Fly-eye lens fixing structure
The use of metal springs and screws to fix the compound eye lens in DLP projection lighting systems solves the problems of inconvenient disassembly and damage to optical performance, achieving a compact and low-cost fixing method that ensures the stability of the optical system and the coaxiality of the optical path.
Patent Information
- Application Number
- CN202520712316.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-04-16
AI Technical Summary
Existing compound eye lens fixing structures in DLP projection lighting systems suffer from problems such as inconvenient disassembly, large space occupation, easily affected optical performance, and fixation failure under extreme environments.
The compound eye lens is pressed into the mounting groove of the lens seat by the elastic force of the first and second fixed side springs and is locked by fastening screws. Combined with the threaded pressure ring, the concentricity and adjustability of the lens are ensured.
This design achieves compact fixation of the compound eye lens, simplifies the disassembly process, reduces costs, avoids performance degradation of adhesives and elastic components in extreme environments, and ensures the compactness of the optical system and the coaxiality of the optical path.
Smart Images
Figure CN223955870U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to optical technology field especially is a kind of fixing structure of compound eye lens. BACKGROUND
[0002] Compound eye lens is combined by a series of small lenses, and high light energy utilization and large-area uniform illumination can be obtained by applying double-row compound eye lens array to backlight illumination system.
[0003] Compound eye lens mainly plays the role of light uniformity and color mixing in DLP projection illumination system, and the collimation, concentricity and optical path coaxiality of multiple lens arrays need to be ensured during fixing;The fixing structure of compound eye lens generally adopts the mode of placing compound eye lens into prefabricated integrated square fixed frame, and then using adhesive fixing, threaded compression ring or elastic member fixing.
[0004] The above fixing structure has certain defects:
[0005] 1, the disadvantage of adhesive mode is that lens is not easy to disassemble;
[0006] 2, the disadvantage of threaded compression ring fixing is that compression ring needs to be fixed on lens barrel through threaded structure, which increases the axial length of lens barrel, may affect the compactness design of optical system, in addition, the control requirement of compression force is high, if the pressure is too large during screwing of compression ring, lens is prone to elastic deformation or even damage, and the curvature radius of lens may be changed, which affects optical performance;
[0007] 3, in the fixing of elastic member, elastic part (such as rubber or plastic snap spring) is prone to performance attenuation in high temperature, low temperature or contact with oil dirt environment, for example, rubber can be hardened, brittle or even cracked, which leads to fixing failure. UTILITY MODEL CONTENT
[0008] Therefore, the utility model solves the technical problems in the prior art that the fixing structure of compound eye lens has certain limitations in DLP projection illumination system.
[0009] To solve the above technical problems, the utility model provides a fixed structure of compound eye lens, include: lens seat, be equipped with installation recess groove on it, compound eye lens, set up in the installation recess groove, first fixed side elastic piece, install on the lens seat, and first fixed side elastic piece utilizes the elastic force and press compound eye lens to one side inner wall in the installation recess groove, second fixed side elastic piece, install on the lens seat, and second fixed side elastic piece utilizes the elastic force and press compound eye lens to the other side inner wall in the installation recess groove, fixed pressure piece, install on the lens seat, and fixed pressure piece is used for press compound eye lens to the bottom surface in the installation recess groove, the fixed structure of compound eye lens of the utility model has the advantages such as overall compact, convenient to disassemble, axial space occupation is little, cost is low, simple operation, and the advantages of combining threaded pressure ring and elastic piece fixation are avoided, and the disadvantages of other fixing modes, such as adhesive, threaded pressure ring, plastic elastic piece fixation are avoided.
[0010] In an embodiment of the utility model, the first fixed side elastic piece and the second fixed side elastic piece are identical in structure, the first fixed side elastic piece and the second fixed side elastic piece are both in the shape of a rectangular sheet, and a wide side of one side of the rectangular sheet is connected with a tab, the tab is in the shape of a circular arc, and the tab is in contact with the side wall of the compound eye lens.
[0011] In an embodiment of the utility model, the installation recess groove is a rectangular groove, the bottom surface of the installation recess groove is provided with a first through hole, a lens support surface is arranged between the installation recess groove and the first through hole, and the bottom surface of the compound eye lens is in contact with the lens support surface.
[0012] In an embodiment of the utility model, the installation recess groove is a rectangular groove, the bottom surface of the installation recess groove is provided with a first through hole, a lens support surface is arranged between the installation recess groove and the first through hole, and the bottom surface of the compound eye lens is in contact with the lens support surface.
