CN100589023C - projection device - Google Patents

Abstract

The invention relates to a projection device, which comprises an optical machine device, wherein the optical machine device comprises an optical machine for providing an image and an optical machine fixing component, the optical machine fixing component is fixedly arranged on the optical machine, and the optical machine fixing component is provided with an inner adjusting screw hole in the Z-axis direction; the adjusting device comprises an adjusting frame, and the adjusting frame is provided with an external adjusting screw hole in the Z-axis direction; and an adjusting screw bolt screwed between the outer adjusting screw hole and the inner adjusting screw hole; the optical machine fixing component is pivotally connected with the adjusting frame, and when the adjusting screw rod is operated, the optical machine fixing component, the optical machine and the adjusting frame can perform displacement motion along the Z-axis direction; therefore, the optical machine has an adjusting mechanism, and the optical machine can ensure the correct focal length design value during the assembly, thereby improving the imaging quality of the projection device.

Description

projection device

【Technical field】

The present invention relates to a projection device, in particular to a projection device that can adjust the optical mechanism in the projection device to improve the focal length error and improve the projection quality.

【Background technique】

As shown in FIG. 1 , the image projection function of conventional projection device 90 mainly comes from an internal optical machine 91, which is fixed on a base 92, and then projects the image on a mirror or screen 93. . The optical machine 91 is a precision component, and has a certain focal length design value, but because the optical machine 91 itself is manufactured and assembled, often due to factors such as mechanism tolerance, assembly tolerance, optical tolerance or transportation process, the optical machine 91 The Z-axis position (the projection direction of the projection lens of the optical machine 91) produces a displacement change (that is, not on the design value), which in turn causes incorrect focal length and unclear images. And although the projection device will have other adjustment mechanisms to adjust the focal length or projection position after the optical machine is assembled, in the prior art, because the optical machine 91 itself is fixed on the base 92 and cannot be adjusted, resulting in The Z-axis projection focal length of the optical machine cannot be adjusted, so that the correct focal length design value of the optical machine itself cannot be implemented, which seriously affects the imaging quality of the projection equipment. Therefore, how to improve the design so that the optical machine itself has an adjustment function, thereby ensuring It has the precise quality foundation of the correct focal length design value when the projection equipment is assembled, and it is a key direction for the industry to make further efforts in research and development breakthroughs.

In view of the disadvantages of the above-mentioned projection device that its optics itself does not have an adjustment function and the fact that its structural design is not ideal, the inventor of this case started to develop and conceive its solution, hoping to develop a more adjustable and convenient operation. The optical machine adjusts the structure to serve the public and promote the development of this industry, and then the present invention is produced after a long time of conception.

【Content of invention】

The purpose of the present invention is to provide a projection device, which can make the optical machine itself have an adjustment mechanism, and ensure that the optical machine is at the correct focal length design value during assembly, thereby improving the imaging quality of the projection device.

Another object of the present invention is to provide a projection device, which can make the optical machine have excellent operability and convenience in adjusting the focal length, and further improve its assembly efficiency.

Another object of the present invention is to provide a projection device, which can adjust the projection setting position of the optical machine, thereby facilitating its assembly adjustment and improving the overall projection image quality.

In order to achieve the above-mentioned purpose, the projection device of the present invention includes: an optomechanical device, which includes an inner adjustment screw hole; and an adjustment device, which includes an adjustment frame and an adjustment screw, and an outer adjustment Screw hole, the adjusting screw rod is screwed between the outer adjusting screw hole and the inner adjusting screw hole; the optical-mechanical device is pivotally connected with the adjustment frame, and when the adjusting screw rod is operated, the optical-mechanical device can be made relative to the The adjusting frame is displaced along the axial direction of the adjusting screw.

The projection device of the present invention can make the optical machine itself have an adjustment mechanism, and ensure that the optical machine is located at the correct focal length design value during assembly, thereby improving the imaging quality of the projection device; it can also make the optical machine have an excellent focal length adjustment. The operability and convenience are improved, thereby improving its assembly efficiency; and the projection setting position of the optical machine can be adjusted, thereby facilitating its assembly adjustment and improving the overall projection imaging quality.

