CN109884771B - 45-degree angle precise adjusting device for reflecting surface and adjusting method thereof - Google Patents
45-degree angle precise adjusting device for reflecting surface and adjusting method thereof Download PDFInfo
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- CN109884771B CN109884771B CN201910314634.7A CN201910314634A CN109884771B CN 109884771 B CN109884771 B CN 109884771B CN 201910314634 A CN201910314634 A CN 201910314634A CN 109884771 B CN109884771 B CN 109884771B
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000003384 imaging method Methods 0.000 claims abstract description 32
- 238000009434 installation Methods 0.000 claims abstract description 23
- 238000001514 detection method Methods 0.000 claims description 11
- 238000004026 adhesive bonding Methods 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 description 7
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- 230000015572 biosynthetic process Effects 0.000 description 2
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- 230000006978 adaptation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
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Abstract
The invention discloses a 45-degree angle precise adjusting device of a reflecting surface and an adjusting method thereof, wherein a laser, an imaging objective lens, a first pentaprism with a beam-splitting cementing surface, a first beam-splitting prism, a second beam-splitting prism, a first pyramid prism and a second pyramid prism are mutually matched for use, so that the device has an auto-collimation function, can eliminate external interference in an adjusting process, ensures adjusting precision, realizes precise adjustment of the 45-degree angle between the reflecting surface and an installation surface, and has high precision and simple adjustment.
Description
Technical Field
The invention relates to the technical field of precision optics, in particular to a device and a method for accurately adjusting a 45-degree angle of a reflecting surface.
Background
In optical instruments and devices, the optical components can achieve good optical effects only by accurate alignment, and at present, the positioning is performed mechanically, so that the performance of the optical instruments is limited by mechanical tolerance, and the accuracy is reduced.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a device and a method for accurately adjusting the 45-degree angle between a reflecting surface and a mounting surface in the assembly process of an optical instrument, and the device has high accuracy and simple adjustment.
In order to solve the problems, the invention adopts the following technical scheme.
The utility model provides a 45 degrees accurate adjusting device of reflecting surface angle includes laser instrument, formation of image objective, the first penta prism that has the face of splitting glue, first beam splitter prism, second beam splitter prism and respectively with first beam splitter prism, the first angle cone prism of second beam splitter prism looks adaptation, second pyramid prism, the light output of laser instrument is towards the face of splitting glue of first penta prism, the first output of first penta prism is towards first beam splitter prism and output first light, the second output of first penta prism is towards outside installation face and output second light, first beam splitter prism receives first light and carries out beam splitting processing back and produces third light and fourth light, third light is directly output to the formation of image objective that is located one side of first beam splitter prism, second beam splitter prism is located one side of first beam splitter prism and carries out beam splitting processing again for receiving the fourth light after the first beam splitter prism beam splitter, the second beam splitter prism is located one side of second beam splitter prism in order to reflect the fifth light after the second beam splitter prism carries out beam splitter prism again, the first angle cone prism is located the first beam splitter prism after the first beam splitter prism is carried out beam splitter prism again after the first beam splitter prism is carried out reflection to the first angle prism again, the first angle reflection light is carried out to the first angle prism after the first beam splitter prism receives the first beam splitter prism.
As a further improvement of the invention, a reflecting component for changing the direction of light rays is arranged between the first pentaprism and the first beam-splitting prism, and the reflecting component consists of at least two pentaprisms, namely a second pentaprism and a third pentaprism.
As a further improvement of the invention, the image plane position of the imaging objective is provided with a camera for detecting whether the imaging light spots coincide.
As a further improvement of the invention, the first pentaprism with the beam-splitting bonding surface is formed by bonding a pentaprism and a first right-angle prism, and the bonding part of the pentaprism and the first right-angle prism is plated with a semi-transparent and semi-reflective film.
As a further development of the invention, the first right-angle prism has an angle of 67.5 °.
As a further development of the invention, the first pentaprism with a beam-splitting glue surface can be replaced by a third beam-splitting prism.
As a further development of the invention, the imaging objective is provided as a cemented lens, a single lens or an imaging lens group.
As a further development of the invention, the focal length f of the imaging objective is greater than 100 and less than 500.
As a further development of the invention, the second or third pentaprism can be replaced by a planar mirror or a second rectangular prism.
