CN109387847B - Optical beam splitting system of laser ranging telescope - Google Patents
Optical beam splitting system of laser ranging telescope Download PDFInfo
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- CN109387847B CN109387847B CN201811108303.XA CN201811108303A CN109387847B CN 109387847 B CN109387847 B CN 109387847B CN 201811108303 A CN201811108303 A CN 201811108303A CN 109387847 B CN109387847 B CN 109387847B
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- laser
- half pentaprism
- display
- pentaprism
- incident surface
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C3/00—Measuring distances in line of sight; Optical rangefinders
- G01C3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
Abstract
The invention relates to an optical beam splitting system of a laser ranging telescope. The problems of complex structure, large appearance volume, high installation and debugging difficulty and high cost of a laser ranging telescope light beam splitting system in the prior art are solved. The system comprises an objective lens and an eyepiece lens, wherein a roof half pentaprism, a half pentaprism and a compensating prism are arranged between the objective lens and the eyepiece lens, the roof half pentaprism and the half pentaprism both comprise a receiving and transmitting surface, an internal reflecting surface, an external reflecting surface and a bottom surface, the compensating prism is connected to the external reflecting surface of the half pentaprism, a laser and a self-luminous OLED display are arranged on the outer side of the compensating prism, the internal reflecting surface of the roof half pentaprism is opposite to the internal reflecting surface of the half pentaprism, one of the receiving and transmitting surfaces of the roof half pentaprism or the half pentaprism is opposite to the objective lens or the eyepiece lens, the other of the receiving and transmitting faces of the roof half pentaprism or the half pentaprism enables incident light to pass through the eyepiece lens or the objective lens through the reflecting mirror, and an LCD display is arranged on the path of the incident light. The invention has more compact structure, is more beneficial to the internal design of the product structure and is convenient for layout.
Description
Technical Field
The invention relates to the technical field of laser ranging, in particular to an optical beam splitting system of a laser ranging telescope.
Background
The existing laser ranging telescope is limited by the beam splitter structure, so that a plurality of unsatisfactory places exist. Firstly, most of the optical beam splitter is complex in structure, large in appearance or volume, high in installation and debugging difficulty, high in control difficulty on a path of optical beam split transmission, and low in stability. Secondly, the beam splitter and associated components often need to be specially designed and manufactured, the part design and manufacturing cycle is long, and the cost is high.
Disclosure of Invention
The invention mainly solves the problems of complex structure, large size, high installation and debugging difficulty and high cost of a laser ranging telescope optical beam splitting system in the prior art, and provides a compact laser ranging telescope optical beam splitting system.
The technical problems of the invention are mainly solved by the following technical proposal: the utility model provides a laser range finding telescope optical beam splitting system, includes objective and eyepiece, is provided with roof half pentaprism, half pentaprism and compensation prism between objective and eyepiece, roof half pentaprism and half pentaprism all include receiving and dispatching face, internal reflection face, external reflection face and bottom surface, compensation prism connects on the external reflection face of half pentaprism, is provided with laser instrument and self-luminous OLED display in the compensation prism outside, roof half pentaprism's internal reflection face sets up with half pentaprism's internal reflection face relatively, roof half pentaprism and half pentaprism's receiving and dispatching face, one of them just faces objective/eyepiece, and another is opposite with eyepiece/objective after the speculum reflection, is provided with the LCD display on the route of incident light. The invention adopts the structure that the roof half pentaprism and the inner reflecting surface of the half pentaprism are opposite, so that the structure is more compact, the internal design of the product structure is more facilitated, and the layout is convenient. The light passes through the objective lens, is reflected by the reflector and enters the receiving and transmitting surface of the roof half pentaprism or the half pentaprism to form a sighting optical axis.
As a preferable scheme, the reflector, the half pentaprism and the roof half pentaprism are sequentially arranged between the objective lens and the ocular lens along incident light rays, the receiving and transmitting surface of the half pentaprism is opposite to the ocular lens, the incident light rays vertically enter the receiving and transmitting surface of the roof half pentaprism after passing through the objective lens and being reflected by the reflector, the compensating prism comprises a laser incident surface and a display incident surface, the laser incident surface is parallel to the internal reflecting surface of the half pentaprism, the display incident surface is parallel to the receiving and transmitting surface of the half pentaprism, an included angle of 45 degrees is formed between the laser incident surface and the display incident surface, the laser is opposite to the laser incident surface through a focusing lens, a second reflector and a focusing lens group are arranged between the self-luminous OLED display and the display incident surface, and the display light rays vertically enter the display incident surface after being reflected by the second reflector and passing through the focusing lens group. In the aiming optical axis, light rays are imaged to a focal plane FS after passing through an objective lens, a reflector, a roof half-pentaprism and a half-pentaprism. In the laser emission optical axis, light rays are directed to a measured target after passing through a focusing lens, a compensating prism, a half-pentaprism, a roof half-pentaprism and a reflecting mirror, and the light rays pass through a receiving and transmitting surface after being reflected twice by an outer reflecting surface and an inner reflecting surface in the roof half-pentaprism. In the projection optical axis of the self-luminous OLED display, light rays are imaged after passing through a reflecting mirror, a focusing lens group, a compensating prism and a half-pentaprism, an imaging surface coincides with a focal plane FS, and the light rays are reflected in the compensating prism through a laser incident surface and enter the half-pentaprism.
