TWI630433B - Intellectual telescope and auto adjusting magnification method thereof - Google Patents

Abstract

An intelligent telescope includes a lens body, a motor, a light sensor, a visual recognition camera, and a processor. Light sensor to detect the brightness of the external environment; visual recognition camera to detect the pupil size corresponding to the brightness of the user; the processor to determine whether the brightness is greater than the light reference value; if it is, it will correspond to the outside world The current pupil size of the ambient brightness is multiplied by the base of the light to calculate the pupil size at the brightness reference, and the focal distance between the objective lens and the object is obtained based on the pupil size at the brightness reference; and the motor is adjusted according to the focus The distance between the objective lens and the object, in order to obtain the user's desired increase or decrease of magnification when observing the object through the eyepiece.

Description

Intelligent telescope and method for automatically adjusting magnification

The invention is a telescope, especially an intelligent telescope with automatic focusing and automatic magnification adjustment.

A telescope is a tool that assists in observing distant objects by collecting electromagnetic waves (such as visible light), and generally collects light, such as visible light, ultraviolet light (UV), or infrared light (IR), etc., so it is commonly called an optical telescope. After the optical telescope focuses the light, it can directly enlarge the image and directly perform visual inspection or photography. If it is divided into solid structures, the types of telescopes include monocular optical telescopes that observe the night sky, distant animals, and are fixed on a bracket, and also include hand-held binoculars. According to the optical path, it can be divided into reflective telescope and refracting telescope.

Generally speaking, the architecture of a telescope includes an eyepiece, an objective lens (lens), and a chirp that collect light. According to the optical principle, an image is formed on the focal plane where the objects gathered at a certain distance are focused. This image can be recorded by a recording device, or through an eyepiece with a magnifying function like a magnifying glass, plus an image attached to the eyepiece The adjustment of the adjustment device allows the eyes to see the enlarged virtual image in the distance. Because the image obtained by the objective lens is upside down from the original object, in order to facilitate observation, 稜鏡 is used in the telescope or one or more lens groups (稜鏡) are installed between the objective lens and the eyepiece to turn the image straight or After processing, this is the principle of general refracting telescope. In order to reduce the size of the body, The eyepiece arrangement of the radio telescope is changed to be perpendicular to the objective lens to reduce the light path; there are also hybrid telescopes.

However, when using commercially available telescopes, whether it is reflective, refractive or hybrid, the telescope's magnification adjustment is often inaccurate, which causes the image to be blurred at high magnifications and invisible when the magnification is low. The problem. This not only affects the user's willingness to use, but also wastes a lot of time on adjusting the focal length. Moreover, when the user adjusts the desired image, the general telescope only knows the required image after adjusting the optical parameters such as the focal length and light intensity, and cannot clearly know the magnification. It is necessary for subsequent recording and subsequent adjustment. Repeatedly manual, very inconvenient.

In view of the lack of the above-mentioned conventional technologies, the main object of the present invention is to provide a smart telescope and an automatic adjusting magnification method thereof, which can more accurately and quickly obtain a required image without manual adjustment by a user.

Another object of the present invention is to provide a smart telescope that can detect the current pupil size of a user based on a visual recognition camera, and multiply it with the base of the light to calculate the size of the current pupil at this brightness reference value. The size of the reference value is used to estimate the focal distance that the user wants, and the focal length is automatically adjusted and the magnification is converted, so that the user can find the desired image more quickly.

Yet another object of the present invention is to provide a method for automatically adjusting the magnification, which can automatically adjust the magnification of the telescope according to the pupil size of the user, and determine the focal distance and magnification using the light reference value, the preset object distance, and the pupil size. The three can increase the accuracy of judgment.

