CN211147594U

CN211147594U - Off-axis optical projector

Info

Publication number: CN211147594U
Application number: CN201922060918.6U
Authority: CN
Inventors: 孙博; 王刚
Original assignee: XI'AN HANGGU MICROWAVE PHOTOELECTRIC TECHNOLOGY CO LTD
Current assignee: XI'AN HANGGU MICROWAVE PHOTOELECTRIC TECHNOLOGY CO LTD
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-07-31
Anticipated expiration: 2029-11-25

Abstract

The utility model relates to an optical projection technical field just discloses an off-axis formula optical projector. The utility model discloses a projecting screen is installed in the front of projecting screen main part, moving worktable and printing opacity tray, the projecting screen is installed in the front of projecting screen main part, and projects the surface mounting of screen and have the slide rail, the outside of slide rail is connected with the slider, and the top of slider is connected with the lens hood, moving worktable settles in the below of objective, and moving worktable's bottom surface installs the bracing piece, the lower extreme of bracing piece is connected with the piston, and has cup jointed sealed jar in the outside of piston, sealed jar's below is connected with the air pump, and the junction of air pump and sealed jar installs the connecting pipe, moving worktable's internally mounted has first well core rod, and first well core rod's outer wall is fixed with first toothed disc, the printing opacity tray is installed in first well core rod. The off-axis optical projector is beneficial to a user to adjust the shading position of the light shield according to the light irradiation condition in practical use.

Description

Off-axis optical projector

Technical Field

The utility model relates to an optical projection technical field specifically is an off-axis formula optical projector.

Background

The off-axis optical projector is a precision measuring instrument integrating light, mechanical, electrical and arithmetic, is widely applied to metering chambers and workshops of factories and mines related to the mechanical manufacturing industry, the instrument and meter industry, the clock industry, the electronic industry and the like, and can efficiently detect the outlines and surface shapes of various workpieces with complex shapes.

However, the position of the lens hood of the off-axis optical projector in the current market is fixed, the shading direction of the lens hood is difficult to change according to the incident angle of indoor ambient light, the workbench is not easy to rotate, the global image of the detected object is difficult to clearly master, and meanwhile, the distance between the workbench of the existing optical projector and the objective lens is usually adjusted manually, so that the problems of time and labor waste and inconvenient operation are solved.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is to solve the shortcoming that exists among the prior art, if: the position of a light shield of an off-axis optical projector in the current market is fixed, so that the light shielding direction of the light shield is difficult to change according to the incident angle of indoor ambient light; the workbench is not easy to rotate, and the global image of the detected object is difficult to clearly master; meanwhile, the distance between the workbench of the conventional optical projector and the objective lens is usually adjusted manually, so that the problems of time and labor waste and inconvenient operation are solved.

In order to achieve the above object, the utility model provides a following technical scheme: an off-axis optical projector comprises a projector main body, a movable workbench and a light-transmitting tray, wherein a projection screen is installed on the front surface of the projector main body, a slide rail is installed on the outer surface of the projection screen, a slide block is connected to the outer side of the slide rail, a light shield is connected to the upper side of the slide block, an objective lens is installed at the middle position below the projector main body, the movable workbench is arranged below the objective lens, a support rod is installed on the bottom surface of the movable workbench, a piston is connected to the lower end of the support rod, a sealing cylinder is sleeved on the outer side of the piston, an air pump is connected to the lower side of the sealing cylinder, a connecting pipe is installed at the connecting position of the air pump and the sealing cylinder, a first central rod is installed inside the movable workbench, a first gear disc is fixed on the outer wall of the first central rod, the light-transmitting tray is installed at the upper end, and a second central rod is fixed in the middle of the inner part of the second gear wheel disc, and a rotating handle is connected above the second central rod.

Preferably, the structure of the slide rail is an annular structure, the size of the slide rail is matched with that of the slider, and the light shield forms a sliding structure with the projection screen through the slide rail and the slider.

Preferably, the support rod penetrates through the sealing cylinder, and the support rod and the sealing cylinder form a telescopic structure through the piston.

Preferably, the air pump forms a communicating structure with the sealing cylinder through a connecting pipe, and the piston is tightly attached to the inner wall of the sealing cylinder.

Preferably, a bearing is installed at the joint of the first central rod and the movable workbench, and the light-transmitting tray forms a rotating structure with the movable workbench through the first central rod and the bearing.

