CN113671715A - Liquid crystal film reading lamp with scale and control method thereof - Google Patents
Liquid crystal film reading lamp with scale and control method thereof Download PDFInfo
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- CN113671715A CN113671715A CN202110873769.4A CN202110873769A CN113671715A CN 113671715 A CN113671715 A CN 113671715A CN 202110873769 A CN202110873769 A CN 202110873769A CN 113671715 A CN113671715 A CN 113671715A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000005259 measurement Methods 0.000 claims abstract description 98
- 239000011521 glass Substances 0.000 claims abstract description 44
- 239000000758 substrate Substances 0.000 claims description 14
- 230000005684 electric field Effects 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 241000446313 Lamella Species 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010073767 Developmental hip dysplasia Diseases 0.000 description 1
- 208000007446 Hip Dislocation Diseases 0.000 description 1
- 210000000588 acetabulum Anatomy 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/02—Viewing or reading apparatus
- G02B27/022—Viewing apparatus
- G02B27/024—Viewing apparatus comprising a light source, e.g. for viewing photographic slides, X-ray transparancies
- G02B27/026—Viewing apparatus comprising a light source, e.g. for viewing photographic slides, X-ray transparancies and a display device, e.g. CRT, LCD, for adding markings or signs or to enhance the contrast of the viewed object
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/139—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
- G02F1/1396—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- Geometry (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a liquid crystal reading lamp with a scale and a control method thereof, the liquid crystal reading lamp comprises a frame, a light-emitting plate and a liquid crystal glass plate, the light-emitting plate and the liquid crystal glass plate are fixed in the frame in parallel, the liquid crystal glass plate comprises a surface polarizer layer, a bottom polarizer layer, a liquid crystal layer, a first electrode layer and a second electrode layer, the liquid crystal layer is positioned between the surface polarizer layer and the bottom polarizer layer, the first electrode layer is positioned between the surface polarizer layer and the liquid crystal layer, the second electrode layer is positioned between the bottom polarizer layer and the liquid crystal layer, and the first electrode layer and the second electrode layer are both provided with a length measuring electrode group and an angle measuring electrode group. The invention integrates the measurement representation and the film viewing lamp, adopts the TN type liquid crystal screen to display the length measurement scale and the angle measurement scale, and respectively controls the display of the length measurement and the angle measurement through the two control switches, when a doctor reads the film to be measured, the doctor does not need to search a measuring tool everywhere, and the invention has convenient and quick use and low manufacturing cost.
Description
Technical Field
The invention relates to a liquid crystal film reading lamp with a scale and a control method thereof, belonging to the technical field of medical auxiliary equipment.
Background
Reading lights are a device used by clinicians to read imaging films. Fluorescent lamps or LED lamps are usually used to provide a uniform and stable light source for the film reading board, and the light source passes through a black-and-white imaging film to increase the contrast of the film reading board so as to achieve the function of assisting the film reading. When a doctor reads a film, the size and the angle of the anatomical structure are usually one of the diagnostic bases. In order to judge the disease condition of the patient more accurately, the length or angle measurement of some parts on the film is needed, for example, the included angle between the perpendicular line of the femoral center and the outer edge of the acetabulum is needed to be measured in the orthopedic diagnosis of hip dysplasia. The existing method is that a doctor measures directly through a ruler, the method has higher requirements on the doctor during operation, and when the ruler cannot be kept parallel or vertical, a focus position cannot be accurately positioned, so that the condition of a patient is not conveniently analyzed.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a liquid crystal film reading lamp with a scale and a control method thereof, wherein the liquid crystal film reading lamp can directly display a length or angle measuring pattern, is convenient to use and has low manufacturing cost.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the utility model provides a take liquid crystal of scale to read piece lamp, includes frame, luminescent plate and liquid crystal glass board are fixed in the frame side by side, liquid crystal glass board is including a polarisation lamella, end polarisation lamella, liquid crystal layer, first electrode layer and second electrode layer, the liquid crystal layer is located between face polarisation lamella and the end polarisation lamella, first electrode layer is located between a polarisation lamella and the liquid crystal layer, the second electrode layer is located between end polarisation lamella and the liquid crystal layer, first electrode layer is equipped with first length measurement electrode group and first angle measurement electrode group, the second electrode layer is equipped with second length measurement electrode group and second angle measurement electrode group.
As a preferable scheme, the first length measuring electrode group and the second length measuring electrode group are arranged oppositely, and the first length measuring electrode group and the second length measuring electrode group are both arranged to form a length measuring scale mark; the first angle measurement electrode group and the second angle measurement electrode group are arranged oppositely, and angle measurement scale marks are arranged on both the first angle measurement electrode group and the second angle measurement electrode group.
