TWM566548U - Virtual projection vision inspection device operating with buttons - Google Patents

Abstract

The present invention relates to a virtual projection vision detecting device combined with a button operation, comprising a base combined with a reflecting plate, the reflecting plate forming an imaging surface and a virtual imaging area; a pattern generating unit comprising a lens unit and an image device; The imager is movable away from the lens unit, and the imager can generate a vision detection pattern to be reflected in the virtual imaging area; an operation unit controls the imager to generate and output the vision detection pattern; a button unit corresponds to The pointing direction of the vision detecting pattern is provided with at least one direction marking area and a rocker pointing to any of the direction marking areas, and the operation unit determines the direction marking area pointed by the rocker and the vision detecting pattern. Whether the direction of the indication matches. In order to judge whether the vision is normal.

Description

Virtual projection vision detecting device combined with button operation

The present invention relates to a virtual projection device that projects an image at a predetermined position through optical principles, thereby allowing the subject to perform vision detection within the shortest distance.

Due to the prevalence of today's 3C products, long-term use is likely to cause the user's vision to decline, so it is often necessary to perform visual acuity testing to correct vision. At present, most of the visual acuity tests are classified into mechanical measurement or manual measurement. The manual measurement mainly allows the test subject to be located outside a specified distance, and then the test subject provides a fixed-size visual acuity test chart, and the test subject identifies the pattern direction on the chart to determine the wait. The vision of the tester.

Therefore, the conventional vision detecting device requires a vision detecting chart to be fixed on the wall, and therefore cannot be arbitrarily moved, but must be detected at a fixed location. Moreover, since the person to be tested needs to be located at a specified distance between three and six meters, when performing vision detection, a considerable space and distance are required for the subject to perform vision detection. Moreover, it is necessary to manually discriminate the subject to indicate whether the direction of the visual acuity detection pattern is correct, and an error occurs, thereby causing considerable inconvenience in use.

Therefore, there is a patent of the "Improved Image Display System and Image Providing Device" of the Invention No. I521421, published on February 11, the Republic of China, which discloses that an image device is provided for display to a designated device, including a first communication unit; a processing unit coupled to the first communication unit; a storage unit coupled to the processing unit, the storage unit storing a first image data and an image required to execute an interactive program Correcting program data; wherein the calibration program data stores a code for execution by the processing unit for performing the following steps: controlling the first communication unit to connect with the designated device; and imaging the first image data according to a distance parameter Resizing to generate a second image data; and transmitting the second image data to the designated device for display by the first communication unit; wherein the distance parameter is a distance between the designated device and an interactive object The first image data and the second image data are corresponding to an optometry chart, and the display size of the second image data is based on the The first image data is subjected to image enlargement or image reduction adjustment according to the distance parameter. Therefore, the distance of the user can be detected, and the size of the pattern displayed on the display is adjusted according to the distances. The aforementioned distance detection system can be realized by the ranging unit.

However, the patent premise must rely on a distance measuring unit to detect the distance between the test subject and the test subject at any time, so the distance measuring unit needs to be prepared at any time, so the use is quite troublesome and inconvenient.

Accordingly, in view of the fact that the current vision detecting device has the above disadvantages. Therefore, the present invention provides a virtual projection vision detecting device combined with a button operation, which is provided with a base combined with a reflecting plate, the reflecting plate is formed with an imaging surface facing the base, and the back surface of the reflecting plate is formed with a virtual imaging. a pattern generating unit is disposed in the housing, the pattern generating unit includes a lens unit and an imager, and the imager is disposed at a moving distance from the lens unit, and the imager is capable of being opposite to the lens The unit moves to change the moving distance by the activity, and the imager can generate a vision detecting pattern, and project the vision detecting pattern on the lens unit, and then project the vision detecting pattern on the imaging surface via the lens unit. And then the vision detection pattern is reflected in the virtual imaging area; an operation unit is disposed in the base, the operation unit is connected to the imager, thereby controlling the imager to generate and output the vision detection pattern a button unit, the signal is connected to the operation unit, the button unit is a finger corresponding to the vision detection pattern The direction is provided with at least one direction marking area and a rocker. After the rocker points to any of the direction marking areas, a pointing signal is transmitted to the operation unit for comparison, and the operation unit determines that the joystick is pointed Whether the direction marking area matches the indicating direction of the vision detecting pattern.

Further, a mobile unit is disposed, the mobile unit is disposed in the base, and the mobile unit is connected to the computing unit for carrying the imager, and receives the control of the computing unit to drive the imager to move. The movement distance between the imager and the lens unit is changed, and the operation unit controls the imager to change the size of the vision detection pattern.

