Sighting telescope capable of being used day and night
By integrating night vision components and display components in the scope, collecting and processing infrared band information, the problem of poor aiming effect of existing scopes in night and dark light environments is solved, and high-precision aiming effect available day and night is achieved.
Patent Information
- Application Number
- CN202420847672.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2023-10-17
- Filing Date
- 2024-04-22
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-04-22
AI Technical Summary
The existing point scope can only be used in bright environments during the day or at night, and the target cannot be seen clearly at night and in dark light environments, and the aiming effect is poor.
A scope including a light source component, a spectrometer, a night vision component and a display component is designed. The night vision component is used to collect infrared band information in night vision mode, and the display component converts infrared band information into infrared wave images. The second light beam is formed after the transmissive semi-reverse film processing. The light beam emitted by the light source component coincides with the infrared image beam and is jointly shot towards the user's human eye.
It achieves the aiming effect available day and night, and can clearly see the target at night and in dark light environments, improving the accuracy and effect of aiming.
Smart Images
Figure CN222460447U_ABST
Abstract
Description
[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on October 17, 2023, with application number 202311339836.X and application name “A red dot rifle scope with night vision function”, the entire contents of which are incorporated by reference in this application. Technical Field
[0002] The utility model belongs to the technical field of sights, and more specifically relates to a sight that can be used day and night. Background Art
[0003] The dot sight is also called a reflective sight. The principle of the dot sight is: the light source component located at the focus of the reflective lens emits light, and the light of the light source component is reflected into the human eye through the reflective lens, and an image is formed in the human eye. The image point coincides with the observed target, and the aiming is completed. The dot sight has a built-in light source for emitting light toward the eye. The light emitted by the light source will first be redirected to the collimating objective lens through the reflector, and then converted into parallel light through the collimating objective lens, and finally redirected by the beam splitter prism and emitted into the human eye.
[0004] Traditional dot sights can only be used in bright environments during the day or at night. The target cannot be seen clearly at night or in dim light, and the aiming effect is poor. Utility Model Content
[0005] The utility model aims to provide a sighting scope that can be used day and night, so as to solve the technical problem that the existing point-type sighting scope can only be used in bright environment during the day or at night, and the target cannot be seen clearly at night and in dark environment, and the aiming effect is poor.
[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a sighting scope that can be used day and night, including a light source component, a beam splitter prism, a night vision component and a display component;
[0007] The night vision component is used to collect infrared band information in the night vision mode, and the display component is electrically connected to the night vision component to convert the infrared band information of the night vision component into an infrared wave image;
[0008] The dichroic prism is provided with a semi-transparent and semi-reflective film; the light source component transmits a light source signal, and the light source signal is processed by the semi-transparent and semi-reflective film to form a first light beam; the display component transmits the infrared wave image, and the light source signal and the infrared wave image are incident from different incident surfaces of the dichroic prism, and the infrared wave image is processed by the semi-transparent and semi-reflective film to form a second light beam, and the first light beam overlaps with the second light beam.
[0009] In some embodiments, the light source assembly includes a light source component and a second lens, the second lens is located on the object side of the beam splitter prism and on the focal plane of the beam splitter prism, and the light source component is located on the focal plane of the second lens;
[0010] The light source component transmits the light source signal to the beam splitter prism, the light source signal is reflected or transmitted to the second lens through the semi-transparent and semi-reflective film, and is reflected back to the beam splitter prism after being collimated by the second lens, and then is transmitted through the semi-transparent and semi-reflective film to form the first light beam;
[0011] The display component transmits the infrared wave image to the beam splitter prism, and the infrared wave image is reflected by the semi-transparent and semi-reflective film to form the second light beam.
[0012] In some embodiments, the beam splitter prism has a first incident surface parallel to the main optical axis, and the light source is disposed on the first incident surface and located on the focal plane of the second lens.
[0013] In some embodiments, the display component includes a display screen, the beam splitter prism has a second incident surface parallel to the principal optical axis, the first incident surface is arranged opposite to the second incident surface, and the display screen is located on the second incident surface and on the focal plane of the second lens.
[0014] In some embodiments, the beam splitter prism has a third incident surface perpendicular to the main optical axis, and the light source is disposed on the third incident surface and located on the focal plane of the second lens.
[0015] In some embodiments, the display component includes a display screen, an eyepiece group and a reflector. The display screen is located on the light incident side of the eyepiece group. The eyepiece group includes a third lens, a fourth lens and a fifth lens which are arranged in sequence and all have refractive power. The fifth lens is arranged on the dichroic prism and located on the focal plane of the second lens. The reflector is arranged corresponding to the fifth lens, and the third lens and the fourth lens are arranged between the display screen and the reflector.
