Binocular see-through vision device for long and short distances

Abstract

The present disclosure relates to a see-through binocular device (100) for long, intermediate, and short distances, comprising two see-through optical modules (110a, 110b), each configured to project an image (1a, 1b, 1c; 2a, 2b, 2c) of an object (1, 2) onto a first plane without inverting the image. and each see-through optical module (110a, 110b) comprises: i. an optical element (120) having a variable optical power; and ii. an optical projection system (130) configured to project the optical element (120) having the variable optical power onto a second plane (120'); the input optical axes (113a, 113b) of the two see-through optical modules (110a, 110b) intersect at a plane corresponding to a near distance, and the fields of view (112a, 112b) completely or nearly completely overlap for viewing objects located at a near distance. The present disclosure also relates to systems and methods for determining sensory ocular dominance and / or determining sensory ocular dominance strength.

Description

[Technical Field]

[0001] The present disclosure is within the field of visual optics. [Background technology]

[0002] Traditional binoculars are typically used only for far-distance viewing—usually at a distance of a few meters—and are commonly used to greatly magnify objects located far away. The magnification of traditional binoculars typically ranges from 7x to 12x. The field of view (which is the area of ​​object space that can be seen through the optical system) also typically decreases proportionally with the magnification: the greater the magnification, the smaller the field of view. In fact, binoculars are not intended for viewing objects located at intermediate and close distances. While the definitions of far, intermediate, and close distances are not uniform in the field, a good standard used herein is to consider anything over 2m (up to infinity) as far distance; 2m to 50cm as intermediate distance; and 25cm to 50cm as close distance. This reference regarding distances is taken from Non-Patent Document 1.

[0003] FIG. 1A shows binoculars 10 used by a user, with the left and right eyes 11a, 11b shown schematically. The binoculars 10 are used to view an object 1 located at a certain distance; in the illustrated example, object 1 is a copy of Don Quixote located approximately 40 cm from the user's position. The binoculars 10 are also used to view another object 2 located at a greater distance; in this case, object 2 is a windmill located approximately 100 m from the user. The field of view generated by the left optical channel 10a of the binoculars is represented by striped region 12a, and the field of view generated by the right optical channel 10b of the binoculars is represented by striped region 12b.

[0004] The left part of Fig. 1B shows images 2a, 2b actually perceived by a user of an object 2 (i.e., a wind turbine) located at a long distance through the left and right optical channels 10a, 10b of the binoculars, respectively, which are zoomed-in portions of the object 2 (in the example shown, the user sees a portion of the wind turbine blades) and have slightly different fields of view. Since the fields of view 12a and 12b overlap at a long distance, the two images 2a, 2b seen by the user with the binoculars overlap significantly, and the image 2c produced by the binoculars is represented schematically on the image on the right side of Fig. 1B.

[0005] Similar to Figure 1B, the left portion of Figure 1C shows images 1a and 1b actually perceived by a user of an object 1 (i.e., the book Don Quixote) located at close range through left and right optical channels 10a and 10b, respectively. However, fields of view 12a and 12b do not overlap at intermediate distances, at least at close ranges, and the two images seen by the user using binoculars do not overlap. As a result, no actual binocular vision occurs for the user when viewing the book Don Quixote through binoculars; the user actually perceives two separate, non-overlapping images 1c of the book Don Quixote, as schematically represented in the image on the right of Figure 1C.

[0006] In reality, binoculars do not produce binocular vision when viewing objects located at intermediate or close distances. At these distances, typically closer than 2 m, the fields of view generated by the left and right optical channels are separate; the result is a very uncomfortable viewing experience for the observer. Furthermore, in addition to this separation effect, binoculars usually cannot focus the image at intermediate and close distances. In fact, binoculars are not intended for viewing objects located at intermediate and close distances.

[0007] These undesirable effects are exacerbated when the field of view of each of the left / right optical channels is reduced.