Therefore, according to the above object, the present invention provides a smart telescope, which includes a lens body, a motor, and a visual recognition device, wherein the lens body includes an eyepiece, an objective lens, and a chirp. The visual recognition device further includes a visual recognition camera, a processor, and a light sensor. The vision recognition camera is used to detect the pupil size corresponding to the brightness of the user. Light sensor for detecting the brightness of the light in the external environment. Place A processor is used to determine whether the brightness is greater than the light reference value. If so, the light brightness corresponding to the external environment is multiplied by the pupil size to calculate the pupil size of the pupil at the brightness reference. This pupil size is used to get the focal length between the objective lens and the object. The motor adjusts the distance between the objective lens and the object according to the focal length, so as to obtain the user's desired height adjustment or reduction of the object through the eyepiece.

The invention also provides a method for automatically adjusting the magnification of a smart telescope, which method includes presetting the distance to observe an object (preset distance); detecting the brightness of external light; detecting the current pupil size of a user; and judging the use Whether the pupil ’s current pupil size is larger than the pupil size preset value; if so, it is further defined that the brightness of the external light is greater than the light reference value, and subsequent users are observing objects at a longer distance and increase the magnification of the smart telescope; if not , It is further defined that the brightness of the external light is less than the reference value of the light, and the user is observing objects at a short distance, and the magnification of the smart telescope is reduced.

1.10‧‧‧Smart Telescope

11‧‧‧Mirror body

110‧‧‧ Objective

112‧‧‧ 稜鏡

114‧‧‧eyepiece

12‧‧‧ Motor

13‧‧‧Visual recognition device

132‧‧‧visual recognition camera

1322‧‧‧Memory Unit

134‧‧‧Processor

136‧‧‧light sensor

30-42‧‧‧Automatic adjustment step flow

50-66‧‧‧Automatic adjustment step flow

FIG. 1 is a schematic diagram showing the internal components of a smart telescope according to the technology disclosed in the present invention.

FIG. 2 is a schematic diagram showing internal components of another embodiment of a smart telescope according to the technology disclosed in the present invention.

FIG. 3 is a flowchart illustrating steps of a method for automatically adjusting the magnification of a smart telescope according to the technology disclosed by the present invention.

FIG. 4 is a flowchart of steps in another embodiment of a method for automatically adjusting a magnification of a smart telescope according to the disclosed technology.

In order to allow your reviewers to further understand and agree on the structural purpose and effect of the present invention, the detailed description is given below in conjunction with the illustrations. The following will describe the technical means and effects used to achieve the purpose of the present invention with reference to the drawings, and the examples listed in the following drawings are only for the purpose of explanation, for the benefit of the review members, but the technical means in this case are not limited to the listed Schema.

Please refer to Figure 1 first. Figure 1 is a schematic diagram of the internal components of a smart telescope. In FIG. 1, the smart telescope 1 includes a lens body 11, a motor 12, and a visual recognition device 13. The lens body 11 includes at least an objective lens 110, a diaphragm 112, and an eyepiece 114. The visual recognition device 13 includes a visual recognition camera 132, a processor 134, and a light sensor 136. The visual recognition device 13 outputs an adjustment signal to the motor 12 according to the pupil size of the user's eyes and the brightness of the ambient light, so that the motor 12 adjusts the magnification of the eyepiece 114 correspondingly to obtain the image value required by the user. The motor 12 adjusts the distance between the objective lens 110 in the lens body 11 according to the adjustment signal output by the visual recognition device 13. The light sensor 136 is used to detect the brightness of the external environment.

In the embodiment of the present invention, the objective lens 110, the chirp 112, and the eyepiece 114 are not limited to any material and the (virtual) focal distance, and only need to have good light permeability. The types of the objective lens 110, 稜鏡 112, and the eyepiece 114 may be lenses such as a concave lens, a convex lens, or a combination of mirrors such as a sawtooth lens, a plane mirror, a concave mirror, or a convex mirror, and the number of the three is not limited. Any combination of mirrors is possible. For example, a Faraday lens group, the user can construct the lens body 11 and the direction of the light path according to his own needs. For example, if a user wants to set up a reflective telescope, he can use a combination of concave mirrors, convex mirrors, flat mirrors and other types of curved mirrors to reflect light for imaging; if he wants to set up a penetrating telescope, he can use concave lens, convex lens, flat mirror and other types of lens combinations. Imaging.

