A reticle assembly

Abstract

The application belongs to the technical field of optical instruments, and provides a reticle assembly, which comprises a glass substrate and a first light source arranged at the outer peripheral edge of the glass substrate, and the surface of the glass substrate is provided with a light-transmitting reflection groove, light emitted by the first light source is incident on the light-transmitting reflection groove, the light-transmitting reflection groove comprises a first groove wall as a division center and a light-transmitting light path enclosed by the first groove wall, a second groove wall, a third groove wall and a fourth groove wall, the light emitted from the first light source is irradiated on the division center along the light-transmitting light path, and the division center reflects the light to the human eye.

Description

Technical Field

[0001] This invention belongs to the field of optical instrument technology, and particularly relates to a reticle assembly. Background Technology

[0002] Existing telescopic optical instruments typically feature a reticle with crosshairs for aiming or positioning. These crosshairs can be broadly categorized into two types: wire-type and glass-substrate-type. Glass-substrate reticles are usually created by etching the reticle pattern onto a glass substrate. Then, chromium and materials (such as titanium dioxide and sodium silicate) used to reflect light emitted from LEDs at the substrate's edge to the user's eye are deposited onto the reticle pattern using a vapor deposition chamber. This makes the reticle appear luminous, making it easier to see in low-light conditions. However, when the light emitted from the LEDs at the substrate's edge travels through the substrate's interior, only a portion reaches the reticle and impacts the reflective material deposited there. This results in low light efficiency, making the reticle center less visible in bright light, which is extremely detrimental to rapid aiming and thus affects the user's aiming efficiency. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a reticle assembly with high light energy utilization and a reticle center that remains conspicuous in strong light environment.

[0004] The present invention is implemented as follows: a reticle assembly includes a glass substrate and a first light source disposed on the outer peripheral edge of the glass substrate. A light-transmitting reflective groove is provided on any surface of the glass substrate. Light emitted from the first light source is incident on the light-transmitting reflective groove. The light-transmitting reflective groove includes a first groove wall, a second groove wall, a third groove wall, and a fourth groove wall. The first groove wall is a reflective surface and its axial projection is the reticle center of the reticle assembly. The second groove wall intersects with the first groove wall inside the glass substrate to form a groove bottom. The third groove wall, the fourth groove wall, the first groove wall, and the second groove wall together form a light-transmitting optical path. Light emitted from the first light source irradiates the first groove wall along the light-transmitting optical path, and the first groove wall reflects the light to the human eye.

[0005] In one optional embodiment, the width of the light-transmitting reflective groove is 40 μm and the depth is 20 μm. The axial projection center of the first groove wall coincides with the geometric center of the glass substrate, and the shape of the dividing center is one of a dot, a cross, a triangle, or a rectangle.

[0006] In one alternative embodiment, the second groove wall is parallel to the surface of the glass substrate, and the second groove wall starts from the edge of the glass substrate and extends radially to the bottom of the groove, while the first groove wall is inclined to the surface of the glass substrate.

[0007] In an alternative embodiment, both the first groove wall and the second groove wall are inclined to the surface of the glass substrate.

[0008] In one optional embodiment, the first light source is a laser, which is disposed below the light path, and the light emission direction of the first light source is parallel to the second groove wall; or, the first light source is an RCLED, which is disposed below the light path, and a condenser lens with positive optical power is also provided between the first light source and the light path, and the light emission direction of the first light source is parallel to the second groove wall.

[0009] In one optional embodiment, the first light source is a laser, and a reflector is provided below the light-transmitting optical path. The first light source is located at the outer peripheral edge of the glass substrate and on one side of the reflector. The light emitted from the first light source is reflected by the reflector and enters the light-transmitting optical path, illuminating the first groove wall. The reflector is either a 45° reflecting prism or a plane mirror. Alternatively, the first light source is an RCLED, and a reflector is provided below the light-transmitting optical path. A condenser lens with positive optical power is provided between the first light source and the reflector. The first light source is located at the outer peripheral edge of the glass substrate and on one side of the reflector. The light emitted from the first light source passes through the condenser lens and is reflected by the reflector to the light-transmitting optical path, illuminating the first groove wall. The reflector is either a 45° reflecting prism or a plane mirror.

