CN212647152U - Double-light-path video imaging device - Google Patents

Abstract

The utility model discloses a double-light-path video imaging device, which comprises a first rear half mirror obliquely arranged in front of a CCD camera, wherein a first rear reflector is arranged in the front of the first rear half mirror in the direction of light reflection, a first lens group and a first front reflector are arranged in front of the first rear reflector, and a first front half mirror and a first objective group are arranged in front of the first front reflector; a second rear lens group and a second half mirror are arranged in the front of the light transmission direction of the first rear half mirror, a second front lens group and a second objective lens group are arranged in the front of the light reflection direction of the light reflection surface of the second half mirror, and a second reflector is arranged in the rear of the light transmission direction of the second half mirror; a baffle sheet controlled by a push-pull type electromagnet is arranged between the second objective lens group and the second front lens group. Compare prior art, the utility model discloses can realize observing two objects of inspection or observe the different positions of an object of inspection simultaneously with two different magnifications at a display screen simultaneously.

Description

Double-light-path video imaging device

Technical Field

The utility model belongs to the technical field of the microscope manufacturing technique and specifically relates to a double-light-path video imaging device for microscope.

Background

Generally, a microscope can only observe one object, and there is a light path video imaging device of the microscope, which includes a CCD camera, in which a lens group, a semi-transparent reflector and an objective lens group are sequentially disposed in front of a central axis of the CCD camera in a direction toward the object. The optical path video imaging device of the microscope has the following problems in the use process; for some fields of electronic equipment, semiconductors and the like, two objects need to be observed and checked at two different magnifications simultaneously or different parts of one object need to be observed and checked simultaneously on one display screen, and the conventional optical path video imaging device cannot be realized; therefore, how to manufacture a dual optical path video imaging apparatus capable of observing and inspecting two objects at two different magnifications on the same display screen and also observing and inspecting different parts of the same object is a problem to be solved in advance for the practitioners of microscope manufacture.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a dual-light-path video imaging device is provided to solve the problem that current light-path video imaging device can't realize observing two objects of inspection or observing the different positions of inspecting an object simultaneously with two different magnifications at a display screen simultaneously.

The utility model provides a technical scheme that technical problem adopted does: the double-light-path video imaging device comprises a CCD camera, wherein a first rear half-mirror is obliquely arranged in front of the direction of the central axis of the CCD camera, a first rear reflector is arranged in front of the reflecting direction of the reflecting surface of the first rear half-mirror, a first lens group and a first front reflector are sequentially arranged in front of the reflecting direction of the reflecting surface of the first rear reflector, a first front half-mirror and a first objective lens group are sequentially arranged in front of the reflecting direction of the reflecting surface of the first front reflector, and a first light source is arranged on one side of the reflecting direction of the reflecting surface of the first front half-mirror; a second rear lens group and a second semi-transparent semi-reflecting lens which is arranged in parallel with the first rear semi-transparent semi-reflecting lens are sequentially arranged in front of the light transmission direction of the first rear semi-transparent semi-reflecting lens, a second front lens group and a second lens group are sequentially arranged in front of the light reflection direction of the light reflection surface of the second semi-transparent semi-reflecting lens, a second reflector is arranged behind the light transmission direction of the second semi-transparent semi-reflecting lens, and a second light source is arranged on one side of the light reflection direction of the light reflection surface of the second reflector; annular light sources are arranged in front of the second objective lens group and the first objective lens group;

a blocking piece controlled by a push-pull type electromagnet is arranged between the second objective lens group and the second front lens group and between the first front semi-transparent semi-reflective mirror and the first front reflective mirror, and when the push-pull type electromagnet is in a power-off state, the blocking piece is positioned between the first front semi-transparent semi-reflective mirror and the first front reflective mirror;

when the push-pull electromagnet is in an electrified state, the blocking piece is positioned between the second objective lens group and the second front lens group under the control of the push-pull electromagnet.

In the above two-optical path video imaging apparatus, a more specific technical solution may also be: the oblique angle a of the first rear semi-transparent and semi-reflective mirror is 45 degrees, and the oblique angle a of the first rear semi-transparent and semi-reflective mirror is an included angle between the reflecting surface of the first rear semi-transparent and semi-reflective mirror and the central axis of the CCD camera.

