CN111257899A

CN111257899A - Optical system of laser ranging telescope

Info

Publication number: CN111257899A
Application number: CN202010022395.0A
Authority: CN
Inventors: 周翔; 俞小进
Original assignee: Guangzhou Bosma Optoelectronic Technology Co ltd
Current assignee: Guangzhou Bosma Optoelectronic Technology Co ltd
Priority date: 2020-01-09
Filing date: 2020-01-09
Publication date: 2020-06-09

Abstract

The invention discloses an optical system of a laser range telescope, which comprises an objective lens, an ocular lens and a beam splitting system arranged in the middle of the objective lens and the ocular lens, wherein the beam splitting system comprises a first Schmitt prism, a second Schmitt prism and a compensating prism which are arranged on a main optical axis, the first Schmitt prism and the second Schmitt prism respectively comprise a transmitting and receiving surface, an internal reflecting surface and an external reflecting surface, the compensating prism is connected on the external reflecting surface of the second Schmitt prism, an APD detector and a self-luminous OLED display are arranged on the outer side of the compensation prism, the inner reflecting surfaces of the first Schmitt prism and the second Schmitt prism are oppositely arranged, the transmitting and receiving surfaces of the first Schmitt prism or the second Schmitt prism, one of which is opposite to the objective lens or the ocular lens, and the other of which makes the incident light pass through the ocular lens or the objective lens through a reflecting device, an LCD display is arranged on the path of the incident light, and a plurality of dielectric films are plated on the reflecting plane mirror surface or the transmitting plane mirror surface of the Schmidt prism group and the compensating prism. The invention has more compact structure and convenient layout.

Description

Optical system of laser ranging telescope

Technical Field

The invention relates to the technical field of laser ranging, in particular to an optical system of a laser ranging telescope.

Background

The laser distance measuring instrument in the prior art has various unsatisfactory points due to the limitation of the structure of the beam splitter. Firstly, most of the devices have complex structures, large appearance or volume, high installation and debugging difficulty, high difficulty in controlling the paths of the light beam separation transmission and low stability. Second, beam splitters and related components often require special design and fabrication, which results in long part design and fabrication cycles and increased costs.

Disclosure of Invention

In view of this, in order to solve the problems of complex structure, large external volume, high difficulty in installation and debugging and high cost of the optical system of the laser ranging telescope in the prior art, the invention provides an optical system of the laser ranging telescope, which has compact structure and low cost.

The invention solves the problems through the following technical means:

an optical system of a laser range telescope comprises an objective lens, an ocular lens and a beam splitting system arranged in the middle of the objective lens, wherein the beam splitting system comprises a Schmidt prism set arranged on a main optical axis, the Schmidt prism set comprises a first Schmidt prism, a second Schmidt prism and a compensating prism, the first Schmidt prism and the second Schmidt prism both comprise a transmitting and receiving surface, an internal reflecting surface and an external reflecting surface, the compensating prism is connected on the external reflecting surface of the second Schmidt prism, an APD detector and a self-luminous OLED display are arranged outside the compensating prism, the internal reflecting surfaces of the first Schmidt prism and the second Schmidt prism are oppositely arranged, one of the transmitting and receiving surfaces of the first Schmidt prism or the second Schmidt prism is opposite to the objective lens or the ocular lens, the other one of the transmitting and receiving surfaces makes incident light pass through the ocular lens or the objective lens through a reflecting device, and an LCD display is arranged on the path of the incident, the reflecting plane mirror surface or the transmitting plane mirror surface of the Schmidt prism group and the compensating prism are coated with light splitting film layers.

Further, the compensation prism is composed of a right-angle prism, or composed of an oblique-angle prism and a right-angle prism.

Further, the reflecting device is a reflecting plane mirror or a reflecting right-angle prism.

Furthermore, a first Schmitt prism, a second Schmitt prism and a reflecting device are sequentially arranged between the objective lens and the eyepiece along incident light, the incident light enters the Schmitt prism set through the objective lens, emergent light of the Schmitt prism set is reflected by the reflecting device and vertically enters the eyepiece after passing through the LCD, the compensating prism comprises a laser emergent surface and a display incident surface, the display incident surface is parallel to an inner reflecting surface of the second Schmitt prism, the laser emergent surface and the inner reflecting surface of the second Schmitt prism form a 90-degree included angle, the laser emergent surface and the display incident surface also form a 90-degree included angle, the laser enters the APD detector through the first focusing lens set through the laser emergent surface, and the self-luminous OLED display is opposite to the display incident surface through the second focusing lens set.

Furthermore, a first Schmitt prism, a second Schmitt prism and a reflecting device are sequentially arranged between the objective lens and the eyepiece along incident light, the incident light enters the Schmitt prism set through the objective lens, emergent light of the Schmitt prism set is reflected by the reflecting device and vertically enters the eyepiece after passing through the LCD, the compensating prism comprises a laser emergent surface and a display incident surface, a 90-degree included angle is formed between the laser emergent surface and an inner reflecting surface of the second Schmitt prism, a 45-degree included angle is formed between the laser emergent surface and a receiving and emitting surface of the second Schmitt prism, the self-luminous OLED display is opposite to the display incident surface through the second focusing lens set, and the APD detector is opposite to the laser emergent surface through the first focusing lens set.