Preferably, the liquid crystal glass plate further comprises a first substrate and a second substrate, the first substrate is located between the surface polarizer layer and the first electrode layer, and the second substrate is located between the bottom polarizer layer and the second electrode layer.
As a preferable scheme, the liquid crystal reading lamp with the ruler further comprises a first control switch, a second control switch and a power switch, the first length measurement electrode group and the second length measurement electrode group are connected with the first control switch, the first angle measurement electrode group and the second angle measurement electrode group are connected with the second control switch, and the first control switch, the second control switch and the light-emitting plate are all connected with the power switch.
As a preferred scheme, the liquid crystal reading lamp with the ruler further comprises a bottom plate and a light guide plate, wherein the bottom plate is fixed on one side of the frame, the light guide plate is fixed in the frame, the light emitting plate is located between the bottom plate and the light guide plate, and the light guide plate is located between the light emitting plate and the liquid crystal glass plate.
Preferably, the liquid crystal layer is a TN type liquid crystal layer.
The invention also provides a control method of the liquid crystal film reading lamp with the ruler, which comprises the following steps:
s1, turning on a power switch to electrify a light-emitting plate, wherein the light-emitting plate emits white light to penetrate through the liquid crystal glass plate to make the liquid crystal glass plate display white;
s2, turning on the first control switch to electrify the first length measurement electrode group and the second length measurement electrode group, so that the liquid crystal glass plate displays length measurement scale marks;
and S3, turning on a second control switch to electrify the first angle measurement electrode group and the second angle measurement electrode group, so that the liquid crystal glass plate displays angle measurement scale marks.
As a preferable scheme, the step S2 further includes: and turning on the first control switch to electrify the first length measuring electrode group and the second length measuring electrode group, and applying an electric field to the liquid crystal between the first length measuring electrode group and the second length measuring electrode group, so that the light-emitting plate emits white light which cannot penetrate through the liquid crystal glass plate between the first length measuring electrode group and the second length measuring electrode group, and the liquid crystal glass plate displays length measuring scale marks.
As a preferable scheme, the step S3 further includes: and turning on a second control switch to electrify the first angle measurement electrode group and the second angle measurement electrode group, and applying an electric field to liquid crystal between the first angle measurement electrode group and the second angle measurement electrode group, so that the light-emitting plate emits white light which cannot penetrate through the first angle measurement electrode group and the second angle measurement electrode group, and the liquid crystal glass plate displays angle measurement scale marks.
The invention has the beneficial effects that: compared with the prior art, the film viewer has the advantages that the measurement mark and the film viewing lamp are integrated, the TN type liquid crystal screen is adopted to display the length measurement scale and the angle measurement scale, the control is realized in a current and control switch mode, the display of the length measurement and the angle measurement is respectively controlled through the two control switches, when a doctor reads a film to be measured, the required length and angle data can be directly obtained according to the display, a measurement tool does not need to be searched everywhere, the use is very convenient and fast, the manufacturing cost is low, and the two control switches are closed when the measurement is not needed.
Drawings
FIG. 1 is a schematic structural diagram of a liquid crystal reading lamp with a ruler according to the present invention;
FIG. 2 is a schematic structural diagram of a liquid crystal glass plate of the liquid crystal slide reading lamp with a ruler in FIG. 1;
FIG. 3 is a layout view of a first length-measuring electrode set and a second length-measuring electrode set in accordance with the present invention;
fig. 4 is a layout diagram of a first angle measurement electrode set and a second angle measurement electrode set according to the present invention.
Detailed Description
The invention is explained in more detail below with reference to the drawings and examples.
Example 1
Fig. 1 to 4 schematically show a liquid crystal reading lamp with a scale according to the present invention.
Referring to fig. 1, a liquid crystal reading lamp with a ruler comprises a frame 1, a light-emitting plate 2, a liquid crystal glass plate 3, a first control switch 4, a second control switch 5, a power switch 6, a bottom plate 7 and a light guide plate 8. The light-emitting plate 2 and the liquid crystal glass plate 3 are fixed in the frame 1 in parallel. The bottom plate 7 is fixed on one side of the frame 1, the light guide plate 8 is fixed in the frame 1, the light emitting plate 2 is positioned between the bottom plate 7 and the light guide plate 8, and the light guide plate 8 is positioned between the light emitting plate 2 and the liquid crystal glass plate 5. A plurality of LED strips 21 are uniformly arranged on the light emitting plate 2, and the LED strips 21 are controlled by LED drivers. The first control switch 4, the second control switch 5 and the light-emitting plate 2 are all connected with the power switch 6, the power switch 6 is connected with an external power supply, and the power switch 6 controls the on-off of the whole device.