Further: the reflecting surface of the second reflector is parallel to the second semi-transparent semi-reflecting mirror; the first front half-transmitting half-reflecting mirror and the first rear half-transmitting half-reflecting mirror are arranged in parallel; the reflecting surface of the first front reflector and the reflecting surface of the first rear reflector are oppositely arranged, and the reflecting surface of the first front reflector and the reflecting surface of the first rear reflector are both arranged in parallel with the first rear semi-transparent semi-reflective mirror.

Further: the second light source and the first light source are both LED lamps; the annular light source is an annular LED lamp.

Further: the second rear lens group comprises a first lens unit and a second lens unit which are arranged at intervals, the first lens unit is provided with a first plano-convex lens and a first biconcave lens, and the convex surface of the first plano-convex lens is abutted with the concave surface of the first biconcave lens; the second lens unit is provided with a second plano-convex lens and a second biconcave lens, the convex surface of the second plano-convex lens is abutted to the concave surface of the second biconcave lens, the second biconcave lens is positioned at one side close to the first rear half-lens, and the plane of the second plano-convex lens is positioned at one side close to the first biconcave lens;

the second front lens group is provided with a third plano-convex lens and a first biconvex lens which are arranged at intervals, the first biconvex lens is positioned at one side close to the second half mirror, and the convex surface of the third plano-convex lens is positioned at one side close to the first biconvex lens;

the second objective group is provided with a fourth plano-convex lens, a second biconvex lens and a third biconvex lens which are arranged at intervals, the third biconvex lens is positioned at one side of the third plano-convex lens close to the second front objective group, the second biconvex lens is positioned between the fourth plano-convex lens and the third biconvex lens, and the convex surface of the fourth plano-convex lens is positioned at one side close to the second biconvex lens.

The front direction of the present invention is the direction from the second front lens group to the second lens group.

Since the technical scheme is used, compared with the prior art, the utility model following beneficial effect has: 1. because the two optical paths of the double-optical-path video imaging device share one CCD camera, and the blocking piece controlled by the push-pull type electromagnet is arranged behind the first objective lens group and the second objective lens group of the two optical paths, when the push-pull type electromagnet is in a power-off state, the blocking piece is positioned between the first front semi-transparent semi-reflecting mirror and the first front reflecting mirror behind the first objective lens group; when the push-pull electromagnet is in a power-on state, the blocking piece is positioned between the second objective lens group and the second front lens group under the control of the push-pull electromagnet, and when an object I or an object II is to be observed, the push-pull electromagnet is controlled; the double-light-path video imaging device can observe two objects at fixed positions, and the multiple of the light path in the second path is large, so that each detail of the object can be observed in detail; the multiple of the first path of light is small, the surface of an object can be roughly observed, and a CCD camera and a display screen can meet the requirement; the problem that the existing optical path video imaging device can not realize the simultaneous observation and inspection of two objects with two different magnifications on one display screen or the simultaneous observation and inspection of different parts of one object is solved, the working efficiency can be improved, different requirements of customers are met, and the cost is saved; 2. the method is suitable for the fields of electronic equipment, semiconductors and the like.

Drawings

Fig. 1 is a schematic diagram of the light path direction when the push-pull electromagnet of the embodiment of the present invention is in the power-off state.

Fig. 2 is a schematic diagram of the light path direction when the push-pull electromagnet of the embodiment of the present invention is in the power-on state.

Fig. 3 is a schematic position diagram of the first rear half mirror and the CCD camera according to the embodiment of the present invention.

Fig. 4 is a schematic position diagram of the second half mirror and the second reflective mirror according to an embodiment of the present invention.

Fig. 5 is a schematic position diagram of the first front reflector according to the embodiment of the present invention.

Fig. 6 is a schematic structural diagram of the second rear lens group according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a second front lens group according to an embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a second objective lens group according to an embodiment of the present invention.