[0010] In one optional embodiment, the first light source is a laser, which is obliquely disposed in front of the glass substrate having the light-transmitting reflective groove surface. The light emitted from the first light source is incident on the light-transmitting optical path and illuminates the first groove wall. Alternatively, the first light source is an RCLED, which is obliquely disposed in front of the glass substrate having the light-transmitting reflective groove surface. A condensing lens is also provided between the first light source and the light-transmitting optical path. The light emitted from the first light source passes through the condensing lens and then enters the light-transmitting optical path and illuminates the first groove wall.

[0011] In one optional embodiment, the first light source is a laser, and the first light source is disposed in front of the surface of the glass substrate having the light-transmitting reflective groove. A reflector is also disposed between the first light source and the glass substrate. The light emitted from the first light source is reflected by the reflector to the light-transmitting optical path and illuminates the wall of the first groove. The reflector is either a 45° reflecting prism or a plane mirror. Alternatively, the first light source is an RCLED, and the first light source is disposed in front of the surface of the glass substrate having the light-transmitting reflective groove. A condensing lens with positive optical power and a reflector are disposed sequentially between the first light source and the glass substrate. The light passes through the condensing lens and the reflector sequentially, enters the light-transmitting optical path, and illuminates the wall of the first groove. The reflector is either a 45° reflecting prism or a plane mirror.

[0012] In an optional embodiment, the surface of the glass substrate having the light-reflecting groove is further provided with a reticle pattern, the reticle pattern including an illumination pattern and a horizontal reference line coated with a metal film, the illumination pattern and the horizontal reference line being respectively arranged around the axial projection center of the first groove wall, the glass substrate also having a second light source for illuminating the reticle pattern at an edge spaced from the first light source, the first light source emitting a different color than the second light source, and the illumination pattern being deposited with a material for reflecting the light emitted from the second light source.

[0013] The technical advantages of this invention compared to existing technologies are as follows: Existing glass substrate reticles typically have a light source at the edge of the glass substrate to illuminate the reticle pattern, which is coated with reflective materials such as titanium dioxide or sodium silicate, making the reticle appear luminous and easier to see in low-light conditions. However, when the light emitted from the light source at the edge of the glass substrate passes through the interior of the glass substrate, only a portion of the light reaches the reticle pattern and impacts the reflective material deposited on it. This results in low light energy utilization, making the reticle pattern, especially the center, less distinct and less conspicuous in strong light conditions, which is extremely detrimental to the user's ability to aim quickly and thus affects the user's aiming efficiency. Therefore, the present invention provides a reticle assembly, which, compared with the prior art, includes a glass substrate and a first light source disposed on the outer peripheral edge of the glass substrate. A light-transmitting reflective groove is disposed on the surface of the glass substrate. The first wall of the light-transmitting reflective groove is a reflective surface, and its axial projection is the reticle center of the reticle assembly. A second wall intersects with the first wall inside the glass substrate to form a groove bottom. A third and fourth wall, together with the first and second walls, form a light-transmitting optical path. Light emitted from the first light source disposed on the outer peripheral edge of the glass substrate is incident parallel to the second wall into the light-transmitting optical path and illuminates the first wall. The first wall reflects the light to the target, thereby forming a bright reticle center in a strong light environment. The surface of the glass substrate with the light-transmitting reflective groove is also provided with a reticle pattern, including an illumination pattern. The reticle and the horizontal reference line coated with a metal film are respectively set around the orthographic projection center of the first groove wall. The glass substrate is also provided with a second light source for illuminating the reticle pattern at the edge of the first light source. The first light source emits a different color than the second light source. The illumination pattern is deposited with a material for reflecting the light emitted by the second light source. Since the first light source for illuminating the reticle center emits a beam with a small divergence angle, and this beam directly illuminates the reticle center without passing through the glass medium, the light energy utilization of the first light source is maximized, thereby obtaining a bright reticle center. Furthermore, since the reticle center and the reticle pattern display different colors, the position of the reticle center appears more conspicuous, which is extremely helpful for users to quickly find the position of the reticle center, thereby improving the user's aiming efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the reticle assembly.

[0016] Figure 2 yes Figure 1The enlarged view of the reticle assembly at point F is shown.

[0017] Figure 3 yes Figure 1 A schematic diagram of the reticle assembly in direction D.

[0018] Figure 4 yes Figure 3 The enlarged view of section B of the reticle assembly is shown.

[0019] Figure 5 This is a schematic diagram of a reticle assembly with a second light source and a reticle pattern as shown in Embodiment 1.

[0020] Figure 6 yes Figure 5 The enlarged view of section A of the reticle assembly is shown.

[0021] Figure 7 yes Figure 6 A magnified view of point C in the middle.