The mobile unit is a slide rail, a gear or an elevator.

The base is provided with a projection surface, and the reflector is pivotally connected to the base. The reflector can be pivoted at a 45-degree angle with respect to the projection surface.

The lens unit is a Finn lens or more than one lens group for bonding to the inside of the projection surface. The imager is 2D image, LCD projection, DLP projection, laser scanning projection, LCOS projection or 3D. image.

The above-mentioned vision detecting pattern is for generating a C-shape or an E-shape.

The distance between an eye of the subject and the imaging surface is defined as a visual distance, and an imaging distance is defined between the imaging surface and the virtual imaging region, and the visual distance and the imaging distance are used. Calculating the moving distance by using a calculation formula as the adjustment data of the moving distance, the calculation formula is ,among them Is the focal length of the lens unit, Is the moving distance, It is a vision detection distance equal to the visual distance plus the value of the imaging distance.

The button unit is connected to the operation unit by a wired or wireless signal.

The operation unit is configured to control the size of the vision detection pattern corresponding to the imager, and the operation unit is configured to control the imager to change the color depth of the vision detection pattern for detecting a vision contrast.

After receiving the pointing signal, the operation unit simultaneously projects and displays a pointing mark on the virtual imaging area.

The above technical features have the following advantages:

1. The distance can be detected according to different vision forces, and the automatic control adjustment can change the moving distance between the imager and the lens unit, and correspondingly change the size of the vision detecting pattern, so that the vision detecting pattern can be optically reflected The principle is reflected in the virtual imaging area, so that the detection picture under the actual vision detection distance can be simulated.

2. When performing visual acuity test, the test subject only needs to indicate the direction of the visual acuity detection pattern, and the rocker corresponding to the button unit is pointed to the direction mark area in any direction, and the direction of the indication of the visual acuity detection pattern is automatically compared. In order to judge whether the visual acuity of the test subject is normal, it is no longer necessary to manually identify the test subject to indicate whether the indication direction of the visual acuity detection pattern is correct, thereby making the visual acuity detection simpler, easier and correct without error. .

3. All components can be integrated into one base, which is easy to carry, easy to operate and has excellent maneuverability.

Referring to the first and second figures, the embodiment of the present invention includes: a base (1), a pattern generating unit (2), an arithmetic unit (3), a button unit (4), and a mobile unit (5). ),among them:

The base (1) is provided with a projection surface (11). The base (1) is coupled to a reflector (12) that is pivotally attached to the base (1). In use, the reflector (12) is relative to the projection The face (11) is pivoted at a 45 degree angle and then fixed. An imaging surface (13) is formed on the reflecting surface (11) toward the projection surface (11), and a virtual imaging area (14) is formed on the back surface of the reflection plate (12) at an appropriate distance.

The pattern generating unit (2) is disposed in the base (1). The pattern generating unit (2) includes a lens unit (21) and an imager (22). The lens unit (21) may be a Finn lens or more than one lens group for bonding to the inside of the projection surface (11); in the embodiment, the Finn lens is used, but not as any The limiting conditions are merely illustrative of the embodiment of the present embodiment. The imager (22) is disposed at a moving distance (S1) from the lens unit (21), and the imager (22) is movable relative to the lens unit (21), thereby being movable to change the moving distance (S1) . The imager (22) can be a 2D image, an LCD projection, a DLP projection, a laser scanning projection, an LCOS projection, and a 3D image, and can be used to generate a "C" or "E" shaped vision detection pattern ( twenty three). Further, the vision detecting pattern (23) is projected onto the lens unit (21), and the vision detecting pattern (23) is projected onto the imaging surface (13) of the reflecting plate (12) via the lens unit (21). The vision detection pattern (23) is then reflected within the virtual imaging zone (14).

As shown in the third and fourth figures, a subject (B) is at a fixed position (A), an eye of the subject (B) and the imaging surface of the reflector (11) ( The distance between 13) defines a visual distance (S2), and the appropriate distance between the imaging surface (13) and the virtual imaging area (14) is defined as an imaging distance (S3). By using a calculation formula, the value of the moving distance (S2) and the imaging distance (S3) can be used to calculate the value of the moving distance (S1) as the adjustment data of the moving distance (S1). The calculation formula is ,among them, Is the focal length of the lens unit (21), Is the moving distance (S1), It is a vision detection distance, that is, the value of the visual distance (S2) plus the imaging distance (S3).

The arithmetic unit (3) is disposed in the base (1). The arithmetic unit (3) is connected to the imager (22) to control the imager (22) to generate and output the vision detection pattern (23).