Preferably, the horizontal center lines of the first gear disc and the second gear disc are overlapped, and the first gear disc and the second gear disc are connected in a meshing manner.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) The off-axis optical projector is provided with the sliding rail which is in a circular ring shape and surrounds the outer wall of the projection screen for a circle, so that the light shield can move along the outer edge of the projection screen by utilizing the sliding action between the sliding rail and the sliding block, and a user can adjust the shading position of the light shield according to the light irradiation condition in actual use, so that the shading position of the light shield is more accurate, and the shading effect is stronger;

(2) The utility model is provided with the connecting pipe to communicate the air pump and the sealing cylinder, and the lower part of the piston and the sealing cylinder form an airtight space, the air pump can change the air pressure change in the airtight space so as to drive the supporting rod to extend and contract in the sealing cylinder, and the whole process is controlled by electricity, thus solving the problem that the distance between the movable worktable of the existing optical projector and the objective needs to be manually adjusted, the operation is inconvenient, time and labor are saved, and the burden of workers is favorably lightened;

(3) The utility model discloses set up intermeshing between first toothed disc and the second toothed disc to the realization is rotated the transmission, is favorable to making the user through rotating the rotation of twist grip with regard to steerable printing opacity tray, is favorable to the user to come the more comprehensive clear view of being detected article, convenient and practical through rotatory printing opacity tray.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a right side view cross section of the light shield and projection screen of the present invention;

Fig. 3 is the schematic view of the installation cross section structure of the movable workbench and the light-transmitting tray of the present invention.

In the figure: 1. a projector main body; 2. a projection screen; 3. a slide rail; 4. a slider; 5. a light shield; 6. an objective lens; 7. moving the working table; 8. a support bar; 9. a piston; 10. sealing the cylinder; 11. an air pump; 12. a connecting pipe; 13. a first center bar; 14. a first gear plate; 15. a light-transmitting tray; 16. a second gear wheel disc; 17. a second center bar; 18. the handle is rotated.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: an off-axis optical projector comprises a projector body 1, a projection screen 2, a slide rail 3, a slide block 4, a light shield 5, an objective lens 6, a movable workbench 7, a support rod 8, a piston 9, a sealing cylinder 10, an air pump 11, a connecting pipe 12, a first central rod 13, a first gear plate 14, a light-transmitting tray 15, a second gear plate 16, a second central rod 17 and a rotating handle 18, wherein the projection screen 2 is arranged on the front surface of the projector body 1, the slide rail 3 is arranged on the outer surface of the projection screen 2, the slide block 4 is connected to the outer side of the slide rail 3, the light shield 5 is connected to the upper portion of the slide block 4, the slide rail 3 is of an annular structure, the slide rail 3 and the slide block 4 are matched in size, the light shield 5 forms a sliding structure with the projection screen 2 through the slide rail 3 and the slide block 4, the slide rail 3 is arranged in an annular shape and surrounds the, so that the light shield 5 can move along the outer edge of the projection screen 2 by utilizing the sliding action between the sliding rail 3 and the sliding block 4, the relative position of the light shield 5 and the projection screen 2 is changed, and a user can adjust the light shielding position of the light shield 5 according to the light irradiation condition in practical use, so that the light shielding position of the light shield 5 is more accurate, and the light shielding effect is stronger;

An objective lens 6 is installed at the middle position below the projector body 1, a movable workbench 7 is installed below the objective lens 6, a support rod 8 is installed at the bottom surface of the movable workbench 7, a piston 9 is connected to the lower end of the support rod 8, a sealing cylinder 10 is sleeved outside the piston 9, the support rod 8 penetrates through the sealing cylinder 10, a telescopic structure is formed between the piston 9 and the sealing cylinder 10 and the support rod 8 is arranged, the support rod 8 can move up and down in the sealing cylinder 10 in a telescopic manner, the top of the support rod 8 is fixed with the movable workbench 7, the movable workbench 7 can be driven to move up and down through the telescopic effect of the support rod 8, the distance between the movable workbench 7 and the objective lens 6 is effectively adjusted, a detected object can be conveniently observed by a user, an air pump 11 is connected below the sealing cylinder 10, and a connecting pipe 12 is installed at the joint of the air pump 11 and the, the air pump 11 forms a communicating structure with the sealing cylinder 10 through the connecting pipe 12, the piston 9 is tightly attached to the inner wall of the sealing cylinder 10, the connecting pipe 12 is arranged to communicate the air pump 11 with the sealing cylinder 10, a sealed space is formed between the lower part of the piston 9 and the sealing cylinder 10, the air pump 11 can change the air pressure change in the sealed space so as to drive the supporting rod 8 to stretch out and draw back in the sealing cylinder 10, the whole process is controlled by electricity, the problem that the distance between the moving workbench 7 of the existing optical projector and the objective lens 6 needs to be manually adjusted, the operation is inconvenient is solved, time and labor are saved, and the burden of workers is favorably relieved;

