TWI546567B - Range finder using binoculars - Google Patents

Description

Binocular telescope

The invention relates to a range finder, in particular to a binocular telephoto range finder.

When the known range finder is aimed at the object to be measured, most of the users cannot observe and aim at the object to be measured through both eyes. Only one eye can be used to observe and aim at the object to be tested, and the other eye needs to be closed for a long time. A closed single eye often causes discomfort to the user.

In order to avoid the discomfort caused by the tightness of the single eye when aiming at the object to be tested, a double-tube telephoto range finder is disclosed in US Pat. No. 8,149,507 B2, which can use both eyes to observe and aim at the object to be measured while aiming at the object to be tested. This patent uses Abbe-Koenig prism, where the path of the object through the quasi-center to the eye is not on the same axis.

In view of the above, the main object of the present invention is to provide a dual-cylinder telephoto range finder capable of observing the object to be measured while observing and aiming at the object to be measured, and the object to be measured passes through the center of the eye to the eye through the optical path on the same axis. on-line.

The dual-cylinder telephoto range finder of the present invention comprises a central rotating shaft, a two-eyepiece group, a two objective lens group, a two-turn group, a light emitter and an optical receiver. The two eyepiece groups are respectively disposed on both sides of the central rotating shaft to view a first light beam reflected by an object to be measured through the two eyepiece groups. The two objective lens sets are respectively disposed on one side of the two eyepiece groups and on both sides of the central rotating shaft. Two groups are set separately It is placed between the two eyepiece groups and the two objective lens sets and is located on both sides of the central rotating shaft. The light emitter is disposed on one side of the two turns, and the light emitter emits a second light beam to the object to be tested. The light receiver is disposed on one side of the two groups, and the light receiver receives the second light beam reflected by the object to be tested. The two groups include a first layer, an optical multilayer film, a second layer and a third layer, and the optical multilayer film is disposed between the first layer and the second layer, and the optical multilayer film allows The second beam passes and the first beam will be reflected. After the first beam and the second beam are incident on the first chirp along a first axis, the first beam is first totally reflected and then reflected by the optical multilayer film, then leaves the first chirp and enters the third chirp, and then passes through the whole After the reflection, along the first axis and away from the third 稜鏡 in the same direction as the incident, the second beam first passes through the first reflection and then passes through the first 稜鏡 and then passes through the optical multilayer film and enters the second 稜鏡, and then passes through the total reflection. A second axis is drawn and exits the second turn from the opposite direction of incidence.

The third one is a Roof Prism.

The first side includes a first side, a second side and a third side, and the second side comprises a fourth side, a fifth side and a sixth side, and the fifth side faces the third side, The third layer includes a seventh surface, an eighth surface, a first Roof Surface and a second Roof Surface, the seventh surface faces the second surface, and the optical multilayer film is disposed on the fifth surface Between the third side and the third side.

The third side is glued to the fifth side.

The first beam is a visible light and the second beam is an infrared light.

The light emitter is a semiconductor laser, and the light receiver is a crash light diode (APD) or a light diode (PD).

The dual-cylinder telephoto range finder of the present invention may further include two transmissive liquid crystal displays (LCDs) respectively disposed between the two eyepiece groups and the two sets.

The dual-tube telephoto range finder of the present invention may further comprise two organic light-emitting diodes (OLEDs) respectively disposed between the two eyepiece groups and the two groups.

The binocular telephoto range finder of the present invention may further comprise two flat glass plates respectively disposed between the two eyepiece groups and the two eye groups.

The binocular telephoto range finder of the present invention may further comprise two focusing lenses respectively disposed between the two groups and the two objective lens groups.

