Abstract: An optical apparatus 100 includes: a display 110 that outputs image light 50 for forming an image; an optical system 300 that magnifies the image, the optical system having a filter 320 (a reflective polarizing plate 321) and a lens 310 (a half mirror surface 311) that are arranged on an eye point side and a display side, respectively, on an optical axis L of the display 110, each of the lens and the filter transmitting or reflecting at least a part of the image light; and a moving device 410 that moves the filter along the optical axis with respect to the lens, the moving device including a first holder 440, a second holder 420, a cover 433, thereby making it possible to adjust a position of a magnified virtual image according to a diopter of a user.

Abstract: An optical device comprises: a transmittance changing unit that is provided in front of an eye of a user, and changes transmittance for light from the outside according to a voltage being applied; and a voltage control unit that controls a voltage to be applied to the transmittance changing unit by switching cyclically between a high voltage and a low voltage, wherein the voltage control unit switches the voltage at a cycle that is shorter than the sum of time required for transmittance of the transmittance changing unit to stabilize when changing from a minimum value to a maximum value by switching a voltage and time required for transmittance of the transmittance changing unit to stabilize when changing from a maximum value to a minimum value by switching a voltage.

Abstract: Conventional optical devices cannot cope with light entering from different directions in different light amounts. An optical device comprises: a transmittance changing unit that is provided in front of an eye of a user, and changes transmittance for light from the outside according to a voltage being applied; and a voltage control unit that controls a voltage to be applied to the transmittance changing unit, wherein by controlling the voltage, the voltage control unit switches between: a first relationship between frontal transmittance that is transmittance for light entering the transmittance changing unit from a frontal direction, and peripheral transmittance that is transmittance for light entering the transmittance changing unit from a direction inclined to the vertical direction relative to an entrance direction of light to which the frontal transmittance applies; and a second relationship between the frontal transmittance and the peripheral transmittance that is different from the first relationship.

Abstract: Conventional optical devices cannot cope with light entering from different directions in different light amounts. An optical device comprises: a transmittance changing unit that is provided in front of an eye of a user, and changes transmittance for light from the outside according to a voltage being applied; and a voltage control unit that controls a voltage to be applied to the transmittance changing unit, wherein by controlling the voltage, the voltage control unit switches between: a first relationship between frontal transmittance that is transmittance for light entering the transmittance changing unit from a frontal direction, and peripheral transmittance that is transmittance for light entering the transmittance changing unit from a direction inclined to the vertical direction relative to an entrance direction of light to which the frontal transmittance applies; and a second relationship between the frontal transmittance and the peripheral transmittance that is different from the first relationship.

Abstract: An optical device comprises: a transmittance changing unit that is provided in front of an eye of a user, and changes transmittance for light from the outside according to a voltage being applied; and a voltage control unit that controls a voltage to be applied to the transmittance changing unit by switching cyclically between a high voltage and a low voltage, wherein the voltage control unit switches the voltage at a cycle that is shorter than the sum of time required for transmittance of the transmittance changing unit to stabilize when changing from a minimum value to a maximum value by switching a voltage and time required for transmittance of the transmittance changing unit to stabilize when changing from a maximum value to a minimum value by switching a voltage.