Furthermore, a reflecting device, a first Schmitt prism and a second Schmitt prism are sequentially arranged between the objective lens and the eyepiece along incident light, the incident light enters the Schmitt prism set through the reflecting device, emergent light of the Schmitt prism set vertically passes through the LCD and then enters the eyepiece, the compensating prism comprises a laser emergent surface and a display incident surface, the display incident surface is parallel to the inner reflecting surface of the second Schmitt prism, a 90-degree included angle is formed between the laser emergent surface and the inner reflecting surface of the second Schmitt prism, a 90-degree included angle is also formed between the laser emergent surface and the display incident surface, the laser enters the APD detector through the focusing of the first focusing lens set through the laser emergent surface, and the self-luminous OLED display is opposite to the display incident surface through the second focusing lens set.

Furthermore, a reflecting device, a first Schmitt prism and a second Schmitt prism are sequentially arranged between the objective lens and the eyepiece along incident light, the incident light enters the Schmitt prism set through the reflecting device, emergent light of the Schmitt prism set vertically passes through the LCD and then enters the eyepiece, the compensating prism comprises a laser emergent surface and a display incident surface, a 90-degree included angle is formed between the laser emergent surface and an inner reflecting surface of the second Schmitt prism, a 45-degree included angle is formed between the laser emergent surface and a receiving and emitting surface of the second Schmitt prism, the self-luminous OLED display is opposite to the display incident surface through the second focusing lens set, and the APD detector is opposite to the laser emergent surface through the first focusing lens set.

Further, the LCD display is arranged between the ocular lens and the reflecting device, the LCD display is arranged right opposite to the ocular lens, and an imaging surface of the LCD display is coincided with the focal plane.

Furthermore, the surface of the compensation prism, which is in contact with the outer reflecting surface of the second schmitt prism, or the outer reflecting surface of the second schmitt prism is plated with a light splitting film layer, and the light splitting film layer is formed by the following two film systems:

1)、λ＝400nm～720nm，R/T＝4:6；λ＝850nm～950nm，T＞98％；

2)、λ＝400nm～620nm，T＞98％；620nm～720nm，R/T＝4:6； λ＝850nm～950nm，T＞98％。

compared with the prior art, the invention has the beneficial effects that at least:

the invention adopts the structure that the internal reflection surfaces of the first Schmidt prism and the second Schmidt prism are opposite, so that the structure is more compact, the internal design of a product is more facilitated, and the layout is convenient. The light rays pass through the objective lens, are reflected by the reflecting plane mirror and then enter the transmitting and receiving surface of the first Schmidt prism to form the aiming optical axis.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 1a is a schematic illustration of a transmission path of a first embodiment of the invention in which a telescope is aimed at the optical axis;

FIG. 1b is a schematic diagram of a transmission path of a laser receiving optical axis according to a first embodiment of the present invention;

FIG. 1c is a schematic diagram of a transmission path of the projection optical axis and the laser emission optical axis of the self-luminous OLED display according to the first embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a second embodiment of the present invention;

FIG. 2a is a schematic diagram of a transmission path of a second embodiment of the invention in which a telescope is aimed at the optical axis;

FIG. 2b is a schematic diagram of a transmission path of a laser receiving optical axis according to a second embodiment of the present invention;

FIG. 2c is a schematic diagram of a transmission path of the projection optical axis and the laser emission optical axis of the self-luminous OLED display according to the second embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a third embodiment of the present invention;

FIG. 3a is a schematic diagram of a transmission path of a sighting axis of a telescope according to a third embodiment of the present invention;

FIG. 3b is a schematic diagram of a transmission path of a laser receiving optical axis according to a third embodiment of the present invention;

FIG. 3c is a schematic diagram of a transmission path of the projection optical axis and the laser emission optical axis of the self-luminous OLED display according to the third embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a fourth embodiment of the present invention;

FIG. 4a is a schematic diagram of a transmission path of a sighting axis of a telescope according to a fourth embodiment of the invention;

FIG. 4b is a schematic diagram of a transmission path of a laser receiving optical axis according to a fourth embodiment of the present invention;

FIG. 4c is a schematic diagram of a transmission path of the projection optical axis and the laser emission optical axis of the self-luminous OLED display according to the fourth embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a fifth embodiment of the present invention;

FIG. 5a is a schematic diagram of a transmission path of a sighting axis of a telescope according to a fifth embodiment of the present invention;

FIG. 5b is a schematic diagram of a transmission path of a laser receiving optical axis according to a fifth embodiment of the present invention;

FIG. 5c is a schematic diagram of a transmission path of the projection optical axis and the laser emission optical axis of the self-luminous OLED display according to the fifth embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a sixth embodiment of the present invention;