Fig. 9 is a schematic structural diagram of a first lens group according to an embodiment of the present invention.

Fig. 10 is a schematic structural diagram of a first objective lens group according to an embodiment of the present invention.

Detailed Description

The invention is described in detail below with reference to the accompanying drawings:

the dual-optical-path video imaging apparatus shown in fig. 1 and fig. 2 includes a CCD camera 1, in this embodiment, a first rear half mirror 2 is obliquely disposed in front of a central axis of the CCD camera 1, an oblique angle a of the first rear half mirror 2 of this embodiment is 45 °, and an oblique angle a of the first rear half mirror 2 is an included angle between a light reflecting surface of the first rear half mirror and the central axis of the CCD camera 1, as shown in fig. 3; a second rear lens group 3 and a second half mirror 7 arranged in parallel with the first rear half mirror 2 are sequentially arranged in front of the first rear half mirror 2 in the direction of light transmission, so that the second half mirror 7 of the present embodiment has an oblique angle c of 45 °; a second front lens group 8 and a second objective lens group 9 are sequentially arranged in front of the reflecting direction of the reflecting surface of the second half mirror 7, a second reflective mirror 6 is arranged behind the transmitting direction of the second half mirror 7, and the reflecting surface of the second reflective mirror 6 of the embodiment is arranged in parallel with the second half mirror 7, so that the inclination angle b of the reflecting surface of the second reflective mirror 6 is 45 degrees, as shown in fig. 4; a second light source 5 is arranged on one side of the reflecting surface of the second reflector 6, which faces the reflecting direction, and the second light source 5 in this embodiment is an LED lamp.

A first rear reflector 14 is arranged in front of the reflecting direction of the reflecting surface of the first rear half mirror 2, a first lens group 13 and a first front reflector 4 are sequentially arranged in front of the reflecting direction of the reflecting surface of the first rear half mirror 14, the reflecting surface of the first front reflector 4 and the reflecting surface of the first rear reflector 14 are oppositely arranged, and the reflecting surface of the first front reflector 4 and the reflecting surface of the first rear reflector 14 are both arranged in parallel with the first rear half mirror 2, so that the inclination angle d of the reflecting surface of the first front reflector 4 is 45 degrees, as shown in fig. 5; a first front half mirror 11 and a first objective lens group 10 are sequentially arranged in front of the reflecting surface of the first front reflective mirror 4, the first front half mirror 11 and the first rear half mirror 2 are arranged in parallel, a first light source 12 is arranged on one side of the reflecting surface of the first front half mirror 11, and the first light source 12 is an LED lamp.

The second rear lens group 3 of this embodiment includes a first lens unit and a second lens unit arranged at an interval, the first lens unit has a first plano-convex lens 3-1 and a first biconcave lens 3-2, and the convex surface of the first plano-convex lens 3-1 abuts against the concave surface of the first biconcave lens 3-2; the second lens unit has a second plano-convex lens 3-3 and a second double concave lens 3-4, the convex surface of the second plano-convex lens 3-3 abuts against the concave surface of the second double concave lens 3-4, the second double concave lens 3-4 is located at the side close to the first rear half mirror 2, and the plane of the second plano-convex lens 3-3 is located at the side close to the first double concave lens 3-2, as shown in fig. 6; the second front lens group 8 has a third plano-convex lens 8-1 and a first biconvex lens 8-2 arranged at intervals, the first biconvex lens 8-2 is positioned at one side close to the second half mirror 7, and the convex surface of the third plano-convex lens 8-1 is positioned at one side close to the first biconvex lens 8-2, as shown in fig. 7; the second lens group 9 has a fourth plano-convex lens 9-3, a second biconvex lens 9-2 and a third biconvex lens 9-1 arranged at intervals, the third biconvex lens 9-1 is positioned at one side of the third plano-convex lens 8-1 close to the second front lens group 8, the second biconvex lens 9-2 is positioned between the fourth plano-convex lens 9-3 and the third biconvex lens 9-1, and the convex surface of the fourth plano-convex lens 9-3 is positioned at one side close to the second biconvex lens 9-2, as shown in fig. 8; the first lens group 13 of the present embodiment includes a fourth lenticular lens 13-1 and a fifth lenticular lens 13-2 arranged at an interval, the fourth lenticular lens 13-1 being located on a side close to the first rear mirror 14, as shown in fig. 9; the first objective lens group 10 is provided with a fourth plano-convex lens 10-1, a first concave-convex lens unit and a fifth biconvex lens 10-4 which are arranged at intervals, and the convex surface of the fifth biconvex lens 10-4 is positioned at one side close to the first front half-lens 11; the first meniscus unit includes a first meniscus lens 10-2 and a second meniscus lens 10-3, the convex surface of the first meniscus lens 10-2 abuts against the concave surface of the second meniscus lens 10-3, the convex surface of the second meniscus lens 10-3 is positioned on the side close to the fifth biconvex lens 10-4, and the convex surface of the fourth plano-convex lens 10-1 is positioned on the side close to the first meniscus lens 10-2, as shown in fig. 10. A baffle 17 controlled by a push-pull electromagnet 18 is arranged between the second objective lens group 9 and the second front lens group 8 and between the first front semi-transparent semi-reflective mirror 11 and the first front reflective mirror 4, and when the push-pull electromagnet 18 is in a power-off state, the baffle 17 is positioned between the first front semi-transparent semi-reflective mirror 11 and the first front reflective mirror 4; when the push-pull electromagnet 18 is in the energized state, the blocking sheet 17 is positioned between the second objective lens group 9 and the second front lens group 8 under the control of the push-pull electromagnet 18.