The visual recognition camera 132 is used to detect the pupil size corresponding to the brightness of the user. The visual recognition camera 132 can determine the number of pupils according to different conditions to calculate the pupil size. For example, the device is a monocular telescope, which can be an odd number of pupils. Monocular blindness). If the information obtained is When there is more than one pupil diameter value set, the computing device (not shown in the figure) in the visual recognition camera 132 can obtain, for example, the average, standard deviation, or quartile method based on the set, but it is not limited. Statistics are used to obtain the final pupil size value. The light sensor 136 and the vision recognition camera 132 may be a single element or an array composed of a common complementary metal oxide semiconductor (CMOS), a charge coupled sensor (CCD), or a photodiode. The signals that can be sensed by both the light sensor 136 and the visual recognition camera 132 are generally optical signals, especially visible light, but can also be electromagnetic radiation emitted by the surface of any object such as infrared light, ultraviolet light, X-ray due to heat. , Not limited to a specific light band. The processor 134 is configured to determine whether the brightness is greater than a light reference value.

In addition, it should be further explained that the principle used by the present invention is that when the human eye is looking far away or the ambient light source is dark, the ciliary muscles in the eyes will tighten, and the area occupied by the ciliary muscles will become smaller when viewed from the top. At this time, the suspensory ligament in the eye will also be tightened, so the area of the crystalline lens will be enlarged. From the side, the crystalline lens is similar to a convex lens with a large radius of curvature and a thin thickness. According to optical principles, the focal length of the crystalline lens will change with The lens changes and moves backward, and the pupil area also becomes larger. On the other hand, when the human eye is looking close, or the ambient light source is bright, the ciliary muscles in the eyes will relax. The area will become larger, and the suspensory ligament in the eye will also relax, so the area of the crystalline lens will be relatively small. From the side, the crystalline lens is similar to a convex lens with a small radius of curvature and a thick thickness. According to optical principles, at this time The focal length of the crystalline lens will move backwards with the change of the crystalline lens, and the pupil area will become smaller. According to this principle, we know that the human eye changes its pupil size and focal length with the intensity of the ambient light and the distance of the sight.

Since the pupil shape is generally circular, the pupil size is generally measured by the diameter. If the detected pupil is not circular, the computing device (not shown in the figure) in the visual recognition camera 132 ) A numerical model can be used to fit a shape that is approximately circular and then determine the diameter.

In this embodiment, the brightness value and the light reference value use illuminance as a measurement metric, and lm / m ² (also called lx, lux) as a measurement unit, but are not limited thereto, and other optical measurement units may also be used. The light reference value is generally shown in Table 1, which is the illuminance value obtained under different conditions of the external environment. In the present invention, the type and number of light source conditions are defined as follows, such as the illuminance of ambient light at noon under clear sky, summer or winter, etc., both of which are not limited by the present invention. Of course, it is generally known that the more the number of light source conditions is given, the higher the accuracy of the determination is. Table 1 after the setting is completed is stored in the processor 134.

Therefore, when the user operates the smart telescope, the processor 134 will provide the user with a graphical interface (GUI) to select the light source conditions. After the user clicks any of the conditions, the processor 134 will automatically read the conditions specified by the operator , And automatically bring out the light reference value for subsequent determination. The processor 134 will then perform a determination function to determine whether the brightness of the ambient light source is greater than the light reference value of the ambient light source during use. If the brightness of the ambient light source is greater than the light reference value, the current pupil size corresponding to the brightness value of the external environment is multiplied by the radix of the light to calculate the pupil size of the pupil under the condition of a specific brightness reference value (Hereinafter referred to as optimized pupil size).