[0008] In another respect, the author is aware of U.S. Pat. No. 6,299,499, which discloses a compact simultaneous vision simulator instrument that projects an adjustable lens onto the pupil plane of a subject. The instrument disclosed in this patent uses time multiplexing techniques to allow the simulation of multifocal lenses in a monocular manner, provided the adjustable lens is fast enough. However, this instrument does not provide a working solution for binocular vision at near, intermediate, and far distances. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] European Patent Application Publication No. 3053512 [Non-patent literature]

[0010] [Non-Patent Document 1] Buckhurst PJ et al, “Multifocal Intraocular Lens Differentiation Using Defocus Curves”, Investigative Ophthalmology & Visual Science, June 2012, Vol. 53, No. 7 Summary of the Invention [Problem to be solved by the invention]

[0011] Therefore, there is a need for a binocular device that overcomes the shortcomings of existing solutions and allows a user to view objects located at close, intermediate, and far distances. [Means for solving the problem]

[0012] The present disclosure is intended to address the shortcomings of prior art binocular devices by providing a see-through binocular device that creates significant overlap areas between the fields of view of the left and right channels for far, intermediate, and near distances, which will provide stereoscopic vision for all distances.

[0013] Throughout this text, a see-through binocular device may also be referred to as a binocular device.

[0014] Aspects of the present disclosure relate to a see-through binocular device for long, intermediate and close distances, the binocular device comprising: two see-through optical modules, each configured to project an image onto a first plane without inverting the image; Each see-through optical module comprises: i. an optical element having variable optical power; and ii. an optical projection system configured to project an optical element having variable optical power onto a second plane; Equipped with The output optical axis of each see-through optical module may have an equal deviation with respect to the input optical axis, this deviation preferably being equal to zero (i.e., there is no deviation between the output axes of the two see-through optical modules) so as not to cause double vision to the user of the binocular device; The input axes of the two see-through optical modules intersect at a plane corresponding to the near distance, and the fields of view overlap completely or nearly completely for viewing objects located at close range.

[0015] A binocular device defined in this way provides fields of view through each optical module that are essentially completely overlapping for viewing objects located at close range, and therefore separated and crossed for viewing objects located at far range, crossed meaning that the right eye's field of view for far range is on the left side and the left eye's field of view for far range is on the right side.

[0016] When a binocular device is used, the first plane essentially coincides with the plane containing the retina of the user's eye, and the second plane essentially coincides with the pupil plane of the user's eye.

[0017] In any aspect or embodiment of the present disclosure, the optical element having variable optical power may be a light tunable lens.

[0018] The optical channel can have a magnification ranging from 0.8 to 1.25, with a magnification of about 1 being the preferred option.

[0019] In certain embodiments, each optical element having variable optical power is configured to set a focus for near, intermediate, or far distance viewing. Each optical element having variable optical power can operate independently of other optical elements having variable optical power. This allows the binocular device of the present disclosure to simulate ophthalmic corrections that may vary from eye to eye.

[0020] Additionally or alternatively, the optical element with variable optical power can be configured to generate multifocal simultaneous vision by time multiplexing.

[0021] The binocular device of the present disclosure therefore allows its user to experience a different correction in each eye, which is becoming increasingly common in presbyopia correction: Monocular vision: a different single-focus correction in each eye, one corrected for distance (usually the dominant eye) and the other corrected for near distance (usually the non-dominant eye); Modified monocular vision: one eye is monofocal corrected for distance vision (usually the dominant eye) and the other eye is multifocal corrected (usually the nondominant eye); or Combination: A different multifocal correction in each eye.

[0022] In a specific embodiment, each projection system includes first and second lens groups with equal focal lengths F, which are similar, preferably identical, but have reversed orientations relative to each other, with the first lens group being located at a distance F relative to a major surface of the optical element with variable optical power, and the major surface of the second lens group being located at a distance 2F relative to a major surface of the first lens group. Thus, a conjugate image of the optical element with variable optical power at unit magnification is generated at a distance F behind the second lens group, and the projection system comprising two lens groups acts as an afocal system, which means that it does not correct for vergence of light rays introduced by the optical element with variable optical power.

[0023] In certain embodiments, the projection system includes at least four mirrors to reverse the inversion introduced by the first and second lens groups. A prism or set of prisms can also be included in the projection system to invert the image produced by the first and second lens groups. A non-inverted image can also be produced by at least a third lens group.