A45-degree angle precise adjustment method for a reflecting surface comprises the following steps:
the method comprises the steps of self-calibrating, turning on a laser, enabling a light beam emitted by the laser to generate first light and second light after passing through a pentaprism with a beam splitting gluing surface, enabling the first light to form third light and fourth light after being subjected to beam splitting treatment by a first beam splitting prism, enabling the third light to be directly output by an imaging objective lens and form a light spot B on a camera detection surface, enabling the fourth light to enter the second beam splitting prism and form fifth light and sixth light, enabling the fifth light to enter a second pyramid prism, returning to the second beam splitting prism, the first pyramid prism and the first beam splitting prism and then outputting to the imaging objective lens and form a light spot A on the camera detection surface, adjusting the laser to enable the light spot A and the light spot B to be completely overlapped, ensuring self-calibrating of the device and measuring accuracy;
adjusting the installation surface, placing the installation surface on a light path from which the sixth light is emitted, reflecting the sixth light by the installation surface, outputting the sixth light to the imaging objective lens through the second beam splitting prism, the first beam splitting prism and the first angle cone prism again, forming a light spot C on the detection surface of the camera, adjusting the installation surface of the emission surface to enable the light spot C to coincide with the light spot A and the light spot B, and finishing the adjustment of the installation surface;
the installation surface and the reflecting surface are adjusted to form an angle of 45 degrees, the reflecting surface is arranged on the installation surface, the second light rays are output to the reflecting surface and then sequentially output to the imaging objective lens through the second beam splitter prism, the first beam splitter prism and the first angle cone prism, a light spot D is formed on the detection surface of the camera, and the emission surface is adjusted to enable the light spot D to coincide with the light spot A and the light spot B, so that adjustment is completed.
The beneficial effects of the invention are that
Compared with the prior art, the invention has the advantages that:
according to the invention, the laser, the imaging objective lens, the first pentaprism with the light-splitting bonding surface, the first light-splitting prism, the second light-splitting prism, the first angular cone prism and the second angular cone prism are mutually matched for use, so that the self-collimation type light-emitting device has the self-collimation function, can eliminate external interference in the adjusting process, ensures the adjusting precision, realizes accurate adjustment of a 45-degree angle between the reflecting surface and the mounting surface, and has high precision and simple adjustment.
Drawings
Figure 1 is a schematic view of the structure of the present invention,
figure 2 is a schematic diagram of a self-calibrating optical path of the present invention,
figure 3 is a schematic view of the optical path of the mounting surface for adjustment according to the present invention,
figure 4 is a schematic view of an adjusting light path of the invention for adjusting the angle of the reflecting surface by 45 degrees,
FIG. 5 is a schematic view showing the replacement of the first pentagonal prism with the third prism according to the present invention,
figure 6 is a schematic view of the present invention with the second pentaprism and the third pentaprism replaced with planar mirrors,
fig. 7 is a schematic diagram showing the replacement of the second pentaprism and the third pentaprism with the third right angle prism according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present invention are within the protection scope of the present invention.
Referring to fig. 1 to 7, an accurate adjusting device for 45-degree angle of a reflecting surface includes a laser 100, an imaging objective 8, a first pentaprism 1 having a beam splitting and gluing surface, a first beam splitting prism 4, a second beam splitting prism 5, and a first pyramid prism 7 and a second pyramid prism 6 respectively adapted to the first beam splitting prism 4 and the second beam splitting prism 5, wherein a light output end of the laser 100 faces the beam splitting and gluing surface of the first pentaprism 1, a first output end of the first pentaprism 1 faces the first beam splitting prism 4 and outputs a first light, a second output end of the first pentaprism 1 faces an external mounting surface 11 and outputs a second light, the first beam splitting prism 4 receives the first light and performs beam splitting treatment to generate a third light and a fourth light, the third light is directly output to the imaging objective 8 located at one side of the first beam splitting prism 4, the second beam splitting prism 5 is located at one side of the first beam splitting prism 4 for receiving the fourth light after being split by the first beam splitting prism 4 and performing beam splitting treatment again, the first output end of the first pentaprism 1 faces the first beam splitting prism 4 again, the second light is reflected by the second pyramid prism 5 located at one side of the first beam splitting prism 5 after being split prism 5 faces the first beam splitting prism 4 again, and the second light is reflected by the first pyramid prism 5 located at one side of the first beam splitting prism 4 after passing through the first beam splitting prism 5 is located at the first pyramid prism 5. The adjusting device has an auto-collimation function, can eliminate external interference in the adjusting process, and ensures the adjusting precision.
