Peep sight eyepiece with continuously adjustable aperture, multi-angle housing and modular diaphragm

Abstract

Adjustable aperture unit for a tendon eyepiece (peep sight), comprising (a) a one-piece sleeve (1) with essentially axial slots (4) near the outer edge, wherein a circumferential root rib remains unslotted on the outer circumference and self-supporting lamellar sections (3) are formed on the inside, and (b) a support surface (7) which, when approaching the sleeve (1) in relative terms, elastically supports the lamella sections (3) inwards, characterized in that the lamella sections (3) overlap in a scale-like manner over a substantial part of their length, the overlap path being not limited by the slot width, so that a significantly larger stepless adjustment range of the aperture opening (5) for light regulation is created.

Description

Technical field

[0001] The invention relates to peep sights for bows. It includes continuously adjustable apertures for light regulation, as well as housing and optical modules that can be adapted to different bowstring angles, draw lengths, sight diameters, and lighting conditions. Furthermore, perceptual physiological effects (vernier / edge hyperacusism) are specifically utilized for rapid centering of the sight. Background / State of the art

[0002] In sight / diopter technology, iris diaphragms with multiple individual blades are known, the opening of which is changed via rotational actuation; the blades are typically mounted on carrier rings or pins. In archery practice, string eyepieces (peep sights) with a fixed or only narrowly variable aperture range are known; variable systems are often modular in design and divided into many housing angle variants. With blade-based diaphragms featuring radially central slots, the adjustment range is structurally limited by the slot width, resulting in narrow adjustment ranges. Furthermore, such diaphragms tend to shift, develop play, and be damaged under the dynamics typical of archery (rapid acceleration / stopping of the string). Systems with a variable aperture range are often complex assemblies that can be damaged by improper handling and pose a danger to the user.Counter-apertures with permanently installed color filters are known, as are versions with individual shots for lenses. Object of the invention

[0003] The aim is to provide a lightweight, robust tendon eyepiece system that allows stepless aperture adjustment for light regulation under changing conditions and covers the largest possible adjustment range. - is stable against typical dynamic loads and minimizes the risk of individual blade damage, - is technically secured in such a way that individual parts cannot come loose due to improper handling, - with a housing that covers practically relevant string angles, so that the aperture appears circular to the shooter, - and provides a modular multi-optical mount (lenses / filters) in a compact design. Summary of the invention

[0004] The core is a one-piece, peripherally slotted sleeve (louver basket 1) with a circumferential outer root rib and internally cantilevered louver sections (3). An axially positioned actuating surface (7) of an adjusting body (6) – conical, cylindrical, or radially curved – elastically bends the louvers inwards. In preferred embodiments, the louvers overlap like scales over a substantial portion of their length; the overlap is not limited by the slot width, resulting in a significantly larger stepless adjustment range of the aperture opening (5) for light regulation. The variably finely microstructured inner edge of the aperture opening (5) ensures clear contrast with the target image. A retaining element (e.g., friction thread 10) and an anti-rotation device (snap action / undercut 11) secure the setting; a one-way detent fixes the louver basket in the actuating element.

[0005] The multi-angle housing (13) comprises at least three, preferably four, non-intersecting angular positions with chord grooves (14) whose edges are rounded. The groove arrangement and outer contour create a clearance corridor (K) in each angular position: The chord does not touch either the actuating element or the counter-aperture (16) and does not cause any shading of the aperture / optics.

[0006] The counter-diaphragm (16) has a lens cavity (17) for at least one, preferably two, lenses (21) and a filter cavity (18) separate from the lens cavity for receiving an interchangeable color filter (20). In one embodiment, to replace the color filter (20), the lens or lenses (21) held in the lens cavity (17) are temporarily removed and then reinserted. In another embodiment, the filter cavity (18) has a threaded seat, so that the color filter (20) can be replaced in a screw-in filter cassette without removing the lens or lenses (21). In other embodiments, the lens cavity (17) and / or the filter cavity (18) can be removed from one side. Advantages and technical effects

[0007] Target image and vernier / edge hyperacusivity. The visual system detects minimal edge displacements well below normal angular resolution (vernier / hyperacusivity). A finely periodic microstructured inner edge of the aperture provides stable edge indications: Even small decenterings appear as a visible phase shift relative to the ring of the aiming optic (outer aiming optic ring). This enables faster, repeatable centering with reduced search movements. Micro-tilt angles of the structure refract specular reflections (glare) and reduce stray light; the amplitude remains small, so the aperture is perceived as circular.