The button unit (4) is connected to the arithmetic unit (3) by a wired or wireless signal. The button unit (4) is provided with at least one direction marking area (41) and a rocker (42) corresponding to an indication direction of the vision detecting pattern (23). The embodiment is based on the vision detecting pattern (23). A plurality of the indication directions (including four indication directions of up, down, left, and right directions), and four direction indication zones (41) are provided. After the rocker (42) is turned to point to any of the direction marking areas (41), a pointing signal is transmitted to the arithmetic unit (3) for comparison. The operation unit (3) receives the pointing signal while projecting and displaying a pointing mark (D) on the virtual imaging area (14), and according to the direction marking area pointed by the rocker (42) (41) Aligning with the indication direction of the vision detection pattern (23) to determine whether the direction indication area (41) pointed by the rocker (42) matches the indication direction of the vision detection pattern (23) In order to judge whether the visual acuity of the test subject (B) is normal.

The mobile unit (5) is disposed in the base (1). The mobile unit (5) is connected to the operation unit (3) for carrying the imager (22), and receives the control of the operation unit (3), and drives the imager (22) to move, thereby changing The moving distance (S1) between the imager (22) and the lens unit (21), the moving unit (5) can be a slide rail, a gear or an elevator. When the moving distance (S1) is changed, the arithmetic unit (3) connected to the imager (22) performs an instant operation, and then transmits a signal to the imager (22), thereby allowing the imager ( 22) Appropriately changing the size of the vision detecting pattern (23), so that different vision detecting distances can be selected for the subject (B) to perform vision detection. The arithmetic unit (3) can also control the imager (22) to change the color depth of the vision detecting pattern (23), thereby detecting the visual contrast of the subject (B).

In use, as shown in the third and fourth figures, the reflector (12) can be fixed by pivoting the projection surface (11) of the base (1) by an angle of 45 degrees. Then, after the fixed position (A) is determined by the test subject (B), the distance between the fixed position (A) and the imaging surface (13) of the reflector (11) is known, so The value of the visual distance (S2) between the eye of the subject (B) and the imaging surface (13) is known. It is assumed that the focal length of the lens unit (21) is 20 units, the value of the visual distance (S2) is 30 units, and the required visual force detection distance is set to 60 units. Therefore, according to the above calculation formula, the above known values are substituted, so that the following calculation results can be obtained.

Therefore, the moving distance (S1) can be obtained. 〕=30 units; the distance of vision detection The value of the imaging distance (S3) is added to the visual distance (S2), so that the imaging distance (S3) can be determined to be 30 units.

Therefore, when the values of the moving distance (S1) and the imaging distance (S3) are obtained, the operation unit (3) controls the moving unit (5) to move the imager (22), thereby changing the imager (22). The moving distance (S1) between the lens unit (21) and the lens unit (21) is 30 units. When the moving distance (S1) is changed, an instant operation is performed through the arithmetic unit (3), and the signal is transmitted to the imager (22), thereby causing the imager (22) to appropriately change the vision. The pattern (23) is sized to be projected onto the virtual imaging area (14) having 30 units (imaging distance (S3)) from the imaging surface (13). Since the reflecting plate (12) projects the received vision detecting pattern (23) by the optical reflection principle, the focal length seen by the eye of the subject (B) is projected in the virtual imaging area (14). In one case, the subject (B) can be placed in a limited space with the shortest visible distance, so that the focal length of the user's eye is set at a predetermined position.

The eye of the subject (B) can be based on the pointing direction of the vision detecting pattern (23) projected on the virtual imaging area (14), and then the rocker of the button unit (4) is toggled (42) ) pointing to the direction marking area (41) corresponding to the pointing direction of the vision detecting pattern (23), the button unit (4) transmitting the pointing signal to the arithmetic unit (3) for comparison. The operation unit (3) receives the pointing signal while projecting and displaying a pointing mark (D) on the virtual imaging area (14), and is pointed according to the rocker (42) of the button unit (4). The direction marking area (41) is compared with the indicating direction of the vision detecting pattern (23) to determine the direction marking area (41) pointed by the rocker (42) and the vision detecting pattern (23) Whether the direction of the indication is consistent, thereby determining whether the vision of the subject (B) is normal.

In this way, the test subject (B) only needs to move the rocker (42) to point to the direction indication area (41) corresponding to the indication direction of the vision detection pattern (23), and it is no longer necessary to distinguish by human force. The test subject (B) indicates whether the direction of the indication of the vision detection pattern (23) is correct, which makes the vision detection more simple, easy and correct without error.

In view of the above description of the embodiments, the above-described embodiments are merely a preferred embodiment of the present invention, and the implementation of the present invention is not limited thereto. The scope, that is, the simple equivalent changes and modifications made in accordance with the scope of the patent application and the content of the creation of the creation, are within the scope of this creation.