When the object 1 is to be observed, the push-pull electromagnet 18 is controlled to be in an electrified state; at this time, an I-path optical path composed of the first rear half mirror 2, the first rear reflective mirror 14, the first lens group 13, the first front reflective mirror 4, the first front half mirror 11, the first objective lens group 10, the first light source 12 and the annular light source works; the principle is as follows: the LED lamp of the first light source 12 emits light beams, the light beams are reflected by the first front half-transmitting and half-reflecting mirror 11, and the reflected light rays penetrate through the first objective lens group 10 to reach the object 1; meanwhile, the reinforcing light beams emitted by the annular LED lamp 15 irradiate the object 1, and the two light beams are reflected by the object 1; the reflected light passes through the first objective lens group 10, then passes through the first front half mirror 11, and is reflected by the first front reflective mirror 4, and the reflected light passes through the first lens group 13, then is reflected by the first rear reflective mirror 14 to the first rear half mirror 2, and then is reflected by the first rear half mirror 2 to the CCD camera 1 for imaging; the I-th path magnification is 2X, as shown in fig. 2.

When the object 2 is required to be observed, the push-pull electromagnet 18 is controlled to be in a power-off state; at the moment, a second path of light path work is formed by the first rear half-mirror 2, the second rear lens group 3, the second half-mirror 7, the second front lens group 8, the second lens group 9, the second reflector 6, the second light source 5 and the annular light source; the principle is as follows: light beams emitted by the LED lamp of the second light source 5 pass through the second reflector 6, and reflected light rays pass through the second half mirror 7 and are reflected to the object 2 through the second front lens group 8 and the second objective lens group 9; meanwhile, the reinforcing light beams emitted by the annular LED lamp 16 irradiate the object 2, and the two light beams are reflected by the object 2 after passing through the object 2; the reflected light is reflected by the second half mirror 7 through the second objective lens group 9 and the second front lens group 8, and the reflected light passes through the second rear lens group 3 and then passes through the first rear half mirror 2 to reach the CCD camera 1 for imaging; the second path magnification is 12X, as shown in fig. 1.

The double-light-path video imaging device can observe two objects at fixed positions, and the multiple of the light path in the second path is large, so that each detail of the object can be observed in detail; the multiple of the first path of light is small, the surface of an object can be roughly observed, and a CCD camera and a display screen can meet the requirement; the problem of current light path video image device can't realize observing two objects of inspection or observe the different positions of an object of inspection simultaneously with two different magnifications simultaneously at a display screen is solved, both can improve work efficiency, satisfy customer's different demands, also practiced thrift the cost.

