Optical calibration unit and optical data transmitter

Abstract

The utility model discloses an optical calibration unit and an optical data transmitter, relates to the technical field of optical communication, the optical calibration unit comprises a collimation light source and a calibration prism, the calibration prism comprises a hollow cylinder used for accommodating the collimation light source and an optical processing surface, the optical processing surface is located at one end of the hollow cylinder, and the collimation light source is arranged in the hollow cylinder. The optical processing surface comprises a first optical surface, a second optical surface and a third optical surface, the first optical surface is hollow, an angle alpha 1 is formed between the second optical surface and the optical calibration unit mounting surface, an angle alpha 2 is formed between the third optical surface and the optical calibration unit mounting surface, and alpha 1 is smaller than alpha 2; a light beam emitted by the collimation light source is divided into three beams by the calibration prism, the first light beam is horizontally emitted from the first optical surface, the second light beam is refracted on the second optical surface and emitted at an angle beta 1, the third light beam is refracted on the third optical surface and emitted at an angle beta 2, and beta 1gt; beta2.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical communication technical field especially relates to a light school is accurate unit and corresponding optical data transmission ware. BACKGROUND

[0002] Industrial stacking scene, will use optical data transmission ware, for long distance data transmission, transmission speed can reach 100M / s. The laser of optical data transmission on the market is generally selected infrared light, its main reason is that infrared light has stronger penetration compared with visible light. At the same time in the daily use process, the optical data transmission ware will be used with hundred meters TOF, and the red light of 650nm is selected for hundred meters TOF, and the infrared light wave band is used for optical data transmission ware, thereby avoiding the mutual interference between wave bands of hundred meters TOF. Because infrared light is invisible in vision, therefore how the optical data transmission ware of two infrared wave bands is installed at long distance, confirms communication, at this moment, it needs to be calibrated laser to assist, and the emission and reception of two optical data transmission wares are realized coaxial as far as possible. To ensure the normal communication of optical data transmission ware. UTILITY MODEL CONTENT

[0003] In order to solve the calibration problem of optical data transmission ware, the utility model provides a kind of optical calibration unit and optical data transmission ware.

[0004] Firstly, the utility model provides a kind of optical calibration unit using following technical scheme:

[0005] A kind of optical calibration unit, for the calibration of long distance optical data transmission ware, including collimating light source and calibration prism, wherein, the calibration prism includes the hollow cylinder for accommodating the collimating light source and optical processing surface, the optical processing surface is located at one end of the hollow cylinder, the optical processing surface includes first optical surface, second optical surface and third optical surface, the first optical surface is hollow, the second optical surface is present with the optical calibration unit installation surface α1 Angle, the third optical surface is present with the optical calibration unit installation surface α2 Angle, wherein α1 < α2;The light beam emitted by the collimating light source is divided into three beams by the calibration prism, the first light beam is horizontally emitted from the first optical surface, the second light beam is refracted in the second optical surface to angle β1 Emission, the third light beam is refracted in the third optical surface to angle β2 Emission, wherein β1 > β2.

[0006] Preferably, it further includes installation base, and the installation base is located at the other end of the hollow cylinder of the calibration prism.

[0007] Preferably, the material of the calibration prism is PC.

[0008] Preferably, the relationship between the angles a1, a2, b1 and b2 is a1+b1=a2+b2.

[0009] Preferably, the collimated light source is a collimated laser light source with a wavelength of 650 nm.

[0010] In a second aspect, the utility model embodiment further provides an optical data transmitter for long-distance data transmission, the optical data transmitter comprising the optical collimation unit of the first aspect.

[0011] The utility model utilizes the visible red laser beam to assist, realizes the emission and the receiving of two optical data transmitters and realizes the coaxial installation, guarantees the normal communication of optical data transmitter. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the optical collimation unit schematic diagram according to an embodiment of the utility model.

[0013] Figure 2 It is the installation schematic diagram of the optical collimation unit according to an embodiment of the utility model.

