1. An apparatus comprising:
a pole-engaging element configured to releasably retain the element in a predetermined position on a pole;
a shelf that is coupled to the pole using the pole-engaging element;
wherein the pole-engaging element is at least partially integral with the shelf when the shelf is coupled to the pole; and
an instruction associated with at least one of the pole engaging element and the shelf, wherein the instruction provides information to couple the pole-engaging element to the pole.
2. The apparatus of claim 1 wherein the pole is a lamp post.
3. The apparatus of claim 2 wherein the pole-engaging element is configured to split into a first portion that is separate from a second portion.
4. The apparatus of claim 3 wherein the first and second portions have a cutout that form a channel sized and dimensioned to accommodate the lamp post.
5. The apparatus of claim 2 wherein the shelf has an upper surface and a lower surface, wherein the lower surface has a recessed area that receives at least part of the pole-engaging element when the shelf is coupled to the lamp post.
6. The apparatus of claim 3 wherein the shelf is configured to split into a first portion that is separate from a second portion, and first and second portions have a cutout that form a channel sized and dimensioned to accommodate the lamp post.
7. The apparatus of claim 6 wherein each of the shelf portions has an upper surface and a lower surface, and wherein each of the lower surfaces has a recessed area that receives at least part of the pole-engaging element when the shelf is coupled to the lamp post.
8. The apparatus of claim 6 wherein each of the shelf portions has an upper surface and a lower surface, and wherein each of the shelf portions has an opening between the upper and lower surface that receives at least part of the pole-engaging element when the shelf is coupled to the lamp post.
9. The apparatus of claim 2 wherein the pole-engaging element has a first element with a threaded portion that is configured to threadably receive a first and a second section of the lamp post, and a second element that is configured to couple with the shelf.
10. The apparatus of claim 9 wherein the pole-engaging element has an opening configured to allow passage of an electrical wire from a location outside of the first element to a location inside of the first element.
11. An apparatus comprising:
a shelf having a first and a second portion, wherein each of the first and second portions include a cutout, and wherein the cutouts of the first and second portions form a channel when the first and second portions are proximal to each other;
a pole-engaging element configured to releasably retain the element in a predetermined position on a pole, and further configured to releasably retain at least one of the first and second portions; and
wherein the pole-engaging element is at least partially integral with the shelf when the shelf is coupled to the pole.
12. The apparatus of claim 11 wherein the pole comprises a lamp post.
13. The apparatus of claim 12 further comprising an instruction to couple the apparatus to the lamp post.
14. The apparatus of claim 11 wherein the pole-engaging element is configured to split into a first portion that is separate from a second portion.
15. A lamp comprising:
a base coupled to one end of a lamp post, and a light source coupled to another end of the lamp post;
a pole-engaging element that is configured to retain the element in a predetermined and optionally releasable position on the lamp post between the base and the light source;
a functional device selected from the group consisting of a shelf, an audio device, and a display device, wherein the functional device is coupled to the lamp post using the pole-engaging element;
wherein the pole-engaging element is at least partially integral with the functional device when the device is the shelf and coupled to’the lamp post; and
wherein the pole-engaging element movably couples the functional device to the lamp post when the device is the audio device or the display device.
16. The lamp of claim 15 wherein the pole-engaging element is a brace that is configured to split into a first portion that is separate from a second portion.
17. The lamp of claim 16 wherein the shelf is configured to split into a first portion that is separate from a second portion, and wherein each brace portion is at least partially embedded with in each shelf portion, respectively.
18. The lamp of claim 15 wherein the pole-engaging element comprises a first element with a threaded portion that is configured to threadably receive a first and a second section of the lamp post, and a second element that is configured to couple with at least one of the shelf, the audio device, and the display device.
19. The lamp of claim 15, wherein the shelf is configured to split into a first portion that is separate from a second portion, and wherein the pole-engaging element comprises a first and second pin that releasably couples to the first and second portion, respectively.
20. The lamp of claim 19 wherein the first pin of the first portion is positioned such that the first pin is received by an opening in the second portion of the shelf, and wherein the second pin of the second portion is positioned such that the second pin is received by an opening in the first portion of the shelf.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A device for regulating a light source of a position-measuring unit, comprising:
a measuring standard device movable relative to the light source;
a plurality of photodetectors configured to convert light emitted by the light source into photocurrents, the photocurrent of at least one photodetector usable to form an actual value, photodetectors arranged to convert light modulated by at least a partial number of the photodetectors into position-dependent photocurrents;
a device configured to generate a setpoint value based on a vector length of the position-dependent photocurrents; and
a comparator, in a control circuit for regulating an intensity of the light source, configured to compare the actual value and the setpoint value to generate a system deviation based on photocurrents.