The above described objects, features, and advantages of the invention will be apparent from the description and appended claims

100‧‧‧Double telescopic rangefinder

10‧‧‧ Launching tube

30‧‧‧Receiving tube

50‧‧‧ center shaft

11, 31‧‧‧ eyepieces

12, 32‧‧‧ flat glass

121, 321 ‧ ‧ Alignment

122, 322‧‧‧ distance measurement

13, 33‧‧‧稜鏡

14, 34‧‧ ‧ focus lens

15‧‧‧Semiconductor laser

35‧‧‧Crash Light Dipole (APD)

16, 36‧‧‧ objective lens group

331‧‧‧ first

3311‧‧‧ first side

3312‧‧‧ second side

3313‧‧‧ third side

333‧‧‧Second

3331‧‧‧ fourth side

3332‧‧‧The fifth side

3333‧‧‧ sixth side

335‧‧‧ third

3351‧‧‧ seventh side

3352‧‧‧ eighth side

3353‧‧‧First roof surface

3354‧‧‧Second roof surface

3355‧‧‧ Roof

337‧‧‧Optical multilayer film

38‧‧‧ Visible light

39‧‧‧Infrared light

41‧‧‧First axis

42‧‧‧second axis

Figure 1A is a schematic cross-sectional view of one embodiment of a dual-cylinder telephoto rangefinder in accordance with the present invention.

Fig. 1B is a schematic view showing an observation screen of the flat glass of Fig. 1A.

Figure 2A is a schematic diagram of the visible light path of the group 第1A.

Figure 2B is a schematic diagram of the infrared light path of the group 第1A.

Fig. 3 is a schematic view showing the visible light path and the infrared light path of the receiving barrel of Fig. 1A.

Figure 4 is a schematic diagram of an observation screen of a transmissive liquid crystal display (LCD) or an organic light emitting diode (OLED).

Please also refer to Figures 1A and 1B. Figure 1A is a schematic cross-sectional view of one embodiment of a dual-cylinder telephoto rangefinder in accordance with the present invention. Fig. 1B is a schematic view showing an observation screen of the flat glass of Fig. 1A. As shown in FIG. 1A, the binocular telemetry range finder 100 includes a transmitting barrel 10, a receiving barrel 30 and a center rotating shaft 50. The transmitting barrel 10 and the receiving barrel 30 are coupled to the central rotating shaft 50, respectively. The firing barrel 10 includes an eyepiece set 11, a flat glass 12, a stack of lenses 13, a focus lens 14, a semiconductor laser 15 and an objective lens set 16. The receiving barrel 30 includes an eyepiece set 31, a flat glass 32, a stack 33, a focus lens 34, and a colliding light diode. (APD) 35 and an objective lens set 36. Eyepiece group 11 and eyepiece group 31, flat glass 12 and flat glass 32, cymbal group 13 and cymbal group 33, focus lens 14 and focus lens 34, semiconductor laser 15 and colliding light diode (APD) 35 and The objective lens group 16 and the objective lens group 36 are respectively located at the position where the central axis of rotation 50 is the axis of symmetry, and the haptics group 13 and the cymbal group 33 are disposed so that the central axis 50 is symmetric with respect to the axis of symmetry.

The eyepiece groups 11, 31, the flat glass 12, 32, the cymbal groups 13, 33, the focus lenses 14, 34 and the objective lens groups 16, 36 constitute a telephoto system of the binocular telephoto rangefinder 100. The user's eyes can view a distant object (not shown) through the eyepiece groups 11, 31, and the distance between the eyepiece group 11 and the eyepiece group 31 can be adjusted via the center shaft 50 to suit the distance between the eyes of the user. The plate glass 12, 32 is marked with a centering 121, 321 (as shown in Figure 1B) for aiming at the object under test. The focus lens 14, 34 can be adjusted to change its distance from the objective lens group 16, 36 so that the object to be measured can be clearly imaged.

The semiconductor laser 15, the cymbal group 13, the focus lens 14, and the objective lens group 16 constitute a launch system of the binocular telemetry range finder 100. The crash light diode (APD) 35, the 稜鏡 group 33, the focus lens 34, and the objective lens group 36 constitute a receiving system of the binocular telephoto range finder 100. When the user wants to measure the distance, the user's eyes first view the remote object (not shown) through the eyepiece group 11 and the eyepiece group 31, and then the alignments 121, 321 indicated by the plate glass 12, 32 (eg 1B shows) aligning the object to be measured to complete the object to be measured, and then the semiconductor laser 15 emits an infrared light, sequentially passing through the group 13, the focus lens 14, the objective lens group 16, and finally the direction. The measured object, the measured object can reflect the incident infrared light, so that the reflected infrared light is returned to the binocular telescope range finder 100, and the infrared light that is returned to the binocular telescope range finder 100 sequentially passes through the objective lens group 36, and is adjusted. The focal lens 34 and the cymbal group 33 are finally received by the colliding light diode (APD) 35, and the distance of the measured object can be calculated by subsequent data processing.