As a preferable scheme, a detector and a focusing objective lens are further arranged on the other side of the second reflecting mirror, and light rays penetrate through the focusing objective lens, are reflected by the second reflecting mirror and enter the detector. The two sides of the second reflecting mirror are provided with reflecting layers, and the two sides can reflect light.
As a preferable scheme, the reflector, the half pentaprism and the roof half pentaprism are sequentially arranged between the objective lens and the ocular lens along incident light, the receiving and transmitting surface of the half pentaprism is opposite to the ocular lens, the incident light passes through the objective lens and is reflected by the reflector to vertically enter the receiving and transmitting surface of the roof half pentaprism, the compensating prism comprises an incident surface and a reflecting surface, an included angle of 45 degrees is formed between the incident surface and the reflecting surface in the half pentaprism, an included angle of 112.5 degrees is formed between the reflecting surface and the half pentaprism, an included angle of 22.5 degrees is formed between the incident surface and the reflecting surface, the laser is opposite to the incident surface through the focusing lens, and the self-luminous OLED display is opposite to the incident surface. In the aiming optical axis, light rays are imaged to a focal plane FS after passing through an objective lens, a reflecting mirror, a roof half-pentaprism and a half-pentaprism. In the laser emission optical axis, light rays are directed to a measured object after passing through a focusing lens, a compensating prism, a half-pentaprism, a roof half-pentaprism and a reflecting mirror, wherein the light rays are reflected twice by a reflecting surface and an incident surface in the compensating prism. In the projection optical axis of the self-luminous OLED display, light rays are imaged to a focal plane FS after passing through a compensation prism and a half-pentaprism.
As a preferable scheme, the reflector, the half pentaprism and the roof half pentaprism are sequentially arranged between the objective lens and the ocular lens along incident light rays, the receiving and transmitting surface of the roof half pentaprism is opposite to the ocular lens, the incident light rays vertically enter the receiving and transmitting surface of the half pentaprism after passing through the objective lens and being reflected by the reflector, the compensating prism comprises a laser incident surface and a display incident surface, the laser incident surface is parallel to the receiving and transmitting surface of the half pentaprism, the display incident surface is parallel to the inner transmitting surface of the half pentaprism, an included angle of 45 degrees is formed between the laser incident surface and the display incident surface, the laser is opposite to the laser incident surface through a focusing lens, a focusing lens group and a second reflecting mirror are arranged between the self-luminous OLED display and the display incident surface, and the display light rays vertically enter the display incident surface after passing through the focusing lens group and being reflected by the second reflecting mirror. In the aiming optical axis, light rays are imaged to a focal plane FS after passing through an objective lens, a reflecting mirror, a half-pentaprism and a roof half-pentaprism. In the laser emission optical axis, light rays are directed to a measured target after passing through a focusing lens, a compensating prism, a plate pentaprism and a reflecting mirror, wherein the light rays are reflected in the compensating prism through an incidence surface of a display and enter the half pentaprism. In the projection optical axis of the self-luminous OLED display, light rays are imaged to a focal surface FS after passing through a focusing lens group, a second reflecting mirror, a compensating prism, a half-pentaprism and a roof half-pentaprism.
As a preferable scheme, the half pentaprism, the roof half pentaprism and the reflecting mirror are sequentially arranged between the objective lens and the ocular lens along the incident light, the receiving and transmitting surface of the half pentaprism is opposite to the objective lens, the incident light passing through the receiving and transmitting surface of the roof half pentaprism vertically enters the ocular lens after being reflected by the reflecting mirror, the compensating prism comprises a laser incident surface and a display incident surface, the laser incident surface is parallel to the receiving and transmitting surface of the half pentaprism, the display incident surface is parallel to the internal transmitting surface of the half pentaprism, an included angle of 45 degrees is formed between the laser incident surface and the display incident surface, the laser is opposite to the laser incident surface through the focusing lens, the laser light enters the half pentaprism after being reflected by the display incident surface, a second reflecting mirror and a focusing lens group are arranged between the self-luminous OLED display and the display incident surface, and the display light vertically enters the display incident surface after passing through the focusing lens group after being reflected by the second reflecting mirror;
or the compensating prism comprises a laser incidence surface and a laser reflection surface, wherein the laser incidence surface is parallel to the semi-pentaprism house, the laser reflection surface is parallel to the bottom surface, an included angle of 45 degrees is formed between the laser incidence surface and the laser reflection surface, the laser faces the laser incidence surface through the focusing lens, laser light enters the semi-pentaprism after being reflected by the laser reflection surface, the self-luminous OLED display is positioned at the other side of the reflecting mirror opposite to the ocular, the self-luminous OLED display faces the ocular through the focusing lens group, and display light vertically enters the ocular after passing through the reflecting mirror.
In the aiming optical axis, light rays are imaged to a focal plane FS after passing through an objective lens, a half-pentaprism, a roof half-pentaprism and a reflecting mirror. In the laser emission optical axis, light rays are directed to a measured target after passing through a focusing lens, a compensating prism and a half-pentaprism, wherein the light rays enter the half-pentaprism after being reflected by an incidence surface of a display in the compensating prism; in the projection optical axis of the self-luminous OLED display, light rays are imaged to a focal plane FS after passing through a second reflecting mirror, a focusing lens group, a compensating prism, a half-pentaprism, a roof half-pentaprism and a reflecting mirror. Or in the projection optical axis of the self-luminous OLED display, the light rays are imaged to a focal plane FS after passing through a focusing lens group and a reflecting mirror.
