CN214375743U

CN214375743U - Compensation type coaxial light source device

Info

Publication number: CN214375743U
Application number: CN202120696919.4U
Authority: CN
Inventors: 滕君方; 黄芳林
Original assignee: Dongguan Ruixing Vision Technology Co ltd
Current assignee: Dongguan Ruixing Vision Technology Co ltd
Priority date: 2021-04-06
Filing date: 2021-04-06
Publication date: 2021-10-08
Anticipated expiration: 2031-04-06

Abstract

The utility model belongs to the technical field of the optical technology and specifically relates to indicate a coaxial light source device of offset-type, including light source subassembly, beam splitter and compensating part, the light that the light source subassembly sent is reflected to the measured object through the beam splitter beam splitting, and the light of beam splitter reflection can produce the light skew, so corrects the compensation via the light of compensating part to the beam splitter, makes the camera lens clear to the final formation of image of measured object. The utility model has the advantages of simple structure, both can provide the illumination for the measured object, do not influence the formation of image effect again, the practicality is high.

Description

Compensation type coaxial light source device

Technical Field

The utility model belongs to the technical field of the optics technique and specifically relates to indicate a coaxial light source device of offset-type.

Background

In industrial lenses, a coaxial light source is often used to compensate the light of the lens. As shown in fig. 1, for a conventional coaxial light source commonly used in the market at present, light emitted from the light source passes through a beam splitter mirror arranged at an angle of 45 degrees and then is directly emitted out through a dustproof mirror at the top, and the dustproof mirror is directly installed on a housing without other corresponding settings.

In this conventional structure, since the built-in beam splitter is placed at 45 °, the optical path length in the direction and the direction perpendicular to the direction may be changed, which results in deviation of the working distance of the imaging in two directions, and when the conventional structure is applied to a high-magnification lens, the deviation may be magnified, as shown in fig. 2 and 3, for the imaging of the high-magnification lens after the conventional coaxial light source is applied, the transverse direction is the X direction, and the longitudinal direction is the Y direction, it is obvious that only one direction in the X and Y directions in the imaging, no matter in fig. 2 or fig. 3, is clear, that is, the built-in beam splitter with an angle of 45 ° may affect the imaging effect, and is not beneficial to the subsequent imaging detection of the lens.

Disclosure of Invention

The utility model discloses problem to prior art provides a coaxial light source device of offset-type, becomes certain angle setting with the compensator, compensates the optical path change that the beam split produced for ultimate formation of image is clear.

In order to solve the technical problem, the utility model discloses a following technical scheme: a compensation type coaxial light source device comprises a light source component, a light splitting component and a compensation component, wherein light emitted by the light source component is reflected by the light splitting component and then is transmitted out by the compensation component; the compensating part is used for compensating and correcting the light rays with the deviation angle after the light splitting reflection of the light splitting part.

Preferably, the compensation type coaxial light source device further comprises a housing, an upper cover is arranged at the top of the housing, the light splitting part is fixed in the housing and is obliquely arranged with the upper cover, and the compensation part is arranged on the upper cover and is obliquely arranged with the upper cover; the inclination angle between the light splitting piece and the upper cover is the same as the inclination angle between the compensation piece and the upper cover, and the normal of the plane where the light splitting piece is located is perpendicular to the normal of the plane where the compensation piece is located.

Preferably, the inclination angle between the light splitting piece and the upper cover is 45 degrees, and the inclination angle between the compensation piece and the upper cover is 45 degrees.

Preferably, the compensation member is a light-transmitting mirror.

Preferably, the thickness and the manufacturing material of the compensating piece are the same as those of the light splitting piece.

Preferably, the housing further comprises a dust cover fixed to the upper cover, the dust cover is provided with a first light through hole for assembling the compensation member, and the upper cover is provided with a second light through hole communicated with the first light through hole.

Preferably, the light source subassembly includes luminescent plate and radiating piece, the luminescent plate is fixed in the radiating piece, the radiating piece be used for doing the luminescent plate heat dissipation, luminescent plate and radiating piece all install in the shell.

Preferably, the light emitting plate comprises a plurality of light emitting LED lamps arranged at equal intervals.

Preferably, the light source assembly further includes a diffusion plate disposed between the light emitting plate and the light splitting member.

The utility model has the advantages that:

the utility model provides a pair of coaxial light source device of offset-type, through spectral reflection to the testee, and the light of spectral reflection can produce the light skew, so correct the compensation via the light of compensator to the spectral, make the camera lens clear to the final formation of image of testee. The utility model has the advantages of simple structure, both can provide the illumination for the measured object, do not influence the formation of image effect again, the practicality is high.

