Adjustable differential interference prism

Abstract

The utility model relates to the technical field of optical adjustment, and discloses an adjustable differential interference prism, which comprises a cuboid-shaped fixing frame with a hollow middle part and a cuboid-shaped lens, and the surface of the fixing frame is parallel to the surface of the lens; a connecting plate is arranged in the fixing frame, the connecting plate is fixedly connected with the fixing frame, a plurality of first lead screws are arranged between the connecting plate and the lens, one end of each first lead screw is fixedly connected with the connecting plate through threads, and the other end of each first lead screw is attached to the lens; a differential interference prism is arranged on the vertical surface of one side of the fixed frame; a second lead screw penetrates through the top of the fixing frame and is in threaded connection with the fixing frame, a rotating disc is fixedly connected to the end, away from the fixing frame, of the second lead screw, the other end of the second lead screw is attached to the lens, the second lead screw is vertically arranged, and the rotating disc is horizontally arranged. According to the utility model, the first screw rod and the second screw rod are matched for use, so that the lens can be conveniently adjusted, and the use is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical adjustment technical field especially relates to an adjustable differential interference prism. BACKGROUND

[0002] Differential interference prism is a kind of optical element, its essence is the polyhedron made of transparent material (such as glass, crystal, etc.). Differential interference prism has two or more mutually parallel plane sides, these sides intersect but not parallel to each other, can change the propagation direction of light. When light is incident from one side, it will refract and reflect inside, then shoot from another side, form deflected or dispersed light beam. Differential interference prism is widely used in digital device, science and technology, medical instrument and other fields, is used for light splitting, dispersion, changes light path, adjusts imaging position and so on.

[0003] The main purpose of differential interference prism adjustment is to optimize optical performance and ensure imaging quality. In many optical systems, such as microscope, projector and laser equipment, differential interference prism is used to change the propagation direction of light, focus or disperse light to achieve the desired effect. However, the use environment and demand of optical system often change, so it is necessary to adjust the lens frequently. The existing differential interference prism adjustment device is usually complex in structure, involves multiple mechanical elements and precise adjustment mechanism, which leads to high production and maintenance cost. For example, high slide rail and clamp and other components often need expensive materials and processing technology. In addition, these devices need to be calibrated repeatedly once adjusted improperly during use, which further increases the maintenance cost and time. Another problem is that the existing adjustment device is not flexible enough, and its adaptability to different application scenarios is poor. This requires users to invest more resources and effort when replacing or adjusting the device to ensure that the performance of the optical system always remains optimal. Especially in the case of frequent adjustment, users may face higher operating costs. SUMMARY

[0004] In order to solve the problem of complex structure of differential interference prism adjustment device in the prior art, which leads to high production cost and repeated calibration if adjusted improperly during use, wasting time, the utility model provides a kind of adjustable differential interference prism.

[0005] The utility model discloses a through following technical scheme realizes: including fixed frame and lens, the fixed frame middle part hollow is used for accommodating lens, the lens is cuboid shape, the fixed frame whole presents cuboid shape, and the surface of fixed frame is parallel with the surface of lens, the fixed frame middle part hollow place is close to the bottom surface position and is provided with the connecting plate, the connecting plate is fixedly connected with the fixed frame, be provided with a plurality of first screw rod between the connecting plate and lens, one end of first screw rod is fixedly connected through the thread with the connecting plate, the other end of first screw rod is pasted with lens, the vertical surface on one side of fixed frame is provided with differential interference prism, the top of fixed frame is provided with the second screw rod in penetration, the second screw rod is connected through the thread with the fixed frame, the one end of second screw rod is fixedly connected with the rotating disc away from the fixed frame, the other end of second screw rod is pasted with lens, the second screw rod is vertically arranged, and the rotating disc is horizontally arranged.

[0006] As further preferred, the fixed frame is perpendicular to the two sides where the differential interference prism is arranged, and a plurality of fixed rods are arranged respectively, the fixed rods are vertically arranged and arrayed in the horizontal direction; one end of the fixed rod is fixedly connected with the fixed frame, and the other end is fixedly connected with a connecting sleeve, the connecting sleeve is sleeved on the third screw rod and connected with the third screw rod through a thread; one end of the third screw rod is in contact with the lens, and the other end is fixedly connected with a disc.

[0007] As further preferred, a limiting frame is arranged between the third screw rod and the lens; the limiting frame is fixedly connected with the third screw rod.

[0008] As further preferred, the limiting frame is in the shape of L as a whole, and the two sides of the limiting frame in the shape of L are respectively pasted with two mutually perpendicular surfaces of the lens.

[0009] As further preferred, a protective pad is arranged between the first screw rod and the lens.