As a preferable scheme, the roof half pentaprism, the half pentaprism and the reflecting mirror are sequentially arranged between the objective lens and the ocular lens along incident light rays, the receiving and transmitting surface of the roof half pentaprism is opposite to the objective lens, the incident light rays penetrating through the receiving and transmitting surface of the half pentaprism vertically enter the ocular lens after being reflected by the reflecting mirror, the compensating prism comprises a laser incident surface and a display incident surface, the laser incident surface is parallel to the internal reflecting surface of the roof half pentaprism, the display incident surface is parallel to the receiving and transmitting surface of the half pentaprism, an included angle of 45 degrees is formed between the laser incident surface and the display incident surface, the laser is opposite to the laser incident surface through the focusing lens, the self-luminous OLED display is opposite to the display incident surface, and the display light rays vertically enter the display incident surface after passing through the focusing lens group. In the aiming optical axis in the scheme, light rays are imaged to a focal plane FS after passing through an objective lens, a roof half-pentaprism, a half-pentaprism and a reflecting mirror. In the laser emission optical axis, light rays are directed to a measured target after passing through a focusing lens, a compensating prism, a half-pentaprism and a roof half-pentaprism. In the projection optical axis of the self-luminous OLED display, light rays are imaged to a focal plane FS after passing through a focusing lens group, a compensating prism, a half-pentaprism and a reflecting mirror.
As a preferable scheme, the LCD display is arranged opposite to the ocular, and the imaging surface of the LCD display is coincident with the focal surface; or the LCD display is positioned between the half pentaprism internal reflection surface and the roof half pentaprism internal reflection surface, and is respectively parallel to the half pentaprism internal reflection surface and the roof half pentaprism internal reflection surface, and the LCD display imaging surface is overlapped with the focal plane. In the projection optical axis of the self-luminous OLED display, light is imaged to a focal plane, and the focal plane is overlapped with an imaging plane of the LCD display, namely, the self-luminous OLED display displays information, the LCD display displays information, and an image formed by aiming the optical axis is simultaneously observed by human eyes through an ocular lens.
As a preferable scheme, the surface of the compensating prism, which is contacted with the outer reflecting surface of the half pentaprism, or the outer reflecting surface of the half pentaprism 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%；λ=620nm-720nm，R/T=4:6；λ=850nm-950nm，T>98%。
therefore, the invention has the advantages that: the roof half pentaprism and the half pentaprism inner reflecting surface are opposite to each other, so that the structure is more compact, the internal design of the product structure is facilitated, and the layout is convenient.
Drawings
FIG. 1 is a schematic view of a first embodiment of the present invention;
FIG. 1a is a schematic view of a transmission path of the sighting optical axis of a telescope in a first embodiment of the present invention;
FIG. 1b is a schematic view of a transmission path of a laser transmitting or receiving optical axis according to a first embodiment of the present invention;
FIG. 1c is a schematic diagram showing a transmission path of a projection optical axis and a laser receiving optical axis of a self-luminous OLED display according to a first embodiment of the present invention;
FIG. 2 is a schematic view of a second embodiment of the present invention;
FIG. 2a is a schematic view of a transmission path of the sighting optical axis of a telescope according to a second embodiment of the present invention;
FIG. 2b is a schematic diagram of a transmission path of a laser transmitting or receiving optical axis according to a second embodiment of the present invention;
FIG. 2c is a schematic diagram showing a transmission path of an optical axis projected by the self-luminous OLED display according to the second embodiment of the present invention;
FIG. 3 is a schematic view of a third embodiment of the present invention;
FIG. 3a is a schematic view of a transmission path of the sighting optical axis of a telescope according to a third embodiment of the present invention;
FIG. 3b is a schematic view of a transmission path of a laser transmitting or receiving optical axis according to a third embodiment of the present invention;
FIG. 3c is a schematic diagram showing a transmission path of an optical axis projected by the self-luminous OLED display according to the third embodiment of the present invention;
FIG. 4 is a schematic view of a fourth embodiment of the present invention;
FIG. 4a is a schematic view of a transmission path of the sighting optical axis of a telescope according to a fourth embodiment of the present invention;
FIG. 4b is a schematic diagram of a transmission path of a laser transmitting or receiving optical axis according to a fourth embodiment of the present invention;
FIG. 4c is a schematic diagram showing a transmission path of an optical axis projected by the self-luminous OLED display according to the fourth embodiment of the present invention;
FIG. 4d is a schematic diagram of another transmission path of the laser transmitting or receiving axis according to a fourth embodiment of the present invention;
FIG. 4e is a schematic diagram showing another transmission path of the projected optical axis of the self-luminous OLED display according to the fourth embodiment of the present invention;
FIG. 5 is a schematic view of a fifth embodiment of the present invention;
FIG. 5a is a schematic view of a transmission path of the sighting optical axis of a telescope according to a fifth embodiment of the present invention;
FIG. 5b is a schematic view of a transmission path of a laser transmitting optical axis or 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 projected optical axis of the self-luminous OLED display according to the fifth embodiment of the present invention.