[0014] Figure 3 It is the optical path schematic diagram of the optical collimation unit according to an embodiment of the utility model.

[0015] MARK NO.

[0016] 1, calibration prism, 11, optical processing surface, 1101, first optical surface, 1102, second optical surface, 1103, third optical surface, 12, cylinder, 13, mounting base;

[0017] 2, mounting surface;

[0018] 31, first light beam, 32, second light beam, 33, third light beam. DETAILED DESCRIPTION

[0019] The utility model will be further explained in detail in combination with the drawings.

[0020] Refer to Figure 1 And Figure 2 In an embodiment of the utility model, the optical collimation unit is used for the calibration of long-distance optical data transmitter, comprising calibration prism 1, the collimated light source (not shown in the drawing) for the generation of 650nm wavelength red laser light arranged in the hollow cylinder 12 of calibration prism 1, the material of calibration prism 1 is PC, the end of calibration prism 1 is provided with mounting base 13, and a plurality of screw holes are arranged on the mounting base and used to install calibration prism 1 on mounting surface 2.

[0021] The front end of the calibration prism 1 is provided with an optical processing surface 11 for processing the laser beam emitted by the collimated light source, the optical processing surface 11 comprises a first optical surface 1101 which is hollow, a second optical surface 1102 which is at an angle of alpha 1 = 19° with the mounting surface 2, and a third optical surface 1103 which is at an angle of alpha 2 = 31° with the mounting surface 2, and the laser beam is divided into three beams by the optical processing surface 11 and is emitted from the three optical surfaces at different angles.

[0022] Reference Figure 3 Since the first optical surface 1101 is hollow, the first beam 31 is emitted perpendicularly to the mounting surface 2, the angle of the second optical surface 1102 is 19°, and the angle of the third optical surface 1103 is 31°, according to the law of optical refraction, the second beam 32 is emitted from the second optical surface 1102 at beta 1 = 78°, and the third beam 33 is emitted from the third optical surface 1103 at beta 2 = 66°, that is, alpha 1 + beta 1 = alpha 2 + beta 2 = 90°. 2。

[0023] In the calibration of the long-distance optical data transmitter, according to the spot positions of the three laser beams, the installation height and the installation position of the optical data transmitter can be determined by using the calculation of the triangular theorem. The emission and reception of two optical data transmitters are coaxially installed, and the normal communication of the optical data transmitter is ensured.

[0024] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An optical calibration unit for calibrating a long-distance optical data transmitter, characterized in that, This includes a collimating light source and a calibration prism, among which, The calibration prism includes a hollow cylinder for accommodating the collimating light source and an optical processing surface. The optical processing surface is located at one end of the hollow cylinder and includes a first optical surface, a second optical surface, and a third optical surface. The first optical surface is hollow, the second optical surface forms an angle α1 with the mounting surface of the optical calibration unit, and the third optical surface forms an angle α2 with the mounting surface of the optical calibration unit, where α1 < α2. The light beam emitted by the collimated light source is split into three beams by the calibration prism. The first beam is emitted horizontally from the first optical surface, the second beam is refracted at the second optical surface and emitted at an angle β1, and the third beam is refracted at the third optical surface and emitted at an angle β2, where β1>β2.

2. The optical calibration unit according to claim 1, characterized in that, It also includes a mounting base located at the other end of the hollow cylinder of the calibration prism.

3. The optical calibration unit according to claim 1, characterized in that, The calibration prism is made of PC.

4. The optical calibration unit according to claim 1, characterized in that, The relationship between the angles α1, α2, β1 and β2 is α1 + β1 = α2 + β2.

5. An optical calibration unit according to claim 1, characterized in that, The collimated light source is a laser light source with a wavelength of 650nm that has been collimated and configured.

6. An optical data transmitter for long-distance data transmission, characterized in that, The optical data transmitter includes an optical calibration unit as described in any one of claims 1-5.

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