[0022] Figure 8 yes Figure 7 The dividing centers shown are schematic diagrams of different geometric shapes.

[0023] Figure 9 This is a schematic diagram of the reticle assembly shown in Example 2.

[0024] Figure 10 This is a schematic diagram of the reticle assembly using a 45° reflecting prism as a reflector in Example 3.

[0025] Figure 11 This is a schematic diagram of the reticle assembly in Embodiment 3, which uses a plane mirror as a reflector.

[0026] Figure 12 This is a schematic diagram of the reticle assembly shown in Example 4, which uses a laser as the first light source.

[0027] Figure 13 This is a schematic diagram of the reticle assembly shown in the embodiment, which uses RCLED as the first light source.

[0028] Figure 14 This is a schematic diagram of the reticle assembly shown in Example 5.

[0029] Figure 15 yes Figure 14 The enlarged view of the reticle assembly at point E is shown.

[0030] Figure 16 This is a schematic diagram of the reticle assembly shown in Example 6.

[0031] Figure 17This is a schematic diagram of the reticle assembly shown in Example 7.

[0032] Figure 18 This is a schematic diagram of the reticle assembly shown in Example 8.

[0033] Explanation of reference numerals in the attached drawings: 1. Glass substrate; 2. First light source; 3. Second light source; 4. Light-transmitting reflective groove; 5. First groove wall; 6. Second groove wall; 7. Light-transmitting optical path; 8. Retrieval center; 9. Groove bottom; 11. Illumination pattern; 12. Horizontal reference line; 13. Condensing lens; 14. Reflector; 15. Human eye; 16. Light ray; 17. Third groove wall; 18. Fourth groove wall. Detailed Implementation

[0034] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0035] like Figure 1-18 The diagram shown is a schematic representation of a preferred embodiment of the present invention, illustrating a reticle assembly comprising:

[0036] like Figure 1-4 , Figure 14 and Figure 15 As shown, a glass substrate 1 and a first light source 2 are disposed on the outer periphery of the glass substrate 1. A light-transmitting reflective groove 4 is provided on any surface of the glass substrate 1. The width of the light-transmitting reflective groove 4 ranges from H: 30μm to 60μm, preferably 40μm, and the depth ranges from K: 10μm to 30μm, preferably 20μm. The light-transmitting reflective groove 4 includes a first groove wall 5, a second groove wall 6, a third groove wall 17, and a fourth groove wall 18. The first groove wall 5 is a reflective surface, and its axial projection center is the reticle center of the reticle assembly. The second groove wall 6 intersects with the first groove wall 5 inside the glass substrate to form a groove bottom 9. The third groove wall 17, the fourth groove wall 18, the first groove wall, and the second groove wall 6 together form a light-transmitting optical path 7. Light rays 16 emitted from the first light source illuminate the first groove wall 5 along the light-transmitting optical path 7. The first groove wall 5 reflects the light rays 16 into parallel light, which then enters the user's eye, thereby forming a bright reticle center 8. The first groove wall 5 forms an angle α with the surface of the glass substrate 1, the light ray 16 emitted from the first light source 2 forms an angle β with the surface of the glass substrate 1, and the second groove wall 6 forms an angle θ with the surface of the glass substrate 1. The range of the included angle α is 0° < α ≤ 45°, the range of the included angle β is 0° < β < 90°, and the range of the included angle θ is 0 ≤ θ ≤ β. The axial projection center of the first groove wall 5 coincides with the geometric center of the glass substrate 1.

[0037] To make the position of the reticle center 8 more prominent and to better assist the user in shooting. For example... Figure 5-13 As shown, a reticle pattern is also provided around the reticle center 8 on the glass substrate 1. The reticle pattern includes an illumination pattern 11 and a horizontal reference line 12. The reticle pattern is formed on the glass substrate 1 by etching. The illumination pattern 11 is deposited on its surface by a vapor deposition chamber with a substance used to reflect the light 16 emitted by the second light source 3, such as titanium dioxide or sodium silicate. The horizontal reference line 12 is formed by depositing a chromium substance on its etched portion. A second light source 3 is also provided on the outer periphery of the glass substrate 1. The second light source 3 is spaced apart from the first light source 2. The light emitted by the second light source 3 illuminates the deposited substance on the illumination pattern 11. The deposited substance reflects the light to the user's eyes. The second light source 3 emits a different color than the first light source 2. For example, the first light source 2 emits red light, while the second light source 3 emits green or yellow light. One purpose of this is to make the reticle center 8 appear more vivid and conspicuous against the background of other colors, which helps the user to quickly determine the position of the reticle center 8 and improves the user's aiming efficiency.