11-objective 12-reflector 13-roof half pentaprism 14-half pentaprism 15-LCD display 16-eyepiece 21-laser 22-focusing lens 23-compensating prism 31-self-luminous OLED display 32-second reflector 33-focusing lens group 41-detector.
Detailed Description
The technical scheme of the invention is further specifically described below through examples and with reference to the accompanying drawings.
The optical beam splitting system of the laser ranging telescope comprises an objective lens 11 and an eyepiece lens 16, wherein a roof half pentaprism 13, a half pentaprism 14 and a compensating prism are arranged between the objective lens and the eyepiece lens, the roof half pentaprism comprises a receiving and transmitting surface 131, an internal reflecting surface 133, an external reflecting surface 132 and a bottom surface 134, and the half pentaprism comprises a receiving and transmitting surface 142, an internal reflecting surface 143, an external reflecting surface 141 and a bottom surface 144. The compensating prism is connected to the outer reflecting surface 141 of the half pentaprism, the laser 21 and the self-luminous OLED display 31 are disposed outside the compensating prism, the inner reflecting surface 133 of the roof half pentaprism is disposed opposite to the inner reflecting surface 143 of the half pentaprism, one of the receiving and transmitting surface 131 of the roof half pentaprism and the receiving and transmitting surface 142 of the half pentaprism faces the objective/eyepiece, the other is opposite to the eyepiece/objective after being reflected by the reflecting mirror 12, and the LCD display 15 is disposed on the path of incident light.
Example 1:
the first structure of the optical beam splitting system of the laser ranging telescope is shown in this embodiment, as shown in fig. 1, a reflecting mirror 12, a roof half pentaprism 13 and a half pentaprism 14 are sequentially arranged between an objective lens 11 and an eyepiece 16 along incident light, the receiving and transmitting surface of the half pentaprism faces the eyepiece, an LCD display 15 is arranged between the receiving and transmitting surface of the half pentaprism and the eyepiece, the reflecting mirror is positioned at the lower side of the receiving and transmitting surface of the roof half pentaprism and is obliquely arranged at 45 degrees, the objective lens is aligned to the reflecting mirror, and the incident light passes through the objective lens and vertically enters the receiving and transmitting surface of the roof half pentaprism after being reflected by the reflecting mirror. The compensation prism 23 of this embodiment includes a laser light incident surface 232, a display light incident surface 231, and a connection surface 233, and the connection surface 233 and the half-pentaprism outer reflection surface 141 are glued together by glue. The laser incidence surface 232 is parallel to the inner reflection surface 143 of the half pentaprism, the display incidence surface 231 is parallel to the receiving and transmitting surface 142 of the half pentaprism, an included angle of 45 degrees is formed between the laser incidence surface and the display incidence surface, the laser faces the laser incidence surface through the focusing lens, the second reflection mirror 32 and the focusing lens group 33 are arranged between the self-luminous OLED display and the display incidence surface, and display light is reflected by the second reflection mirror and vertically enters the display incidence surface after passing through the focusing lens group. The other side of the second reflecting mirror is also provided with a detector 41 and a focusing objective 42, and the light rays pass through the focusing objective and enter the detector after being reflected by the second reflecting mirror.
As shown in fig. 1A, 1A is a telescope sighting optical axis, light is imaged to a focal plane FS after passing through an objective lens 11, a reflecting mirror 12, a roof half pentaprism 13 and a half pentaprism 14, and a liquid crystal display surface of an LCD display 15 coincides with the focal plane FS, and a human eye observes the LCD display and an image of an object formed by the light paths through an eyepiece 16.
As shown in fig. 1B, 1B is a laser emission optical axis, or may be a laser receiving optical axis, where light is directed to a measured object after passing through a laser 21, a focusing lens 22, a compensating prism 23, a half pentaprism 14, a roof half pentaprism 13, a reflecting mirror 12, and an objective lens 11.
As shown in fig. 1C, 1C is a projection optical axis of the self-luminous OLED display, and the light is imaged after passing through the self-luminous OLED display 31, the second reflecting mirror 32, the focusing lens group 33, the compensating prism 23, and the half-pentaprism 14, the image plane coincides with the LCD display 15 and the focal plane FS, and the display information of the self-luminous OLED display, the display information of the LCD display, and the image formed by the telescope aiming optical axis 1A are simultaneously observed by human eyes through an eyepiece. In addition, 1D is a laser receiving optical axis, and may be a laser emitting optical axis.