[0016] In some embodiments, the display assembly includes a display screen and a second lens, the second lens is located on the object side of the beam splitter prism, and the display screen is located on the focal plane of the second lens;
[0017] The display screen emits the infrared wave image to the beam splitter prism, the infrared wave image is reflected or transmitted to the second lens through the semi-transparent and semi-reflective film, and is reflected back to the beam splitter prism after being collimated by the second lens, and then is transmitted through the semi-transparent and semi-reflective film to form the second light beam;
[0018] The light source assembly transmits the light source signal to the beam splitter prism, and the light source signal is reflected by the semi-transparent and semi-reflective film to form the first light beam.
[0019] In some embodiments, the beam splitter prism has a first incident surface parallel to the main optical axis, and the display screen is disposed on the first incident surface and located on the focal plane of the second lens.
[0020] In some embodiments, the light source assembly includes a light source component, the beam splitter prism has a second incident surface parallel to the main optical axis, the first incident surface is arranged opposite to the second incident surface, and the light source component is located on the second incident surface and on the focal plane of the second lens.
[0021] In some embodiments, the light source assembly includes a light source component, the beam splitter prism has a third incident surface perpendicular to the main optical axis, and the light source component is disposed on the third incident surface and located on the focal plane of the second lens.
[0022] In some embodiments, the light source assembly includes a light source component, an eyepiece group and a reflector. The light source component is located on the light incident side of the eyepiece group. The eyepiece group includes a third lens, a fourth lens and a fifth lens which are arranged in sequence and all have refractive power. The fifth lens is arranged on the dichroic prism and located on the focal plane of the second lens. The reflector is arranged corresponding to the fifth lens. The third lens and the fourth lens are arranged between the light source component and the reflector.
[0023] In some embodiments, the display assembly includes a display screen and a second lens, the second lens is located on the object side of the beam splitter prism, and the display screen is located on the focal plane of the second lens;
[0024] The display screen emits the infrared wave image to the beam splitter prism, the infrared wave image is reflected to the second lens through the semi-transparent and semi-reflective film, and is reflected back to the beam splitter prism after being collimated by the second lens, and then is transmitted through the semi-transparent and semi-reflective film to form the second light beam;
[0025] The light source assembly is located at the objective side of the dichroic prism and transmits the light source signal to the dichroic prism. The light source signal is transmitted to the second lens through the semi-transparent and semi-reflective film, and is reflected back to the dichroic prism after being collimated by the second lens, and then transmitted through the semi-transparent and semi-reflective film to form the first light beam.
[0026] In some embodiments, the night vision assembly includes an objective lens group and a night vision device, the objective lens group is located on the object side of the night vision device, and the night vision device is electrically connected to the display screen.
[0027] In some embodiments, the night vision component includes a thermal imaging detector and / or a CMOS detector.
[0028] Compared with the prior art, the sight that can be used during the day and night provided by the utility model comprises a night vision component for collecting infrared band information in a night vision mode, the display component is electrically connected to the night vision component, the infrared band information of the night vision component is converted into an infrared wave image, which is formed into a second light beam after being processed by a semi-transparent and semi-reflective film, the first light beam emitted by the light source component and processed by the semi-transparent and semi-reflective film overlaps with the second light beam and is emitted to the user's eyes, the first light beam and the second light beam form an image in the human eye, and the image overlaps with the observed target, thereby being able to complete aiming in the night vision mode with a good aiming effect, and being usable during the day and night. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0030] Figure 1 Schematic diagram of the optical structure of the sighting scope provided in the first embodiment of the utility model, which can be used during the day and at night Figure 1 ;
[0031] Figure 2 Schematic diagram of the optical structure of the sighting scope provided in the first embodiment of the utility model, which can be used during the day and at night Figure 2 ;
[0032] Figure 3 Schematic diagram of the optical structure of the sighting scope provided in the first embodiment of the utility model, which can be used during the day and at night Figure 3 ;
[0033] Figure 4 A schematic diagram of the optical structure of a sighting scope usable during the day and at night provided in the second embodiment of the utility model;
[0034] Figure 5 This is a schematic diagram of the optical structure of a sight that can be used during the day and at night, provided in Embodiment 3 of the utility model.