[0008] Wide adjustment range. The scale-like overlap over a portion of the length decouples the adjustment path from the slot width. The result is a wide, stepless adjustment range in a compact design; the edge remains mechanically guided even with small openings.

[0009] Setting stability and safety. A defined frictional torque holds the setting against operational fluctuations; a locking mechanism (snap / undercut) ensures self-alignment and prevents loosening. The one-way locking mechanism in an annular locking groove cannot be released without damage in the field.

[0010] Multi-angle housing. String angles vary more widely than two fixed angles depending on the bow model, draw length, anchor technique, and string construction; at least three, preferably four, angular positions cover the majority of archers, so that the aperture appears circular (elliptical images cannot be reliably conveyed with the scope). String grooves, circumferential offset, and outer contour always ensure clear movement and no vignetting.

[0011] Optical module. The coaxial lens cavity minimizes aberrations. The filter cavity, separate from the lens cavity, allows for the replacement of the color filter. Simultaneous installation of a clarifier and / or verifier lens is possible. Retention principles include tilting and / or at least one O-ring; in one embodiment, a screw-in filter cassette may be provided.

[0012] Materials / Tribology. The lamellar basket consists of an elastically deformable material with permanently repeatable resilience; friction pairings are designed for a defined frictional torque and low wear tendency.

[0013] Manufacturing / Assembly. Peripheral axial slotting at the outer root web creates self-supporting lamellae on the inside; forming / setting (optionally thermal) can create a load-bearing shell even in the resting state. The one-way locking mechanism is selectively activated during the assembly step.

[0014] Fatigue strength. The architecture withstands cyclic dynamic loads (acceleration / stopping of the chord, lateral excitations) without misalignment or lamella breakout; the scale-like covering forms a self-supporting structure in narrow apertures.

[0015] Economy / Ecology. A multi-angle housing with a continuously adjustable aperture replaces many variants. This reduces storage and distribution costs, avoids incorrect purchases, and lowers material consumption and waste while simultaneously allowing adaptation to configuration changes. Detailed description - examples of implementation

[0016] Louver basket and support surface. The louver basket (1) is a single piece; essentially axial slots (4) near the outer edge divide the sleeve into internally cantilevered louver sections (3), while a circumferential root rib remains unslotted at the outer circumference. A support surface (7) – conical, cylindrical, or radially curved – is positioned axially relative to the louver basket and elastically bends the louvers inwards; the support surface can be part of an adjusting element (6). In preferred embodiments, the louvers overlap over a substantial length; the overlap is not limited by the slot width.

[0017] Inner edge microstructure. The inner circumferential edge of the aperture opening (5) can be designed as a fine-periodic microstructure (e.g., sinusoidal / wave-shaped or as a fine sequence of facets) with a low amplitude relative to the opening and multiple periodicities around the circumference. The number of periods can conveniently be equal to or a multiple of the number of blades to create a phase-locked reference. A matte / scattering surface reduces glare and stray light. Alternatively, the inner edge can be made nearly smooth.

[0018] Further embodiments. In further embodiments, the aperture opening (5) is not formed by adjustable louvers (3), but by an aperture insert that is interchangeably arranged in the housing body (13) and / or in the counter-aperture (16). Alternatively, the aperture opening (5) can be fixed in the housing body (13). The inner edge of the aperture opening (5) can also be faceted and / or finely periodically faceted.

[0019] Safety and locking module. An actuating / knurled ring (8) engages via a frictional thread (10) and adjusts the aperture. The frictional torque is calibrated so that operational vibrations do not overcome the position. A locking device with snap action and relief groove (11) ensures self-alignment and prevents loosening. A circumferential collar (2) of the lamella basket is positively engaged; a locking plate (12) engages in an annular locking groove (9) and forms a one-way connection that cannot be disassembled without damage in the field.