In the following, the structure of the 稜鏡 group will be further described in detail, and the optical path of visible light and infrared light passing through the 稜鏡 group will be described.

Please also refer to Figures 2A and 2B. Figure 2A is the top of Figure 1A A schematic diagram of the visible light path of the group, and FIG. 2B is a schematic diagram of the infrared light path of the group 第1A. As shown in FIG. 2A, the crucible group 33 includes a first crucible 331, a second crucible 333, a third crucible 335, and an optical multilayer film 337. The first side 331 includes a first surface 3311, a second surface 3312, and a third surface 3313. The second port 333 includes a fourth surface 3331, a fifth surface 3332, and a sixth surface 3333. The third crucible 335 includes a seventh surface 3351, an eighth surface 3352, a first roof surface 3353 and a second roof surface 3354, a first roof surface 3353 and The second Roof Surface 3354 meets at the ridge 3355. The seventh surface 3351 faces the second surface 3312, and the fifth surface 3332 faces the third surface 3313. The optical multilayer film 337 is disposed between the third surface 3313 and the fifth surface 3332. The optical multilayer film 337 allows only infrared light to pass therethrough, and the visible light will be reflected. The third face 3313 of the first weir 331 is glued to the fifth face 3332 of the second weir 333.

When a visible light 38 is incident on the first ridge 331, the first surface 3311 is directly incident on the second surface 3312, and the visible light 38 directed to the second surface 3312 is totally reflected, so that the visible light 38 changes direction of travel. The three sides 3313 and the optical multilayer film 337, because the optical multilayer film 337 only allows infrared light to pass, the visible light will be reflected, so the visible light 38 will be reflected by the reflection changing direction of travel toward the second surface 3312, and the second surface 3312 is emitted first The 稜鏡331 is again directed toward the third 稜鏡335, and the visible light 38 directed at the third 稜鏡335 will directly penetrate the seventh surface 3351, and then the visible light 38 will be generated on the eighth surface 3352, the ridge 3355 and the seventh surface 3351. The reflection changes the direction of travel, and finally the third aperture 335 is emitted by the eighth surface 3352. The direction in which the visible light 38 is incident on the crucible group 33 is the same as the direction of the exit pupil group 33 and on the same axis.

Referring to FIG. 2B, when an infrared light 39 is incident on the first ridge 331, the first surface 3311 directly penetrates the second surface 3312, and the infrared light 39 that is incident on the second surface 3312 is totally reflected, so that the infrared The light 39 changes the traveling direction to the third surface 3313 and the optical multilayer film 337. Since the optical multilayer film 337 only allows infrared light to pass, the infrared light 39 will directly penetrate the third surface. 3313 and the optical multilayer film 337 are incident on the second crucible 333, and the infrared light 39 incident on the second crucible 333 will directly penetrate the fifth surface 3332, then the sixth surface 3333, and then the sixth surface 3333. The reflection changes the direction of travel, and finally the second surface 333 is emitted by the fourth surface 3331. The direction in which the infrared light 39 is incident on the crucible group 33 is opposite to the direction of the exit pupil group 33 and is not on the same axis.

The third crucible 335 in this embodiment may be Roof Prism, such as Pechan Prism.