FIG. 6a is a schematic diagram of a transmission path of a sighting axis of a telescope according to a sixth embodiment of the invention;

FIG. 6b is a schematic diagram of a transmission path of a laser receiving optical axis according to a sixth embodiment of the present invention;

FIG. 6c is a schematic diagram of a transmission path of the projection optical axis and the laser emission optical axis of the self-luminous OLED display according to the sixth embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a seventh embodiment of the present invention;

FIG. 7a is a schematic diagram of a transmission path of a sighting axis of a telescope according to a seventh embodiment of the invention;

FIG. 7b is a schematic diagram of a transmission path of a laser receiving optical axis according to a seventh embodiment of the present invention;

FIG. 7c is a schematic diagram of a transmission path of the projection optical axis and the laser emission optical axis of the self-luminous OLED display according to the seventh embodiment of the present invention;

FIG. 8 is a schematic structural diagram of an eighth embodiment of the present invention;

FIG. 8a is a schematic diagram of a transmission path of a sighting axis of a telescope according to an eighth embodiment of the invention;

FIG. 8b is a diagram of a transmission path of a laser receiving optical axis according to an eighth embodiment of the present invention;

FIG. 8c is a schematic diagram of a transmission path of the projection optical axis and the laser emission optical axis of the self-luminous OLED display according to the eighth embodiment of the present invention;

description of reference numerals:

11-objective lens 12-first schmitt prism 13-second schmitt prism 14-reflection plane mirror/reflection right-angle prism 15-LCD display 16-eyepiece 21-APD detector 22-first focusing lens group 23-compensation prism 31-self-luminous OLED display 32-second focusing lens group 33-right-angle prism 41-laser 42-collimating lens 121-first schmitt prism transmitting and receiving surface 122-first schmitt prism external reflection surface 123-first schmitt prism internal reflection surface 131-second schmitt prism transmitting and receiving surface 132-second schmitt prism external reflection surface 133-second schmitt prism internal reflection surface 231-compensation prism connecting surface 232-laser exit surface 233-display incident surface.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It should be noted that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

Example 1

In this embodiment, a first structure of an optical system of a laser range finder telescope is provided, as shown in fig. 1, a first schmitt prism 12, a second schmitt prism 13, and a reflective plane mirror 14 are sequentially disposed between an objective lens 11 and an eyepiece 16 along incident light, a transceiving surface 121 of the first schmitt prism faces the objective lens 11, the reflective plane mirror 14 is disposed on an upper side of a transceiving surface 131 of the second schmitt prism and is inclined at 45 degrees, and the incident light passing out of the transceiving surface 131 of the second schmitt prism is reflected by the reflective plane mirror 14 and then vertically enters the eyepiece 16. The compensating prism 23 of the present embodiment includes a laser exit surface 232 and a display entrance surface 233, the laser exit surface 232 is perpendicular to the second schmitt prism internal reflection surface 133, and the laser exit surface 232 and the display entrance surface 233 are perpendicular. The APD detector 21 is opposite to the laser emitting surface 232 through the first focusing lens group 22, the received laser light passes through the connecting surface of the second schmitt prism 13 and the compensating prism 23 to enter the compensating prism 23, the laser emitting surface 232 of the compensating prism and the first focusing lens group 22 are focused and then detected by the APD detector 21, the second focusing lens group 32 is arranged between the self-luminous OLED display 31 and the display incident surface 233, and the light of the self-luminous OLED display 31 passes through the second focusing lens group 32 and then vertically enters the display incident surface 233. The LCD display 15 is disposed between the eyepiece 16 and the reflective flat mirror 14, and the LCD display 15 is disposed opposite the eyepiece 16.

As shown in fig. 1a, where the light is the telescopic collimation optical axis, the light passes through the objective lens 11, the first schmitt prism 12, the second schmitt prism 13 and the reflecting plane mirror 14 and is imaged to the focal plane FS, and the display surface of the LCD display 15 coincides with the focal plane FS, the human eye observes the image of the LCD display 15 and the optical path on the object through the eyepiece 16.

As shown in fig. 1b, where the light is a laser receiving optical axis, the light passes through the objective lens 11, the first schmitt prism 12, the second schmitt prism 13, the compensation prism 23 and the first focusing lens 22 and is received by the APD detector 21.

As shown in fig. 1c, the light is an optical axis projected by the self-luminous OLED display 31, the light passes through the self-luminous OLED display 31, the second focusing lens group 32, the compensating prism 23, the second schmitt prism 13, and the reflecting plane mirror 14 to form an image, and the image plane coincides with the LCD display 15 and the focusing plane FS, and the information of the self-luminous OLED display 31 and the image formed by the telescopic aiming optical axis are simultaneously observed by the human eye through the eyepiece 16.