The surface of the compensation prism connection surface 233 or the outer reflection surface 141 of the half pentaprism is plated with a light-splitting film layer, 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%；λ=620nm-720nm，R/T=4:6；λ=850nm-950nm，T>98%。
example 2:
in this embodiment, a second structure of an optical beam splitting system of a laser ranging telescope is provided, as shown in fig. 2, between an objective lens 11 and an eyepiece 16, a reflecting mirror 12, a roof half pentaprism 13 and a half pentaprism 14 are sequentially arranged along the incident light, the receiving and transmitting surface of the half pentaprism faces the eyepiece, and an LCD display 15 is arranged between the inner reflecting surface 143 of the half pentaprism and the inner reflecting surface 133 of the roof half pentaprism and parallel to the inner reflecting surface of the half pentaprism. The reflector is positioned at the lower side of the roof half pentaprism receiving and transmitting surface and is obliquely arranged at 45 degrees, the objective is aligned to the reflector, and incident light passes through the objective and is reflected by the reflector to vertically enter the roof half pentaprism receiving and transmitting surface. The compensating prism 24 of the present embodiment includes an incident surface 242, a reflecting surface 241 and a connecting surface 243, and the connecting surface 243 and the outer reflecting surface 141 of the half pentaprism are glued together by glue. An included angle of 45 degrees is formed between the incident surface 242 and the inner reflecting surface 143 of the half pentaprism, an included angle of 112.5 degrees is formed between the reflecting surface 241 and the transmitting and receiving surface 142 of the half pentaprism, an included angle of 22.5 degrees is formed between the incident surface and the reflecting surface, the laser faces the incident surface through the focusing lens 22, and the self-luminous OLED display faces the incident surface.
As shown in fig. 2A, 2A is a telescope sighting optical axis, light is imaged to a focal plane FS through an objective lens 11, a reflecting mirror 12 and a roof half pentaprism 13, a display surface of the LCD display coincides with the focal plane FS, and a human eye observes an image of an object formed by the LCD display 15 and the above-mentioned light path through a half pentaprism 14 and an eyepiece 16. Alternatively, the LCD display 15 may be disposed directly in front of the eyepiece.
As shown in fig. 2B, 2B is a laser emission optical axis, or may be a laser receiving optical axis, where light is directed to the measured object after passing through the laser 21, the focusing lens 22, the compensating prism 24, the half pentaprism 14, the roof half pentaprism 13, the reflecting mirror 12, and the objective lens 11. Wherein the light rays are twice reflected in the compensation prism 24 by the reflecting surface 241 and the entrance surface 242.
As shown in fig. 2C, where 2C is the projected optical axis of the self-luminous OLED display, the light enters the human eye after passing through the self-luminous OLED display 31, the compensation prism 24, the half pentaprism 14 and the eyepiece 16, and since the optical path from the self-luminous OLED display to the outer reflection surface of the half pentaprism is the same as the optical path from the focal plane to the outer reflection surface of the half pentaprism, that is, the position of the self-luminous OLED display is equal to the focal plane FS, and the LCD display coincides with the focal plane FS, the human eye can see the information of the LCD display, the self-luminous OLED display and the image formed by the aiming optical axis of the 2A telescope through the eyepiece 16, the half pentaprism 14 and the compensation prism 24.
The surface of the compensation prism connection surface 243 or the outer reflection surface 141 of the half pentaprism is plated with a light-splitting film layer, 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%；λ=620nm-720nm，R/T=4:6；λ=850nm-950nm，T>98%。
example 3:
the third structure of the optical beam splitting system of the laser ranging telescope is provided in this embodiment, as shown in fig. 3, a reflecting mirror 12, a half pentaprism 14 and a roof half pentaprism 13 are sequentially disposed between an objective lens 11 and an eyepiece 16 along the incident light, a receiving and transmitting surface 131 of the roof half pentaprism faces the eyepiece, an LCD display 15 is disposed between the receiving and transmitting surface of the roof half pentaprism and the eyepiece, the reflecting mirror is disposed at the lower side of the receiving and transmitting surface of the half pentaprism and is disposed at an angle of 45 degrees, and the objective lens is aligned with the reflecting mirror. The incident light passes through the objective lens and is reflected by the reflecting mirror to vertically enter the half pentaprism receiving and transmitting surface.
The compensation prism 25 of this embodiment includes a laser light incident surface 251, a display light incident surface 252, and a connection surface 253, and the connection surface 253 and the half-pentaprism outer reflection surface 141 are glued together by glue. The laser incidence plane 251 is parallel to the half-pentaprism transceiver plane 142, the display incidence plane 252 is parallel to the half-pentaprism internal emission plane 143, an included angle of 45 degrees is formed between the laser incidence plane and the display incidence plane, the laser faces the laser incidence plane through the focusing lens, the focusing lens group 33 and the second reflecting mirror 32 are arranged between the self-luminous OLED display and the display incidence plane, and display light rays pass through the focusing lens group 33 and then are reflected by the second reflecting mirror to vertically enter the display incidence plane.
As shown in fig. 3A, 3A is a telescope sighting optical axis, light is imaged to a focal plane FS through an objective lens 11, a reflecting mirror 12, a half pentaprism 14 and a roof half pentaprism 13, and a liquid crystal display surface of an LCD display 15 coincides with the focal plane FS, and a human eye observes the LCD display and an image of an object formed by the light path through an eyepiece 16.
As shown in fig. 3B, 3B is a laser emission optical axis, or may be a laser receiving optical axis, where light is directed to the measured object after passing through the laser 21, the focusing lens 22, the compensating prism 25, the half pentaprism 14, the reflecting mirror 12, and the objective lens 11.