[0024] In certain embodiments, each projection system includes at least one block of freeform optics used in combination or without other lens groups and / or mirror groups and / or prism groups, capable of producing a non-inverted image of an optical element with variable optical power at unity magnification.

[0025] In certain embodiments, the see-through binocular device includes an additional offset lens positioned next to the optical element with variable optical power. This further modifies the convergence of light and shifts the refractive range of the binocular device to a desired position. In the context of this disclosure, this should be understood to include within 0 mm to 10 mm; the closer the better. The offset lens can be positioned before or after the optical element with variable optical power—in the direction of the optical path.

[0026] In certain embodiments, the distance between the first and second lens groups may vary and may be different from 2F, thereby further modifying the convergence of the light and shifting the refractive range of the entire binocular device to a desired position. This embodiment has the potential advantage of being more compact and not requiring an additional lens to provide the offset.

[0027] The see-through binocular device may include a mechanism for adjusting the interpupillary distance, which allows the see-through optical module to be moved horizontally without affecting the direction of the optical axis.

[0028] In any of the aforementioned embodiments, the see-through binocular device can be configured such that a first distance between the second plane and a specific location—which location essentially coincides with the object being observed—is equal to a second distance corresponding to the distance traveled by light from the specific location to the major surface of the optical element having variable optical power after being reflected by a mirror, thereby matching the actual location of the object being observed with the location perceived by the user when viewed through the binocular device. This can be achieved by providing at least a mirror upstream of the optical element having variable optical power in each see-through optical module.

[0029] Another aspect of the present disclosure relates to a method for projecting objects located at far, intermediate, and near distances without inversion, the method comprising: projecting an object onto a first plane without inversion using a first see-through optical module having an optical element with variable optical power, the projecting comprising projecting the optical element with variable optical power onto a second plane (PP); projecting the object onto the first plane without inverting it using a second see-through optical module having an optical element with variable optical power, the projecting step including projecting the optical element with variable optical power onto the second plane. Including, This method further The process of arranging the input optical axes of two see-through optical modules so that they intersect at a plane corresponding to the short distance. Includes:

[0030] Typically, the output optical axes of the see-through optical modules are arranged to have the same deviation from the input optical axes of the respective see-through optical modules.

[0031] According to the above method, two fields of view are generated, which completely or nearly completely overlap in order to view objects located at close range.

[0032] Additionally or alternatively, the optical elements with variable optical power can be configured to generate multifocal simultaneous vision by time multiplexing.

[0033] Another aspect of the present disclosure relates to a see-through binocular system comprising: a see-through binocular device as defined above; and an accessory for supporting one or more trial lenses, wherein the accessory and the see-through binocular device comprise attachment means for attaching them to each other in a secure manner so that the trial lenses are centered relative to the input optical axis of the see-through optical module.

[0034] The attachment means may include one or more magnets attached on the accessory and on the see-through binocular device, or may comprise a plug and socket connector.

[0035] Another aspect of the present disclosure relates to a system for determining sensory ocular dominance and / or determining sensory ocular dominance strength, the system comprising: a see-through binocular device as defined in any of the preceding aspects or embodiments; a user interface for collecting user instructions during each of the N times, the user instructions representing the user's preferences for images to be viewed; a processor for processing the N user instructions to determine a sensory ocular dominance and / or to determine a sensory ocular dominance strength; Equipped with The binocular device is configured to: performing a double test in which an optical power value is introduced into a first optical module of the see-through binocular device, preferably only into the first optical module, to create a blur in an image seen by a user of the see-through binocular device, preferably through only one of the optical modules, and thereafter an optical power value is introduced into a second optical module, preferably only into the second optical module, to create a blur in the same image seen by the user, preferably through only the other optical module; The above double test is repeated N times.

[0036] In a double test, one of the two optical channels is blurred while the other preferably remains sharp. Each double test can be performed randomly or pseudo-randomly, so that the optical module that is blurred first can be the one corresponding to the left or right eye without distinction.

[0037] In certain embodiments, the number N is at least 10. This ensures a reasonable number of duplicate tests, balancing accuracy and reliability of results, user comfort, and overall duration of the test.