A light splitting film layer is plated on the surface of the compensating prism connecting surface 231 or the second schmidt prism outer reflecting surface 132, and the light splitting film layer is of the following two film systems:

1)λ＝400nm～720nm，R/T＝4:6；λ＝850nm～950nm，T＞98％；

2)λ＝400nm～620nm，T＞98％；620nm～720nm，R/T＝4:6；λ＝850nm～950nm， T＞98％。

example 2

In this embodiment, a second structure of the optical system of the laser range telescope is provided, as shown in fig. 2, a first schmitt prism 12, a second schmitt prism 13 and a reflection right-angle prism 14 are sequentially disposed between the objective lens 11 and the eyepiece 16 along the incident light, the first schmitt prism transmitting and receiving surface 121 faces the objective lens 11, the reflection right-angle prism 14 is disposed on the upper side of the second schmitt prism transmitting and receiving surface 131 and is inclined at 45 degrees, and the incident light passing out of the second schmitt prism transmitting and receiving surface 131 is reflected by the reflection right-angle prism 14 and then vertically enters the eyepiece 16. The compensating prism 23 of the present embodiment includes a laser emitting surface 232 and a display incident surface 233, the laser emitting surface 232 being perpendicular to the second schmitt prism internal reflection surface 133, the laser emitting surface 232 being perpendicular to the display incident surface 233. The APD detector 21 faces the laser emitting surface 232 through the first focusing lens group 22, the received laser light passes through the connecting surface of the second schmitt prism 13 and the compensating prism 23 and enters the compensating prism 23, the received laser light is focused by the APD detector 21 through the compensating prism laser emitting surface 232 and the first focusing lens group 22, the second focusing lens group 32 is arranged between the self-luminous OLED display 31 and the display incident surface 233, and the light from the self-luminous OLED display 31 vertically enters the display incident surface 233 after passing through the second focusing lens group 32. An LCD display 15 is disposed between the eyepiece 16 and the reflective right angle prism 14, and the LCD display 15 is disposed directly opposite the eyepiece 16.

As shown in fig. 2a, the light is the telescopic collimation optical axis, the light is imaged to the focal plane FS after passing through the objective lens 11, the first schmitt prism 12, the second schmitt prism 13 and the reflection right-angle prism 14, the display surface of the LCD display 15 is overlapped with the focal plane FS, and the human eye observes the LCD display 15 and the image of the optical path on the object through the eyepiece 16.

As shown in fig. 2b, where the light is a laser receiving optical axis, the light passes through the objective lens 11, the first schmitt prism 12, the second schmitt prism 13, the compensation prism 23 and the first focusing lens 22 and is received by the APD detector 21.

As shown in fig. 2c, the light beam is projected from the self-luminous OLED display 31, the light beam is imaged after passing through the self-luminous OLED display 31, the second focusing lens group 32, the compensating prism 23, the second schmitt prism 13 and the reflecting right-angle prism 14, and the image plane thereof coincides with the LCD display 15 and the focusing plane FS, and the information of the self-luminous OLED display 31 and the image formed by the telescopic aiming optical axis are simultaneously observed by the human eye through the eyepiece 16.

1)λ＝400nm～720nm，R/T＝4:6；λ＝850nm～950nm，T＞98％；

example 3

In this embodiment, a third structure of an optical system of a laser range telescope is provided, as shown in fig. 3, a reflective plane mirror 14, a first schmitt prism 12 and a second schmitt prism 13 are sequentially disposed between an objective lens 11 and an eyepiece 16 along incident light, a transceiving surface 131 of the second schmitt prism faces the eyepiece 16, the reflective plane mirror 14 is located under the transceiving surface 121 of the first schmitt prism and is inclined at 45 degrees, and the incident light passing through the transceiving surface 131 of the second schmitt prism vertically enters the eyepiece 16. The compensation prism 23 of the present embodiment includes a laser exit surface 232 and a display entrance surface 233, the laser exit surface 232 being perpendicular to the second schmitt prism internal reflection surface 133, the laser exit surface 232 being perpendicular to the display entrance surface 233. The APD detector 21 is opposite to the laser emitting surface 232 through the first focusing lens group 22, the received laser light passes through the connecting surface of the second schmitt prism 13 and the compensating prism 23 and enters the compensating prism 23, the laser emitting surface 232 of the compensating prism and the first focusing lens group 22 are focused and then detected by the APD detector 21, the second focusing lens group 32 is arranged between the self-luminous OLED display 31 and the display incident surface 233, and the light of the self-luminous OLED display 31 vertically enters the display incident surface 233 after passing through the second focusing lens group 32. The LCD display 15 is disposed between the eyepiece 16 and the reflective flat mirror 14, and the LCD display 15 is disposed opposite the eyepiece 16.

As shown in fig. 3a, where the light is the telescope collimation optical axis, the light passes through the objective lens 11, the reflecting plane mirror 14, the first schmitt prism 12 and the second schmitt prism 13 and is imaged to the focal plane FS, and the display surface of the LCD display 15 coincides with the focal plane FS, the human eye observes the image of the object formed by the LCD display 15 and the optical path through the eyepiece 16.