As shown in fig. 3C, 3C is a projection optical axis of the self-luminous OLED display, and the light is imaged after passing through the self-luminous OLED display 31, the focusing lens group 33, the second reflecting mirror 32, the compensating prism 25, the half-pentaprism 14, and the roof half-pentaprism 13, and the image plane coincides with the LCD display 15 and the focal plane FS, and the display information of the self-luminous OLED display, the display information of the LCD display, and the image formed by the telescope aiming optical axis 1A are simultaneously observed by human eyes through an eyepiece.
The surface of the compensation prism connecting surface 253 or the outer reflecting surface 141 of the half pentaprism 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%；λ=620nm-720nm，R/T=4:6；λ=850nm-950nm，T>98%。
example 4:
in this embodiment, a fourth structure of an optical beam splitting system of a laser ranging telescope is provided, as shown in fig. 4, a half pentaprism 14, a roof half pentaprism 13 and a reflecting mirror 12 are sequentially arranged between an objective lens 11 and an eyepiece 16 along the incident light, a transceiver surface 142 of the half pentaprism faces the objective lens 11, the reflecting mirror 12 is located at the upper side of a transceiver surface 131 of the roof half pentaprism and is inclined at 45 degrees, and the incident light passing through the transceiver surface 131 of the roof half pentaprism vertically enters the eyepiece after being reflected by the reflecting mirror. The compensation prism 26 of this embodiment includes a laser incident surface 261 and a display incident surface 262, the laser incident surface 261 is parallel to the half pentaprism transceiver surface 142, the display incident surface 262 is parallel to the half pentaprism internal emission surface 143, and an included angle of 45 ° is formed between the laser incident surface and the display incident surface. The laser is opposite to the laser incidence surface through the focusing lens, the laser light enters the semi-pentaprism after being reflected by the display incidence surface, a second reflecting mirror 32 and a focusing lens group 33 are arranged between the self-luminous OLED display and the display incidence surface, and the display light vertically enters the display incidence surface after passing through the focusing lens group after being reflected by the second reflecting mirror. An LCD display 15 is disposed between the eyepiece 16 and the mirror 12, with the LCD display being disposed directly opposite the eyepiece.
As shown in fig. 4A, 4A is a telescope sighting optical axis, light is imaged to a focal plane FS through an objective lens 11, a half-pentaprism 14, a roof half-pentaprism 13 and a reflecting mirror 12, and a display surface of the LCD display coincides with the focal plane FS, and a human eye observes the LCD display 15 and an image of an object formed by the light path through an eyepiece 16.
As shown in fig. 4B, 4B is a laser emission optical axis, or may be a laser receiving optical axis, and the light beam is directed to the measured object after passing through the laser 21, the focusing lens 22, the compensating prism 26, the half pentaprism 14, and the objective lens 11.
As shown in fig. 4C, 4C is the projected optical axis of the self-luminous OLED display, and the light passes through the self-luminous OLED display 31, the second reflecting mirror 32, the focusing lens group 33, the compensating prism 26, the half-pentaprism 13, the reflecting mirror 12, and the back image, the image plane coincides with the LCD display and the focusing plane FS, and the information of the self-luminous OLED display, the display information of the LCD display, and the image formed by the aiming optical axis of the 4A telescope are simultaneously observed by the human eye through the eyepiece 16.
The surface of the compensation prism connection surface 263 or the outer reflection surface 141 of the half pentaprism 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%；λ=620nm-720nm，R/T=4:6；λ=850nm-950nm，T>98%。
in addition, as shown in fig. 4e, another structure of the supplementary prism is provided, the supplementary prism 27 includes a laser incident surface 271 and a laser reflecting surface 272, the laser incident surface 271 is parallel to the half-pentaprism transceiver surface 142, the laser reflecting surface 272 is parallel to the bottom surface 144, and an included angle of 45 degrees is formed between the laser incident surface and the laser reflecting surface. The laser is opposite to the laser incident surface through the focusing lens, and the laser light is reflected by the laser reflecting surface and then enters the half-pentaprism. The light rays pass through the focusing lens 22, the compensating prism 27, the half pentaprism 14 and the objective lens 11 and then are directed to the measured object.
As shown in fig. 4d, another structure of the projection optical axis of the self-luminous OLED display is shown, the self-luminous OLED display is located at the other side of the mirror 12 opposite to the eyepiece, and the self-luminous OLED display faces the eyepiece through the focusing lens group 33, and the display light vertically enters the eyepiece after passing through the mirror. In the projection optical axis of the self-luminous OLED display, the light is imaged after passing through the focusing lens group 33 and the reflecting mirror 12, the image plane of the light coincides with the LCD display 15 and the focal plane FS, and the display information of the self-luminous OLED display, the display linearity of the LCD display and the image formed by the 5A telescope aiming optical axis can be observed by human eyes through the eyepiece 16.