[0020] Multi-angle housing with clearance. The housing body (13) has at least three, preferably four, non-intersecting angular positions with chord grooves (14). Circumferentially offset chord grooves and the outer contour with local recesses / flattening and / or axial offset relative to the knurled ring / counter aperture create a clearance corridor (K) in each angular position: The chord does not touch either the actuating element or the counter aperture (16) and does not shading of either the aperture or the optics. Rounded edges minimize fiber stress.

[0021] Counter-diaphragm – optical integration. The counter-diaphragm (16) has a lens cavity (17) for receiving at least one, preferably two, lenses (21) coaxial to the axis (A), and a filter cavity (18) separate from the lens cavity for receiving an interchangeable color filter (20). In one embodiment, to replace the color filter (20), the lens or lenses (21) held in the lens cavity (17) are temporarily removed and then reinserted. In another embodiment, the filter cavity (18) has a threaded seat, so that the color filter (20) can be replaced in a screw-in filter cassette without removing the lens or lenses (21). The filter cavity is held in place by a tilting design and / or at least one O-ring (19). Axially stepped seating areas of the lens cavity ensure a defined relative position of the lenses and minimize aberrations in a compact design. Explanation of the figures

[0022] An embodiment of the invention is described by reference to the Fig. Sections 1 to 8c are explained. They show: Fig. 1. An exploded view of the structure; Fig. 2 a section / detail of the actuating ring; Fig. 3. a cut through the adjusting body; Fig. 4 two target images with different aperture settings; Fig. 5 views of the housing body; Fig. 6a to 6d different angular positions of the mounted tendon eyepiece showing a free-walking corridor; Fig. 7 an exploded view of an optical module in the counter aperture; Fig. Figures 8a to 8c show schematic representations of different aperture configurations.

[0023] In Fig. Figure 1 shows the lamellar basket (1) with circumferential flange (2), lamellae (3), and essentially axial slots (4) near the outer edge, the aperture opening being defined by their inner edge (5). In the exemplary embodiment, the lamellar basket (1) is guided against rotation by an anti-rotation device (15), which consists of a locating lug on the adjusting body (6) and a corresponding receptacle on the housing body (13). The adjusting body (6) also has a friction torque thread (10) and a relief groove as an anti-rotation device (11) and can be actuated via an actuating ring (8). A locking plate (12) can be provided for one-way locking. The housing body (13) has chord grooves (14). The observation axis is designated A.

[0024] Fig. Figure 2 shows the actuating ring (8) with an annular locking groove (9).

[0025] Fig. Figure 3 shows the adjusting body (6) in section, in which a positioning surface (7) is formed for adjusting the aperture opening; furthermore, the friction torque thread (10), the undercut (11) and the locating lug of the anti-rotation device (15) are visible.

[0026] Fig. Figure 4 shows two target images in which the lamellae (3), the slots (4) and the aperture opening (5) are shown in different adjustment positions.

[0027] Fig. Figure 5 shows the housing body (13) in several views, in particular with the chord grooves (14) and the receptacle as part of the anti-rotation device (15).

[0028] Fig. Figures 6a to 6d show the mounted tendon eyepiece on the tendon, with the housing body (13), the tendon grooves (14), the actuating ring (8) and a counter-diaphragm (16) visible; the free passage corridor is labelled K.

[0029] Fig. Figure 7 shows an exploded view of an optical module in / at the counter-aperture (16) with a lens cavity (17), a filter cavity (18), an O-ring as a retaining means (19), a color filter (20) and a lens (21).

[0030] Fig. Figures 8a to 8c schematically show different forms of the aperture opening (5), in particular a faceted inner edge, a finely periodic faceted inner edge and an almost smooth inner edge. Reference symbol list 1 louver basket (sleeve) 2 bundles (circumference bundle on the basket) 3 slats 4 slots (near the outer edge, essentially axial) 5 Aperture opening (inner edge of the aperture) 6 adjusting elements 7 Mounting surface (conical / cylindrical / curved) 8 knurled / actuating ring 9 locking groove (ring-shaped) 10 Friction torque threads 11. Free-cut (twist protection) 12 Locking plate (one-way latch) 13 Housing bodies 14 chord grooves (non-cutting; provided for each angular position) 15 Anti-rotation device (fitting lug on the adjusting body (6) and corresponding receptacle on the housing body (13); for the anti-rotational mounting of the lamella basket (1)) 16 Shadecap 17 Lens cavity 18 filter cavities 19 O-ring (retaining element) 20 color filter plates 21 Lens (e.g. distortion / correction lens) A axis (observation axis) K Free-range corridor