[0013] In an embodiment of the utility model, two adjacent inner walls of the installation recess groove are respectively provided with a first recess groove and a second recess groove, the first fixed side elastic piece is arranged in the first recess groove, and the second fixed side elastic piece is arranged in the second recess groove.
[0014] In an embodiment of the utility model, the fixed pressure piece is provided with a second through hole at a position opposite to the compound eye lens, and the second through hole is used for avoiding the second through hole.
[0015] In an embodiment of the utility model, the inner wall of the second through hole is provided with a plurality of pressing claws, and the pressing claws are used for pressing the upper end surface of the compound eye lens.
[0016] In an embodiment of the utility model, the fixed pressure piece is provided with a third through hole at a position opposite to the first fixed side elastic piece and the second fixed side elastic piece.
[0017] In an embodiment of the utility model, the lens seat is rectangular body, and the center of lens seat is equipped with round boss, the installation recess is arranged at the center position of round boss, be equipped with round recess on the round boss, the section of fixed pressing piece is circular, and fixed pressing piece sets up in round recess.
[0018] In an embodiment of the utility model, the fixing structure further includes a fastening screw, the first fixed side elastic sheet, the second fixed side elastic sheet and the fixed pressing piece are all locked on the lens seat through the fastening screw.
[0019] The above technical scheme of the utility model has the following beneficial effects compared with the prior art:
[0020] The fixing structure of the compound eye lens uses metal elastic sheets to fix the compound eye lens, uses screws to fix the metal elastic sheets, and sets circular structures on the upper and lower compound eye lens seats to ensure the concentricity of the compound eye lens and the axial lens of the light path. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to make the content of the utility model more easily understood clearly, the utility model is further explained in detail below according to the specific embodiments of the utility model and in conjunction with the drawings, wherein
[0022] Figure 1 It is the assembly drawing of the fixing structure of the compound eye lens in the preferred embodiment of the utility model;
[0023] Figure 2 It is the explosion view of the fixing structure of the compound eye lens in the preferred embodiment of the utility model;
[0024] Figure 3 It is the partial structure schematic view of the fixing structure of the compound eye lens in the preferred embodiment of the utility model;
[0025] Figure 4 It is the structure schematic view of the first fixed side elastic sheet or the second fixed side elastic sheet in the preferred embodiment of the utility model;
[0026] Figure 5 It is the structure schematic view of the lens seat in the preferred embodiment of the utility model;
[0027] Figure 6 It is the structure schematic view of the fixed pressing piece in the preferred embodiment of the utility model;
[0028] Figure 7The utility model discloses the fixed structure of compound eye lens of preferred embodiment.
[0029] Description of the drawings: lens seat 1, mounting groove 11, first through hole 111, lens support surface 112, avoidance groove 113, first recess 114, second recess 115, boss 116, round boss 12, round recess 13, compound eye lens 2, first fixed side elastic sheet 3, plectrum 31, second fixed side elastic sheet 4, fixed pressing piece 5, second through hole 51, press claw 511, third through hole 52, fastening screw 6. DETAILED DESCRIPTION
[0030] The utility model will be further explained in connection with the drawings and specific embodiment, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model.
[0031] Reference Figures 1-3 The utility model discloses the fixed structure of compound eye lens, including: lens seat 1, compound eye lens 2, first fixed side elastic sheet 3, second fixed side elastic sheet 4, fixed pressing piece 5 and a plurality of fastening screw 6;Lens seat 1, is equipped with mounting groove 11 on it;Compound eye lens 2 is arranged in mounting groove 11;First fixed side elastic sheet 3 is installed on lens seat 1, and the first fixed side elastic sheet 3 utilizes the elastic force and press tightly compound eye lens 2 to the one -sided inner wall in mounting groove 11;Second fixed side elastic sheet 4 is installed on lens seat 1, and the second fixed side elastic sheet 4 utilizes the elastic force and press tightly compound eye lens 2 to the other side inner wall in mounting groove 11;Fixed pressing piece 5 is installed on lens seat 1, and the fixed pressing piece 5 is used for press tightly compound eye lens 2 to the bottom surface in mounting groove 11, the first fixed side elastic sheet 3, second fixed side elastic sheet 4 and fixed pressing piece 5 are all locked on lens seat 1 by fastening screw 6.