[0035] Among them, the reference numerals in the figure are:
[0036] 1-light source assembly; 11-light source component; 12-second lens; 2-beam splitter prism; 21-semi-transparent and semi-reflective film; 22-first incident surface; 23-second incident surface; 24-third incident surface; 3-night vision assembly; 31-objective lens group; 32-night vision component; 321-thermal imaging detector; 322-CMOS detector; 4-display assembly; 41-display screen; 42-eyepiece group; 421-third lens; 422-fourth lens; 423-fifth lens; 43-reflector. DETAILED DESCRIPTION
[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0038] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0039] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0041] Sights are often installed on firearms to improve aiming accuracy and reduce shooting difficulty. In this application, "target side" means the end of the sight that is close to the shooter during actual operation, and "object side" means the end of the sight that is close to the target during actual operation, that is, the end away from the shooter.
[0042] See also Figures 1 to 5Now, the sighting scope provided by the utility model and usable during the day and night is described. The sighting scope that can be used during the day and night includes a light source component 1, a dichroic prism 2, a night vision component 3 and a display component 4. The night vision component 3 is used to collect infrared band information in the night vision mode, and the display component 4 is electrically connected to the night vision component 3 to convert the infrared band information of the night vision component 3 into an infrared wave image. The dichroic prism 2 does not have a refractive ability, and a semi-transparent and semi-reflective film 21 is provided on the dichroic prism 2; the light source component 1 emits a light source signal, and the light source signal is processed by the semi-transparent and semi-reflective film 21 to form a first light beam; the display component 4 emits an infrared wave image, and the light source signal and the infrared wave image are incident from different incident surfaces of the dichroic prism 2 to avoid mutual interference between the light source signal and the infrared wave image, and the infrared wave image is processed by the semi-transparent and semi-reflective film 21 to form a second light beam, and the first light beam overlaps with the second light beam and is emitted to the user. Among them, the first light beam and the second light beam are both parallel light beams.
[0043] In daytime or white light mode where the target is visible to the naked eye, the light source assembly 1 emits a light source signal, which is processed by the semi-transparent and semi-reflective film 21 to form a first light beam. The first light beam enters the human eye and forms an image in the human eye. The image formed by the first light beam in the human eye coincides with the observed target, thus completing the aiming in the white light mode.
[0044] In the night vision mode in darkness or without visible light, the light source component 1 emits a light source signal, which is processed by the semi-transparent and semi-reflective film 21 to form a first light beam; the night vision component 3 collects the infrared band signal in the night vision mode and transmits the infrared band signal to the display component 4, which converts the infrared band signal into an infrared wave image, which is processed by the semi-transparent and semi-reflective film 21 to form a second light beam, the first light beam overlaps with the second light beam and is emitted to the user's eyes, the first light beam and the second light beam form an image in the human eye, and the image overlaps with the observed target, completing the aiming in the night vision mode.
[0045] Compared with the prior art, the sighting scope that can be used day and night provided by the utility model comprises a night vision component 3 for collecting infrared band information in a night vision mode, a display component 4 is electrically connected to the night vision component 3, the infrared band information of the night vision component 3 is converted into an infrared wave image, which is formed into a second light beam after being processed by a semi-transparent and semi-reflective film 21, a first light beam emitted by the light source component 1 and processed by the semi-transparent and semi-reflective film 21 overlaps with the second light beam and is emitted to the user's eyes, the first light beam and the second light beam form an image in the human eye, and the image overlaps with the observed target, so that aiming in the night vision mode can be completed, and the aiming effect is good, and it can be used day and night.
[0046] In actual applications, the sight that can be used day and night also includes a power supply and a control circuit. The control circuit, night vision component 3, display component 4 and light source component 1 are all electrically connected to the power supply, and the power supply supplies power to the control circuit, night vision component 3, display component 4 and light source component 1; the control circuit is connected to the night vision component 3, display component 4 and light source component 1 to control the operation of the night vision component 3, display component 4 and light source component 1.
[0047] In one embodiment, the night vision assembly 3 includes an objective lens group 31 and a night vision component 32 . The objective lens group 31 is located on the object side of the night vision component 32 , and the night vision component 32 is electrically connected to the display screen 41 .
[0048] Specifically, the objective lens group 31 and the night vision component 32 are arranged along a straight line parallel to the main optical axis, which can ensure that the target image information obtained by the user when aiming in the white light mode and the thermal imaging night vision mode is consistent.
[0049] In one embodiment, the night vision component 32 includes a thermal imaging detector 321. Thus, the thermal imaging detector 321 can collect far infrared band information in the night vision mode, and detects the thermal radiation of the target.
[0050] In one embodiment, the night vision device 32 includes a CMOS detector 322. Thus, the near-infrared band information in the night vision mode can be collected by the CMOS detector 322, and what is detected is the near-infrared rays reflected by the target.
[0051] In one embodiment, the night vision component 32 includes a thermal imaging detector 321 and a CMOS detector 322. In this way, the night vision component 32 can simultaneously collect far infrared band information and near infrared band information in the night vision mode, which can increase the applicable range of the sight.
