positioning hole and a second positioning hole, wherein the substrate includes a third positioning hole and a fourth positioning hole corresponding to the first positioning hole and the second positioning hole, the Three of the first positioning hole, the second positioning hole, the third positioning hole and the fourth positioning hole are positioning round holes, the first positioning hole, the second positioning hole, the third positioning hole and the One of the fourth positioning holes is a positioning long hole, a long axis extension line of the positioning long hole passes through the center of one of the three positioning round holes, and a short axis size of the positioning long hole corresponds to the three Locate the diameter of one of the round holes; A first positioning pin, adapted and inserted into the first positioning hole and the third positioning hole; and A second positioning pin is adapted and inserted into the second positioning hole and the fourth positioning hole. The positioning structure of the optical element as described in Item 28 of the patent application range, wherein one of the first positioning pin and the second positioning pin is adapted to the short axis size of the positioning long hole. The positioning structure of the optical element as described in item 28 of the patent application range, wherein the first positioning pin and the second positioning pin have the same size specification, and the first positioning round hole, the second positioning round hole and the first The inner diameter of the three positioning circular holes and the size of the short axis are substantially the same as the outer diameters of the first positioning pin and the second positioning pin. The positioning structure of an optical element as described in item 30 of the patent application range, wherein one of the first positioning round hole and the positioning long hole penetrates the first positioning portion. The positioning structure of the optical element as described in item 30 of the patent application range, wherein the height of the first positioning pin protruding from the substrate is greater than the height of the second positioning pin protruding from the substrate. The positioning structure of the optical component as described in item 28 of the patent application range, wherein the center line of the first positioning round hole and the positioning long hole is parallel to an optical reference plane of the optical element. The positioning structure of an optical element as described in item 28 of the patent application range, wherein the projection of the center line of the first positioning round hole and the positioning long hole is on an optical reference plane of the optical element. The positioning structure of an optical element as described in item 28 of the patent application range, wherein the first positioning round hole is located at a projection position of an optical center of the optical element on the substrate. The positioning structure of the optical element as described in Item 28 of the patent application range, wherein the center distance between the first positioning round hole and the positioning long hole is greater than 1/3 of a base length of the base. The positioning structure of the optical element as described in item 28 of the patent application scope further includes at least one fixing member passing through and fixing the relative position of the base and the substrate. The positioning structure of the optical element as described in item 28 of the patent application range, wherein at least one of the first positioning pin and the second positioning pin is a screw pin. The positioning structure of the optical element according to item 28 of the patent application range, wherein at least one of the first positioning round hole, the positioning long hole, the second positioning round hole and the third positioning round hole is on the side wall It has a groove to hold the fixing glue. The positioning structure of an optical element as described in Item 28 of the patent application range, wherein the positioning long hole has a rectangular section and two semicircular sections, wherein the rectangular section is connected between the two semicircular sections, and the rectangle The dimension of the segment in the width direction of the positioning long hole and the diameter of the two semicircular segments are the same as the dimension of the short axis. The positioning structure of the optical element as described in Item 28 of the patent application range, wherein the first positioning pin and the second positioning pin are a rectangular parallelepiped or a cylinder.

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