In the invention, a method for precisely adjusting the angle of the reflecting surface 1145 degrees by adopting the adjusting device comprises the following steps:
the self calibration is carried out, the laser 100 is turned on, the light beam emitted by the laser 100 generates first light and second light after passing through a pentaprism with a beam splitting gluing surface, the first light is subjected to beam splitting treatment by the first beam splitting prism 4 to form third light and fourth light, the third light is directly output by the imaging objective lens 8 and forms a light spot B on a camera detection surface, the fourth light enters the second beam splitting prism 5 to form fifth light and sixth light, the fifth light enters the second pyramid prism 6 and returns to the second beam splitting prism 5, the first pyramid prism 7 and the first beam splitting prism 4 and is output to the imaging objective lens 8 and forms a light spot A on the camera detection surface, the laser 100 is regulated to ensure that the light spot A and the light spot B are completely overlapped, the self calibration of the device is ensured, and the measurement accuracy is ensured;
adjusting the installation surface 11, placing the installation surface 11 on a light path of the sixth light, reflecting the sixth light by the installation surface 11, outputting the sixth light to the imaging objective 8 through the second beam splitting prism 5, the first beam splitting prism 4 and the first angle cone prism 7 again, forming a light spot C on a camera detection surface, adjusting the installation surface 11 of the emission surface to enable the light spot C to coincide with the light spot A and the light spot B, and finishing adjustment of the installation surface 11;
the adjusting installation surface 11 forms a 45-degree angle with the reflecting surface 11, the reflecting surface 11 is arranged on the installation surface 11, the second light rays are output to the reflecting surface 11 and then sequentially output to the imaging objective 8 through the second beam splitting prism 5, the first beam splitting prism 4 and the first angle cone prism 7, a light spot D is formed on the detecting surface of the camera, and the emitting surface is adjusted to enable the light spot D to coincide with the light spot A and the light spot B, so that adjustment is completed.
Further, a reflecting component for changing the light direction is further disposed between the first pentaprism 1 and the first beam splitter prism 4, and the reflecting component is composed of at least two pentaprisms, namely a second pentaprism 2 and a third pentaprism 3.
Further, a camera 9 for detecting whether the imaging light spots coincide is provided at the image plane position of the imaging objective lens 8.
The first pentaprism 1 with the beam-splitting bonding surface is formed by bonding a pentaprism 101 and a first right-angle prism 102, and a semi-transparent and semi-reflective film is plated at the bonding position of the pentaprism 101 and the first right-angle prism 102.
Preferably, the first right angle prism 102 has an angle of 67.5 °.
Preferably, the first pentaprism 1 with a beam-splitting adhesive surface is replaced by a third beam-splitting prism.
Preferably, the imaging objective 8 is provided as a cemented lens, a single lens or an imaging lens group.
In order to ensure the adjustment accuracy and the reasonable structure of the device, the focal length f of the imaging objective lens 8 is more than 100 and less than 500.
Preferably, the second pentaprism 2 or the third pentaprism 3 may be replaced with a plane mirror or a second right angle prism.
The above description is only of the preferred embodiments of the present invention; the scope of the invention is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present invention, and the technical solution and the improvement thereof are all covered by the protection scope of the present invention.
Claims (8)
1. The device comprises a laser, an imaging objective lens, a first penta prism with a beam splitting cementing surface, a first beam splitting prism, a second beam splitting prism, a first pyramid prism and a second pyramid prism, wherein the first pyramid prism and the second pyramid prism are respectively matched with the first beam splitting prism and the second beam splitting prism; a reflecting component for changing the light direction is further arranged between the first pentaprism and the first beam-splitting prism, and the reflecting component consists of at least two pentaprisms, namely a second pentaprism and a third pentaprism; and a camera for detecting whether the imaging light spots coincide or not is arranged at the image plane position of the imaging objective lens.
2. The precise 45-degree angle adjusting device for a reflecting surface according to claim 1, wherein: the first pentaprism with the beam-splitting bonding surface is formed by bonding a pentaprism and a first right-angle prism, and a semi-transparent and semi-reflective film is plated at the bonding position of the pentaprism and the first right-angle prism.
3. The precise 45-degree angle adjusting device for a reflecting surface according to claim 2, wherein: the first right angle prism has an angle of 67.5 °.
4. The precise 45-degree angle adjusting device for a reflecting surface according to claim 1, wherein: the first pentaprism with the light-splitting glued surface can be replaced by a third light-splitting prism.