[0052] The specific implementation of the present application is described in more detail below in conjunction with specific embodiments.
[0053] Embodiment 1
[0054] like Figures 1 to 3 As shown, in this embodiment, the light source assembly 1 includes a light source component 11 and a second lens 12. Specifically, the light source component 11 is a point light source that emits divergent light. The second lens 12 is located on the object side of the dichroic prism 2 and on the focal plane of the dichroic prism 2. The light source component 11 is located on the focal plane of the second lens 12. The light source component 11 transmits a light source signal to the dichroic prism 2. The light source signal is reflected or transmitted to the second lens 12 through the semi-transparent and semi-reflective film 21, and is reflected back to the dichroic prism 2 after being collimated by the second lens 12, and is then transmitted through the semi-transparent and semi-reflective film 21 to form a first light beam. The display component 4 transmits an infrared wave image to the dichroic prism 2, and the infrared wave image is reflected by the semi-transparent and semi-reflective film 21 to form a second light beam.
[0055] Specifically, the beam splitter prism 2 includes a first prism and a second prism glued to each other, and a semi-transparent and semi-reflective film 21 is provided on the glued surface of the first prism and the second prism.
[0056] Since the dichroic prism 2 is provided with a semi-transparent and semi-reflective film 21 which can reflect or transmit the light beam, the second lens 12 has two focal planes, one being a first focal plane perpendicular to the principal optical axis and the other being a second focal plane parallel to the principal optical axis.
[0057] The light source 11 is located on the focal plane of the second lens 12. The light source 11 may be located on the first focal plane or on the second focal plane. The specific setting may be selected according to the actual transmission path of the first light beam. The light source 11 is located on the focal plane of the second lens 12. After receiving the first light beam emitted by the light source 11 located on the focal plane, the second lens 12 can collimate the light source signal.
[0058] like Figure 2 As shown, when the light source 11 is located on the first focal plane, that is, the dichroic prism 2 has a third incident surface 24 perpendicular to the main optical axis, the light source 11 is arranged on the third incident surface 24, and is located on the focal plane of the second lens 12. At this time, the light source 11 emits a light source signal to the dichroic prism 2, and the light source signal is transmitted to the second lens 12 through the semi-transparent and semi-reflective film 21, and is reflected back to the dichroic prism 2 after being collimated by the second lens 12, and is then transmitted through the semi-transparent and semi-reflective film 21 to form a first light beam. At this time, although the second lens 12 can collimate the light source signal, the light source 11 is located on the transmission path of the first light beam and the second light beam, which will block the observation route of the human eye.
[0059] like Figure 1 and Figure 3 As shown, when the light source 11 is located on the second focal plane, that is, the dichroic prism 2 has a first incident surface 22 parallel to the main optical axis, the light source 11 is arranged on the first incident surface 22, and is located on the focal plane of the second lens 12. At this time, the light source 11 transmits a light source signal to the dichroic prism 2, and the light source signal is reflected to the second lens 12 through the semi-transparent and semi-reflective film 21, and is reflected back to the dichroic prism 2 after being collimated by the second lens 12, and is then transmitted through the semi-transparent and semi-reflective film 21 to form a first light beam. At this time, not only can the second lens 12 collimate the light source signal, but also the light source 11 can be prevented from being located on the transmission path of the first light beam and the second light beam, thereby preventing the light source 11 from blocking the observation route of the human eye.
[0060] For example, Figure 1 and Figure 3As shown, the beam splitter prism 2 has a first incident surface 22 parallel to the main optical axis, and the light source 11 is disposed on the first incident surface 22 and is located on the focal plane of the second lens 12. At this time, the light source 11 is located on the second focal plane, which not only allows the second lens 12 to collimate the first light beam, but also prevents the light source 11 from blocking the observation route of the human eye.
[0061] In practical applications, the red light transmittance of the semi-transparent and semi-reflective film 21 can be selected according to actual needs. For example, when the light source 11 adopts red light with a central wavelength of 650±10nm, the red light transmittance of the semi-transparent and semi-reflective film 21 can be set to 20% to 90%, and the transmittance of light in other bands can be set to above 99%. In this way, the semi-transparent and semi-reflective film 21 can reflect the light (red light) emitted by the light source 11 to the human eye, and ensure that the light in other bands has a higher transmittance. In this way, the sight that can be used day and night can not only obtain an overall higher transmittance effect, but also have a relatively bright aiming point.