[0010] As further preferred, the connecting plate is fixedly connected with the fixed frame through a bolt, a protrusion is arranged on the side of the connecting plate close to the fixed frame, a groove matched with the protrusion on the connecting plate is arranged at the corresponding position of the fixed frame, and the connecting plate and the fixed frame are fixedly connected through a connecting piece.

[0011] As further preferred, a horizontally arranged mounting disc is fixedly connected with the one end of the second screw rod close to the lens, and a positioning bead is fixedly connected with the side of the mounting disc away from the second screw rod.

[0012] As further preferred, a silk sleeve is sleeved on the first screw rod, and the silk sleeve is connected with the first screw rod through a thread.

[0013] As further preferred, a supporting frame is arranged at the bottom of the fixed frame, a supporting plate is arranged at the bottom of the supporting frame, and the supporting frame is detachably connected with the fixed frame through a plurality of mounting frames.

[0014] As further preferred, the mounting frame is L-shaped as a whole, and two edges of the L-shaped mounting frame are respectively detachably connected with the support frame and the fixing frame.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] 1. The utility model discloses a first screw rod is set up conveniently two, through setting up first screw rod, can conveniently install the protective pad, through setting up the protective pad, can conveniently fix the bottom of lens, through setting up the rotating disc, can conveniently drive second screw rod and rotate, through setting up second screw rod, can conveniently drive installation disc and move, through setting up installation disc, can conveniently install the locating bead, through setting up the cooperation of locating bead and protective pad, can conveniently position lens, through setting up the cooperation of first screw rod, second screw rod, locating bead and protective pad, can conveniently adjust lens, convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole structure schematic diagram of the utility model.

[0018] Figure 2 It is the fixed frame and connecting plate structure schematic diagram of the utility model.

[0019] Figure 3 It is the connecting sleeve and third screw rod structure schematic diagram of the utility model.

[0020] Figure 4 It is the connecting sleeve and third screw rod structure explosion schematic diagram of the utility model.

[0021] Indicated in the drawing:

[0022] 1, fixed frame, 2, connecting plate, 3, first screw rod, 4, protective pad, 5, second screw rod, 6, rotating disc, 7, installation disc, 8, locating bead, 9, silk cover, 10, connecting piece, 11, support frame, 12, support plate, 13, mounting frame, 14, fixed rod, 15, connecting sleeve, 16, third screw rod, 17, limit frame, 18, differential interference prism, 19, lens. DETAILED DESCRIPTION

[0023] The advantages and characteristics of the utility model will be illustrated and explained by the following non-restrictive preferred embodiments, and these embodiments are given only as examples with reference to the drawings.

[0024] As Figures 1 to 4The utility model provides a kind of adjustable differential interference prism, including fixed frame 1 and lens 19, the middle part of fixed frame 1 is hollow, for accommodating lens 19, the lens 19 is cuboid shape.Oblique setting can be length direction horizontal of cuboid shape lens 19, the utility model's drawing is with length direction horizontal setting of cuboid shape lens 19 as example.Oblique setting can be length direction vertical of cuboid shape lens 19, the utility model's drawing is with length direction horizontal setting of cuboid shape lens 19 as example. The fixed frame 1 is also cuboid shape as a whole, and the surface of fixed frame 1 is parallel with the surface of lens 19. The middle part of fixed frame 1 hollow place is close to bottom surface position and is provided with connecting plate 2, the connecting plate 2 is fixedly connected with fixed frame 1, a plurality of first lead screws 3 are provided between the connecting plate 2 and lens 19, one end of the first lead screw 3 is fixedly connected with the connecting plate 2 by screw thread, and the other end of the first lead screw 3 is attached with lens 19. To prevent first lead screw 3 from causing damage to lens 19, protective pad 4 can be provided between first lead screw 3 and lens 19. The connecting plate 2 is fixedly connected with fixed frame 1 by bolt, the connecting plate 2 is provided with protrusion close to one side of fixed frame 1, and the fixed frame 1 is provided with recess matched with the protrusion on the connecting plate 2 at the corresponding position. The protrusion on the connecting plate 2 is inserted into the recess on the fixed frame 1, and is fixedly connected by connecting piece 10. The connecting piece 10 is perpendicular to the surface of fixed frame 1, and the protrusion on the connecting plate 2 in the fixed frame 1 is fixedly connected by screw thread. By setting connecting plate 2, first lead screw 3 can be conveniently twisted into, by setting first lead screw 3, protective pad 4 can be conveniently installed, by setting protective pad 4, the bottom of lens 19 can be conveniently fixed, and first lead screw 3 is prevented from causing damage to lens 19 due to bumping.