The edge of the junction of the electrochromic glass plate 5 and the frame 1 is provided with a clamping groove 11, the clamping groove 11 is used for inserting a film, and the edge of the clamping groove 11 can be provided with an elastic rubber surface so as to press the film.
Referring to fig. 2, the liquid crystal glass plate 3 includes a surface polarizer layer 31, a bottom polarizer layer 32, a liquid crystal layer 33, a first electrode layer 34, a second electrode layer 35, a first substrate 36, and a second substrate 37. The liquid crystal layer 33 is a TN type liquid crystal layer. The first substrate 36 and the second substrate 37 are transparent glass plates, the liquid crystal layer 33 is located between the surface polarizer layer 31 and the bottom polarizer layer 32, the first electrode layer 34 is located between the surface polarizer layer 31 and the liquid crystal layer 33, and the second electrode layer 35 is located between the bottom polarizer layer 32 and the liquid crystal layer 33. A first substrate 36 is positioned between the surface polarizer layer 31 and the first electrode layer 34, and a second substrate 37 is positioned between the bottom polarizer layer 32 and the second electrode layer 35.
The first electrode layer 34 is provided with a first length-measuring electrode group 341 and a first angle-measuring electrode group 351, and the electrodes of the overlapping portions of the first length-measuring electrode group 341 and the first angle-measuring electrode group 351 may be shared. The second electrode layer 35 is provided with a second length-measurement electrode group 342 and a second angle-measurement electrode group 352, and the electrodes of the middle overlapping portion of the second length-measurement electrode group 342 and the second angle-measurement electrode group 352 may be shared. The first and second length-measuring electrode sets 341 and 342 are connected to the first control switch 4, and the first and second angle-measuring electrode sets 351 and 352 are connected to the second control switch 5.
The first length measurement electrode group 341 and the second length measurement electrode group 342 are disposed opposite to each other, and the first length measurement electrode group 341 and the second length measurement electrode group 342 are arranged in length measurement scale marks having the same size and shape, as shown in fig. 3. The electrodes of the first length measuring electrode group 341 are connected together by leads and then connected to the first control switch 4 by a lead. The electrodes of the second length measurement electrode group 342 are connected together by leads and then connected to the first control switch 4 by wires. The first control switch 4 controls the power on/off of the first length measuring electrode group 341 and the second length measuring electrode group 342, when the power switch 6 is turned on and the first control switch 4 is turned on, the first length measuring electrode group 341 and the second length measuring electrode group 342 are energized, an electric field is added to the liquid crystal between the first length measuring electrode group 341 and the second length measuring electrode group 342, so that the liquid crystal molecules push the optical rotation, and the light emitted by the light emitting panel 2 cannot penetrate through the liquid crystal glass plate 3, so that the length measuring scale marks are displayed on the liquid crystal glass plate 3. The first angle measurement electrode group 351 and the second angle measurement electrode group 352 are disposed to face each other, and the first angle measurement electrode group 351 and the second angle measurement electrode group 352 are arranged in a pattern of angle measurement scale marks having the same size and shape, as shown in fig. 4. The first and second angle-measuring electrode groups 351 and 352 have the same structural principles and connection principles with the second control switch 5 as the first and second length-measuring electrode groups 341 and 342.
Example 2
The method for controlling the liquid crystal reading lamp with the ruler in the embodiment 1 comprises the following steps:
s1, turning on the power switch 6 to electrify the light-emitting panel 2, and enabling the light-emitting panel 2 to emit white light to penetrate through the liquid crystal glass plate 3 to enable the liquid crystal glass plate 3 to display white; at this time, the film is inserted into the card slot 11 so that the film is adhered to the outside of the liquid crystal glass plate 3, and the film can be viewed.
S2, when the length of the film needs to be measured, the first control switch 4 is turned on to energize the first length measuring electrode group 341 and the second length measuring electrode group 342, so that the liquid crystal glass plate 3 displays the length measuring scale marks;
when the first control switch 4 is turned on to energize the first length-measuring electrode group 341 and the second length-measuring electrode group 342, an electric field is applied to the liquid crystal between the first length-measuring electrode group 341 and the second length-measuring electrode group 342, so that the liquid crystal between the first length-measuring electrode group 341 and the second length-measuring electrode group 342 loses optical rotation, and the light emitted from the light-emitting panel 2 cannot penetrate through the liquid crystal glass plate 3, so that the liquid crystal glass plate 3 displays a length-measuring scale mark.