[0038] In certain embodiments, the introduced optical power value is between 1.0 and 2.0 D, preferably as a positive optical value.

[0039] Another aspect of the present disclosure relates to a method for determining sensory ocular dominance and / or determining sensory ocular dominance strength, the method comprising: The process of performing double testing; collecting user indications during each of the N time periods, the user indications representing the user's preferences for images viewed; Processing the N user instructions to determine a sensory ocular dominance and / or a sensory ocular dominance strength. Including, The double test is introducing an optical power value into a first optical module of the see-through binocular device, preferably only into the first optical module, to generate blur in an image viewed by a user of the see-through binocular device, preferably only through the first optical module; and thereafter introducing an optical power value into a second optical module of the see-through device, preferably only into the second optical module, to generate a blur in the same image seen by the user, preferably only through the second optical module; Repeat the above double test N times Includes:

[0040] In certain embodiments, the see-through binocular device used to determine sensory ocular dominance and / or to determine sensory ocular dominance strength is as defined in any of the foregoing aspects and / or embodiments.

[0041] The steps of the computer-implemented method for determining sensory eye dominance and / or determining sensory eye dominance strength may be performed by a processor, which may be an integral part of the binocular device or part of a separate device such as a laptop, tablet, mobile phone, etc.

[0042] The different aspects and embodiments defined above can be combined with each other as long as they are compatible with each other.

[0043] Additional advantages and features of the present disclosure will become apparent from the following detailed description and are particularly pointed out in the appended claims.

[0044] To complete the description and provide a better understanding of the present disclosure, a set of drawings are provided. The drawings form an integral part of the description and illustrate one or more embodiments, but should not be construed as limiting the scope of the disclosure, but merely as examples of how the disclosure may be practiced. The drawings include the following figures: [Brief explanation of the drawings]

[0045] [Figure 1A] Illustrated is a situation in which a user is looking through conventional binoculars at two objects, one located at a long distance and the other at an intermediate (or close) distance. [Figure 1B] 1A and 1B are schematic representations of monocular and binocular images seen by a user at long distances using conventional binoculars. [Figure 1C] 1A and 1B are schematic representations of monocular and binocular images seen by a user at close range using conventional binoculars. [Figure 2A] 1A, but using a see-through binocular device according to the present disclosure optimized for viewing objects located at intermediate distances. [Figure 2B] 1A and 1B are diagrammatic representations of monocular and binocular images seen by a user at long distances; [Figure 2C] 1A and 1B are diagrammatic representations of monocular and binocular images seen by a user at close range. [Figure 3A] 1B illustrates a similar situation to FIG. 1A using a see-through binocular device according to the present disclosure optimized for viewing objects located at close range. [Figure 3B] 1A and 1B are diagrammatic representations of monocular and binocular images seen by a user at long distances; [Figure 3C] 1A and 1B are diagrammatic representations of monocular and binocular images seen by a user at close range. [Figure 4A] 1 shows a perspective view of one embodiment of a see-through optical module for a binocular device according to the present disclosure; [Figure 4B] 4B shows a top view of the see-through optical module shown in FIG. 4A. [Figure 4C]4B shows a side view of the see-through optical module shown in FIG. 4A. [Figure 5] 10 shows a side view of another possible embodiment of the see-through optical module. [Figure 6] 10 shows a top view of a see-through binocular device according to another possible embodiment. [Figure 7] 10 shows a side view of another possible embodiment of the see-through optical module. [Figure 8] FIG. 1 is a flow diagram that generally illustrates steps of a method for assessing ocular dominance strength according to the present disclosure. [Figure 9A] 1 shows a perspective view of a possible embodiment of an accessory for attaching one or more trial lenses to a binocular device according to the present disclosure; [Figure 9B] A bottom view of FIG. 9A is shown. DETAILED DESCRIPTION OF THE INVENTION

[0046] The following description is not to be taken in a limiting sense, but is given merely for the purpose of illustrating the broad principles of the invention.Embodiments of the apparatus and method of the present disclosure will now be described by way of example with reference to the accompanying drawings, in which: FIG.