The surface of the connection surface 273 of the compensation prism or the outer reflecting surface 141 of the half pentaprism is coated with a light-splitting film layer, which is composed 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%；λ=620nm-720nm，R/T=4:6；λ=850nm-950nm，T>98%。
example 5:
in this embodiment, as shown in fig. 5, a roof half pentaprism 13, a half pentaprism 14 and a reflecting mirror 12 are sequentially arranged between an objective lens 11 and an eyepiece 16 along the incident light, a receiving and transmitting surface 131 of the roof half pentaprism faces the objective lens 11, the reflecting mirror 12 is positioned above the receiving and transmitting surface 131 of the roof half pentaprism and is inclined at 45 degrees, and the incident light passing through the receiving and transmitting surface 142 of the half pentaprism is reflected by the reflecting mirror 12 and vertically enters the eyepiece 16. The compensating prism 28 of the present embodiment includes a laser incident surface 282 and a display incident surface 281, the laser incident surface 282 is parallel to the inner reflection surface 143 of the half pentaprism, the display incident surface 281 is parallel to the transceiver surface 142 of the half pentaprism, and an included angle of 45 degrees is formed between the laser incident surface and the display incident surface. The laser is opposite to the laser incidence plane through the focusing lens group 33, the self-luminous OLED display is opposite to the display incidence plane, and display light vertically enters the display incidence plane after passing through the focusing lens group. An LCD display 15 is disposed between the eyepiece 16 and the mirror 12, with the LCD display being disposed directly opposite the eyepiece.
As shown in fig. 5A, where 5A is the telescope sighting optical axis, light is imaged to focal plane FS through objective lens 11, roof half pentaprism 13, half pentaprism 14 and reflecting mirror 12, and the display surface of the LCD display coincides with focal plane FS, and the human eye observes the LCD display 15 and the image of the object formed by the above-mentioned light path through eyepiece 16.
As shown in fig. 5B, 5B is a laser emission optical axis, or may be a laser receiving optical axis, where light is directed to the measured object after passing through the laser 21, the focusing lens 22, the compensating prism 28, the half pentaprism 14, the roof half pentaprism 13, and the objective lens 11.
As shown in fig. 5C, 5C is the projected optical axis of the self-luminous OLED display, and the light is imaged after passing through the self-luminous OLED display 31, the focusing lens group 33, the compensating prism 28, the half pentaprism 13, and the reflecting mirror 12, the image plane coincides with the LCD display and the focusing plane FS, and the information of the self-luminous OLED display, the display information of the LCD display, and the image formed by the 4A telescope aiming optical axis are simultaneously observed by human eyes through the eyepiece 16.
The surface of the connecting surface 283 of the compensating prism or the outer reflecting surface 141 of the half pentaprism is coated with a light-splitting film layer, which is composed 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%；λ=620nm-720nm，R/T=4:6；λ=850nm-950nm，T>98%。
the specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although terms of objective lens, mirror, roof half pentaprism, LCD display, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present invention.
Claims (9)
1. The utility model provides a laser rangefinder telescope optics beam splitting system, includes objective and eyepiece, its characterized in that: the device comprises an objective, an eyepiece, a roof half pentaprism, a half pentaprism and a compensating prism, wherein the roof half pentaprism, the half pentaprism and the compensating prism comprise a receiving and transmitting surface, an inner reflecting surface, an outer reflecting surface and a bottom surface, the receiving and transmitting surfaces of the half pentaprism/the roof half pentaprism are opposite to the eyepiece, incident light vertically enters the receiving and transmitting surfaces of the roof half pentaprism/the half pentaprism through reflection of a reflecting mirror through the objective, or the receiving and transmitting surfaces of the half pentaprism/the roof half pentaprism are opposite to the objective, the incident light vertically enters the eyepiece after being reflected by the reflecting mirror, the compensating prism is connected to the outer reflecting surface of the half pentaprism, a laser and a self-luminous OLED display are arranged outside the compensating prism, the inner reflecting surface of the roof half pentaprism and the inner reflecting surface of the half pentaprism are opposite to the eyepiece, one of the roof half pentaprism and the receiving and transmitting surfaces of the half pentaprism are opposite to the objective, the other of the roof half pentaprism/eyepiece is opposite to the objective, the other is opposite to the eyepiece, and the LCD display is arranged on the path of the incident light.
2. The optical beam splitting system of the laser ranging telescope according to claim 1, wherein the reflecting mirror, the roof half pentaprism and the half pentaprism are sequentially arranged between the objective lens and the ocular lens along the incident light, the receiving and transmitting surface of the half pentaprism is opposite to the ocular lens, the incident light passes through the objective lens, is reflected by the reflecting mirror and vertically enters the receiving and transmitting surface of the roof half pentaprism, the compensating prism comprises a laser incident surface and a display incident surface, the laser incident surface is parallel to the internal reflecting surface of the half pentaprism, the display incident surface is parallel to the receiving and transmitting surface of the half pentaprism, an included angle of 45 degrees is formed between the laser incident surface and the display incident surface, the laser is opposite to the laser incident surface through the focusing lens, a second reflecting mirror and a focusing lens group are arranged between the self-luminous OLED display and the display incident surface, and the display light vertically enters the display incident surface after passing through the focusing lens group.
3. The optical beam splitting system of the laser range finding telescope as claimed in claim 2, wherein a detector and a focusing objective lens are further arranged on the other side of the second reflecting mirror, and the light rays pass through the focusing objective lens and enter the detector after being reflected by the second reflecting mirror.