[0038] The light-transmitting reflective groove 4 can be obtained by processes such as etching, laser engraving, and CNC machining. This solution preferably adopts the etching process.

[0039] The shape of the groove bottom 9 can be a pointed corner, a rounded surface, or a slightly transitional plane. For ease of processing, the groove bottom 9 in this design is a pointed corner.

[0040] In Example 1, you can refer to Figure 1-8 Two perpendicular virtual line segments, a horizontal line and a vertical line, are drawn through the geometric center of the glass substrate 1. A light-reflecting groove 4 extends from the edge of the glass substrate 1 towards its geometric center along the vertical line. A reticle pattern is arranged around the geometric center of the glass substrate 1. The horizontal reference line 12 is arranged along the horizontal line, and the illumination pattern 11 includes wind deflection auxiliary point patterns, ballistic auxiliary point patterns, and a "horseshoe" pattern for rangefinding, all arranged around the geometric center of the glass substrate 1. A first light source 2 is located at the outer periphery of the glass substrate 1 along the vertical line. The horizontal and vertical lines divide the glass substrate 1 into four parts, and a second light source 3 is located at the edge of any one of these four parts.

[0041] like Figure 3 , Figure 4 As shown, Figure 3 yes Figure 1 The reticle assembly shown is viewed in the D direction. Figure 4 yes Figure 3The enlarged view of the reticle assembly shown at point B. The light-transmitting reflective groove 4 has a width of 40 μm and a depth of 20 μm. The light-transmitting reflective groove 4 includes a first groove wall 5 and a second groove wall 6. The angle α between the first groove wall 5 and the surface of the glass substrate 1 is 45°. The second groove wall 6 is parallel to the surface of the glass substrate 1 where the light-transmitting reflective groove 4 is located, and the angle β between the second groove wall 6 and the surface of the glass substrate 1 is 0°. It forms a light-transmitting path 7 with the other groove walls of the light-transmitting reflective groove 4. The second groove wall 6 extends radially inward from the outer peripheral edge of the glass substrate 1. The first groove wall 5 is inclined to the surface of the glass substrate 1 and intersects with the second groove wall 6 to form a pointed groove bottom 9. The orthographic projection center of the first groove wall 5 coincides with the geometric center of the glass substrate 1. The first light source 2 is a laser, preferably a semiconductor laser, located at the beginning of the optical path 7. Its emitted light beam 16 has a divergence angle as small as milliradians, highly concentrated energy, and a wavelength range of 650nm-1550nm. Even at a distance of 100 meters, the light spot remains essentially unchanged. The light beam 16 emitted by the first light source 2 illuminates the first groove wall 5 along the optical path 7, thus forming the reticle center 8. The second light source 3 emits a different color than the first light source 2 and is used to illuminate the illumination pattern 11 on the glass substrate 1. Against its different color, the reticle center 8 appears more distinct and prominent.

[0042] like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, when the first groove wall 5 is a mirror surface coated with a reflective layer, the entire first groove wall 5 serves as a dividing center 8. The reflective layer can be, but is not limited to, a silver film layer. After the light 16 emitted from the first light source 2 illuminates the first groove wall 5, the second groove wall 6 reflects the light 16 to the eye, and the user can observe a bright luminous point at the eye. When the first groove wall 5 is a frosted surface, the first groove wall 5 can be set with patterns of different geometric shapes as dividing centers 8, such as rectangles, circles, triangles, or crosses. Chemical substances for reflecting light 16 are also deposited on these patterns, which will not be described in detail here. If the geometric pattern is a dot, a cross, or a rectangle, its center is the geometric center of the first groove wall 5. If the geometric shape is a triangle, any one of its apexes coincides with the geometric center of the first groove wall 5.

[0043] In Example 2, unlike Example 1, please refer to... Figure 9The first light source 2 is an RCLED, and a condenser lens 13 is also provided in the light emission direction of the first light source 2 to converge the light 16 emitted by the first light source 2 before illuminating the first slot wall 5. Taking the first slot wall 5 as a mirror as an example, the light spot diameter formed by the light 16 emitted by a commonly used RCLED is 50μm. After being converged by the condenser lens 13, the diameter of the light spot converged on the first slot wall 5 is 40μm. The condenser lens 13 is a spherical lens or an aspherical lens with positive optical power. The number of lenses can be a single lens or a lens group composed of multiple lenses.