[0047] In accordance with the present disclosure, a near, intermediate, and far distance see-through binocular device 100 is presented, which further allows the user to experience different corrections for each eye. Possible embodiments of the near, intermediate, and far distance see-through binocular device 100 are represented schematically in FIG. 6 and described in detail below.

[0048] First, the observation results of the proposed see-through binocular device 100 are shown schematically in FIGS. 2A to 2C and 3A to 3C.

[0049] FIG. 2A illustrates a similar situation to FIG. 1A, i.e., a user (whose left and right eyes 11a, 11b are depicted) is presented with a scenario including a Don Quixote book 1 located in the near distance (approximately 40 cm from the user) and a windmill 2 located in the far distance (approximately 100 m from the user). The user views this scenario and the objects contained therein using a see-through binocular device 100 according to the present disclosure. The binocular device 100 has a left optical channel 110a and a right optical channel 110b. The field of view generated by the left channel 110a of the binocular device 100 is represented by striped region 112a, and the field of view generated by the right channel 110b of the binocular device 100 is represented by striped region 112b; the left field of view 112a and the right field of view 112b completely overlap at an intermediate distance, and the input optical axes of the left channel 113a and the right channel 113b intersect.

[0050] The left portion of Figure 2B shows images 2a, 2b actually perceived by a user of an object 2 (i.e., a windmill) located at a long distance through left and right channels 110a, 110b, respectively, when the binocular device is configured optimally for intermediate distances. In this case, images 2a, 2b contain slightly different perspectives of the windmill 2 (magnification x1). Because fields of view 112a and 112b overlap at long distances, the two images 2a, 2b seen by the user using binocular device 100 overlap significantly, and image 2c produced by binocular vision is schematically represented in the image on the right of Figure 2B.

[0051] Similar to FIG. 2B, the left portion of FIG. 2C shows images 1a and 1b actually perceived by a user of an object 1 (i.e., the book Don Quixote) located at close range through left and right channels 110a and 110b, respectively, when the binocular device is configured optimally for intermediate distances. Fields of view 112a and 112b overlap even at close range, and the two images 1a and 1b seen by the user using binocular device 100 also partially overlap. As a result, the user can also see the book Don Quixote 1 through binocular device 100; the user actually perceives a binocular image 1c, as schematically represented in the image on the right side of FIG. 2C, rather than two separate images.

[0052] In FIG. 3A, a see-through binocular device 100 according to the present disclosure is configured to focus on a near distance, where Don Quixote's book 2 is located. The left and right fields of view 112a and 112b completely overlap at near distances, and the input optical axes of the left and right channels 113a and 113b intersect. Similar to FIGS. 1B-1C and 2B-2C, FIGS. 3B-3C schematically represent the images actually seen by a user at near and far distances, respectively. Because the binocular device 100 is configured for optimal focusing at near distances, the left and right images 1a and 1b essentially completely overlap, producing a binocular image 1c containing the Don Quixote book. Because the left and right images 2a and 2b partially overlap, the image 2c of an object located in the far distance, i.e., a windmill, is still correctly seen by the user.

[0053] Thus, the see-through binocular device 100 presented herein fully solves the problems posed by existing solutions, including the device disclosed in US Pat. No. 6,233,999.

[0054] As a first approach, a balanced situation in which the fields of view overlap equally for near and far objects (and thus completely overlap at a certain intermediate distance, as shown in FIG. 2A ) is considered the best possible scenario. However, several years of experimentation conducted internally by the authors of the present disclosure have led them to understand that the brain does not tolerate well the separation between the fields of view that such a configuration creates for near objects, with the right field of view being more to the right and the left field of view being more to the left; this is uncomfortable and intolerable for many subjects. Instead, crossing the fields of view, i.e., displacing the right field of view further to the left and the left field of view further to the right, has proven to be well tolerated by users. Technically, this is the situation provided by blocking far vision with a closer aperture: this crossing of the fields of view is like looking through a window.

