TWI616682B - Defogging method - Google Patents

Abstract

A defogging method is suitable for performing a defogging process on an image display device, which comprises the following steps. Detecting two lens temperature sensing values of the image display device and a facial temperature sensing value generated by the user after wearing the image display device. The lens temperature sensing value and the facial temperature sensing value are compared to produce a comparison result. Based on the comparison result, it is determined whether the two lens heaters on the image display device are respectively turned on to perform the defogging process.

Description

Defogging method

The present invention relates to a defogging method, and more particularly to a defogging method for performing a defogging process on an image display device.

At present, virtual reality technology has been gradually applied to consumer electronic products, such as virtual reality displays and virtual reality glasses. The virtual reality display itself is equipped with a display module and a dedicated lens to present a virtual reality image. The user's eyes can respectively view the virtual reality image displayed by the display of the portable device through a pair of lenses of the virtual reality glasses to obtain a three-dimensional visual experience. The current virtual reality glasses are usually designed with a head-mounted design to facilitate the user's hands-free and long-term wear. However, the virtual reality glasses with head-mounted design may cause fogging of the lens when the belt is worn for a long time or when the user actively sweats, thereby affecting the user's visual experience.

The invention provides a defogging method suitable for performing a defogging process on an image display device.

The defogging method of the present invention is suitable for performing a defogging process on an image display device, which comprises the following steps. Detecting two lens temperature sensing values of the image display device and a facial temperature sensing value generated by the user after wearing the image display device. The lens temperature sensing value and the facial temperature sensing value are compared to produce a comparison result. Based on the comparison result, it is determined whether the two lens heaters on the image display device are respectively turned on to perform the defogging process.

In an embodiment of the invention, when the comparison result is that at least one of the lens temperature sensing values is lower than the facial temperature sensing value, at least one of the lens heaters on the image display device is turned on to heat At least one of the two lenses of the image display device performs a defogging process.

In an embodiment of the invention, when the comparison result is that the lens temperature sensing value is equal to the facial temperature sensing value, the lens heater is turned off or not activated.

In an embodiment of the invention, the image display device is equipped with two lens temperature sensors, a face temperature sensor, and a lens heater. The lens temperature sensor senses the temperature of the two lenses and outputs the lens temperature sensing value. The face temperature sensor senses the temperature of the user's face and outputs a face temperature sensing value.

In an embodiment of the invention, the image display device further includes a first component, a second component, and a third component. The second component includes a lens and is located between the first component and the third component, and the lens temperature sensor, the facial temperature sensor, and the lens heater are respectively disposed on the second component. The lens temperature sensors are located next to the lenses. The lens heater is located between the lenses and is located opposite the lens temperature sensor. The face temperature sensor is located between the lenses.

In an embodiment of the invention, the facial temperature sensor is an infrared temperature sensor.

Based on the above, the defogging method of the present invention uses the lens temperature sensing value of the two lenses of the image display device and the size of the face temperature sensing value of the face after the user wears the image display device, and determines whether The lens heater is turned on to achieve the effect of defogging the lens by heating the lens.

The above described features and advantages of the invention will be apparent from the following description.

FIG. 1 is a schematic flow chart of a method for removing a fog by an image display device according to an embodiment of the invention. 2 is an exploded perspective view of an image display device according to an embodiment of the invention. Referring to FIG. 1 and FIG. 2 simultaneously, the defogging method of the present example is suitable for performing a defogging process on an image display device 100, wherein the image display device 100 is, for example, a virtual reality display, but is not limited thereto. .

As shown in FIG. 2, the image display device 100 includes a first component 110, a second component 120, and a third component 130. The second component 120 includes two lenses 140a, 140b and is located at the first component 110 and the third component. Between 130. The image display device 100 is equipped with two lens temperature sensors 150a, 150b, two lens heaters 160a, 160b, and a face temperature sensor 170. The lens temperature sensors 150a, 150b, the lens heaters 160a, 160b, and the face temperature sensor 170 are respectively disposed on the second member 120 and located on a surface of the second member 120 adjacent to the third member 130. The lens temperature sensors 150a, 150b are located adjacent the lenses 140a, 140b, respectively, and adjacent the opposite sides of the second component 120. Lens heaters 160a, 160b are located between lenses 140a, 140b and are located opposite lens temperature sensors 150a, 150b, respectively. Face temperature sensor 170 is located between lenses 140a, 140b.

Here, the lens temperature sensors 150a, 150b are adapted to sense the temperatures of the lenses 140a, 140b, respectively, and output two lens temperature sensing values. The lens temperature sensing values output by the lens temperature sensors 150a, 150b may be the same or different. The facial temperature sensor 170 is adapted to sense a user's facial temperature and output a facial temperature sensing value, wherein the facial temperature sensor 170 is, for example, an infrared temperature sensor, but does not Limited.