(1) ‧‧‧ machine base
(11) ‧‧‧projection surface
(12) ‧‧‧reflector
(13)‧‧‧ imaging surface
(14)‧‧‧Virtual imaging area
(2) ‧‧‧ pattern generation unit
(21)‧‧‧ lens unit
(22)‧‧‧Imager
(23) ‧ ‧ Vision detection pattern
(3) ‧ ‧ arithmetic unit
(4) ‧‧‧ button unit
(41) ‧ ‧ direction marking area
(42) ‧‧‧ rocker
(5) ‧‧‧Mobile units
(A) ‧ ‧ fixed location
(B) ‧ ‧ testers
(D) ‧ ‧ pointing marks
(S1)‧‧‧Moving distance
(S2) ‧ ‧ visual distance
(S3)‧‧‧ imaging distance

[First figure] is a three-dimensional appearance solution of the present embodiment.

[Second diagram] is a schematic diagram of the construction of the present embodiment.

[Third image] is a schematic diagram of projecting a focused light source for the present embodiment.

[Fourth figure] is a schematic diagram of visual acuity detection for the present embodiment.

Claims (10)

A virtual projection visual acuity detecting device combined with a button operation, comprising: a base coupled with a reflecting plate, the reflecting plate is formed with an imaging surface facing the base, and a back surface of the reflecting plate is formed with a virtual imaging area; a pattern generating unit is disposed in the base, the pattern generating unit includes a lens unit and a mirror, the imager is disposed at a moving distance from the lens unit, and the imager is movable relative to the lens unit. By changing the moving distance by the activity, the imager can generate a vision detection pattern, and project the vision detection pattern on the lens unit, and then project the vision detection pattern on the imaging surface via the lens unit, and then make The vision detection pattern is reflected in the virtual imaging area; an operation unit is disposed in the base, and the operation unit is connected to the imager, so as to control the imager to generate and output the vision detection pattern; a unit, the signal is connected to the operation unit, and the button unit is set to an indication direction of the vision detection pattern The at least one direction marking area and a rocker are arranged. After the rocker points to any of the direction marking areas, a pointing signal is transmitted to the operation unit for comparison, and the operation unit determines that the joystick is pointed Whether the direction indication area matches the indication direction of the vision detection pattern. The virtual projection vision detecting device combined with the button operation described in claim 1 is further provided with a mobile unit, the mobile unit is disposed in the base, and the mobile unit is connected to the computing unit for carrying The imager is controlled by the operation unit to drive the imager to move, thereby changing the moving distance between the imager and the lens unit, and the operation unit controls the imager to change the vision detection pattern correspondingly. the size of. The virtual projection vision detecting device combined with the button operation as described in claim 2, wherein the mobile unit is a slide rail, a gear or a lift. The virtual projection visual acuity detecting device according to the first aspect of the invention, wherein the base is provided with a projection surface, the reflective plate is pivotally connected to the base, and the reflective plate is opposite to the projection surface. After pivoting at a 45 degree angle, it is fixed. The virtual projection visual acuity detecting device combined with the button operation as described in claim 4, wherein the lens unit is a fennel lens or a lens group for coupling to the inside of the projection surface, the image The device is 2D image, LCD projection, DLP projection, laser scanning projection, LCOS projection or 3D image. The virtual projection visual acuity detecting device combined with the button operation as described in claim 1, wherein the visual acuity detecting pattern is for generating a C-shape or an E-shape. The virtual projection visual acuity detecting device combined with the button operation as described in claim 1, wherein a distance between an eye of the subject and the imaging surface is defined as a visual distance, the imaging surface and the virtual imaging An imaging distance is defined between the regions, and the distance between the visual distance and the imaging distance is used to calculate the moving distance by using a calculation formula, which is used as the adjustment data of the moving distance, and the calculation formula is ,among them Is the focal length of the lens unit, Is the moving distance, It is a vision detection distance equal to the visual distance plus the value of the imaging distance. The virtual projection visual acuity detecting device combined with the button operation according to the first aspect of the patent application, wherein the button unit is connected to the arithmetic unit by a wired or wireless signal. The virtual projection visual acuity detecting device combined with the button operation as described in claim 1, wherein the computing unit is capable of controlling the imager to change the size of the visual acuity detection pattern, and the computing unit is capable of controlling the image changer. The vision detects the color depth of the pattern for detecting a vision contrast. The virtual projection visual acuity detecting device combined with the button operation as described in claim 1, wherein the arithmetic unit simultaneously displays and displays a pointing mark on the virtual imaging area after receiving the pointing signal.