It should be noted here that the cardinal number of the light is also related to the conditions of the light source, as shown in Table 2. It can be the data that is preset into the storage unit (not shown in the figure) when the smart telescope is manufactured. The cardinality of the light is also stored in the processor 134, and it should be noted that in the table of cardinality of the light (Table 2), the type and number of light source conditions must be the same as in Table 1 in order for the processor 134 to correspond. The processor 134 obtains the focal length between the objective lens 110 and the object after calculating according to the pupil size.

The processor 134 transmits the focal length signal between the objective lens 110 and the object obtained by the calculation to the motor 12, and the motor 12 adjusts the distance between the objective lens 110 and the object according to the focal length, so as to obtain a user's expectation of viewing the object through the eyepiece 114 Increase or decrease the magnification. Definition of Physics and Geometry In the above, compared with the objective lens 110, the distance of the object is defined as infinity and cannot be changed, so the motor 12 can only adjust the position of the objective lens 110 in the lens body 11. The adjustment of the position is not limited to the adjustment of the objective lens 110, 稜鏡 112, or the eyepiece 114, and is not necessarily a linear movement. The rotation of the lens body 11, the tilt of the objective lens 110 or the eyepiece 114, and any lens adjustment in the lens body 11 only needs to be adjusted. It is the scope of the present invention to make the distance between the objective lens 110 and the object reach the focal length calculated by the processor 134. At this time, the user will obtain the clear image and the required image size. The conversion of focal length and magnification can be derived from (Formula 1) and (Formula 2): 1 / L ’+ 1 / L = 1 / f (Formula 1)

m = L '/ L (Equation 2) where L' is the object distance, L is the image distance, f is the focal length of the lens, and m is the magnification. The image distance can be obtained from Equation 1 through the known object distance and focal distance, and the obtained image distance and focal distance can be brought into the above (Expression 2) to obtain the magnification. The magnification is also calculated by the processor 134 after calculation.

The content executed by the processor 134 has a function of automatically correcting the focal length value of the smart telescope 1 to avoid determining the focal position directly based on the size of the pupil of the eye. Because the pupil size of the eyes will vary according to the external environment, especially the ambient light. In the prior art, the calculation of the focal length did not take into account factors such as the enlargement or reduction of the pupil, so the processor 134 provided by the present invention can take the external ambient light into the consideration range of the focal length setting, so that the user can quickly obtain the desired Screen.

In order to let the user know the magnification of the best image map, the present invention provides a second embodiment. This embodiment is a smart telescope 10, and the configuration and connection relationship are also the same as the first embodiment described above, as shown in FIG. The smart telescope 10 includes a lens body 11, a motor 12, and a visual recognition device 13. The visual recognition device 13 includes a visual recognition camera 132, a processor 134, and a light sensor 136. The configuration and functions of the lens body 11 and the light sensor 136 are the same as those of the previous implementation, and will not be repeated here.

The visual recognition camera 132 of the visual recognition device 13 can determine the number of pupils according to different conditions to calculate the pupil size. The pupil size particularly refers to the pupil diameter, which is a value. The method for obtaining the diameter is as disclosed in the foregoing embodiment. The visual recognition camera 132 further includes a memory unit 1322. The visual recognition camera 132 first captures the pupil size of the user during arbitrary observation, and records the position of the object observed by the user under this condition. For example, when the smart telescope 10 is activated, the visual recognition camera 132 will jump out of the recognition point. The position of this recognition point is fixed to the position of the objective lens 110, 稜鏡 112, or eyepiece 114 in the lens body 11, such as the objective lens 110 and visual recognition. The distance between the cameras 132 can be modeled on the distance between the test subject and the C-shaped card and the E-shaped card during the vision inspection, preferably 2 meters, and can also be adjusted to 1 to 4 meters. At this time, the visual recognition camera 132 captures the size of the user's pupil as a preset pupil size, records the state of the external environment, and stores both in the memory unit 1322 of the visual recognition camera 132.