[0055] FIG. 4 shows one possible embodiment of two see-through optical modules 110a and 110b (also referred to as left and right optical channels in this example). The see-through optical modules 110a and 110b include an adjustable lens 120 and a projection system 130. The projection system 130 includes first and second lens groups 131 and 132 and six mirrors 133, 134, 135, 136, 137, and 138. The first and second lens groups 131 and 132 project the adjustable lens 120 onto the pupil plane of the user's eyes 11a and 11b. The mirrors 135 and 138 flip the image vertically, and the mirrors 136 and 137 flip the image horizontally. The combined effect of the mirrors 131, 132, 135, 136, 137, and 138 produces a non-inverted (or upright) projection. The first two mirrors in the optical path, mirrors 133 and 134, are used to obtain the same input and output optical axis.

[0056] The paths taken by the group of five rays within this embodiment of the optical module are shown schematically in Figures 4A, 4B, and 4C. The five rays are a first ray r along the optical axis and two rays r contained in the yz plane. v1 , r v2 and two rays r included in the XZ planeh1 , r h2 It can be seen that the arrangement of the five rays at the entrance of the optical module is maintained at the entrance of the ophthalmic lens and is not inverted; also, at the same angle of incidence, there is an equal magnification.

[0057] 5 shows another possible embodiment of the see-through optical module, in which the optical projection system 130 comprises first and second lens groups 131, 132 and a prism group 140, in this example a Schmidt-Péchan prism. The combined effect of the first and second lens groups 131, 132 and the prism 140 produces a non-inverted (or upright) projection 120' of the accommodative lens 120 onto the pupil plane PP of the eye 11a / 11b. The path of the input light beam is represented schematically by an arrow.

[0058] 6 shows a top view of a see-through binocular device according to another possible embodiment. The see-through binocular device 100 includes two identical see-through optical modules, each including an identical projection system 130a, 130b. Each projection system includes three lens groups 131a / 131b, 132a / 132b, and 139a / 139b that project the respective adjustable lenses 120a, 120b non-inverted onto the pupil plane of the user's respective eye 11a, 11b.

[0059] FIG. 6 shows a binocular device having two optical channels. The embodiment shown in FIGS. 4 and 5 only represents one of the optical channels. Any combination of the optical channels shown in the embodiments of FIGS. 4, 5, and 6 can be used to obtain a binocular device similar to that described with reference to FIG. 6 by arranging the two optical channels side by side. One optical channel is for the left eye 11a, and the second optical channel is for the right eye 11b. The two optical channels should be arranged so that the input axes of the two see-through optical modules intersect at a plane corresponding to the near distance; this allows the fields of view to completely or almost completely overlap when viewing objects located at a near distance.

[0060] Furthermore, the two optical channels should be positioned with an adjustable distance between them to match the user's eyes in order to match the user's interpupillary distance.

[0061] 7 is a side view of another possible embodiment of a see-through optical device including the following components: an adjustable lens 120, three lens groups 131, 132, and 139, and four mirrors M1, M2, M3, and M4. These components are arranged so that, when the binocular device is in use, a first distance DOTL between the pupil plane PP onto which the adjustable lens 120 is projected 120′ and the observed object 1 is equal to a second distance DOP traveled by light coming from the observed object 1 before reaching the adjustable lens 120. As with the previous embodiment, this is achieved by inserting a mirror 131 upstream of the adjustable lens 120 so that the adjustable lens 120 is not located in front of the eyes 11a / 11b. Any of the previous embodiments can be modified to achieve this configuration.

[0062] FIG. 8 shows a schematic flow diagram of a method for determining a person's perceived eye dominance strength using a see-through binocular device 100 as described in any of the previous embodiments.

[0063] According to the proposed method, the see-through binocular device 100 is configured to randomly present two test conditions to the user. The first condition—Condition Test A—means that the user of the see-through binocular device 100 has no blur in the right eye and positive blur, e.g., 1.5 diopters, in the left eye. The second condition—Condition Test B—means that the left eye has no blur and positive blur, e.g., 1.5 diopters, is introduced in the right eye. The user of the binocular device 100 is provided with a means to indicate their preference between the first and second conditions during this first two-condition test #1, and this indication of preference is registered as R1. This means for inputting the user's preference can be implemented by an application with a user interface; alternatively, the user's preference can be collected by pressing left and right push buttons. The two condition tests are repeated at a second time #2, during which the first and second condition tests are randomly presented to the user, and the user again indicates their preference, which is registered as R2. The text is repeated N times, and the user's preferences are collected every N times. After processing the user's N preference submissions, R1, R2, ...RN, the dominance strength of that user's eye is evaluated.