[0062] The following is only Figure 1 When the light source 11 uses red light with a central wavelength of 650±10nm, the red light transmittance of the semi-transparent and semi-reflective film 21 can be set to 60% for illustration. At this time, the red light reflectance of the semi-transparent and semi-reflective film 21 is 40%. The light source 11 emits a light source signal, which enters the dichroic prism 2 from the first incident surface 22. After being reflected by the semi-transparent and semi-reflective film 21, only 40% of the light source signal enters the second lens 12, and is collimated by the second lens 12 and reflected back to the dichroic prism 2. After being transmitted through the semi-transparent and semi-reflective film 21, only 60% of the 40% of the light source signal that enters the second lens 12 forms the first light beam, that is, after being transmitted through the semi-transparent and semi-reflective film 21, 24% of the light of the light source signal emitted by the light source 11 forms the first light beam.
[0063] In one embodiment, the display assembly 4 includes a display screen 41. In practical applications, the display screen 41 can be arranged perpendicular to the main optical axis or parallel to the main optical axis. When the display screen 41 is arranged perpendicular to the main optical axis, the display screen 41 is located on the transmission path of the first light beam and the second light beam, which will block the observation path of the human eye; when the display screen 41 is arranged parallel to the main optical axis, such as Figure 1 and Figure 2 As shown, the display assembly 4 includes a display screen 41, the dichroic prism 2 has a second incident surface 23 parallel to the main optical axis, the first incident surface 22 and the second incident surface 23 are arranged opposite to each other, and the display screen 41 is located on the second incident surface 23 and on the focal plane of the second lens 12, so as to avoid the display screen 41 blocking the observation route of the human eye.
[0064] For example, Figure 1 and Figure 2As shown, the display assembly 4 includes a display screen 41, the beam splitter prism 2 has a first incident surface 22 and a second incident surface 23 parallel to the main optical axis, the first incident surface 22 and the second incident surface 23 are arranged opposite to each other, the display screen 41 is located on the second incident surface 23, the light source 11 is located on the first incident surface 22, and the light source 11 and the display screen 41 are both located on the focal plane of the second lens 12. In this way, the infrared wave image emitted by the display screen 41 is processed by the semi-transparent and semi-reflective film 21 to form a second light beam that can overlap with the first light beam, and at the same time, it can also prevent the light source 11 and the display screen 41 from blocking the observation route of the human eye.
[0065] In one embodiment, if Figure 3 As shown, the display assembly 4 includes a display screen 41, an eyepiece group 42 and a reflector 43. The display screen 41 is located on the light incident side of the eyepiece group 42. The eyepiece group 42 includes a third lens 421, a fourth lens 422 and a fifth lens 423 which are arranged in sequence and all have refractive power. The fifth lens 423 is arranged on the dichroic prism 2 and is located on the focal plane of the second lens 12. The reflector 43 is arranged corresponding to the fifth lens 423. The third lens 421 and the fourth lens 422 are arranged between the display screen 41 and the reflector 43.
[0066] Specifically, the reflector 43 is a total reflection lens. When the display screen 41 emits an infrared wave image toward the eyepiece group 42, the infrared wave image will first pass through the third lens 421, so that the third lens 421 will perform a first refraction on the infrared wave image. Then, the infrared wave image will pass through the fourth lens 422, so that the fourth lens 422 will perform a second refraction on the infrared wave image. Then, the infrared wave image will reach the reflector 43 and be reflected by the reflector 43 to the fifth lens 423, so that the fifth lens 423 will perform a third refraction on the light. At this point, the eyepiece group 42 can complete the refraction of the infrared wave image emitted by the display screen 41.
[0067] The display component 4 includes a reflector 43, and the eyepiece group 42 includes a third lens 421, a fourth lens 422 and a fifth lens 423 which are arranged in sequence and have refractive power. This can magnify the infrared wave image on the display screen 41. Compared with directly setting the display screen 41 on the dichroic prism 2, the infrared wave image can be clearer; at the same time, the eyepiece group 42 includes a third lens 421, a fourth lens 422 and a fifth lens 423 which are arranged in sequence and have refractive power. The size of the display screen 41 can be reduced accordingly according to the magnification of the eyepiece group 42 composed of the third lens 421, the fourth lens 422 and the fifth lens 423, thereby reducing the volume of the sight.
[0068] Embodiment 2
[0069] The only difference between this embodiment and the first embodiment is that the positions of the display screen 41 and the light source 11 are interchanged.