[0025] The vertical surface of one side of the fixed frame 1 is provided with a differential interference prism 18, the differential interference prism 18 is composed of two polarizing plates, two independent rotating frames are provided on the polarizing plates, and the stress condition of the lens 19 in the fixed frame 1 can be observed by rotating the frame in the sunlight.

[0026] The top of the fixed frame 1 is provided with a second lead screw 5, which is connected with the fixed frame 1 through threads, and the end of the second lead screw 5 away from the fixed frame 1 is fixedly connected with a rotating disc 6, and the other end of the second lead screw 5 is attached to the lens 19. As preferred, the other end of the second lead screw 5 is fixedly connected with a mounting disc 7. The second lead screw 5 is vertically arranged, and the rotating disc 6 and the mounting disc 7 are both horizontally arranged. The mounting disc 7 is fixedly connected with a positioning bead 8 away from the second lead screw 5. By arranging the rotating disc 6, the second lead screw 5 can be conveniently driven to rotate, by arranging the second lead screw 5, the mounting disc 7 can be conveniently driven to move, and by arranging the mounting disc 7, the positioning bead 8 can be conveniently installed. The positioning bead 8 is used for positioning the lens 19. By arranging the positioning bead 8 and the protective pad 4, the lens 19 can be conveniently positioned, and by arranging the first lead screw 3, the second lead screw 5, the positioning bead 8 and the protective pad 4, the lens 19 can be conveniently adjusted, which is convenient to use.

[0027] As Figure 3 and Figure 4 shown, the first lead screw 3 is further sleeved with a lead sleeve 9, which is connected with the first lead screw 3 through threads. By arranging the lead sleeve 9, the lead sleeve 9 can abut against the connecting plate 2, so as to limit the first lead screw 3, preventing the first lead screw 3 from loosening during the experiment, which causes the lens 19 to deviate.

[0028] The bottom of the fixed frame 1 is provided with a support frame 11, the bottom of the support frame 11 is provided with a support plate 12, and the support frame 11 is detachably connected with the fixed frame 1 through a plurality of mounting frames 13. The support frame 11 is provided with a plurality of height sizes, which facilitates the cushioning of the fixed frame 1 to adapt to different detection instruments. The mounting frame 13 is in the shape of L as a whole, and the two edges of the L-shaped mounting frame 13 are detachably connected with the support frame 11 and the fixed frame 1, respectively. By arranging the support frame 11 and the support plate 12, the main body can be conveniently supported, and the support frame 11 with different heights can be selected to adapt to detection instruments with different specifications. By arranging the mounting frame 13, the stability of the support frame 11 can be conveniently improved.

[0029] As Figure 4As shown, the fixed frame 1 is provided with a plurality of fixed rods 14 perpendicularly to two sides where the differential interference prism 18 is arranged, and the fixed rods 14 are vertically arranged and arrayed in the horizontal direction. One end of the fixed rod 14 is fixedly connected with the fixed frame 1, and the other end is fixedly connected with the connecting sleeve 15. The connecting sleeve 15 is sleeved on the third screw rod 16, and the connecting sleeve 15 is threadedly connected with the third screw rod 16. One end of the third screw rod 16 is in contact with the lens 19, and the other end is fixedly connected with a disc. By arranging the disc, the disc rotates to drive the third screw rod 16 to rotate, and the third screw rod 16 can be close to and away from the lens 19 under the limiting action of the connecting sleeve 15. In order to prevent the third screw rod 16 from damaging the lens 19, a limiting frame 17 can be arranged between the third screw rod 16 and the lens 19. The limiting frame 17 is fixedly connected with the third screw rod 16. The limiting frame 17 is preferably L-shaped as a whole, and the two sides of the L-shaped limiting frame 17 are respectively attached to two mutually perpendicular surfaces of the lens 19, so as to limit the movement of the two surfaces of the lens 19. Preferably, the limiting frame 17 is vertically arranged, and is used for limiting one surface of the lens 19 perpendicularly to the differential interference prism 18 and one surface of the lens 19 away from the differential interference prism 18.

[0030] By arranging the fixed rod 14, the connecting sleeve 15 can be conveniently fixed. By arranging the connecting sleeve 15, the third screw rod 16 can be conveniently rotated. By arranging the third screw rod 16, the limiting frame 17 can be conveniently moved. By arranging the limiting frame 17, the lens 19 can be conveniently limited.

[0031] By arranging the first screw rod 3, the second screw rod 5, the third screw rod 16 and the limiting frame 17, the remaining five surfaces of the rectangular parallelepiped-shaped lens 19 except one surface close to the differential interference prism 18 can be limited.