[0064] For example, if the left eye prefers the blur-free condition in 8 out of 10 trials, the user has a left eye dominance of 80% strength. Eye dominance strength is calculated as NL / NT or NR / NT (depending on the eye), where NL is the number of times the subject prefers the left eye, NR is the number of times the subject prefers the right eye, and NT is the total number of trials.

[0065] 9A shows possible embodiments of accessories 200a, 200b for mounting one or more trial lenses 300 on the binocular device 100. In fact, FIG. 9A shows two embodiments of the accessories: one accessory 200a for mounting on the left channel of the binocular device 100 and another accessory 200b for mounting on the right channel of the binocular device 100. Each accessory 200a, 200b comprises an arm 210 having two ends, a first distal end having a support 211 similar to that of an ophthalmoscope for supporting one or more trial lenses 300, and a second proximal end having a set of magnets 212 (three magnets 212 in the embodiment shown).

[0066] One or more trial lenses 300 can be placed on each support to correct refractive errors (spherical and astigmatism), as well as for other purposes (e.g., introducing trial lenses to obtain a defocus curve). Magnet sets 212 allow each accessory 200a, 200b to be easily and removably attached to the corresponding projector optics 100 where the corresponding set of three magnets 150 is located (see FIG. 9B).

[0067] Magnet sets 212, 150 are positioned such that the trial lens 300 is centered relative to the input optical axis of each optical channel when the accessory is attached to binocular device 100. Furthermore, when the interpupillary distance is adjusted in binocular device 100, magnet set 150 is positioned to maintain the alignment of any trial lens 300 that is ultimately attached to either accessory 200a, 200b.

[0068] The present disclosure is obviously not limited to the particular embodiments described herein, but also encompasses any variations (e.g., with regard to selection of materials, dimensions, components, configurations, etc.) that may be considered by one skilled in the art within the general scope of the present disclosure as defined in the claims.

[0069] In this specification, the terms "comprises," "includes," and derivatives thereof (e.g., "including," "comprises," etc.) should not be understood in an exclusive sense, i.e., these terms should not be interpreted as excluding the possibility that what is being described and defined may include additional components, steps, etc.

Claims

1. A see-through binocular device (100) for any distance, wherein the binocular device (100) Two see-through optical modules (110a, 110b), each of which is configured to project an image (1a, 1b, 1c; 2a, 2b, 2c) of an object (1, 2) onto a first plane without inversion. Each see-through optical module is equipped with i. Optical element (120) having variable optical power; and ii. An optical projection system (130) configured to project the optical element (120) having the variable optical power onto a second plane (120'); Equipped with, The input optical axes (113a, 113b) of the two see-through optical modules (110a, 110b) intersect in a plane corresponding to near distance, and the fields of view (112a, 112b) completely or nearly completely overlap to view objects located at close range. A see-through binocular device (100) characterized by the above.

2. The see-through binocular device (100) according to claim 1, characterized in that each optical element (120) having variable optical power is configured to set the focus for observation at any distance.

3. The see-through binocular device (100) according to claim 1, characterized in that the optical element (120) having variable optical power is configured to generate multifocal simultaneous viewing by time multiplexing.

4. The see-through binocular device (100) according to claim 1, wherein each projection system (130) includes at least first and second lens groups (131, 132) having equal focal lengths F, the first and second lens groups (131, 132) being similar, preferably identical but oriented in opposite directions, the first lens group (131) being positioned at a distance F from the main surface of the optical element (120) having variable optical power, and the main surface of the second lens group (132) being positioned at a distance 2F from the main surface of the first lens group (131).

5. The see-through binocular device (100) according to claim 4, wherein each projection system (130) further comprises at least four mirrors (133, 134, 135, 136, 137, 138) for reversing the inversion introduced by the first and second lens groups (131, 132).

6. The see-through binocular device (100) according to claim 4, characterized in that each projection system (130) includes a prism or a group of prisms (140).