As shown in fig. 3b, where the light is a laser receiving optical axis, the light passes through the objective lens 11, the first schmitt prism 12, the second schmitt prism 13, the compensation prism 23 and the first focusing lens 22 and is received by the APD detector 21.

As shown in fig. 3c, the light beam is projected from the self-luminous OLED display 31, the light beam passes through the self-luminous OLED display 31, the second focusing lens group 32, the compensating prism 23, the second schmitt prism 13, and the rear image, and the image plane coincides with the LCD display 15 and the focusing plane FS, and the information of the self-luminous OLED display 31 and the image formed by the telescopic aiming optical axis are observed by the human eye through the eyepiece 16.

1)λ＝400nm～720nm，R/T＝4:6；λ＝850nm～950nm，T＞98％；

example 4

In the present embodiment, a fourth structure of the optical system of the laser range telescope is provided, as shown in fig. 4, a reflection right-angle prism 14, a first schmitt prism 12 and a second schmitt prism 13 are sequentially disposed between the objective lens 11 and the eyepiece 16 along the incident light, the receiving and transmitting surface 131 of the second schmitt prism faces the eyepiece 16, the reflection right-angle prism 14 is located under the receiving and transmitting surface 121 of the first schmitt prism and is inclined at 45 degrees, and the incident light passing through the receiving and transmitting surface 131 of the second schmitt prism vertically enters the eyepiece 16. The compensating prism 23 of the present embodiment includes a laser emitting surface 232 and a display incident surface 233, the laser emitting surface 232 being perpendicular to the second schmitt prism internal reflection surface 133, the laser emitting surface 232 being perpendicular to the display incident surface 233. The APD detector 21 is opposite to the laser emitting surface 232 through the first focusing lens group 22, the received laser light passes through the connecting surface of the second schmitt prism 13 and the compensating prism 23 and enters the compensating prism 23, the laser emitting surface 232 of the compensating prism and the first focusing lens group 22 are focused and then detected by the APD detector 21, the second focusing lens group 32 is arranged between the self-luminous OLED display 31 and the display incident surface 233, and the light of the self-luminous OLED display 31 vertically enters the display incident surface 233 after passing through the second focusing lens group 32. The LCD display 15 is disposed between the eyepiece 16 and the reflective right angle prism 14, and the LCD display 15 is disposed directly opposite the eyepiece 16.

As shown in fig. 4a, the light is the telescopic collimation optical axis, the light is imaged to the focal plane FS after passing through the objective lens 11, the reflecting right-angle prism 14, the first schmitt prism 12 and the second schmitt prism 13, the display surface of the LCD display 15 is overlapped with the focal plane FS, and the human eye observes the LCD display 15 and the image of the optical path on the object through the eyepiece 16.

As shown in fig. 4b, where the light is a laser receiving optical axis, the light passes through the objective lens 11, the first schmitt prism 12, the second schmitt prism 13, the compensation prism 23 and the first focusing lens 22 and is received by the APD detector 21.

As shown in fig. 4c, the light beam is projected from the self-luminous OLED display 31, the light beam passes through the self-luminous OLED display 31, the second focusing lens group 32, the compensating prism 23, the second schmitt prism 13, and the rear image, and the image plane coincides with the LCD display 15 and the focusing plane FS, and the information of the self-luminous OLED display 31 and the image formed by the telescopic aiming optical axis are observed by the human eye through the eyepiece 16.

1)λ＝400nm～720nm，R/T＝4:6；λ＝850nm～950nm，T＞98％；

example 5

In this embodiment, a fifth structure of an optical system of a laser range finder telescope is provided, as shown in fig. 5, a first schmitt prism 12, a second schmitt prism 13, and a reflective plane mirror 14 are sequentially disposed between an objective lens 11 and an eyepiece 16 along incident light, a transceiving surface 121 of the first schmitt prism faces the objective lens 11, the reflective plane mirror 14 is disposed on an upper side of a transceiving surface 131 of the second schmitt prism and is inclined at 45 degrees, and the incident light passing out from the transceiving surface 131 of the second schmitt prism is reflected by the reflective plane mirror 14 and then vertically enters the eyepiece 16. In this embodiment, the compensation prism 23 includes a laser emitting surface 232 and a display incident surface, a 90-degree included angle is formed between the laser emitting surface 232 and the second schmitt prism internal reflection surface 133, a 45-degree included angle is formed between the laser emitting surface 232 and the second schmitt prism receiving and transmitting surface 131, the APD detector 21 faces the laser emitting surface 232 through the first focusing lens group 22, the received laser light passes through the connecting surface of the second schmitt prism 13 and the compensation prism 23 and enters the compensation prism 23, the compensation prism laser emitting surface 232 and the first focusing lens group 22 are focused and then detected by the APD detector 21, the second focusing lens group 32 is disposed between the self-luminous OLED display 31 and the display incident surface, and the light of the self-luminous OLED display 31 vertically enters the display incident surface after passing through the second focusing lens group 32. The LCD display 15 is disposed between the eyepiece 16 and the reflective flat mirror 14, and the LCD display 15 is disposed opposite the eyepiece 16.