Claims

[1] Adjustable aperture unit for a tendon eyepiece (peep sight), comprising (a) a one-piece sleeve (1) with essentially axial slots (4) near the outer edge, wherein a circumferential root rib remains unslotted on the outer circumference and self-supporting lamellar sections (3) are formed on the inside, and (b) a support surface (7) which, when approaching the sleeve (1) in relative terms, elastically supports the lamellar sections (3) inwards, characterized by , that the lamella sections (3) overlap in a scale-like manner over a substantial part of their length, whereby the overlap path is not limited by the slot width, so that a significantly larger stepless adjustment range of the aperture opening (5) for light regulation is created. [2] Unit according to claim 1, characterized by , that the mounting surface (7) is conical. [3] Unit according to claim 1, characterized by, that the support surface (7) is cylindrical or partially cylindrical. [4] Unit according to claim 1, characterized by , that the support surface (7) is radially curved. [5] Unit according to any one of claims 1 to 4, characterized by , that the relative approach of the support surface (7) to the sleeve (1) can be effected by rotation and / or translation and / or a cam, wedge or eccentric guide. [6] Unit according to any one of claims 1 to 5, characterized by , that the inner edge of the aperture opening (5) is formed as a faceted and / or finely periodic faceted microstructure with low amplitude and multiple periodicity over the circumference, so that Vernier references are provided for the visual system. [7] Unit according to claim 6, characterized by that the number of periods is equal to or a multiple of the number of lamellae. [8] Unit according to claim 6 or 7, characterized bythat the inner edge has a matte or scattered surface finish. [9] Unit according to any one of claims 1 to 8, characterized by , that the lamella sections (3) are pre-bent and / or set so that a circumferential support shell is created without actuation. [10] Unit according to any one of claims 1 to 9, characterized by , that a means is provided for maintaining the set aperture position against normal operating loads. [11] Unit according to claim 10, characterized by , that the means for holding the position includes a frictional torque thread (10). [12] Unit according to any one of claims 1 to 11, characterized by , that a twist-off safety device with snap action and undercut (11) is provided. [13] Unit according to any one of claims 1 to 12, characterized by, that a circumferential collar (2) of the sleeve (1) and a locking plate (12) are provided which lock the collar (2) in an annular locking groove (9), wherein the locking cannot be released without destruction. [14] Unit according to any one of claims 1 to 13, characterized by that the sleeve (1) is made of an elastically deformable material with permanently repeatable resilience. [15] Adjustable aperture unit for a peep sight, comprising a one-piece, peripherally slotted sleeve (1) with circumferential outer root rib and internally cantilevered lamellar sections (3) and a support surface (7) such that, upon relative approach, the lamellar sections (3) are elastically deformed inwards and the inner edge forms an optical aperture opening (5), wherein the lamellar sections (3) are an integral part of the sleeve (1). [16] Unit according to claim 15, characterized bythat the unit is free of individual pivot or bearing pins. [17] Unit according to claim 15 or 16, characterized by that the support surface (7) is conical, cylindrical or radially curved. [18] Unit according to any one of claims 15 to 17, characterized by that the relative approximation can be achieved by rotation and / or translation and / or a curve, wedge or eccentric guide. [19] Unit according to any one of claims 15 to 18, characterized by , that the unit is designed for installation in a housing (13) of a chord eyepiece. [20] Unit according to claim 19, characterized by , that the housing (13) has at least three, preferably four angular positions for receiving on a chord. [21] Unit according to claim 20, characterized by , that in every angular position there is a free passage corridor (K) in which the tendon does not touch either the actuating element or the counter-aperture and no shading of the aperture / optics occurs. [22] Unit according to any one of claims 15 to 21, characterized by , that a means is provided for maintaining the set aperture position against normal operating loads. [23] Unit according to any one of claims 15 to 22, characterized by , that the inner edge of the aperture opening (5) is formed as a faceted and / or finely periodic faceted microstructure with low amplitude and multiple periodicity