Referring to FIG. 1 and FIG. 2 simultaneously, first, in step S10, the lens temperature sensing value of the image display device 100 and the facial temperature sensing value generated by the user after wearing the image display device 100 are detected. When the user wears the image display device 100 on the head, a confined space is formed between the face and the display device 100, and the temperature in the confined space changes according to the user's active state. Further, during the process of using the image display device 100, the user may cause moisture in the body to evaporate through the skin of the face due to a large amount of movement or rapid heartbeat, and the relative humidity and temperature of the air in the sealed space may be improved after a long time of use. Finally, the internal air temperature in the confined space will be approximately equal to the temperature of the facial skin. The face temperature sensor 170 mounted on the image display device 100 can measure the temperature on the user's face through the infrared end, and can avoid the foreign body sensation caused by the contact temperature sensor to the user.

Next, in step S20, the lens temperature sensing value and the face temperature sensing value are compared to generate a comparison result.

Finally, in step S30, based on the comparison result, it is determined whether the lens heaters 160a, 160b on the image display device 100 are respectively turned on to perform the defogging process.

In detail, in step S32, if at least one of the lens temperature sensing values is lower than the facial temperature sensing value, at least one of the lens heaters 160a, 160b on the image display device 100 is turned on, The defogging process is performed by heating at least one of the lenses 140a, 140b of the image display device 100. That is to say, when the face of the user and the hot and humid air in the sealed space formed by the image display device 100 are in contact with the low temperature lens 140a (or 140b, or 140a and 140b), the comparison result is the lens temperature. The sensed value is lower than the facial temperature sensed value, and the more humidified air condenses, and the fogging is easily generated on the lens 140a (or 140b, or 140a and 140b). Thus, lens heaters 160a (or 140b, or 140a and 140b) of corresponding lenses 140a (or 140b, or 140a and 140b) are activated to heat lens 140a (or 140b, or 140a and 140b), while lens 140a (or 140b) The temperature of 140, or 140b) is increased as long as the temperature of the lens 140a (or 140b, or 140a and 140b) is increased to be comparable to the temperature of the skin of the face, that is, the effect of defogging is achieved.

In step S34, if the comparison result is that the lens temperature sensing value is equal to the facial temperature sensing value, the lens heaters 160a, 160b are turned off or not activated. That is to say, when the lens temperature sensing value is equal to the facial temperature sensing value, the lenses 160a, 160b will not have the problem of fogging and generating fog, so the lens heaters 160a, 160b may not be activated or turned off to avoid the lens. The temperature of 140a, 140b is too high to cause discomfort to the user.

In summary, the defogging method of the present invention uses the lens temperature sensing value of the two lenses of the image display device and the size of the face temperature sensing value of the face after the user wears the image display device. It is judged whether the lens heater is turned on to achieve the effect of defogging the lens by heating the lens.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

100‧‧‧Image display device

110‧‧‧ first part

120‧‧‧ second part

130‧‧‧ third part

140a, 140b‧‧‧ lenses

150a, 150b‧‧‧ lens temperature sensor

160a, 160b‧‧‧ lens temperature heater

170‧‧‧Face temperature sensor

S10, S20, S30, S32, S34‧‧ steps

FIG. 1 is a schematic flow chart of a method for removing a fog by an image display device according to an embodiment of the invention. 2 is an exploded perspective view of an image display device according to an embodiment of the invention.

Claims (5)

A defogging method is suitable for performing a defogging process on an image display device, the image display device is equipped with two lens temperature sensors, a face temperature sensor and two lens heaters, and the lens temperature sensing The device respectively senses the temperature of the two lenses and outputs two lens temperature sensing values, and the facial temperature sensor senses the temperature of a user's face and outputs a facial temperature sensing value, and the defogging method includes Detecting the lens temperature sensing values of the image display device and the facial temperature sensing value generated by the user after wearing the image display device; comparing the lens temperature sensing values with the facial temperature Sensing the values to generate a comparison result; and determining whether to turn on the lens heaters on the image display device to perform the defogging process according to the comparison result. The defogging method according to claim 1, wherein when the comparison result is that at least one of the lens temperature sensing values is lower than the facial temperature sensing value, the image display device is turned on. The defogging process is performed by at least one of the lens heaters for heating at least one of the two lenses of the image display device. The defogging method according to claim 1, wherein when the comparison result is that the lens temperature sensing values are equal to the facial temperature sensing value, the lens heaters are turned off or not activated. The defoggering method of claim 1, wherein the image display device further comprises a first component, a second component, and a third component, the second component comprising the lens and located in the first component Between the third component and the The lens temperature sensor, the facial temperature sensor and the lens heaters are respectively disposed on the second component, the lens temperature sensors are respectively located beside the lenses, and the lens heaters are located The lenses are located opposite each other of the lens temperature sensors, and the facial temperature sensor is located between the lenses. The defogging method according to claim 1, wherein the facial temperature sensor is an infrared temperature sensor.