As shown in fig. 5a, where the light is the telescopic collimation optical axis, the light passes through the objective lens 11, the first schmitt prism 12, the second schmitt prism 13 and the reflecting plane mirror 14 and is imaged to the focal plane FS, and the display surface of the LCD display 15 coincides with the focal plane FS, the human eye observes the image of the object formed by the LCD display 15 and the optical path through the eyepiece 16.

As shown in fig. 5b, where the light is a laser receiving optical axis, the light passes through the objective lens 11, the first schmitt prism 12, the second schmitt prism 13, the compensation prism 23 and the first focusing lens 22 and is received by the APD detector 21.

As shown in fig. 5c, the light beam is projected from the self-luminous OLED display 31, the light beam is imaged after passing through the self-luminous OLED display 31, the second focusing lens group 32, the compensating prism 23, the second schmitt prism 13 and the reflective plane mirror 14, and the image plane thereof coincides with the LCD display 15 and the focusing plane FS, and the information of the self-luminous OLED display 31 and the image formed by the telescopic aiming optical axis are simultaneously observed by the human eye through the eyepiece 16.

1)λ＝400nm～720nm，R/T＝4:6；λ＝850nm～950nm，T＞98％；

example 6

In this embodiment, a sixth structure of an optical system of a laser range telescope is provided, as shown in fig. 6, a first schmitt prism 12, a second schmitt prism 13, and a reflection right-angle prism 14 are sequentially disposed between an objective lens 11 and an eyepiece 16 along incident light, a transmitting and receiving surface 121 of the first schmitt prism faces the objective lens 11, the reflection right-angle prism 14 is disposed on an upper side of a transmitting and receiving surface 131 of the second schmitt prism and is inclined at 45 degrees, and the incident light passing out of the transmitting and receiving surface 131 of the second schmitt prism is reflected by the reflection right-angle prism 14 and then vertically enters the eyepiece 16. In this embodiment, the compensation prism 23 includes a laser emitting surface 232 and a display incident surface, a 90-degree included angle is formed between the laser emitting surface 232 and the second schmitt prism internal reflection surface 133, a 45-degree included angle is formed between the laser emitting surface 232 and the second schmitt prism transmitting and receiving surface 131, the APD detector 21 is opposite to the laser emitting surface 232 through the first focusing lens group 22, the received laser light passes through the connecting surface of the second schmitt prism 13 and the compensation prism 23 and enters the compensation prism 23, the compensation prism laser emitting surface 232 and the first focusing lens group 22 are focused and then detected by the APD detector 21, the second focusing lens group 32 is disposed between the self-luminous OLED display 31 and the display incident surface, and the light from the self-luminous OLED display 31 passes through the second focusing lens group 32 and then vertically enters the display incident surface. The LCD display 15 is disposed between the eyepiece 16 and the reflective right angle prism 14, and the LCD display 15 is disposed directly opposite the eyepiece 16.

As shown in fig. 6a, the light is the telescopic collimation optical axis, the light is imaged to the focal plane FS after passing through the objective lens 11, the first schmitt prism 12, the second schmitt prism 13 and the reflection right-angle prism 14, the display surface of the LCD display 15 is overlapped with the focal plane FS, and the human eye observes the LCD display 15 and the image of the optical path on the object through the eyepiece 16.

As shown in fig. 6b, where the light is a laser receiving optical axis, the light passes through the objective lens 11, the first schmitt prism 12, the second schmitt prism 13, the compensation prism 23 and the first focusing lens 22 and is received by the APD detector 21.

As shown in fig. 6c, the light beam is projected from the self-luminous OLED display 31, the light beam is imaged after passing through the self-luminous OLED display 31, the second focusing lens group 32, the compensating prism 23, the second schmitt prism 13 and the reflecting right-angle prism 14, and the image plane thereof coincides with the LCD display 15 and the focusing plane FS, and the information of the self-luminous OLED display 31 and the image formed by the telescopic aiming optical axis are simultaneously observed by the human eye through the eyepiece 16.