7. The see-through binocular device (100) according to claim 1, further comprising means for moving the refractive range of the binocular device by including an additional offset lens positioned next to the optical element (120) having variable optical power, or by changing the distance between the first and second lens groups (131, 132).

8. The see-through binocular device (100) according to claim 1, characterized in that each projection system (130) may include at least one block of a free-form optical system.

9. The see-through binocular device (100) according to claim 1, wherein each see-through optical module (110a, 110b) comprises at least a mirror (M1), and a first distance (DOTL) between the second plane (120') and a specific position (1) is equal to a second distance (DOP) corresponding to the distance that light arriving from the specific position (1) travels to the main surface of the optical element (120) having variable optical power after being reflected by the mirror (M1).

10. The see-through binocular device (100) according to claim 1, characterized by including a mechanism for adjusting the interpupillary distance.

11. A method for projecting an object located at an arbitrary distance without inverting it, A step of projecting objects (1, 2) onto a first plane without inversion using a first see-through optical module (110a) having an optical element (120) having variable optical power, wherein the projection step includes the step of projecting the optical element (120) having variable optical power onto a second plane (PP); A step of projecting the objects (1, 2) onto the first plane without inversion using a second see-through optical module (110b) having the optical element (120) having the variable optical power, wherein the projection step includes the step of projecting the optical element (120) having the variable optical power onto the second plane. Includes, The above method further, The process of arranging the input optical axes (113a, 113b) of the two see-through optical modules (110a, 110b) to intersect in a plane corresponding to short distance. Methods that include...

12. A see-through binocular device (100) according to any one of claims 1 to 10; and Accessories (200a, 200b) for supporting one or more trial lenses (300) Equipped with, The accessories (200a, 200b) and the see-through binocular device (100) include mounting means (212, 150) for attaching them to each other. A see-through binocular system characterized by the following features.

13. A system for determining the dominance of sensory vision and / or the intensity of sensory vision dominance, A see-through binocular device (100) according to any one of claims 1 to 10; A user interface for collecting user instructions during each of N time intervals, wherein the user instructions represent the user's preferences for images to be viewed; A processor for processing instructions from N users to determine sensory-eye dominance and / or sensory-eye dominance strength. Equipped with, The see-through binocular device (100) is configured to perform the following: A double test is performed by introducing an optical power value into the first optical module (110a, 110b) of the see-through binocular device (100) to generate a blur in the image seen by the user of the see-through binocular device (100) through one of the optical modules (110a, 110b), and then introducing an optical power value into the second optical module (110a, 110b) to generate a blur in the same image seen by the user through the other optical module (110a, 110b); Repeat the above double test N times. system.

14. A method for determining the dominance of the sensory eye and / or the intensity of the sensory eye dominance, The process of performing double testing; A process of collecting user instructions during each of N time intervals, wherein the user instructions represent the user's preference for images to be viewed; A process of processing instructions from N users to determine sensory-eye dominance and / or the intensity of sensory-eye dominance. Includes, The aforementioned double test is, A step of introducing an optical power value into the first optical module of a see-through binocular device to generate blur in the image seen by the user of the see-through binocular device through the first optical module, and Subsequently, the optical power value is introduced into the second optical module of the see-through device to generate a blur through the second optical module on the same image viewed by the user. The process involves repeating the above double test N times. including method.

15. The method according to claim 14, characterized in that each double test is performed randomly or pseudo-randomly.

16. The aforementioned see-through binocular device is for any distance, and the binocular device is Two see-through optical modules (110a, 110b), each of which is configured to project an image (1a, 1b, 1c; 2a, 2b, 2c) of an object (1, 2) onto a first plane without inversion. Each see-through optical module is equipped with i. Optical element (120) having variable optical power; and ii. An optical projection system (130) configured to project the optical element (120) having the variable optical power onto a second plane (120'); Equipped with, The input optical axes (113a, 113b) of the two see-through optical modules (110a, 110b) intersect in a plane corresponding to near distance, and the fields of view (112a, 112b) completely or nearly completely overlap to view objects located at close range. The method according to claim 14 or 15, characterized in that

17. The system according to claim 13, characterized in that each double test is performed randomly or pseudo-randomly.

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