5. The precise 45-degree angle adjusting device for a reflecting surface according to claim 1, wherein: the imaging objective lens is arranged as a cemented lens, a single lens or an imaging lens group.
6. The precise 45-degree angle adjusting device for a reflecting surface according to claim 1, wherein: the focal length f of the imaging objective lens is greater than 100 and less than 500.
7. The precise 45-degree angle adjusting device for a reflecting surface according to claim 1, wherein: the second pentaprism or the third pentaprism can be replaced by a plane reflecting mirror or a second right angle prism.
8. The method for precisely adjusting the 45-degree angle of the reflecting surface is characterized by comprising the following steps of:
the method comprises the steps of self-calibrating, turning on a laser, enabling a light beam emitted by the laser to generate first light and second light after passing through a pentaprism with a beam splitting gluing surface, enabling the first light to form third light and fourth light after being subjected to beam splitting treatment by a first beam splitting prism, enabling the third light to be directly output by an imaging objective lens and form a light spot B on a camera detection surface, enabling the fourth light to enter the second beam splitting prism and form fifth light and sixth light, enabling the fifth light to enter a second pyramid prism, returning to the second beam splitting prism, the first pyramid prism and the first beam splitting prism and then outputting to the imaging objective lens and form a light spot A on the camera detection surface, adjusting the laser to enable the light spot A and the light spot B to be completely overlapped, ensuring self-calibrating of the device and measuring accuracy;
adjusting the installation surface, placing the installation surface on a light path from which the sixth light is emitted, reflecting the sixth light by the installation surface, outputting the sixth light to the imaging objective lens through the second beam splitting prism, the first beam splitting prism and the first angle cone prism again, forming a light spot C on the detection surface of the camera, adjusting the installation surface of the emission surface to enable the light spot C to coincide with the light spot A and the light spot B, and finishing the adjustment of the installation surface;
the installation surface and the reflecting surface are adjusted to form an angle of 45 degrees, the reflecting surface is arranged on the installation surface, the second light rays are output to the reflecting surface and then sequentially output to the imaging objective lens through the second beam splitter prism, the first beam splitter prism and the first angle cone prism, a light spot D is formed on the detection surface of the camera, and the emission surface is adjusted to enable the light spot D to coincide with the light spot A and the light spot B, so that adjustment is completed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910314634.7A CN109884771B (en) | 2019-04-18 | 2019-04-18 | 45-degree angle precise adjusting device for reflecting surface and adjusting method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910314634.7A CN109884771B (en) | 2019-04-18 | 2019-04-18 | 45-degree angle precise adjusting device for reflecting surface and adjusting method thereof |
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| CN109884771B true CN109884771B (en) | 2024-02-13 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR399072A (en) * | 1909-02-02 | 1909-06-21 | Paul Aubry | Optical device for adjusting parallelism in two directions |
| JP2001235308A (en) * | 2000-02-22 | 2001-08-31 | Nec Corp | Alignment variation measuring apparatus |
| CN108050933A (en) * | 2017-12-18 | 2018-05-18 | 中国科学院西安光学精密机械研究所 | Cube-corner prism retroreflective light spot positioning accuracy detection device and method |
| CN108398104A (en) * | 2018-02-01 | 2018-08-14 | 中国科学院国家天文台南京天文光学技术研究所 | The photoelectricity dynamic angle measuring devices and its method of random error can be reduced |
| CN209606695U (en) * | 2019-04-18 | 2019-11-08 | 珠海博明视觉科技有限公司 | A kind of 45 degree of angle device for precision regulating of reflecting surface |
-
2019
- 2019-04-18 CN CN201910314634.7A patent/CN109884771B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR399072A (en) * | 1909-02-02 | 1909-06-21 | Paul Aubry | Optical device for adjusting parallelism in two directions |
| JP2001235308A (en) * | 2000-02-22 | 2001-08-31 | Nec Corp | Alignment variation measuring apparatus |
| CN108050933A (en) * | 2017-12-18 | 2018-05-18 | 中国科学院西安光学精密机械研究所 | Cube-corner prism retroreflective light spot positioning accuracy detection device and method |
| CN108398104A (en) * | 2018-02-01 | 2018-08-14 | 中国科学院国家天文台南京天文光学技术研究所 | The photoelectricity dynamic angle measuring devices and its method of random error can be reduced |
| CN209606695U (en) * | 2019-04-18 | 2019-11-08 | 珠海博明视觉科技有限公司 | A kind of 45 degree of angle device for precision regulating of reflecting surface |
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