[0070] Specifically, Figure 4 As shown, the display component 4 includes a display screen 41 and a second lens 12, the second lens 12 is located on the object side of the dichroic prism 2, and the display screen 41 is located on the focal plane of the second lens 12; the display screen 41 transmits an infrared wave image to the dichroic prism 2, the infrared wave image is reflected or transmitted to the second lens 12 through the semi-transparent and semi-reflective film 21, and is reflected back to the dichroic prism 2 after being collimated by the second lens 12, and is then transmitted through the semi-transparent and semi-reflective film 21 to form a second light beam; the light source component 1 transmits a light source signal to the dichroic prism 2, and the light source signal is reflected by the semi-transparent and semi-reflective film 21 to form a first light beam.
[0071] Specifically, the beam splitter prism 2 includes a first prism and a second prism glued to each other, and a semi-transparent and semi-reflective film 21 is provided on the glued surface of the first prism and the second prism.
[0072] Since the dichroic prism 2 is provided with a semi-transparent and semi-reflective film 21 which can reflect or transmit the light beam, the second lens 12 has two focal planes, one being a first focal plane perpendicular to the principal optical axis and the other being a second focal plane parallel to the principal optical axis.
[0073] The display screen 41 is located on the focal plane of the second lens 12. The display screen 41 may be located on the first focal plane or on the second focal plane. The specific setting may be selected according to the actual transmission path of the second light beam. When the display screen 41 is located on the focal plane of the second lens 12, the second lens 12 can collimate the infrared wave image after receiving the second light beam emitted by the display screen 41 located on the focal plane.
[0074] When the display screen 41 is located on the first focal plane, the display screen 41 emits an infrared wave image to the dichroic prism 2. The infrared wave image is transmitted to the second lens 12 through the semi-transparent and semi-reflective film 21, and is reflected back to the dichroic prism 2 after being collimated by the second lens 12. It is then transmitted through the semi-transparent and semi-reflective film 21 to form a second light beam. At this time, although the second lens 12 can collimate the infrared wave image, the display screen 41 is located on the transmission path of the first light beam and the second light beam, which will block the observation route of the human eye.
[0075] like Figure 4 As shown, when the display screen 41 is located on the second focal plane, the display screen 41 emits an infrared wave image to the dichroic prism 2, and the infrared wave image is reflected to the second lens 12 through the semi-transparent and semi-reflective film 21, and is reflected back to the dichroic prism 2 after being collimated by the second lens 12, and then transmitted through the semi-transparent and semi-reflective film 21 to form a second light beam. At this time, not only can the second lens 12 collimate the infrared wave image, but also the display screen 41 can be prevented from being located on the transmission path of the first light beam and the second light beam, thereby preventing the optical display screen 41 from blocking the observation route of the human eye. Therefore, preferably, as Figure 4As shown, the display screen 41 is located on the second focal plane, that is, the dichroic prism 2 has a first incident surface 22 parallel to the main optical axis, and the display screen 41 is arranged on the first incident surface 22 and is located on the focal plane of the second lens 12, which not only allows the second lens 12 to collimate the infrared wave image, but also prevents the display screen 41 from blocking the observation route of the human eye.
[0076] In one embodiment, if Figure 4 As shown, the light source assembly 1 includes a light source 11, which can be arranged perpendicular to the main optical axis or parallel to the main optical axis. When the light source 11 is arranged perpendicular to the main optical axis, that is, the beam splitter 2 has a third incident surface 24 perpendicular to the main optical axis, the light source 11 is arranged on the third incident surface 24 and is located on the focal plane of the second lens 12. The light source 11 is located on the transmission path of the first light beam and the second light beam, which will block the observation route of the human eye. Figure 4 As shown, when the light source 11 is arranged parallel to the main optical axis, that is, the beam splitter prism 2 has a second incident surface 23 parallel to the main optical axis, the first incident surface 22 and the second incident surface 23 are arranged opposite to each other, the light source 11 is located on the second incident surface 23 and on the focal plane of the second lens 12, which can prevent the light source 11 from blocking the observation route of the human eye.
[0077] In one embodiment, the light source assembly 1 includes a light source component 11, an eyepiece group 42 and a reflector 43. The light source component 11 is located on the light incident side of the eyepiece group 42. The eyepiece group 42 includes a third lens 421, a fourth lens 422 and a fifth lens 423 which are arranged in sequence and all have refractive power. The fifth lens 423 is arranged on the beam splitter prism 2 and is located on the focal plane of the second lens 12. The reflector 43 is arranged corresponding to the fifth lens 423. The third lens 421 and the fourth lens 422 are arranged between the light source component 11 and the reflector 43.