over the circumference. [24] Unit according to claim 23, characterized by that the number of periods is equal to or a multiple of the number of lamellae, and / or that the inner edge has a matte or scattering surface finish. [25] Closure module for a tendon eyepiece aperture unit comprising a knurled / actuating ring (8) with an inner receiving contour for a circumferential collar (2), an annular locking groove (9) and a closure plate (12) which is engaged in the locking groove (9) and thereby forms a one-way connection, wherein the engagement cannot be released without damage. [26] Locking module for a tendon eyepiece aperture unit, comprising a twist-off locking device with snap action and relief groove (11) for self-alignment and to prevent unintentional loosening of an actuating ring (8) relative to an adjusting body (6) and / or relative to a lamellar basket (1). [27] Housing (13) for a tendon eyepiece (English: peep sight), comprising a through-hole along an axis (A) and at least three, preferably four, angular positions for mounting on a tendon, characterized by, that in each angular position chord grooves (14) are provided which do not intersect each other, are separated by webs and are rounded / softened at the edges. [28] Housing according to claim 27, characterized by , that the tendon groove arrangement and housing outer contour are designed such that in every angular position there is a free passage corridor (K) in which the tendon does not touch either the actuating element or the counter-stop. [29] Housing according to claim 27 or 28, characterized by that no shading of the aperture / optics occurs in any angular position. [30] Housing according to any one of claims 27 to 29, characterized by , that the chord grooves (14) are circumferentially offset and the outer contour has recesses / flattening and / or an axial offset relative to the actuating element / counterplate to provide the clearance corridor (K). [31] Housing according to any one of claims 27 to 30, characterized by, that a rotationally secured receptacle (15) is provided for an aperture unit according to one of claims 1 to 24. [32] Housing according to any one of claims 27 to 31, characterized by , that the housing body (13) can be clamped and fixed between the actuating element and the counter plate. [33] Tendon eyepiece system comprising an aperture unit according to any one of claims 1 to 24, a housing according to any one of claims 27 to 32 and a counter-diaphragm (16). [34] Opposite aperture (16) for a peep sight eyepiece, comprising (a) a lens cavity (17) designed to accommodate at least one, preferably two, optical lenses (21) coaxial to the observation axis (A), and (b) a filter cavity (18) separate from the lens cavity (17) for receiving an interchangeable color filter (20), characterized by , that the color filter (20) is held in the filter cavity (18) and can be removed for replacement. [35] Counter-shutter according to claim 34, characterized by , that the lens or lenses (21) are held in a removable manner. [36] Counter-shutter according to claim 34 or 35, characterized by , that to replace the color filter (20) the lens or lenses (21) are temporarily removed and then reinserted. [37] Counter-shutter according to one of claims 34 to 36, characterized by , that the filter cavity (18) has a threaded seat, so that the color filter (20) can be replaced in a screw-in filter cassette without removing the lens or lenses (21). [38] Lamellar basket as a component for an aperture unit according to one of claims 1 to 24, characterized by outer edge-near, essentially axial slots (4) with circumferential outer root web as well as internally self-supporting lamellar sections (3) which are elastically deformable inwards when approaching a support surface (7) in relative proximity. [39] Lamellar basket according to claim 38, characterized by, that the lamella sections (3) are pre-bent and / or set to form a circumferential support shell. [40] Aperture insert for a tendon eyepiece (English: peep sight), with an aperture opening (5), characterized by , that the inner edge of the aperture opening (5) is formed as a faceted and / or finely periodic faceted microstructure with low amplitude and multiple periodicity over the circumference. [41] Aperture insert according to claim 40, characterized by , that the aperture insert is designed for reception in a housing (13) and / or in a counter-stop (16). [42] Housing according to any one of claims 27 to 32, characterized by , that an aperture opening (5) is formed firmly in the housing body (13) and that the inner edge of the aperture opening (5) is formed as a faceted and / or finely periodic faceted microstructure.

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