4. The optical beam splitting system of the laser ranging telescope as claimed in claim 1, wherein the reflecting mirror, the half pentaprism and the roof half pentaprism are sequentially arranged between the objective lens and the ocular lens along the incident light, the receiving and transmitting surface of the half pentaprism faces the ocular lens, the incident light passes through the objective lens and is reflected by the reflecting mirror to vertically enter the receiving and transmitting surface of the roof half pentaprism, the compensating prism comprises an incident surface and a reflecting surface, an included angle of 45 degrees is formed between the incident surface and the reflecting surface in the half pentaprism, an included angle of 112.5 degrees is formed between the reflecting surface and the receiving and transmitting surface of the half pentaprism, an included angle of 22.5 degrees is formed between the incident surface and the reflecting surface, the laser faces the incident surface through the focusing lens, and the self-luminous OLED display faces the incident surface.
5. The optical beam splitting system of the laser ranging telescope according to claim 1, wherein the reflecting mirror, the half pentaprism and the roof half pentaprism are sequentially arranged between the objective lens and the ocular lens along the incident light, the receiving and transmitting surface of the roof half pentaprism is opposite to the ocular lens, the incident light passes through the objective lens and vertically enters the receiving and transmitting surface of the half pentaprism after being reflected by the reflecting mirror, the compensating prism comprises a laser incident surface and a display incident surface, the laser incident surface is parallel to the receiving and transmitting surface of the half pentaprism, the display incident surface is parallel to the emitting surface in the half pentaprism, an included angle of 45 degrees is formed between the laser incident surface and the display incident surface, the laser is opposite to the laser incident surface through the focusing lens, the self-luminous OLED display and the display incident surface are provided with a focusing lens group and a second reflecting mirror, and the display light passes through the focusing lens group and then is reflected by the second reflecting mirror and vertically enters the display incident surface.
6. The optical beam splitting system of the laser ranging telescope according to claim 1, wherein the half pentaprism, the roof pentaprism and the reflecting mirror are sequentially arranged between the objective lens and the ocular lens along the incident light, the receiving and transmitting surface of the half pentaprism faces the objective lens, the incident light passing through the receiving and transmitting surface of the roof pentaprism vertically enters the ocular lens after being reflected by the reflecting mirror, the compensating prism comprises a laser incident surface and a display incident surface, the laser incident surface is parallel to the receiving and transmitting surface of the half pentaprism, the display incident surface is parallel to the emitting surface in the half pentaprism, an included angle of 45 degrees is formed between the laser incident surface and the display incident surface, the laser is opposite to the laser incident surface through the focusing lens, the laser light enters the half pentaprism after being reflected by the display incident surface, a second reflecting mirror and a focusing lens group are arranged between the self-luminous OLED display and the display incident surface, and the display light vertically enters the display incident surface after passing through the focusing lens group;
or the compensating prism comprises a laser incidence surface and a laser reflection surface, wherein the laser incidence surface is parallel to the half pentaprism receiving and transmitting surface, the laser reflection surface is parallel to the bottom surface, an included angle of 45 degrees is formed between the laser incidence surface and the laser reflection surface, the laser device faces the laser incidence surface through the focusing lens, laser light enters the half pentaprism after being reflected by the laser reflection surface, the self-luminous OLED display is positioned at the other side of the reflecting mirror opposite to the ocular, the self-luminous OLED display faces the ocular through the focusing lens group, and display light vertically enters the ocular after passing through the reflecting mirror.
7. The optical beam splitting system of the laser ranging telescope according to claim 1, wherein the roof half pentaprism, the half pentaprism and the reflecting mirror are sequentially arranged between the objective lens and the ocular lens along the incident light, the receiving and transmitting surface of the roof half pentaprism faces the objective lens, the incident light passing through the receiving and transmitting surface of the half pentaprism vertically enters the ocular lens after being reflected by the reflecting mirror, the compensating prism comprises a laser incident surface and a display incident surface, the laser incident surface is parallel to the internal reflecting surface of the half pentaprism, the display incident surface is parallel to the receiving and transmitting surface of the half pentaprism, an included angle of 45 degrees is formed between the laser incident surface and the display incident surface, the laser faces the laser incident surface through the focusing lens group, the self-luminous OLED display faces the display incident surface, and the display light vertically enters the display incident surface after passing through the focusing lens group.
8. The optical beam splitting system of the laser ranging telescope according to any one of claims 1-7, wherein the LCD display is arranged opposite to the eyepiece, and an imaging plane of the LCD display coincides with a focal plane; or the LCD display is positioned between the half pentaprism internal reflection surface and the roof half pentaprism internal reflection surface, and is respectively parallel to the half pentaprism internal reflection surface and the roof half pentaprism internal reflection surface, and the LCD display imaging surface is overlapped with the focal plane.
9. The optical beam splitting system of the laser ranging telescope according to any one of claims 1-7, wherein a beam splitting film layer is coated on a surface of the compensating prism, which is in contact with an outer reflecting surface of the half pentaprism, or on an outer reflecting surface of the half pentaprism, and the beam 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%；λ=620nm-720nm，R/T=4:6；λ=850nm-950nm，T>98%。
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| CN111190166A (en) * | 2020-01-09 | 2020-05-22 | 金华市蓝海光电技术有限公司 | Laser range finder with double-color switching display |
| CN111257899A (en) * | 2020-01-09 | 2020-06-09 | 广州博冠光电科技股份有限公司 | Optical system of laser ranging telescope |
| CN112099030A (en) * | 2020-10-10 | 2020-12-18 | 成都捷测科技有限公司 | Laser range finder of looking far away |
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