[0078] Specifically, the reflector 43 is a total reflection lens. When the light source component 11 transmits a light source signal toward the eyepiece group 42, the light source signal will first pass through the third lens 421, so that the third lens 421 will perform a first refraction on the light source signal. Then, the light source signal will pass through the fourth lens 422, so that the fourth lens 422 will perform a second refraction on the light source signal. Then, the light source signal will reach the reflector 43 and be reflected by the reflector 43 to the fifth lens 423, so that the fifth lens 423 will perform a third refraction on the light. At this point, the eyepiece group 42 can complete the refraction of the light source signal emitted by the light source component 11.
[0079] The display component 4 includes a reflector 43, and the eyepiece group 42 includes a third lens 421, a fourth lens 422 and a fifth lens 423 which are arranged in sequence and have refractive power. The light source signal of the light source 11 can be amplified. Compared with directly setting the light source 11 on the dichroic prism 2, the light source signal can be clearer; at the same time, the eyepiece group 42 includes a third lens 421, a fourth lens 422 and a fifth lens 423 which are arranged in sequence and have refractive power. The size of the light source 11 can be reduced accordingly according to the magnification of the eyepiece group 42 composed of the third lens 421, the fourth lens 422 and the fifth lens 423, thereby reducing the volume of the sight.
[0080] Embodiment 3
[0081] like Figure 5 As shown, this embodiment is different from the embodiment 1 Figure 2 The only difference is that the beam splitter prism 2 is rotated 90° clockwise.
[0082] In one embodiment, the display component 4 includes a display screen 41 and a second lens 12, the second lens 12 is located on the object side of the dichroic prism 2, and the display screen 41 is located on the focal plane of the second lens 12; the display screen 41 transmits an infrared wave image to the dichroic prism 2, the infrared wave image is reflected to the second lens 12 through the semi-transparent and semi-reflective film 21, and is reflected back to the dichroic prism 2 after being collimated by the second lens 12, and is then transmitted through the semi-transparent and semi-reflective film 21 to form a second light beam; the light source component 1 is located on the object side of the dichroic prism 2, the light source component 1 transmits a light source signal to the dichroic prism 2, the light source signal is transmitted to the second lens 12 through the semi-transparent and semi-reflective film 21, and is reflected back to the dichroic prism 2 after being collimated by the second lens 12, and is then transmitted through the semi-transparent and semi-reflective film 21 to form a first light beam.
[0083] For example, Figure 5 As shown, the dichroic prism 2 includes a first prism and a second prism which are arranged in sequence from the object side to the eye side and glued to each other, the semi-transparent and semi-reflective film 21 is arranged on the glued surface of the first prism and the second prism, the first prism has a second incident surface 23 parallel to the main optical axis, the second prism has a third incident surface 24 perpendicular to the main optical axis, the display screen 41 is arranged on the second incident surface 23, and the light source 11 is arranged on the third incident surface 24.
[0084] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A sight that can be used day and night, characterized in that: Including light source assembly, dichroic prism, night vision assembly and display assembly; The night vision component is used to collect infrared band information in the night vision mode, and the display component is electrically connected to the night vision component to convert the infrared band information of the night vision component into an infrared wave image; The dichroic prism is provided with a semi-transparent and semi-reflective film; the light source assembly emits a light source signal, and the light source signal is processed by the semi-transparent and semi-reflective film to form a first light beam; the display assembly emits the infrared wave image, and the light source signal and the infrared wave image are incident from different incident surfaces of the dichroic prism, and the infrared wave image is processed by the semi-transparent and semi-reflective film to form a second light beam, and the first light beam overlaps with the second light beam; The light source assembly comprises a light source component and a second lens, wherein the second lens is located on the object side of the beam splitter prism and on the focal plane of the beam splitter prism, and the light source component is located on the focal plane of the second lens; The light source component transmits the light source signal to the beam splitter prism, the light source signal is reflected or transmitted to the second lens through the semi-transparent and semi-reflective film, and is reflected back to the beam splitter prism after being collimated by the second lens, and then is transmitted through the semi-transparent and semi-reflective film to form the first light beam; The display component transmits the infrared wave image to the beam splitter prism, and the infrared wave image is reflected by the semi-transparent and semi-reflective film to form the second light beam; The first light beam emitted by the light source assembly and processed by the semi-transmissive and semi-reflective film overlaps with the second light beam and is emitted toward the user's eyes; In the daytime or in a white light mode where the target is visible to the naked eye, the light source assembly emits a light source signal, which is processed by the semi-transparent and semi-reflective film to form a first light beam, which enters the human eye and forms an image in the human eye, and the image formed by the first light beam in the human eye coincides with the observed target, thereby completing the aiming in the white light mode; in the night vision mode where there is no visible light, the light source assembly emits a light source signal, which is processed by the semi-transparent and semi-reflective film to form a first light beam; the night vision assembly collects infrared band signals in the night vision mode, and transmits the infrared band signals to the display assembly, and the display assembly converts the infrared band signals into infrared wave images, which are processed by the semi-transparent and semi-reflective film to form a second light beam, and the first light beam coincides with the second light beam and is emitted to the user's eye, and the first light beam and the second light beam form an image in the human eye, and the image coincides with the observed target, thereby completing the aiming in the night vision mode; The night vision assembly comprises an objective lens group and a night vision component, wherein the objective lens group is located on the object side of the night vision component, and the night vision component is electrically connected to the display screen; wherein the objective lens group and the night vision component are arranged along a straight line parallel to the main optical axis; The night vision device includes a thermal imaging detector and a CMOS detector.