2. The position-measuring unit according to claim 1, wherein the device configured to generate the setpoint value includes a calculation module configured to form the vector length.
3. The position-measuring unit according to claim 1, wherein the device configured to generate the setpoint value includes an analog-to-digital converter configured to digitize signals that are based on the position-dependent photocurrents.
4. The position-measuring unit according to claim 3, wherein the device configured to generate the setpoint value includes a digital-to-analog converter configured to provide an analog setpoint value.
5. The position-measuring unit according to claim 1, wherein the photodetectors and the device configured to generate the setpoint value are integrated in a semiconductor element.
6. A device for regulating a light source of a position-measuring unit, comprising:
a measuring standard device movable relative to the light source;
a plurality of photodetectors positioned to convert light modulated by the measuring standard device to position-dependent photocurrents, the position-dependent photocurrent of at least one photodetector usable to form an actual value;
a device configured to generate a setpoint value based on a vector length of the position-dependent photocurrents; and
a comparator, in a control circuit for regulating an intensity of the light source, configured to compare the actual value and the setpoint value to generate a system deviation based on photocurrents.
7. The position-measuring unit according to claim 6, wherein the device configured to generate the setpoint value includes a calculation module configured to form the vector length.
8. The position-measuring unit according to claim 6, wherein the device configured to generate the setpoint value includes an analog-to-digital converter configured to digitize signals that are based on the position-dependent photocurrents.
9. The position-measuring unit according to claim 8, wherein the device configured to generate the setpoint value includes a digital-to-analog converter configured to provide an analog setpoint value.
10. The position-measuring unit according to claim 6, wherein the photodetectors and the device configured to generate the setpoint value are integrated in a semiconductor element.
11. A device for regulating a light source of a position-measuring unit, comprising:
a measuring standard device movable relative to the light source;
a plurality of photodetectors arranged to convert light modulated by the measuring standard device into position-dependent photocurrents;
a photodetector configured to convert light emitted by the light source to a position-independent photocurrent usable to form an actual value;
a device configured to generate a setpoint value based on a vector length of the position-dependent photocurrents; and
a comparator, in a control circuit for regulating an intensity of the light source, configured to compare the actual value and the setpoint value to generate a system deviation based on photocurrents.
12. The position-measuring unit according to claim 11, wherein the device configured to generate the setpoint value includes a calculation module configured to form the vector length.
13. The position-measuring unit according to claim 11, wherein the device configured to generate the setpoint value includes an analog-to-digital converter configured to digitize signals that are based on the position-dependent photocurrents.
14. The position-measuring unit according to claim 13, wherein the device configured to generate the setpoint value includes a digital-to-analog converter configured to provide an analog setpoint value.
15. The position-measuring unit according to claim 11, wherein the photodetectors and the device configured to generate the setpoint value are integrated in a semiconductor element.
16. A method for regulating a light source of a position-measuring unit, comprising:
converting light emitted from the light source by photodetectors into photocurrents, at least one part of the emitted light modulated by a measuring standard device movable relative to the light source to generate position-dependent photocurrents by the modulated light and based on at least a partial number of the photodetectors;
generating an actual value based on at least one of the photocurrents;
generating a setpoint value based on a vector length of the position-dependent photocurrents; and
comparing, in a control circuit for regulating an intensity of the light source, the actual value to the setpoint value to generate a system deviation based on photocurrents.
17. The method according to claim 16, wherein the actual value is generated in the actual value generating step by an analog method.
18. The method according to claim 16, wherein the actual value is generated in the actual value generating step based on a sum of the photocurrents.
19. The method according to claim 16, wherein the setpoint value generating step includes digitizing electrical signals that are based on the position-depending photocurrents.
20. The method according to claim 16, wherein the setpoint value generating step includes forming the vector length.
21. The method according to claim 20, further comprising:
comparing the vector length to a predefined value of a setpoint vector length; and
changing the setpoint value until a difference between the vector length and the setpoint vector length is between predefined limits.
22. The method according to claim 19, wherein the setpoint value generating step includes performing a digital-to-analog conversion of digitized values after the digitizing step and after further processing to generate the setpoint value.