[0044] In Example 3, unlike Example 1, please refer to... Figure 10 , Figure 11 A reflector 14 is provided below the light-transmitting reflective groove 4. A laser is located on one side of the reflective surface of the reflector 14. The laser emits light beam 16 towards the reflective surface of the reflector 14. After being emitted by the reflector 14, the light beam 16 enters the light-transmitting reflective groove 4 and finally illuminates the first groove wall 5. The reflector 14 can be a 45° reflecting prism or a plane reflecting mirror.

[0045] In Example 4, unlike Example 2, please refer to... Figure 12 , Figure 13 A reflector 14 is provided below the light-transmitting reflector groove 4. An RCLED is located on one side of the reflective surface of the reflector 14. The RCLED emits light rays 16 towards the reflective surface of the reflector 14. The light rays 16 are reflected by the reflector 14 and then enter the light-transmitting reflector groove 4, finally illuminating the first groove wall 5. The reflector 14 can be a 45° reflecting prism or a plane mirror.

[0046] In Example 5, unlike Example 1, please refer to... Figure 14 , Figure 15The first light source 2 is obliquely positioned in front of the surface of the glass substrate 1 with the light-transmitting reflective groove 4. Its emitted light ray 16 is incident on the first groove wall 5 along the light-transmitting optical path 7, and the first groove wall 5 reflects the light ray 16 to the human eye 15. The angle α formed between the first groove wall 5 and the surface of the glass substrate 1, the angle β formed between the light ray 16 emitted by the first light source 2 and the surface of the glass substrate 1, and the angle θ formed between the second groove wall 6 and the surface of the glass substrate 1 have different values, but the three still need to satisfy the following relationship: the range of the included angle α is 0°<α≤45°, the range of the included angle β is 0°<β<90°, and the range of the included angle θ is 0≤θ≤β. In an optional embodiment, the angle α between the first groove wall 5 and the surface of the glass substrate 1 is 30°. In order to ensure that the light 16 emitted from the first light source 2 is still emitted in a parallel manner after being reflected by the first groove wall 5, the angle β between the light 16 emitted from the first light source 2 and the surface of the glass substrate 1 is 30°. At this time, the angle θ between the second groove wall 6 and the surface of the glass substrate 1 must satisfy 0≤θ≤30° so as not to block the light 16 of the first light source 2 from entering the light path 7 and illuminating the first groove wall 5.

[0047] In Example 6, the difference from Example 5 is as follows, please refer to... Figure 16 The first light source 2 is an RCLED, and a condenser lens 13 is provided in the direction of the light 16 emitted by the RCLED. The condenser lens 13 is a spherical lens or an aspherical lens with positive optical power. The number of lenses can be a single lens or a lens group composed of multiple lenses.

[0048] In Example 7, unlike Example 5, please refer to... Figure 17 The light beam 16 emitted by the laser is reflected by the reflector 14 and then incident on the second groove wall 6. The reflector 14 can be a 45° reflecting prism or a plane reflector.

[0049] In Example 8, unlike Example 6, please refer to... Figure 18 The light beam 16 emitted by the RCLED passes through the reflector 14 and enters the second groove wall 6. The reflector 14 can be a 45° reflecting prism or a plane reflector.

[0050] The above are merely preferred embodiments of the present invention, and only specifically describe the technical principles of the present invention. These descriptions are only for explaining the principles of the present invention and should not be construed as limiting the scope of protection of the present invention in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention, as well as other specific embodiments of the present invention that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of the present invention.

Claims

1. A reticle assembly, characterized in that, The assembly includes a glass substrate (1) and a first light source (2) disposed on the outer periphery of the glass substrate (1). A light-transmitting reflective groove (4) is provided on any surface of the glass substrate (1). The light (16) emitted from the first light source (2) is incident on the light-transmitting reflective groove (4). The light-transmitting reflective groove (4) includes a first groove wall (5), a second groove wall (6), a third groove wall (17), and a fourth groove wall (18). The first groove wall (5) is a reflective surface and its axial projection is the reticle center (8) of the reticle assembly. The second groove wall (6) intersects with the first groove wall (5) inside the glass substrate (1) to form a groove bottom (9). The third groove wall (17), the fourth groove wall (18), the first groove wall (5), and the second groove wall (6) together form a light-transmitting optical path (7). The light (16) emitted from the first light source (2) irradiates the first groove wall (5) along the light-transmitting optical path (7). The first groove wall (5) reflects the light (16) into the first groove wall (5). The light is reflected to the human eye (15). The width of the light-transmitting reflective groove (4) is 40 μm and the depth is 20 μm. The axial projection center of the first groove wall (5) coincides with the geometric center of the glass substrate (1). The shape of the dividing center (8) is one of a dot, a cross, a triangle or a rectangle. The surface of the glass substrate (1) with the light-transmitting reflective groove (4) is also provided with a dividing pattern. The dividing pattern includes an illumination pattern (11) and a horizontal reference line (12) coated with a metal film. The illumination pattern (11) and the horizontal reference line (12) are respectively set around the axial projection center of the first groove wall (5). The glass substrate (1) is also provided with a second light source (3) for illuminating the dividing pattern at the edge of the first light source (2). The color of the first light source (2) is different from that of the second light source (3). The illumination pattern (11) is deposited with a material for reflecting the light (16) emitted by the second light source (3).

