Optical apparatus

Abstract

Disclosed is an optical apparatus including a display unit, a lens configured to pass an image formed by and transmitted from the display unit, a base configured to accommodate the lens therein, and an adjustment unit configured to move the lens relative to the base so as to adjust a path of light passing through the lens.

1 . An optical apparatus comprising:
 a display unit;   a lens configured to pass an image formed by and transmitted from the display unit;   a base configured to accommodate the lens therein; and   an adjustment unit configured to move the lens relative to the base so as to adjust a path of light passing through the lens.   
     
     
         2 . The optical apparatus according to  claim 1 , wherein the adjustment unit includes an adjustment lever having one end coupled to the lens and an opposite end exposed outside the base so as to allow a user to rotate the lens relative to the base by moving the opposite end. 
     
     
         3 . The optical apparatus according to  claim 2 , wherein at least a portion of the adjustment lever is exposed outside the base through a guide hole formed in the base, and
 wherein the adjustment lever remains stationary at a position, to which the adjustment lever is moved, in the guide hole when an outer circumferential surface of the adjustment lever comes into frictional contact with a surface of the guide hole.   
     
     
         4 . The optical apparatus according to  claim 2 , wherein at least a portion of the adjustment lever is exposed outside the base through a guide hole formed in the base, and
 wherein the adjustment lever has an outer circumferential surface configured to be engaged with a surface of the guide hole.   
     
     
         5 . The optical apparatus according to  claim 4 , wherein the adjustment lever includes:
 a gear having one side rotatably coupled to the lens and first teeth formed on an outer circumferential surface thereof; and   a gripper coupled to an opposite side of the gear and configured to rotate the gear.   
     
     
         6 . The optical apparatus according to  claim 4 , wherein the guide hole includes second teeth formed on at least a portion of the surface thereof so as to be engaged with the first teeth. 
     
     
         7 . The optical apparatus according to  claim 4 , wherein the lens includes a first protrusion formed on one side thereof so as to be coupled to the adjustment lever and a second protrusion formed on an opposite side thereof. 
     
     
         8 . The optical apparatus according to  claim 7 , wherein the base includes:
 a first indentation configured to accommodate at least a portion of the adjustment lever or the first protrusion therein, the first indentation communicating with the guide hole; and   a second indentation configured to accommodate at least a portion of the second protrusion therein.   
     
     
         9 . The optical apparatus according to  claim 8 , wherein the first indentation is provided with a filler formed of a flexible material, the filler surrounding at least a portion of the adjustment lever or the first protrusion. 
     
     
         10 . The optical apparatus according to  claim 8 , wherein the second indentation is provided with a third protrusion, an end of which comes into contact with the second protrusion so as to limit shaking of the lens. 
     
     
         11 . An optical apparatus comprising:
 a lens;   a base configured to accommodate the lens therein; and   an adjustment lever having one end coupled to the lens and an opposite end exposed outside the base, the adjustment lever being configured to adjust a path of light passing through the lens as a user moves the lens relative to the base by moving the opposite end.   
     
     
         12 . The optical apparatus according to  claim 11 , wherein at least a portion of the adjustment lever is exposed outside the base through a guide hole formed in the base, and
 wherein the adjustment lever has an outer circumferential surface configured to come into frictional contact with a surface of the guide hole.   
     
     
         13 . The optical apparatus according to  claim 11 , wherein the adjustment lever includes a gear having one side rotatably coupled to the lens and first teeth formed on an outer circumferential surface thereof, and a gripper coupled to an opposite side of the gear and configured to rotate the gear,
 wherein the base includes a guide hole provided on at least a portion of a surface thereof with second teeth configured to be engaged with the first teeth, and   wherein the user rotates the lens relative to the base by rotating the gripper.   
     
     
         14 . An optical apparatus comprising a housing configured to change a path of light of an image emitted from a display device so as to provide an observer with the resulting image,
 wherein the housing comprises:   a reflective surface configured to reflect light emitted from the display device; and   a mirror inclined relative to the reflective face by a prescribed angle so as to emit the light reflected from the reflective surface to an outside, and   wherein the housing has any one of a grating structure, a holographic optical element, and a moth eye structure.   
     
     
         15 . The optical apparatus according to  claim 14 , wherein the grating structure has a pitch, which is proportional to a wavelength of external light excluding the light emitted from the display device, and which is inversely proportional to a sine value of an angle of incidence of the external light. 
     
     
         16 . The optical apparatus according to  claim 14 , wherein the grating structure has a pitch formed as in the following Equation:
     P=λ/ 2sin θ
   here, P is the pitch, λ is the wavelength of external light, and θ is the angle of incidence of the external light.   
     
     
         17 . The optical apparatus according to  claim 14 , wherein the grating structure is a triangular grating structure. 
     
     
         18 . The optical apparatus according to  claim 14 , wherein the holographic optical element is formed of a transparent material, and includes a high refractive index material and a low refractive index material, which are alternately formed. 
     
     
         19 . The optical apparatus according to  claim 14 , wherein the holographic optical element is formed as in the following Equation:
     P=λ/ 2sin θ
   here, P is a pitch, λ is the wavelength of external light, and θ is the angle of incidence of the external light.   
     
     
         20 . The optical apparatus according to  claim 14 , wherein any one of the grating structure, the holographic optical element, and the moth eye structure is formed on all inclined surfaces, excluding a light introduction side and a light emission side of the housing, or is selectively formed on one or more surfaces among the inclined surfaces.