Detection device for lens rotation position and projector lens device
A technology of rotating position and detecting device, applied in the field of projectors, can solve the problems of high cost and complex structure of the detecting device, and achieve the effect of simple structure and cost reduction.
Inactive Publication Date: 2019-09-20
QISDA OPTRONICS (SUZHOU) CO LTD +1
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] Therefore, the object of the present invention is to provide a detection device for the rotational position of the lens and a projector lens device, so as to solve the problems of complex structure and high cost of the detection device for the rotational position of the lens in the prior art.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0022] See Figure 1-Figure 2B , figure 1 FIG. 1 is a schematic diagram of the first embodiment of the detection device for the rotational position of the lens according to the present invention; Figure 2A with Figure 2B Shown are figure 1 Schematic diagram of the output levels of multiple carbon film printed circuits when the middle lens is rotated. The present invention provides a detection device for the rotational position of the lens. The lens 10 includes a lens body and a first lens barrel 20 . The first lens barrel 20 is rotatable, and the lens body is disposed in the first lens barrel 20 . The detection device includes a plurality of carbon film printed circuits, a ground conductor 6 and a control circuit 7. The present invention uses the detection device to include five carbon film printed circuits 1, 2, 3, 4, and 5 as an example for illustration, but does not invent It is not limited to this. The grounding conductor 6 is, for example, conductive foam, and the ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a detection device for a lens rotation position and a projector lens device. The detection device comprises a plurality of carbon film printed circuits, a grounding conductor and a control circuit. The plurality of carbon film printed circuits are sequentially arranged on the first lens cone along the optical axis direction of the lens, and each carbon film printed circuit respectively corresponds to one position where the lens rotates. In the rotating process of the first lens cone, the plurality of carbon film printed circuits are in contact with the grounding conductor in sequence, the output level of the carbon film printed circuits which are not in contact with the grounding conductor is a first level, and the output level of the carbon film printed circuits which are in contact with the grounding conductor is a second level. Each carbon film printed circuit is connected to the control circuit, and the control circuit judges the rotation position of the lens according to the change of the output level of the plurality of carbon film printed circuits. The invention can solve the problems of complex structure, too high cost and the like of the detection device for the lens rotation position in the prior art.
Description
technical field [0001] The invention relates to the technical field of projectors, in particular to a detection device for the rotational position of a lens and a projector lens device. Background technique [0002] At present, the motorized lenses of projectors on the market all use electric motors to drive gears to rotate the lenses. The rotation position is judged through the variable resistor, and the rotation position of the lens can be known through the change of the variable resistor, but this structure requires more mechanical structures and electronic detection circuits, and the cost is often high. Contents of the invention [0003] Therefore, the object of the present invention is to provide a detection device for the rotational position of the lens and a lens device for the projector, so as to solve the problems of the complex structure and high cost of the detection device for the rotational position of the lens in the prior art. [0004] To achieve the above ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H04N9/31
CPCH04N9/3141
Inventor 林志远
Owner QISDA OPTRONICS (SUZHOU) CO LTD