[0032] Utilize the elasticity of metal piece first fixed side elastic sheet 3 and second fixed side elastic sheet 4, first fixed side elastic sheet 3, second fixed side elastic sheet 4 and fixed pressing piece 5 combination press tightly compound eye lens 2, and use fastening screw 6 and press the elasticity piece mechanically, and the overall structure is compact, and dismounting is convenient, and axial occupies small, and cost is low, and operation is simple.
[0033] Reference Figure 4As shown, the first fixed side elastic sheet 3 and the second fixed side elastic sheet 4 are of the same structure, both of which are rectangular sheet-shaped, and a wide side of one side of the rectangular sheet is connected with a tab 31, the tab 31 is of a circular arc crimp shape, and the tab 31 is in contact with the side wall of the compound eye lens 2. The cross section of the first fixed side elastic sheet 3 and the second fixed side elastic sheet 4 after connecting the tab 31 is a "6" shape, the first fixed side elastic sheet 3 and the second fixed side elastic sheet 4 are fixed ends, which are used to be fixed on the lens seat 1, and after the tab 31 is crimped and bent into an arc shape, it has a certain elasticity, and the compound eye lens 2 is pressed against the two adjacent inner walls of the mounting groove 11.
[0034] Referring to Figure 5 As shown, the mounting groove 11 is a rectangular groove, and the bottom surface of the mounting groove 11 is provided with a first through hole 111, and a lens support surface 112 is provided between the mounting groove 11 and the first through hole 111, and the bottom surface of the compound eye lens 2 is in contact with the lens support surface 112. The cross section of the first through hole 111 is rectangular, and the cross sectional area of the first through hole 111 is smaller than that of the mounting groove 11, and the first through hole 111 is located at the middle position of the bottom surface of the mounting groove 11, so there is a transition step between the bottom surface of the mounting groove 11 to the first through hole 111, and the remaining part of the bottom surface of the mounting groove 11 is the lens support surface 112.
[0035] In the above structure, the four corner positions of the mounting groove 11 are provided with an avoidance groove 113, which is a circular groove. Since the compound eye lens 2 is a rectangular body, the avoidance groove 113 can avoid interference or collision between the four corners of the compound eye lens 2 and the corners of the mounting groove 11, and also facilitates the compound eye lens 2 to be put into the mounting groove 11.
[0036] In the above structure, two adjacent inner walls of the mounting groove 11 are respectively provided with a first groove 114 and a second groove 115, the first fixed side elastic sheet 3 is installed in the first groove 114, and the second fixed side elastic sheet 4 is installed in the second groove 115. The first groove 114 and the second groove 115 are rectangular grooves, and the first groove 114 and the second groove 115 are in communication with the mounting groove 11. The inner walls opposite to the first groove 114 and the second groove 115 of the mounting groove 11 are respectively provided with a boss 116, one end of the first fixed side elastic sheet 3 is locked on the boss 116 of the first groove 114 by a screw, and one end of the second fixed side elastic sheet 4 is locked on the boss 116 of the second groove 115 by a screw. The arc-shaped protruding part of one end of the tab 31 extends into the mounting groove 11 to abut against the side wall of the compound eye lens 2.
[0037] Referring to Figure 6As shown, the fixing plate 5 is provided with a second through hole 51 directly opposite the compound eye lens 2. The second through hole 51 is used to avoid the compound eye lens 2. The compound eye lens 2 can be exposed through the second through hole 51. Several pressing claws 511 are provided on the inner wall of the second through hole 51. The pressing claws 511 are used to press the upper end surface of the compound eye lens 2. Preferably, the fixing plate 5 with a circular cross-section is provided with eight pressing claws 511, which mainly serve to press the lens. The eight pressing claws 511 ensure that each corner of the compound eye lens 2 can be pressed in the XY direction, while avoiding direct pressing on the four corners of the compound eye lens 2, which would cause damage to the four corners of the compound eye lens 2.
[0038] In the above structure, a third through hole 52 is provided at the positions where the fixing plate 5, the first fixing side spring 3, and the second fixing side spring 4 are positioned. The third through hole 52 can avoid the first fixing side spring 3 and the second fixing side spring 4, making it convenient for the first fixing side spring 3 and the second fixing side spring 4 to be inserted into the first groove 114 and the second groove 115.
[0039] Reference Figure 1 As shown, the lens holder 1 is a rectangular body, and a circular boss 12 is provided at the center of the lens holder 1. The mounting groove 11 is provided at the center of the circular boss 12. A circular groove 13 is provided on the circular boss 12. The cross-section of the fixing plate 5 is circular, and the fixing plate 5 is provided in the circular groove 13.