When a subsequent user observes the object with the smart telescope 1, the visual recognition camera 132 will capture the pupil size of the user at this time and transmit it to the processor 134, and the processor 134 will determine whether the measured pupil size is greater than the pupil size preset value. Using the principle that the eyes of the person described above will have changes in pupil size and focal length depending on the intensity of the ambient light and the distance of the object, if the measured pupil size is greater than the preset pupil size, it can be judged that the user observes far away. The object, and the brightness of the external ambient light is greater than the reference value of the light, and an up signal is output to the motor 12. The motor 12 is used to adjust the position or distance of each component in the lens body 11 according to the height-up signal so as to increase the magnification. If the measured pupil size is smaller than a preset pupil size value, it can be determined that the user observes a nearby object, and the brightness of the external ambient light is smaller than the light reference value, and a signal for lowering is output to the motor 12. The motor 12 can adjust the position or distance of each component in the lens body 11 according to the lower signal so as to reduce the magnification.

The content executed by the processor 134 has a function of determining the magnification of the lens body 11 according to the size of the pupil of the user, and avoids directly determining the brightness of the ambient light. Because of the eyes The pupil size is the result of the double influence of the external ambient light and the distance of the object. Therefore, the processor 134 provided in this embodiment directly takes the result into consideration, so that the user can quickly obtain the desired picture. It is convenient to know the exact magnification, and to directly know the exact magnification without recording the state of the environment.

FIG. 3 is a third embodiment of the present invention. This is a flowchart of the steps of a method for automatically adjusting the magnification of an optical device. This method can be described in conjunction with the smart telescope 1 in FIG. 1. Step 30: Detect the brightness of the external light. In this step, the light sensor 136 can be used to detect the brightness of the current ambient light. Next, in step 32, the pupil size and pupil number of the user are detected. In this step, the visual recognition camera 132 in the visual recognition device 13 is used to detect the pupil size and the pupil number of the user. In step 34, it is determined whether the current pupil size of the user is greater than a preset pupil size. If yes, go to step 36; if not, go to step 40. According to step 34, if the current pupil size of the user is greater than a preset value of the pupil size, then at step 36, the current pupil size is multiplied by a predetermined ray base to obtain an optimized pupil size. The light source conditions of the light base are the same as the light source conditions of the light reference value. Following step 38, the focal length of the objective lens 110 is obtained according to the product of the two. In step 38, a focal length signal is obtained according to the calculation of the optimized pupil size, and the distance of the objective lens 110 is adjusted according to the focal length signal. The distance of the objective lens 110 can be adjusted by the motor 12. If in step 34, if the current pupil size of the user is smaller than a preset value of the pupil size, step 40 is performed, and the focal length of the objective lens 110 is directly derived from the pupil size. In step 40, the distance of the objective lens 110 is adjusted by the motor 12 according to the focal length signal. Step 42 ends the step of automatically adjusting the magnification.

According to the above, according to the third embodiment, the focal length of the objective lens 110 can be derived directly from the optimized pupil size, the brightness of the reference light source and the external light source after the determination. The determination of the focal length adds light factors, which can reduce the error between imaging and user experience. The third embodiment is not limited to the use of the smart telescope 1 as shown in FIG. 1, and the user can use other devices to complete the method.

FIG. 4 is another embodiment of the present invention. This is a method for automatically adjusting the magnification. This method is described in conjunction with the smart telescope 10 disclosed in FIG. 2 of the present invention. The method is described in detail later. Step 50: Obtain the distance between the user's pupil and the observed object. In this step, the visual recognition camera 132 can be used to obtain the distance between the user's pupil and the object. Then step 52 is to detect the brightness of the external light. In this step, the light sensor 136 can be used to detect the external light intensity. Step 54: Detect the current pupil size of the user. In this step, the visual recognition camera 132 is used to detect the current pupil size of the user. Next, step 56 determines whether the current pupil size of the user is greater than a preset value of the pupil size. In this step, the processor 134 is used for judgment. If yes, go to step 58; if not, go to step 62. According to the above step 56, if the current pupil size of the user is larger than a preset value of the pupil size, then in step 58, the brightness of the external light is set to be larger than the light reference value. Following step 60, the user is observing objects at a longer distance, and the magnification of the smart telescope 10 is increased. In this step 60, after the processor 134 judges that the brightness of the external light is greater than the light reference value, it transmits this heightening signal to the motor 12, and the motor 12 increases the magnification of the smart telescope 10.