1)λ＝400nm～720nm，R/T＝4:6；λ＝850nm～950nm，T＞98％；

example 7

In this embodiment, a seventh structure of an optical system of a laser range telescope is provided, as shown in fig. 7, a reflective plane mirror 14, a first schmitt prism 12 and a second schmitt prism 13 are sequentially disposed between an objective lens 11 and an eyepiece 16 along incident light, a transceiving surface 131 of the second schmitt prism faces the eyepiece 16, the reflective plane mirror 14 is located at a lower side of the transceiving surface 121 of the first schmitt prism and is inclined at 45 degrees, and the incident light passing through the transceiving surface 131 of the second schmitt prism vertically enters the eyepiece 16. In this embodiment, the compensation prism 23 includes a laser emitting surface 232 and a display incident surface, a 90-degree included angle is formed between the laser emitting surface 232 and the second schmitt prism internal reflection surface 133, a 45-degree included angle is formed between the laser emitting surface 232 and the second schmitt prism transmitting and receiving surface 131, the APD detector 21 faces the laser emitting surface 232 through the first focusing lens group 22, the received laser light passes through the connecting surface of the second schmitt prism 13 and the compensation prism 23 and enters the compensation prism 23, the compensation prism laser emitting surface 232 and the first focusing lens group 22 focus and then is detected by the APD detector 21, the second focusing lens group 32 is disposed between the self-emitting OLED display 31 and the display incident surface, and the light of the self-emitting OLED display 31 vertically enters the display incident surface after passing through the second focusing lens group 32. The LCD display 15 is disposed between the eyepiece 16 and the reflective flat mirror 14, and the LCD display 15 is disposed directly opposite the eyepiece 16.

As shown in fig. 7a, where the light is the telescope collimation optical axis, the light passes through the objective lens 11, the reflecting plane mirror 14, the first schmitt prism 12 and the second schmitt prism 13 and is imaged to the focal plane FS, and the display surface of the LCD display 15 coincides with the focal plane FS, the human eye observes the image of the object formed by the LCD display 15 and the optical path through the eyepiece 16.

As shown in fig. 7b, where the light is a laser receiving optical axis, the light passes through the objective lens 11, the first schmitt prism 12, the second schmitt prism 13, the compensation prism 23 and the first focusing lens 22 and is received by the APD detector 21.

As shown in fig. 7c, the light beam is projected from the self-luminous OLED display 31, the light beam passes through the self-luminous OLED display 31, the second focusing lens group 32, the compensating prism 23, the second schmitt prism 13, and the rear image, and the image plane coincides with the LCD display 15 and the focusing plane FS, and the information of the self-luminous OLED display 31 and the image formed by the telescopic aiming optical axis are observed by the human eye through the eyepiece 16.

1)λ＝400nm～720nm，R/T＝4:6；λ＝850nm～950nm，T＞98％；

example 8

In this embodiment, an eighth structure of an optical system of a laser range telescope is provided, as shown in fig. 8, a reflection right-angle prism 14, a first schmitt prism 12 and a second schmitt prism 13 are sequentially disposed along incident light between an objective lens 11 and an eyepiece 16, a transmitting and receiving surface 131 of the second schmitt prism faces the eyepiece 16, the reflection right-angle prism 14 is located at a lower side of the transmitting and receiving surface 121 of the first schmitt prism and is inclined at 45 degrees, and the incident light passing through the transmitting and receiving surface 131 of the second schmitt prism vertically enters the eyepiece 16. In this embodiment, the compensation prism 23 includes a laser emitting surface 232 and a display incident surface, a 90-degree included angle is formed between the laser emitting surface 232 and the second schmitt prism internal reflection surface 133, a 45-degree included angle is formed between the laser emitting surface 232 and the second schmitt prism receiving and emitting surface 131, the APD detector 21 is over against the laser emitting surface 232 through the first focusing lens group 22, the received laser light passes through the connecting surface of the second schmitt prism 13 and the compensation prism 23 and enters the compensation prism 23, the compensation prism laser emitting surface 232 and the first focusing lens group 22 are focused and then detected by the APD detector 21, the second focusing lens group 32 is disposed between the self-luminous OLED display 31 and the display incident surface, and the light from the self-luminous OLED display 31 passes through the second focusing lens group 32 and then vertically enters the display incident surface. The LCD display 15 is disposed between the eyepiece 16 and the reflective right angle prism 14, and the LCD display 15 is disposed directly opposite the eyepiece 16.

As shown in fig. 8a, the light is the telescopic collimation optical axis, the light is imaged to the focal plane FS after passing through the objective lens 11, the reflecting right-angle prism 14, the first schmitt prism 12 and the second schmitt prism 13, the display surface of the LCD display 15 is overlapped with the focal plane FS, and the human eye observes the LCD display 15 and the image of the optical path on the object through the eyepiece 16.

As shown in fig. 8b, where the light is a laser receiving optical axis, the light passes through the objective lens 11, the first schmitt prism 12, the second schmitt prism 13, the compensation prism 23, and the first focusing lens 22 and is received by the APD detector 21.

As shown in fig. 8c, the light beam is projected from the self-luminous OLED display 31, the light beam passes through the self-luminous OLED display 31, the second focusing lens group 32, the compensating prism 23, the second schmitt prism 13, and the rear image, and the image plane coincides with the LCD display 15 and the focusing plane FS, and the information of the self-luminous OLED display 31 and the image formed by the telescopic aiming optical axis are observed by the human eye through the eyepiece 16.