[0040] Reference Figure 7 The installation steps of the fixing structure of the compound eye lens of this utility model are shown below:
[0041] 1. Place the compound eye lens 2 into the preset mounting groove 11 on the lens holder 1;
[0042] 2. First, use the fastening screw 6 to fasten the fixing plate 5 to the threaded hole on the lens mount 1. Do not tighten the fastening screw 6, leaving a little space.
[0043] 3. Then install the first fixed-side spring 3 and the second fixed-side spring 4 into the preset mounting groove 11 on the lens mount 1 (the first fixed-side spring 3 and the second fixed-side spring 4 are as follows). Figure 7 (Insert the lens into the first groove 114 and the second groove 115 in the direction of the middle arrow). Use the elastic force of the first fixed side spring 3 and the second fixed side spring 4 to press the compound eye lens 2 tightly, so that the positioning surface of the compound eye lens 2 is in close contact with the limiting surface of the mounting groove 11.
[0044] 4. Rotate the levers of the first fixed side spring 3 and the second fixed side spring 4 to align the through holes on the first fixed side spring 3 and the second fixed side spring 4 with the threaded holes on the lens mount 1. Secure the fastening screw 6 to the threaded holes on the lens mount 1, leaving a little space.
[0045] 5. Cross-tight 4 fastening screws 6, fixed tablet 5 uniform compression of complex eye lens 2;
[0046] The above completes the entire installation steps.
[0047] Obviously, the above embodiments are only examples for the sake of clarity, and are not limited to the embodiments. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present utility model.
Claims
1. A fixing structure of a compound eye lens, characterized by comprising: The utility model relates to a fixing structure of compound eye lens, which comprises the following: a lens seat, which is provided with a mounting groove; a compound eye lens, which is arranged in the mounting groove; a first fixed side elastic sheet, which is mounted on the lens seat and uses elastic force to press the compound eye lens against one side inner wall of the mounting groove; a second fixed side elastic sheet, which is mounted on the lens seat and uses elastic force to press the compound eye lens against the other side inner wall of the mounting groove; a fixed pressing sheet, which is mounted on the lens seat and is used to press the compound eye lens against the bottom surface of the mounting groove.
2. The fixing structure of a fly's eye lens according to claim 1, characterized in that: The first fixed side elastic sheet and the second fixed side elastic sheet are of the same structure, are in the shape of a rectangular sheet, and have a wide side on one side of the rectangular sheet, to which a tab is connected; the tab is in the shape of a circular arc and is in contact with the side wall of the compound eye lens.
3. The fixing structure of a fly's eye lens according to claim 1, characterized in that: The mounting groove is a rectangular groove, and the bottom surface of the mounting groove is provided with a first through hole; a lens supporting surface is arranged between the mounting groove and the first through hole, and the bottom surface of the compound eye lens is in contact with the lens supporting surface.
4. The fixing structure of a fly's eye lens according to claim 3, characterized in that: The mounting groove is provided with an avoiding groove at each of the four corner positions; the avoiding groove is a circular groove.
5. The fixing structure of fly's eye lens according to claim 3 or 4, characterized in that: Two adjacent inner walls of the mounting groove are respectively provided with a first groove and a second groove; the first fixed side elastic sheet is mounted in the first groove, and the second fixed side elastic sheet is mounted in the second groove.
6. The fixing structure of a fly's eye lens according to claim 1, characterized by: The fixed pressing sheet is provided with a second through hole at the position opposite to the compound eye lens; the second through hole is used to avoid the second through hole.
7. The fixing structure of a fly's eye lens according to claim 6, characterized in that: The inner wall of the second through hole is provided with a plurality of pressing claws, which are used to press against the upper end surface of the compound eye lens.
8. The fixing structure of the fly's eye lens according to claim 7, characterized in that: The fixed pressing sheet is provided with a third through hole at the position opposite to the first fixed side elastic sheet and the second fixed side elastic sheet.
9. The fixing structure of a fly's eye lens according to claim 1, characterized by: The lens seat is a rectangular body, and the center of the lens seat is provided with a circular boss; the mounting groove is arranged at the center position of the circular boss; the circular boss is provided with a circular groove; the fixed pressing sheet is in the shape of a circle, and is arranged in the circular groove.
10. The fixing structure of a fly's eye lens according to claim 1, characterized by: The fixing structure further comprises a fastening screw; the first fixed side elastic sheet, the second fixed side elastic sheet, and the fixed pressing sheet are locked on the lens seat by the fastening screw.