A first central rod 13 is arranged in the movable workbench 7, a first gear disc 14 is fixed on the outer wall of the first central rod 13, a light-transmitting tray 15 is arranged at the upper end of the first central rod 13, a bearing is arranged at the joint of the first central rod 13 and the movable workbench 7, the light-transmitting tray 15 forms a rotating structure with the movable workbench 7 through the first central rod 13 and the bearing, the light-transmitting tray 15 is embedded on the upper surface of the movable workbench 7, the bottom of the light-transmitting tray 15 is fixed with the first central rod 13, the first central rod 13 can rotate in the bearing, so that the light-transmitting tray 15 can be driven to rotate relative to the movable workbench 7, a user can more comprehensively and clearly check detected objects by rotating the light-transmitting tray 15, and the detection device is convenient and practical, a second gear disc 16 is arranged on the right side of the first gear disc 14, and a second central rod 17 is fixed at the middle position in the second gear disc 16, the top of the second center rod 17 is connected with a rotating handle 18, the horizontal center line of the first gear plate 14 and the second gear plate 16 coincides with each other, the connection mode between the first gear plate 14 and the second gear plate 16 is meshed and connected, and the first gear plate 14 and the second gear plate 16 are meshed and meshed with each other, so that the rotation transmission is realized, the rotation of the user with respect to the controllable light transmission tray 15 by rotating the rotating handle 18 is facilitated, and the use is more convenient.

In the utility model, when the user uses the device, firstly, the whole device is connected with an external power supply, then an object to be measured is placed on the transparent tray 15, then the height between the movable worktable 7 and the objective lens 6 is adjusted, the air pump 11 is started, the air pump 11 works to convey air to the inside of the closed space formed by the piston 9 and the sealed cylinder 10 through the connecting pipe 12, the air in the space is increased, the pressure is increased, the piston 9 is pushed by the air pressure to move upwards along the sealed cylinder 10, the piston 9 drives the supporting rod 8 to move upwards, the supporting rod 8 drives the movable worktable 7 to move upwards, the distance between the movable worktable 7 and the objective lens 6 is shortened, then the air pump 11 is closed, so that the movable worktable 7 is kept at the height, then the projector main body 1 is started, the objective lens 6 receives the irradiation light of the transparent tray 15, the light forms a shadow through the object to be measured, the light received by the objective lens 6 is processed by the optical, finally, a reflection image is formed and projected on the projection screen 2 for displaying;

Then according to when using this instrument, the incident direction of outdoor light, pulling lens hood 5, lens hood 5 drives slider 4 and slides along slide rail 3, lens hood 5 moves the position of suitable shading and carries out the shading, when different positions on the testee need to be observed, rotate the twist grip 18 earlier, twist grip 18 drives and drives second gear wheel dish 16 through second well core rod 17 and rotate, second gear wheel dish 16 and first gear wheel dish 14 intermeshing, drive first gear wheel dish 14 and rotate, first gear wheel dish 14 rethread first well core rod 13 drives printing opacity tray 15 rotatory, after printing opacity tray 15 is rotatory, just changed the relative position of testee and objective 6, just so accomplish the use of whole off-axis formula optical projector.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Claims

1. An off-axis optical projector comprising a projector main body (1), a movable table (7) and a light-transmitting tray (15), characterized in that: the front surface of the projector main body (1) is provided with a projection screen (2), the outer surface of the projection screen (2) is provided with a slide rail (3), the outer side of the slide rail (3) is connected with a slide block (4), the upper part of the slide block (4) is connected with a light shield (5), the lower middle position of the projector main body (1) is provided with an objective lens (6), the movable workbench (7) is arranged below the objective lens (6), the bottom surface of the movable workbench (7) is provided with a support rod (8), the lower end of the support rod (8) is connected with a piston (9), the outer side of the piston (9) is sleeved with a sealing cylinder (10), the lower part of the sealing cylinder (10) is connected with an air pump (11), the joint of the air pump (11) and the sealing cylinder (10) is provided with a connecting pipe (12), the inner part of the movable workbench (7) is, and the outer wall of first well core rod (13) is fixed with first toothed disc (14), the upper end in first well core rod (13) is installed in printing opacity tray (15), the right side of first toothed disc (14) is provided with second toothed disc (16), and the inside intermediate position of second toothed disc (16) is fixed with well core rod (17) of second, the top of well core rod (17) of second is connected with twist grip (18).

2. An off-axis optical projector as defined in claim 1 wherein: the structure of the sliding rail (3) is an annular structure, the sizes of the sliding rail (3) and the sliding block (4) are matched, and the light shield (5) forms a sliding structure with the projection screen (2) through the sliding rail (3) and the sliding block (4).

3. An off-axis optical projector as defined in claim 1 wherein: the support rod (8) penetrates through the sealing cylinder (10), and the support rod (8) forms a telescopic structure with the sealing cylinder (10) through the piston (9).

4. An off-axis optical projector as defined in claim 1 wherein: the air pump (11) is communicated with the sealing cylinder (10) through a connecting pipe (12), and the piston (9) is tightly attached to the inner wall of the sealing cylinder (10).

5. An off-axis optical projector as defined in claim 1 wherein: a bearing is installed at the joint of the first central rod (13) and the movable workbench (7), and the light-transmitting tray (15) forms a rotating structure with the movable workbench (7) through the first central rod (13) and the bearing.

6. An off-axis optical projector as defined in claim 1 wherein: the horizontal center lines of the first gear disc (14) and the second gear disc (16) are mutually overlapped, and the first gear disc (14) and the second gear disc (16) are connected in a meshing manner.