2. The sight that can be used day and night as claimed in claim 1, characterized in that: The beam splitter prism has a first incident surface parallel to the main optical axis. The light source is arranged on the first incident surface and is located on the focal plane of the second lens.
3. The sight that can be used day and night as claimed in claim 2, characterized in that: The display assembly includes a display screen, the beam splitter prism has a second incident surface parallel to the main optical axis, the first incident surface is arranged opposite to the second incident surface, and the display screen is located on the second incident surface and on the focal plane of the second lens.
4. The sight usable day and night as claimed in claim 2, characterized in that: The beam splitter prism has a third incident surface perpendicular to the main optical axis. The light source is arranged on the third incident surface and is located on the focal plane of the second lens.
5. The sight usable day and night as claimed in claim 2, characterized in that: The display assembly includes a display screen, an eyepiece group and a reflector. The display screen is located on the light incident side of the eyepiece group. The eyepiece group includes a third lens, a fourth lens and a fifth lens which are arranged in sequence and all have refractive power. The fifth lens is arranged on the dichroic prism and located on the focal plane of the second lens. The reflector is arranged corresponding to the fifth lens. The third lens and the fourth lens are arranged between the display screen and the reflector.
6. The sight usable day and night as claimed in claim 1, characterized in that: The display assembly comprises a display screen and a second lens, wherein the second lens is located on the object side of the beam splitter prism, and the display screen is located on the focal plane of the second lens; The display screen emits the infrared wave image to the beam splitter prism, the infrared wave image is reflected or transmitted to the second lens through the semi-transparent and semi-reflective film, and is reflected back to the beam splitter prism after being collimated by the second lens, and then is transmitted through the semi-transparent and semi-reflective film to form the second light beam; The light source assembly transmits the light source signal to the beam splitter prism, and the light source signal is reflected by the semi-transparent and semi-reflective film to form the first light beam.
7. The sight usable day and night as claimed in claim 6, characterized in that: The beam splitter prism has a first incident surface parallel to the main optical axis. The display screen is arranged on the first incident surface and is located on the focal plane of the second lens.
8. The sight usable day and night as claimed in claim 7, characterized in that: The light source assembly includes a light source component. The beam splitter prism has a second incident surface parallel to the main optical axis. The first incident surface is arranged opposite to the second incident surface. The light source component is located on the second incident surface and on the focal plane of the second lens.
9. The sight usable day and night as claimed in claim 7, characterized in that: The light source assembly comprises a light source component. The beam splitter prism has a third incident surface perpendicular to the main optical axis. The light source component is arranged on the third incident surface and is located on the focal plane of the second lens.
10. The sight usable day and night as claimed in claim 7, characterized in that: The light source assembly includes a light source component, an eyepiece group and a reflector. The light source component is located on the light incident side of the eyepiece group. The eyepiece group includes a third lens, a fourth lens and a fifth lens which are arranged in sequence and all have refractive power. The fifth lens is arranged on the dichroic prism and located on the focal plane of the second lens. The reflector is arranged corresponding to the fifth lens. The third lens and the fourth lens are arranged between the light source component and the reflector.
11. The sight usable day and night as claimed in claim 1, characterized in that: The display assembly comprises a display screen and a second lens, wherein the second lens is located on the object side of the beam splitter prism, and the display screen is located on the focal plane of the second lens; The display screen emits the infrared wave image to the beam splitter prism, the infrared wave image is reflected to the second lens through the semi-transparent and semi-reflective film, and is reflected back to the beam splitter prism after being collimated by the second lens, and then is transmitted through the semi-transparent and semi-reflective film to form the second light beam; The light source assembly is located at the objective side of the dichroic prism and transmits the light source signal to the dichroic prism. The light source signal is transmitted to the second lens through the semi-transparent and semi-reflective film, and is reflected back to the dichroic prism after being collimated by the second lens, and then transmitted through the semi-transparent and semi-reflective film to form the first light beam.