Drawings

Fig. 1 is a schematic structural diagram of the prior art.

Fig. 2 is a first image effect diagram in the prior art.

Fig. 3 is a diagram of an imaging effect in the prior art.

Fig. 4 is a schematic structural diagram of the present invention.

Fig. 5 is a front view of fig. 4 with a portion of the housing hidden.

Fig. 6 is a right side view of fig. 4 with a portion of the housing hidden.

Fig. 7 is a first schematic structural diagram of the present invention after a part of the housing is hidden.

Fig. 8 is a schematic structural diagram of the present invention after the partial housing is hidden.

Fig. 9 is a schematic structural view of the dust cover and the housing of the present invention after being disassembled.

Fig. 10 is a diagram illustrating the imaging effect of the lens after applying the present invention.

The reference numerals in fig. 1 to 10 include:

the LED lamp comprises a 3' -dustproof mirror, a 1-light source assembly, a 2-light splitting assembly, a 3-compensating assembly, a 4-shell, a 5-upper cover, a 6-dustproof cover, a 7-first light through hole, a 8-second light through hole, a 9-light emitting plate, a 10-heat radiating element, an 11-light emitting LED lamp, a 12-diffusion plate and a 13-mounting groove.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention. The present invention will be described in detail with reference to the accompanying drawings.

The compensation-type coaxial light source device provided in this embodiment, as shown in fig. 4 to 6, includes a light source assembly 1, a light splitter 2, and a compensator 3, where light emitted from the light source assembly 1 is reflected by the light splitter 2 and then transmitted out by the compensator 3; the compensation part 3 is used for compensating and correcting the light rays with the deviation angle after the light splitting reflection of the light splitting part 2. Wherein the light splitting component 2 is a light splitter.

Specifically, the external coaxial light source in the prior art actually reflects light to the object to be measured only through the light splitting element 2, and the light splitting element 2 generates corresponding optical path deviation in the light splitting process, if the structure of fig. 1 is applied under a common lens, the optical path deviation has no obvious influence on the imaging of the lens, but if the structure is applied to a high-magnification lens, the imaging is inevitably amplified, the resolution of the amplified lens is correspondingly amplified, and the influence of the optical path deviation of the light splitting element 2 is also presented, for example, as shown in fig. 2 and 3, in order to influence the imaging of the conventional coaxial light source on the high-magnification lens, the optical path of the direction and the direction perpendicular to the direction is changed by placing the built-in beam splitter 45 ° of the common coaxial light source, so that the working distance of the imaging in two directions is deviated, and thus the X and Y directions in fig. 2 and 3 are caused, only one direction is clear. In the present embodiment, in order to compensate the optical path deviation of the light splitting element 2, the compensating element 3 is set to have a certain angle, and the optical path deviation generated by the light splitting element 2 is compensated by the compensating element 3, so that the image is restored to the state shown in fig. 10, and the images in both directions X and Y are clear. The simple structure of this embodiment both can provide the illumination for the measured object, does not influence the formation of image effect again, and the practicality is high.

The compensation-type coaxial light source device of the present embodiment further includes a housing 4, the top of the housing 4 is provided with an upper cover 5, the light-splitting component 2 is fixed in the housing 4 and is arranged to be inclined with the upper cover 5, and the compensation component 3 is arranged in the upper cover 5 and is arranged to be inclined with the upper cover 5; the inclination angle between the light splitting piece 2 and the upper cover 5 is the same as the inclination angle between the compensation piece 3 and the upper cover 5, and the normal of the plane where the light splitting piece 2 is located is perpendicular to the normal of the plane where the compensation piece 3 is located. Preferably, the inclination angle between the light splitter 2 and the upper cover 5 is usually 45 degrees, and the inclination angle between the compensator 3 and the upper cover 5 is 45 degrees accordingly.

Specifically, the position angles of the light splitter 2 and the compensator 3 are set as shown in fig. 5 to 8, in the direction of fig. 5, the light splitter 2 forms an angle of 45 degrees with the upper cover 5 of the housing 4, in fig. 6, the compensator 3 also forms an angle of 45 degrees with the upper cover 5, but the angle of the compensator 3 is different from that of the light splitter 2, taking fig. 5 and 6 as an example, light is split by the light splitter 2 and then reflected onto the object to be measured, so as to provide illumination for the object to be measured, and the lens observes the object to be measured through the compensator 3 and the light splitter 2. The compensation member 3 is substantially a transparent mirror, and the material for manufacturing the compensation member 3 is the same as that for manufacturing the light splitting member 2, and in this embodiment, the thickness of the compensation member 3 is preferably set to be the same as that of the light splitting member 2, and the difference between the compensation member 3 and the light splitting member 2 is that the film plated on the light splitting member 2 is a reflective film, and the film plated on the compensation member 3 is a transparent film, so that the two can realize different functions, and since the compensation member 3 and the light splitting member 2 are the same in material and structural thickness, the compensation member 3 can perfectly compensate the optical path deviation of the light splitting member 2, so that the final image can be a clear image in fig. 10. That is, in this embodiment, perfect optical path compensation is realized by the angle setting of the compensator 3 and the matching of the material application, so that the imaging of the lens to which this embodiment is applied is not affected by the optical path deviation of the light splitter 2.