If in step 56 above, the current pupil size of the user is smaller than a preset value of the pupil size, then step 62 is performed to set the brightness of the external light to be smaller than the light reference value. Also in this step, the processor 134 further defines that the brightness of the external light is smaller than the light reference value. Following step 64, the user is observing objects at a short distance, and the magnification of the smart telescope 10 is reduced. In this step, since the brightness of the external light is less than the light reference value, the processor 134 can determine that the distance between the user and the object is close, and then transmit the down signal to the motor 12 and adjust the magnification of the smart telescope 10 low. Following step 66, the step of automatically adjusting the magnification is ended.

In summary, the intelligent telescopes 1 and 10 and the method for automatically adjusting the magnification provided by the present invention can refer to the behavior of the pupil and the eyeball to determine the magnification required by the user and the observed image. And increase the consideration of ambient light sources to improve the recognition rate of the image and accurately reach the magnification required by the user, with fast, accurate and highly recognizable.

Although the present invention is disclosed above with the foregoing preferred embodiments, it is not intended to limit the creation. Any person skilled in the art can make some modifications and decorations without departing from the spirit and scope of the present invention. The scope of patent protection of this creation shall be determined by the scope of the patent application attached to this specification.

Claims (9)

A smart telescope includes a lens body with at least one eyepiece and an objective lens, a motor, a light sensor, a visual recognition camera, and a processor, and is characterized in that the light sensor is used to detect a A brightness level of the external environment; the visual recognition camera is used to detect a pupil size corresponding to the brightness level of a user; the processor is used to determine whether the brightness level is greater than a light reference value, and if so, then Multiplying the current pair of pupil sizes corresponding to the brightness level of the external environment by a light base to calculate a pupil size when the pair of pupils is at a brightness reference, and according to the pair of pupils at the brightness reference, The pupil size at the time to obtain a focal distance between the objective lens and an object; and the motor adjusts the distance between the objective lens and the object according to the focal length to obtain the user's expectations of the object viewed by the eyepiece Increase the magnification or decrease the magnification. The intelligent telescope system according to item 1 of the scope of patent application, wherein the light sensor is a complementary metal oxide semiconductor (CMOS) sensor or a charge coupled (CCD) sensor. A method for automatically adjusting the magnification of a smart telescope includes: presetting a distance to observe an object; detecting a brightness of an external light; detecting a pupil size of a current pupil of a user; and judging the user Whether the current pupil size is greater than a pupil size preset value, and if so, it is further defined that the brightness of the external light is greater than a light reference value, then the user is observing the object at a greater distance, and the smart telescope If it is not, then it is further defined that the brightness of the light from the outside is smaller than the light reference value, then the user is viewing the object at a shorter distance, and the magnification of the smart telescope is turned down. The method according to item 3 of the patent application scope, wherein the distance of the object is preset to 1-6 meters. The method according to item 3 of the patent application, wherein the brightness of the light from the outside is detected by a light sensor. The method according to item 5 of the patent application, wherein the light sensor is a complementary metal oxide semiconductor (CMOS) sensor or a charge coupled (CCD) sensor. The method according to item 3 of the scope of patent application, wherein the preset pupil size is 0.8-1.2 cm in diameter. The method according to item 3 of the patent application range, wherein a luminous flux of the light reference value is 50000-60000 lux (lx). The method according to item 3 of the scope of patent application, wherein the pupil size of the current pupil of the user is sensed by a visual recognition camera.