In order to have a further understanding and understanding of the technical characteristics and the achieved effects of the present invention, I would like to provide a better embodiment diagram and a detailed description, as follows:

【Description of drawings】

Fig. 1 is a schematic diagram of a conventional optical machine;

Fig. 2 is a combined schematic view of the projection device of the present invention;

3 is an exploded schematic view of the projection device of the present invention;

Fig. 4 is a combined sectional schematic view of the projection device of the present invention;

Fig. 5 is a combined cross-sectional schematic view of the projection device of the present invention;

FIG. 6 is a schematic cross-sectional view of a partial assembly of the projection device of the present invention;

【Detailed ways】

Please refer to Fig. 2, shown in 3 and 4, projection device of the present invention is to comprise an optical machine device 10 and adjusting device 30; There is a projection lens 12, and the projection direction of the projection lens 12 is defined as the Z-axis direction, which is used as a reference direction for focal length adjustment. The optical-mechanical fixing assembly 20 includes an optical-mechanical fixing frame 21 and an optical-mechanical fixing seat 22. The optical machine fixing frame 21 is fixed or screwed on the optical machine 11, and it includes a first fixing surface 211 perpendicular to the Z-axis direction and two second fixing surfaces 212 located on both sides of the first fixing surface 211. The first fixed surface 211 is provided with an internal adjustment screw hole 213. In a preferred implementation, the first fixed surface 211 is separated from the optical machine 11 by an appropriate distance A, and the second fixed surface 212 is convexly provided with a fixed Ears 214; the optical machine holder 22 is a slightly U-shaped frame body and is located at the rear and side positions of the optical machine 11; the optical machine holder 22 includes fixed mounts 221 on both sides, and the holder The frame 221 is provided with a protruding fixing plate 222, and the fixing plate 222 can be fixed with the fixing ear 214, such as screwing, riveting, etc., to connect the optical-mechanical fixing frame 21 and the optical-mechanical fixing seat 22, of course , the optical-mechanical fixing frame 21 and the optical-mechanical fixing seat 22 can also be added with a fixing mechanism at an appropriate position, for example: the screw joints (as shown in Figure 4) presented by the screws 321, 322, 323, and 324 are used for To increase the firmness of the connection, moreover, the fixing plate 222 is further provided with a pivot hole 223 , and in a preferred implementation, the optical machine fixing seat 22 and the optical machine 11 are separated by an appropriate distance.

The adjustment device 30 includes an adjustment frame 31 and an adjustment seat 32. The adjustment frame 31 includes a first adjustment surface 311 perpendicular to the Z-axis direction and two second adjustment surfaces 312 located on both sides of the first adjustment surface 311. The first adjustment surface 311 is provided with an outer adjustment screw hole 213, and an adjustment screw rod 314 is screwed between the outer and inner adjustment screw holes 313, 213 to form a screw adjustment mechanism; the second adjustment surface 312 is provided with a chute gap 315, and the front of the chute gap 315 is provided with a contact piece 316, and the contact piece 316 is provided with a positioning hole 317, and a tip rod 318 is pivotally arranged on the fixing plate. The pivot hole 223 of 222 is connected to the positioning hole 317. The tip rod 318 is sleeved with a spring 319, and the spring 319 is pressed against between the contact piece 316 and the fixing plate 222, and the fixing plate 222 is located at At the notch 315 of the sliding groove of the adjustment frame 31 , in other words, the optical-mechanical fixing assembly 20 is in a state of being pivotally connected with the adjustment frame 31 . Moreover, the rear of the adjustment frame 31 is solidified with the adjustment seat 32, such as screwing, riveting, etc., and the adjustment seat 32 is fixed on a frame (not shown), and the adjustment seat 32 is assembled. 32 and the rear of the fixing plate 222 may have an appropriate gap distance.

Please refer to Figures 5 and 6 together. When the projection device of the present invention adjusts the focal length of the optical machine 11, the adjustment screw 314 is rotated. The rotation of the adjustment screw 314 can cause the optical machine fixing frame 21 to generate an upward movement. , the action of the downward displacement, the optical machine fixing frame 21 and the optical machine 11 and the optical machine fixing seat 22 are integrally linked, so that the projection lens 12 of the optical machine 11 produces the effect of focal length adjustment.