In the compensation-type coaxial light source device provided by this embodiment, as shown in fig. 4 and 9, the housing 4 further includes a dust cover 6, the dust cover 6 is fixed to the upper cover 5, the dust cover 6 is provided with a first light through hole 7 for assembling the compensation member 3, and the upper cover 5 is provided with a second light through hole 8 communicated with the first light through hole 7.

Specifically, the dust cover 6 is structured as shown in fig. 9, the structure of the dust cover 6 is set according to the angle required by the compensator 3, the hole edge of the first light through hole 7 of the dust cover 6 is provided with a mounting groove 13, the mounting groove 13 is used for clamping and mounting the compensator 3, and the mounting structure is simple and convenient to operate.

In the compensation-type coaxial light source device provided in this embodiment, as shown in fig. 5 and 8, the light source assembly 1 includes a light-emitting panel 9 and a heat dissipation member 10, the light-emitting panel 9 is fixed on the heat dissipation member 10, the heat dissipation member 10 is used for dissipating heat of the light-emitting panel 9, and the light-emitting panel 9 and the heat dissipation member 10 are both installed in the housing 4. Preferably, the light emitting panel 9 includes a plurality of light emitting LED lamps 11 arranged at equal intervals.

Specifically, compared with single-point light emission, the light-emitting LED lamp 11 arranged at a plurality of equal intervals is adopted in the present embodiment, so that light is uniform, and the light-emitting power is high, which is more favorable for light compensation of the lens.

In the compensation-type coaxial light source device provided in this embodiment, as shown in fig. 5 and 8, the light source assembly 1 further includes a diffusion plate 12, and the diffusion plate 12 is disposed between the light-emitting plate 9 and the light-splitting component 2.

Specifically, the light of the light emitting panel 9 can be made softer and more uniform by providing the diffusion plate 12.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention is disclosed in the preferred embodiment, it is not limited to the above description, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, but all the technical solutions of the present invention are within the scope of the present invention.

Claims

1. A compensation type coaxial light source device is characterized in that: the light source comprises a light source component, a light splitting component and a compensating component, wherein light emitted by the light source component is reflected by the light splitting component and then is transmitted out by the compensating component; the compensating part is used for compensating and correcting the light rays with the deviation angle after the light splitting reflection of the light splitting part.

2. The compensated coaxial light source device of claim 1, wherein: the compensation type coaxial light source device also comprises a shell, wherein the top of the shell is provided with an upper cover, the light splitting piece is fixed in the shell and is obliquely arranged with the upper cover, and the compensation piece is arranged on the upper cover and is obliquely arranged with the upper cover; the inclination angle between the light splitting piece and the upper cover is the same as the inclination angle between the compensation piece and the upper cover, and the normal of the plane where the light splitting piece is located is perpendicular to the normal of the plane where the compensation piece is located.

3. The compensated coaxial light source device of claim 2, wherein: the inclination between the beam splitter and the upper cover is 45 degrees, and the inclination between the compensator and the upper cover is 45 degrees.

4. The compensated coaxial light source device of claim 2, wherein: the compensation piece is a light-transmitting mirror.

5. The compensated coaxial light source device of claim 2, wherein: the thickness and the manufacturing material of the compensating piece are the same as those of the light splitting piece.

6. The compensated coaxial light source device of claim 2, wherein: the shell further comprises a dust cover, the dust cover is fixed on the upper cover, a first light through hole used for assembling the compensation part is formed in the dust cover, and a second light through hole communicated with the first light through hole is formed in the upper cover.

7. The compensated coaxial light source device of claim 2, wherein: the light source subassembly includes luminescent plate and radiating piece, the luminescent plate is fixed in the radiating piece, the radiating piece be used for doing the luminescent plate heat dissipation, luminescent plate and radiating piece all install in the shell.

8. The compensated coaxial light source device of claim 7, wherein: the light emitting plate comprises a plurality of light emitting LED lamps which are arranged at equal intervals.

9. The compensated coaxial light source device of claim 7, wherein: the light source assembly further comprises a diffusion plate, and the diffusion plate is arranged between the light emitting plate and the light splitting component.