2. The reticle assembly as described in claim 1, characterized in that, The second groove wall (6) is parallel to the surface of the glass substrate (1), and the second groove wall (6) starts from the edge of the glass substrate (1) and extends radially to the bottom of the groove (9), while the first groove wall (5) is inclined to the surface of the glass substrate (1).

3. A reticle assembly as described in claim 1, characterized in that, Both the first groove wall (5) and the second groove wall (6) are inclined to the surface of the glass substrate (1).

4. A reticle assembly as described in claim 2, characterized in that, The first light source (2) is a laser, and the first light source (2) is located below the light path (7), and the light (16) emitted from the first light source (2) is parallel to the second groove wall (6); or, the first light source (2) is an RCLED, and the first light source (2) is located below the light path (7), and a condenser lens (13) with positive optical power is provided between the first light source and the light path (7), and the light (16) emitted from the first light source (2) is parallel to the second groove wall (6).

5. A reticle assembly as described in claim 2, characterized in that, The first light source (2) is a laser, and a reflector (14) is provided below the light transmission path (7). The first light source (2) is located on the outer peripheral edge of the glass substrate (1) and on one side of the reflector (14). The light (16) emitted from the first light source (2) is reflected by the reflector (14) and enters the light transmission path (7) and illuminates the first groove wall (5). The reflector (14) is either a 45° reflecting prism or a plane reflecting mirror; or, the first light source (2) is an RCLED, and the light transmission path (7) is... A reflector (14) is provided below. A condenser lens (13) with positive optical power is provided between the first light source (2) and the reflector (14). The first light source (2) is located on the outer periphery of the glass substrate (1) and on one side of the reflector (14). The light (16) emitted from the first light source (2) passes through the condenser lens (13) and is reflected by the reflector (14) to the light path (7) and illuminates the first groove wall (5). The reflector (14) is either a 45° reflecting prism or a plane reflecting mirror.

6. A reticle assembly as described in claim 3, characterized in that, The first light source (2) is a laser. The first light source (2) is obliquely disposed in front of the surface of the glass substrate (1) having the light-transmitting reflection groove (4). The light (16) emitted from the first light source (2) is incident on the light-transmitting optical path (7) and illuminates the first groove wall (5). The first light source (2) is an RCLED. The first light source (2) is obliquely disposed in front of the surface of the glass substrate (1) having the light-transmitting reflection groove (4). A condensing lens (13) is also provided between the first light source (2) and the light-transmitting optical path (7). The light (16) emitted from the first light source (2) passes through the condensing lens (13) and then enters the light-transmitting optical path (7) and illuminates the first groove wall (5).

7. A reticle assembly as described in claim 3, characterized in that, The first light source (2) is a laser. The first light source (2) is located in front of the surface of the glass substrate (1) having the light-transmitting reflective groove (4). A reflector (14) is also provided between the first light source (2) and the glass substrate (1). The light (16) emitted from the first light source (2) is reflected by the reflector (14) to the light-transmitting optical path (7) and illuminates the first groove wall (5). The reflector (14) is either a 45° reflecting prism or a plane reflecting mirror. The first light source (2) is an R CLED, the first light source (2) is located in front of the surface of the glass substrate (1) where the light-transmitting reflective groove (4) is located. Between the first light source (2) and the glass substrate (1), a condenser lens (13) with positive optical power and a reflector (14) are arranged in sequence. The light (16) passes through the condenser lens (13) and the reflector (14) in sequence and then enters the light-transmitting optical path (7) and irradiates the first groove wall (5). The reflector (14) is either a 45° reflecting prism or a plane reflecting mirror.

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