S3, when the angle of the film needs to be measured, the second control switch 5 is turned on to energize the first angle measurement electrode set 351 and the second angle measurement electrode set 352, so that the liquid crystal glass panel 3 displays the angle measurement scale marks.
When the second control switch 5 is turned on to energize the first angle measurement electrode group 351 and the second angle measurement electrode group 352, an electric field is applied to the liquid crystal between the first angle measurement electrode group 351 and the second angle measurement electrode group 352, so that the optical rotation of the liquid crystal between the first angle measurement electrode group 351 and the second angle measurement electrode group 352 is lost, and the light emitting panel 2 emits light which cannot penetrate through the liquid crystal glass plate 3, so that the liquid crystal glass plate 3 displays an angle measurement scale mark.
The above steps S2 and S3 are applied, respectively, to implement step S2 when it is necessary to use the length measurement scale markings and to implement step S3 when it is necessary to use the angle measurement scale markings.
The display module adopts the structure of a TN-LCD black-and-white liquid crystal screen, and has the advantages of simple structure, low manufacturing cost and less energy consumption. The liquid crystal display is designed to be Normally White (NW), that is, when no electric field is applied, liquid crystal molecules have optical rotation property, so that light can rotate just by passing through two non-parallel polarizing plates, and when the electric field loses optical rotation property, the light cannot pass through the two non-parallel polarizing plates. The pixels adopt square single-color squares, and the dot pitch is below 0.5 mm. The electrodes may be arranged in a grid pattern perpendicular to each other. When the measurement is not needed, the switches for displaying and hiding the two control scales are both closed, the same common film viewer is used, when the length is required to be measured, the switches for displaying and hiding the control length scales are opened, the length scales display, when the angle is required to be measured, the switches for displaying and hiding the control angle scales are opened, and the angle scales display.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept herein, and it is intended to cover all such modifications and variations as fall within the scope of the invention.
Claims (9)
1. The liquid crystal reading lamp with the ruler is characterized by comprising a frame (1), a light-emitting plate (2) and a liquid crystal glass plate (3), wherein the light-emitting plate (2) and the liquid crystal glass plate (3) are fixed in the frame (1) in parallel; the liquid crystal glass plate (3) comprises a surface polarizer layer (31), a bottom polarizer layer (32), a liquid crystal layer (33), a first electrode layer (34) and a second electrode layer (35), wherein the liquid crystal layer (33) is positioned between the surface polarizer layer (31) and the bottom polarizer layer (32), the first electrode layer (34) is positioned between the surface polarizer layer (31) and the liquid crystal layer (33), and the second electrode layer (35) is positioned between the bottom polarizer layer (32) and the liquid crystal layer (33); the first electrode layer (34) is provided with a first length measuring electrode group (341) and a first angle measuring electrode group (351), and the second electrode layer (35) is provided with a second length measuring electrode group (342) and a second angle measuring electrode group (352).
2. The liquid crystal reading lamp with the ruler according to claim 1, wherein the first length measuring electrode group (341) and the second length measuring electrode group (342) are disposed opposite to each other, and the first length measuring electrode group (341) and the second length measuring electrode group (342) are arranged as length measuring scale marks; the first angle measurement electrode group (351) and the second angle measurement electrode group (352) are oppositely arranged, and the first angle measurement electrode group (351) and the second angle measurement electrode group (352) are arranged with angle measurement scale marks.
3. The liquid crystal reading lamp with the ruler of claim 1, wherein the liquid crystal glass plate (3) further comprises a first substrate (36) and a second substrate (37); the first substrate (36) is located between the surface polarizer layer (31) and the first electrode layer (34), and the second substrate (37) is located between the bottom polarizer layer (32) and the second electrode layer (35).
4. The liquid crystal reading lamp with the ruler according to claim 2, further comprising a first control switch (4), a second control switch (5) and a power switch (6), wherein the first length measurement electrode group (341) and the second length measurement electrode group (342) are connected with the first control switch (4), the first angle measurement electrode group (351) and the second angle measurement electrode group (352) are connected with the second control switch (5), and the first control switch (4), the second control switch (5) and the light emitting plate (2) are connected with the power switch (6).
5. The liquid crystal reading lamp with the ruler as claimed in any one of claims 1-4, further comprising a bottom plate (7) and a light guide plate (8), wherein the bottom plate (7) is fixed on one side of the frame (1), the light guide plate (8) is fixed in the frame (1), the light emitting plate (2) is located between the bottom plate (7) and the light guide plate (8), and the light guide plate (8) is located between the light emitting plate (2) and the liquid crystal glass plate (5).