In summary, when the visible light 38 and the infrared light 39 are simultaneously incident on the first group 3311, the visible light 38 and the infrared light 39 will be split and proceed in different directions, and the visible light 38 will be emitted from the eighth surface 3352. The mirror group 33, and its traveling direction is not changed, and the infrared light 39 will exit the stack 33 from the fourth face 3331 and change its traveling direction to advance in the opposite direction. It is also possible to inject the infrared light 39 from the fourth surface 3331 into the crucible group 33, and finally to eject the crucible group 33 from the first surface 3311, and change its traveling direction to advance in the opposite direction, and the visible light 38 still enters the edge from the first surface 3311. The mirror group 33 finally emits the cymbal group 33 from the eighth surface 3352, and its traveling direction is not changed.

In this embodiment, the cymbal group 13 is the same as the cymbal group 33 except that the cymbal group 13 and the cymbal group 33 are symmetrical with each other with the central axis of rotation 50 as an axis of symmetry, so visible light and infrared light pass through. The optical path of the group 13 is similar to the optical path when passing through the group 33, and therefore the description thereof will be omitted.

Please refer to FIG. 3, which is a schematic diagram of the visible light path and the infrared light path of the receiving lens barrel of FIG. 1A. The object to be measured can reflect incident visible light and infrared light, and the reflected visible light and infrared light are directed to the binocular telephoto range finder. When a visible light 38 and an infrared light 39 reflected by the measured object are incident on the receiving lens barrel 30, the visible light 38 and the infrared light 39 will first pass through the objective lens group 36 and the focusing lens 34 along a first axis 41, and then The stack 33 is incident on the first face 3311. The infrared light 39 will be totally reflected by the second surface 3312 to change the traveling direction, and then penetrate the third surface 3313, the optical multilayer film 337 and the fifth surface 3332, and then totally reflected by the sixth surface 3333, and the fourth surface 3331 is emitted from the edge. The mirror group 33 finally enters the crash light diode (APD) 35 along a second axis 42. On the other hand, the visible light 38 is totally reflected by the second surface 3312 and then reflected by the optical multilayer film 337. The second surface 3312 emits the first flaw 331 and is directed to the third crucible 335 to be directed to the third crucible. The visible light 38 of 335 will directly penetrate the seventh surface 3351, and then the visible light 38 will be totally reflected on the eighth surface 3352, the ridge 3355 and the seventh surface 3351 to change the traveling direction, and finally the third surface 335 is emitted by the eighth surface 3352. Then, the flat glass 32 and the eyepiece group 31 are passed along the first axis 41, and the user can view the image of the object through the eyepiece group 31.

Since the optical path of the visible light beam and the infrared light passing through the transmitting lens barrel 10 of FIG. 1A is similar to the light path passing through the receiving lens barrel 30, the illustration thereof is omitted, and only the following text will be briefly described. Referring to FIG. 1A, the infrared light emitted by the semiconductor laser 15 is first incident on the 稜鏡 group 13 from the fourth surface, and then the 稜鏡 group 13 is emitted from the first surface, and then sequentially passed through the focus lens 14, the objective lens group 16, and finally The object is directed to the object to be tested, and the object to be detected reflects the incident infrared light back to the binocular telescope 100 to be received by the receiving barrel 30. When the visible light reflected by the measured object is directed to the transmitting barrel 10, the visible light will first pass through the objective lens group 16 and the focusing lens 14, and the first surface is incident on the group 13 and then the eighth surface is emitted from the group 13. Then, the plate glass 12 and the eyepiece group 11 are sequentially passed through, and the user can view the image of the object to be measured through the eyepiece group 11.

As can be seen from Fig. 3, the visible light path passes through the center of the flat glass (see Fig. 1B) and the eyepiece group reaches the user's eyes (not shown), that is, the object to be tested (not shown), the center of gravity, and the user. The eyes are on the same axis, so just aim the alignment (see Figure 1B) against the object to be tested (not shown) and aim at the object without adjusting the aiming position.