As mentioned above, when the adjustment screw 314 is rotated to move the optical machine 11, the spring 319 will be compressed or stretched, and the spring 319 not only has the function of easing the operation of the adjustment screw 314, but also has the function of compensating the spring 319 The spiral clearance function between the outer adjustment screw hole 313 and the inner adjustment screw hole 213 makes the focus adjustment operation more precise and accurate. Furthermore, since the adjustment of the focal length of the optical machine 11 itself is a kind of fine-tuning, when the optical machine 11 is adjusted to move backward, the abutment of the bottom end of the tip rod 318 relative to the fixed plate 222 can be used as an end point, To limit or set the range of the optical machine 11 to adjust the displacement.

It is worth mentioning that in the present invention, when the combination of the adjustment screw 314 and the adjustment screw holes 213 and 313 of the optical-mechanical fixing frame 21 and the adjustment frame 31 is relatively located in the Z-axis direction, the focal length adjustment operation of the optical-mechanical 11 can be performed. When the combination of the adjusting screw 314 and the adjusting screw holes 213, 313 of the optical machine fixing frame 21 and the adjusting frame 31 is relatively located in other directions (such as the X or Y axis direction), the proper position adjustment of the optical machine 11 can be performed operation.

To sum up, the projection device of the present invention can achieve the effect of optical-mechanical Z-axis focal length adjustment when installed on the client side, and can effectively solve the problem that the optical-mechanical focal length is not in the design due to factors such as mechanism tolerance, assembly tolerance, optical tolerance, or transportation process. The lack of value, and then achieve the purpose of the invention to actively improve the projection quality, and the adjustment operation of the invention is quite simple and fast, which can be called an excellent invention with great benefit and practicability.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes and modifications made according to the present invention should be included in the protection scope of the present invention.

[Description of drawing number comparison]

Projection device 90 Optical machine 91

Base 92 Reflector or screen 93

Optomechanical device 10 Adjusting device 30

Optical machine 11 Optical machine fixing assembly 20

Projection lens 12 Optical machine fixing frame 21

Optical machine fixing seat 22 first fixing surface 211

The second fixed surface 212 inner adjustment screw hole 213

Fixed ear 214 Fixed seat frame 221

Fixed plate 222 Pivot hole 223

Adjustment frame 31 Adjustment seat 32

First adjustment surface 311 Second adjustment surface 312

External adjustment screw hole 213 Adjustment screw 314

Missing part of the chute 315 Arrival part 316

Positioning hole 317 Tip rod 318

Spring 319 Screws 321, 322, 323, 324

Claims (6)

1. projection arrangement includes:

One optical mechanical apparatus, be include adjust screw in one, a ray machine and is fixedly arranged on the ray machine fixation kit on this ray machine, wherein, this ray machine fixation kit includes one in order to the ray machine fixed mount of adjusting screw and one and the ray machine holder of this ray machine fixed mount concrete mutually to be set in this; And

One adjusting gear is to include an adjustment rack and to adjust screw rod, is to be provided with to adjust screw outside one on this adjustment rack, and this adjustment screw rod is to be bolted in this outer adjustment screw and interior the adjustment between screw;

This optical mechanical apparatus is and the binding that is articulated of this adjustment rack, can make this optical mechanical apparatus axially carry out the displacement start with respect to this adjustment rack along this adjustment screw rod when this adjustment screw rod of operation.

2. projection arrangement as claimed in claim 1 is characterized in that: this adjustment screw rod axially be the projecting direction that is parallel to a projection lens of this optical mechanical apparatus.

3. projection arrangement as claimed in claim 1 is characterized in that: this ray machine fixed mount be and this ray machine between be separated with a distance.

4. projection arrangement as claimed in claim 3 is characterized in that: this ray machine fixed mount convexes with a fixing ear, and this ray machine holder to be correspondence convex with fixed head, this fixed head and fixing ear concrete mutually.

5. projection arrangement as claimed in claim 4, it is characterized in that: this adjustment rack is to include a chute to lack portion, and this fixed head is to be positioned at this chute to lack the portion place, the place ahead that this chute lacks portion is provided with one to part, and this fixed head is pivoted with a tip bar, this tip bar is to be linked to the pilot hole that this supports part, and this tip bar is arranged with a spring, and this spring is resisted against this between part and this fixed head.

6. projection arrangement as claimed in claim 1 is characterized in that: this adjusting gear more include one with the adjustment seat of this adjustment rack concrete mutually.

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