6. The liquid crystal reading lamp with the ruler of claim 1, wherein the liquid crystal layer (33) is a TN type liquid crystal layer.
7. A control method of a liquid crystal reading lamp with a scale is characterized by comprising the following steps:
s1, turning on a power switch (6) to electrify the light-emitting plate (2), wherein the light-emitting plate (2) emits white light to penetrate through the liquid crystal glass plate (3) to enable the liquid crystal glass plate (3) to display white;
s2, turning on a first control switch (4), and electrifying the first length measurement electrode group (341) and the second length measurement electrode group (342) to enable the liquid crystal glass plate (3) to display length measurement scale marks;
and S3, turning on a second control switch (5), and electrifying the first angle measurement electrode group (351) and the second angle measurement electrode group (352) to enable the liquid crystal glass plate (3) to display angle measurement scale marks.
8. The method for controlling a liquid crystal reading lamp with a ruler according to claim 7, wherein the step S2 further comprises: and turning on a first control switch (4) to electrify the first length measurement electrode group (341) and the second length measurement electrode group (342), and applying an electric field to liquid crystal between the first length measurement electrode group (341) and the second length measurement electrode group (342) to enable the light-emitting plate (2) to emit white light which cannot penetrate through the liquid crystal glass plate (3) between the first length measurement electrode group (341) and the second length measurement electrode group (342) so as to enable the liquid crystal glass plate (3) to display length measurement scale marks.
9. The method for controlling a liquid crystal reading lamp with a ruler according to claim 7, wherein the step S3 further comprises: and turning on a second control switch (5) to electrify the first angle measurement electrode group (351) and the second angle measurement electrode group (352), and applying an electric field to liquid crystal between the first angle measurement electrode group (351) and the second angle measurement electrode group (352), so that the light-emitting plate (2) emits white light which cannot penetrate through the first angle measurement electrode group (351) and the second angle measurement electrode group (352), and the liquid crystal glass plate (3) displays angle measurement scale marks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110873769.4A CN113671715A (en) | 2021-07-30 | 2021-07-30 | Liquid crystal film reading lamp with scale and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110873769.4A CN113671715A (en) | 2021-07-30 | 2021-07-30 | Liquid crystal film reading lamp with scale and control method thereof |
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Citations (8)
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| JPH074901A (en) * | 1993-05-31 | 1995-01-10 | Keibunshiya:Kk | Liquid crystal ruler |
| JPH11211402A (en) * | 1998-01-21 | 1999-08-06 | Sharp Corp | Electronic ruler |
| KR20030058331A (en) * | 2001-12-31 | 2003-07-07 | 엘지.필립스 엘시디 주식회사 | A scaling bar to masure of distance between inside key and outer key |
| CN1988603A (en) * | 2006-12-30 | 2007-06-27 | 华中科技大学 | Computer auxiliary medical image observing system |
| CN201335914Y (en) * | 2009-01-06 | 2009-10-28 | 曾腾辉 | Electronic liquid crystal film reading device |
| CN205403658U (en) * | 2016-02-29 | 2016-07-27 | 杨笑 | X line piece dipperstick with different engineer's scale scales and angle scale |
| CN206470483U (en) * | 2016-12-14 | 2017-09-05 | 袁立军 | A kind of dept. of radiology's viewing equipment |
| CN112331309A (en) * | 2020-10-29 | 2021-02-05 | 武汉联影医疗科技有限公司 | Medical image film reading device and medical image film reading system |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH074901A (en) * | 1993-05-31 | 1995-01-10 | Keibunshiya:Kk | Liquid crystal ruler |
| JPH11211402A (en) * | 1998-01-21 | 1999-08-06 | Sharp Corp | Electronic ruler |
| KR20030058331A (en) * | 2001-12-31 | 2003-07-07 | 엘지.필립스 엘시디 주식회사 | A scaling bar to masure of distance between inside key and outer key |
| CN1988603A (en) * | 2006-12-30 | 2007-06-27 | 华中科技大学 | Computer auxiliary medical image observing system |
| CN201335914Y (en) * | 2009-01-06 | 2009-10-28 | 曾腾辉 | Electronic liquid crystal film reading device |
| CN205403658U (en) * | 2016-02-29 | 2016-07-27 | 杨笑 | X line piece dipperstick with different engineer's scale scales and angle scale |
| CN206470483U (en) * | 2016-12-14 | 2017-09-05 | 袁立军 | A kind of dept. of radiology's viewing equipment |
| CN112331309A (en) * | 2020-10-29 | 2021-02-05 | 武汉联影医疗科技有限公司 | Medical image film reading device and medical image film reading system |
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