1)λ＝400nm～720nm，R/T＝4:6；λ＝850nm～950nm，T＞98％；

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An optical system of a laser range telescope is characterized by comprising an objective lens, an ocular lens and a beam splitting system arranged in the middle of the objective lens and the ocular lens, wherein the beam splitting system comprises a Schmidt prism group arranged on a main optical axis, the Schmidt prism group comprises a first Schmidt prism, a second Schmidt prism and a compensating prism, the first Schmidt prism and the second Schmidt prism respectively comprise a transmitting and receiving surface, an internal reflecting surface and an external reflecting surface, the compensating prism is connected on the external reflecting surface of the second Schmidt prism, an APD detector and a self-luminous OLED display are arranged outside the compensating prism, the internal reflecting surfaces of the first Schmidt prism and the second Schmidt prism are oppositely arranged, one of the transmitting and receiving surfaces of the first Schmidt prism or the second Schmidt prism is opposite to the objective lens or the ocular lens, the other one of the transmitting and receiving surfaces makes incident light pass through the ocular lens or the objective lens through a reflecting device, and an LCD display is arranged on the path, the reflecting plane mirror surface or the transmitting plane mirror surface of the Schmidt prism group and the compensating prism are coated with light splitting film layers.

2. The optical system of the laser range telescope of claim 1, wherein the compensation prism is comprised of a right angle prism or a bevel angle prism and a right angle prism.

3. The optical system of a laser range telescope of claim 1, wherein said reflecting means is a reflecting mirror or a reflecting rectangular prism.

4. The optical system of the laser range telescope of claim 1, a first Schmitt prism, a second Schmitt prism and a reflecting device are sequentially arranged between the objective lens and the ocular lens along incident light, the incident light enters the Schmitt prism group through the objective lens, emergent light of the Schmitt prism group is reflected by the reflecting device and vertically passes through the LCD and then enters the ocular lens, the compensation prism comprises a laser emergent surface and a display incident surface, the display incident surface is parallel to the second Schmidt prism internal reflection surface, the laser emitting surface and the second Schmidt prism internal reflection surface form a 90-degree included angle, the laser emitting surface and the display incident surface also form a 90-degree included angle, laser enters the APD detector through the laser emitting surface and is focused through the first focusing lens group, and the self-luminous OLED display is opposite to the display incident surface through the second focusing lens group.

5. The optical system of a laser range telescope according to claim 1, wherein a first schmitt prism, a second schmitt prism, and a reflection device are sequentially disposed along an incident light beam between the objective lens and the eyepiece lens, the incident light beam enters the schmitt prism set through the objective lens, an emergent light beam of the schmitt prism set is reflected by the reflection device to vertically pass through the LCD display and then enter the eyepiece lens, the compensation prism includes a laser emergent surface and a display incident surface, a 90 degree angle is formed between the laser emergent surface and the second schmitt prism internal reflection surface, a 45 degree angle is formed between the laser emergent surface and the second schmitt prism receiving surface, the self-luminous OLED display faces the display incident surface through the second focusing lens group, and the APD detector faces the laser emergent surface through the first focusing lens group.

6. The optical system of the laser range telescope of claim 1, a reflecting device, a first Schmitt prism and a second Schmitt prism are sequentially arranged between the objective lens and the eyepiece along incident light, the incident light enters the Schmitt prism group through the reflecting device, emergent light of the Schmitt prism group vertically passes through the LCD and then enters the eyepiece, the compensation prism comprises a laser emergent surface and a display incident surface, the display incident surface is parallel to the second Schmidt prism internal reflection surface, the laser emitting surface and the second Schmidt prism internal reflection surface form a 90-degree included angle, the laser emitting surface and the display incident surface also form a 90-degree included angle, laser enters the APD detector through the laser emitting surface and is focused through the first focusing lens group, and the self-luminous OLED display is opposite to the display incident surface through the second focusing lens group.

7. The optical system of a laser range telescope according to claim 1, wherein a reflection device, a first schmitt prism and a second schmitt prism are sequentially disposed along the incident light between the objective lens and the eyepiece, the incident light enters the schmitt prism set through the reflection device, the emergent light of the schmitt prism set vertically passes through the LCD display and then enters the eyepiece, the compensation prism comprises a laser emergent surface and a display incident surface, a 90-degree angle is formed between the laser emergent surface and the internal reflection surface of the second schmitt prism, a 45-degree angle is formed between the laser emergent surface and the receiving surface of the second schmitt prism, the self-luminous OLED display faces the display incident surface through the second focusing lens set, and the APD detector faces the laser emergent surface through the first focusing lens set.

8. The optical system of claim 1, wherein the LCD display is disposed between the eyepiece and the reflector, and wherein the LCD display is disposed opposite the eyepiece, and wherein the image plane of the LCD display coincides with the focal plane.

9. The optical system of a laser range telescope of claim 1, wherein the surface of the compensating prism in contact with the outer reflective surface of the second schmitt prism or the outer reflective surface of the second schmitt prism is coated with a light splitting film, and the light splitting film is formed by two film systems:

1)、λ＝400nm～720nm，R/T＝4:6；λ＝850nm～950nm，T＞98％；

2)、λ＝400nm～620nm，T＞98％；620nm～720nm，R/T＝4:6；λ＝850nm～950nm，T＞98％。