[0032] Working principle: first, the first screw rod 3 is adjusted to the appropriate length in the connecting plate 2, then the lens 19 is placed on the protective pad 4, and then the rotating disc 6 is rotated, the rotating disc 6 rotates to drive the second screw rod 5 to rotate, and the second screw rod 5 rotates to drive the mounting disc 7 and the positioning bead 8 to move, so as to clamp and position the lens 19. When the position of the lens 19 needs to be adjusted, the first screw rod 3 is only needed to be adjusted to the appropriate length in the connecting plate 2, and then the second screw rod 5 is driven to adjust the positioning bead 8 to the appropriate length, and then the differential interference prism 18 is placed outside the fixed frame 1, which is composed of two polarizing plates, and there are two independent rotating mirror frames on the polarizing plate. The stress condition of the lens 19 on the mirror frame can be observed in a place with sufficient sunlight by rotating.

[0033] In addition to the above embodiments, the utility model can also have other implementation manners, and any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope required by the utility model.

Claims

1. An adjustable differential interference prism, comprising a fixed frame (1) and a lens (19), characterized in that: The fixing frame (1) has a hollow center to accommodate a lens (19), which is rectangular in shape. The fixing frame (1) is rectangular in shape as a whole, and the surface of the fixing frame (1) is parallel to the surface of the lens (19). A connecting plate (2) is provided near the bottom of the hollow center of the fixing frame (1). The connecting plate (2) is fixedly connected to the fixing frame (1). Several first screw rods (3) are provided between the connecting plate (2) and the lens (19). One end of the first screw rod (3) is fixedly connected to the connecting plate (2) by a thread. Next, the other end of the first lead screw (3) is attached to the lens (19); a differential interference prism (18) is provided on one vertical surface of the fixed frame (1); a second lead screw (5) is provided through the top of the fixed frame (1), the second lead screw (5) is connected to the fixed frame (1) by a thread, a turntable (6) is fixedly connected to one end of the second lead screw (5) away from the fixed frame (1), the other end of the second lead screw (5) is attached to the lens (19), the second lead screw (5) is set vertically, and the turntable (6) is set horizontally.

2. The adjustable differential interference prism according to claim 1, characterized in that: The fixing frame (1) is provided with several fixing rods (14) on the two sides of the differential interference prism (18) respectively. The fixing rods (14) are arranged vertically and arranged in an array along the horizontal direction. One end of the fixing rod (14) is fixedly connected to the fixing frame (1), and the other end is fixedly connected to the connecting sleeve (15). The connecting sleeve (15) is sleeved on the third lead screw (16) and connected to it by threads. One end of the third lead screw (16) is in contact with the lens (19), and the other end is fixedly connected to a disk.

3. The adjustable differential interference prism according to claim 2, characterized in that: A limiting frame (17) is provided between the third lead screw (16) and the lens (19); the limiting frame (17) is fixedly connected to the third lead screw (16).

4. The adjustable differential interference prism according to claim 3, characterized in that: The limiting frame (17) is L-shaped in general, and the two sides of the L-shape of the limiting frame (17) are respectively attached to the two surfaces of the lens (19) that are perpendicular to each other.

5. The adjustable differential interference prism according to claim 3, characterized in that: A protective pad (4) is provided between the first lead screw (3) and the lens (19).

6. The adjustable differential interference prism according to claim 3, characterized in that: The connecting plate (2) is fixedly connected to the fixing frame (1) by bolts. The connecting plate (2) has a protrusion on the side near the fixing frame (1). The fixing frame (1) has a groove at the corresponding position that matches the protrusion on the connecting plate (2). The connecting plate (2) and the fixing frame (1) are fixedly connected by a connector (10).

7. The adjustable differential interference prism according to claim 3, characterized in that: The second lead screw (5) is fixedly connected to a horizontally arranged mounting plate (7) at one end near the lens (19), and a positioning bead (8) is fixedly connected to the side of the mounting plate (7) away from the second lead screw (5).

8. The adjustable differential interference prism according to claim 3, characterized in that: A threaded sleeve (9) is fitted on the first lead screw (3), and the threaded sleeve (9) is connected to the first lead screw (3) by a thread.

9. The adjustable differential interference prism according to any one of claims 3 to 8, characterized in that: The bottom of the fixed frame (1) is provided with a support frame (11), and the bottom of the support frame (11) is provided with a support plate (12). The support frame (11) is detachably connected to the fixed frame (1) through several mounting brackets (13).

10. The adjustable differential interference prism according to claim 9, characterized in that: The mounting bracket (13) is L-shaped in general, and the two sides of the L-shape are detachably connected to the support frame (11) and the fixing frame (1) respectively.

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