Claims (5)

1. A dual-light path video imaging device comprises a CCD camera, and is characterized in that: a first rear half mirror is obliquely arranged in front of the direction of the central axis of the CCD camera, a first rear reflector is arranged in front of the reflecting direction of the reflecting surface of the first rear half mirror, a first lens group and a first front reflector are sequentially arranged in front of the reflecting direction of the reflecting surface of the first rear reflector, a first front half mirror and a first objective lens group are sequentially arranged in front of the reflecting direction of the reflecting surface of the first front reflector, and a first light source is arranged on one side of the reflecting direction of the reflecting surface of the first front half mirror; a second rear lens group and a second semi-transparent semi-reflecting lens which is arranged in parallel with the first rear semi-transparent semi-reflecting lens are sequentially arranged in front of the light transmission direction of the first rear semi-transparent semi-reflecting lens, a second front lens group and a second lens group are sequentially arranged in front of the light reflection direction of the light reflection surface of the second semi-transparent semi-reflecting lens, a second reflector is arranged behind the light transmission direction of the second semi-transparent semi-reflecting lens, and a second light source is arranged on one side of the light reflection direction of the light reflection surface of the second reflector; annular light sources are arranged in front of the second objective lens group and the first objective lens group;

a blocking piece controlled by a push-pull type electromagnet is arranged between the second objective lens group and the second front lens group and between the first front semi-transparent semi-reflective mirror and the first front reflective mirror, and when the push-pull type electromagnet is in a power-off state, the blocking piece is positioned between the first front semi-transparent semi-reflective mirror and the first front reflective mirror;

when the push-pull electromagnet is in an electrified state, the blocking piece is positioned between the second objective lens group and the second front lens group under the control of the push-pull electromagnet.

2. The dual optical path video imaging apparatus of claim 1, wherein: the oblique angle (a) of the first rear semi-transparent and semi-reflective mirror is 45 degrees, and the oblique angle (a) of the first rear semi-transparent and semi-reflective mirror is an included angle between the light reflecting surface of the first rear semi-transparent and semi-reflective mirror and the central axis of the CCD camera.

3. A dual optical path video imaging apparatus as claimed in claim 1 or 2, wherein: the reflecting surface of the second reflector is parallel to the second semi-transparent semi-reflecting mirror; the first front half-transmitting half-reflecting mirror and the first rear half-transmitting half-reflecting mirror are arranged in parallel; the reflecting surface of the first front reflector and the reflecting surface of the first rear reflector are oppositely arranged, and the reflecting surface of the first front reflector and the reflecting surface of the first rear reflector are both arranged in parallel with the first rear semi-transparent semi-reflective mirror.

4. The dual optical path video imaging apparatus of claim 3, wherein: the second light source and the first light source are both LED lamps; the annular light source is an annular LED lamp.

5. The dual optical path video imaging apparatus of claim 4, wherein: the second rear lens group comprises a first lens unit and a second lens unit which are arranged at intervals, the first lens unit is provided with a first plano-convex lens and a first biconcave lens, and the convex surface of the first plano-convex lens is abutted with the concave surface of the first biconcave lens; the second lens unit is provided with a second plano-convex lens and a second biconcave lens, the convex surface of the second plano-convex lens is abutted to the concave surface of the second biconcave lens, the second biconcave lens is positioned at one side close to the first rear half-lens, and the plane of the second plano-convex lens is positioned at one side close to the first biconcave lens;

the second front lens group is provided with a third plano-convex lens and a first biconvex lens which are arranged at intervals, the first biconvex lens is positioned at one side close to the second half mirror, and the convex surface of the third plano-convex lens is positioned at one side close to the first biconvex lens;

the second objective group is provided with a fourth plano-convex lens, a second biconvex lens and a third biconvex lens which are arranged at intervals, the third biconvex lens is positioned at one side of the third plano-convex lens close to the second front objective group, the second biconvex lens is positioned between the fourth plano-convex lens and the third biconvex lens, and the convex surface of the fourth plano-convex lens is positioned at one side close to the second biconvex lens.

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