In the above embodiment, the flat glass 12, 32 can also be changed into a transmissive liquid crystal display (LCD) or an organic light emitting diode (OLED). At this time, the cross-sectional view of the binocular telephoto rangefinder, the visible light path and the infrared light The optical path diagram is similar to the first embodiment and the third embodiment in the above embodiment, so the illustration is omitted, and the flat glass 12, 32 is changed to a transmissive liquid crystal display (LCD). Or the difference between the organic light emitting diode (OLED) and the above embodiment, mainly in the observation screen of the transmissive liquid crystal display (LCD) or the organic light emitting diode (OLED), except for the alignments 521 and 721 (as shown in FIG. 4) In addition to the display, the distance measurement values 522, 722 are also added (as shown in Fig. 4).

In the above embodiments, it is also within the scope of the present invention to interchange semiconductor lasers with colliding photodiodes (APDs).

In the above embodiments, it is also within the scope of the present invention to change the crash photodiode (APD) to a photodiode (PD).

100‧‧‧Double telescopic rangefinder

10‧‧‧ Launching tube

11‧‧‧ Eyepieces

12‧‧‧ flat glass

13‧‧‧稜鏡 group

14‧‧‧focus lens

15‧‧‧Semiconductor laser

16‧‧‧ objective lens group

30‧‧‧Receiving tube

31‧‧‧ eyepieces

32‧‧‧ flat glass

33‧‧‧稜鏡 group

34‧‧‧focus lens

35‧‧‧Crash Light Dipole (APD)

36‧‧‧ objective lens group

50‧‧‧ center shaft

Claims (10)

A binocular telephoto range finder includes: a central rotating shaft; two eyepiece groups respectively disposed on two sides of the central rotating shaft to view a first light beam reflected by an object to be measured through the eyepiece groups And a pair of objective lenses, which are respectively disposed on one side of the eyepiece group and located on two sides of the central axis; and two sets of the eyepieces respectively disposed in the eyepiece group and the objective lens group Between the two sides of the center axis; a light emitter, the light emitter is disposed on one side of the stack, the light emitter emits a second light beam to the object to be tested; and a light receiving The light receiver is disposed on one side of the group of the plurality of groups, the light receiver receiving the second light beam reflected by the object to be tested; wherein the group of the first group includes a first one An optical multilayer film, a second germanium, and a third germanium, the optical multilayer film being disposed between the first germanium and the second germanium, the optical multilayer film allowing the second light beam to pass, the first The beam will be reflected; wherein the first beam and the second beam edge After a first axis is incident on the first ridge, the first beam is first totally reflected and then reflected by the optical multilayer film, then exits the first 稜鏡 and is incident on the third 稜鏡, and then after total reflection The first axis exits the third turn in the same direction as the incident, and the second light beam first passes through the first reflection and then passes through the optical multilayer film and enters the second defect, and then after total reflection The second crucible is separated along a second axis and opposite to the incident direction. The dual-cylinder telephoto rangefinder of claim 1, wherein the third crucible is a Roof Prism. The dual-cylinder telephoto range finder according to claim 1, wherein the first cymbal includes a first surface, a second surface, and a third surface, and the second cymbal includes a fourth surface, a fifth surface and a sixth surface, the fifth surface facing the third surface, the third surface comprising a seventh surface, an eighth surface, a first roof surface and a second roof a surface of the second surface facing the second surface, the optical multilayer film being disposed between the fifth surface and the third surface. The dual-cylinder telephoto range finder of claim 3, wherein the third surface is glued to the fifth surface. The dual-cylinder telephoto range finder according to claim 1, wherein the first light beam is a visible light, and the second light beam is an infrared light. The dual-cylinder telephoto range finder according to claim 1, wherein the light emitter is a semiconductor laser, and the light receiver is a crash light diode (APD) or a photodiode (PD). The dual-cylinder telephoto range finder according to claim 1, further comprising a two-transmissive liquid crystal display (LCD) disposed between the eyepiece group and the stack of the eyepieces. The dual-cylinder telephoto range finder according to claim 1, further comprising two organic light-emitting diodes (OLEDs) respectively disposed between the eyepiece groups and the groups of the groups. The dual-cylinder telephoto range finder according to claim 1, further comprising two flat glass disposed between the eyepiece group and the stack of the eyepieces. The dual-cylinder telephoto range finder according to claim 1, further comprising a dichroic lens disposed between the tuft group and the objective lens group.