Optical system, display apparatus, and image pickup apparatus

An optical system configured to guide an image displayed on a display element to an eyeball of a viewer, the optical system comprising:

• a resin lens;
• and
• a member for reducing transmission of ultraviolet light of the optical system,
• wherein the member is disposed closer to the viewer than the resin lens, and
• wherein the following inequalities are satisfied:
• 0
• <
• Tuv
• <
• 10
• 0
• <
• Rir
• <
• 10
• ,
• 0
• .
• 5
• <
• fuv
• /
• f
• <
• 1
• ⁢
• 0
• .
• 0
• where Tuv [%] is an average transmittance of the member at a wavelength of 300 to 360 nm, Rir [%] is an average reflectance of the member at a wavelength of 700 to 1000 nm, and fuv is a focal length of a lens including the member, and f is a focal length of the optical system.

A display apparatus comprising:

• a display element;
• and
• an optical system configured to guide an image displayed on the display element to an eyeball of a viewer,
• wherein the optical system includes:
• a resin lens;
• and
• a member for reducing transmission of ultraviolet light of the optical system,
• wherein the member is disposed closer to the viewer than the resin lens,
• wherein the member is disposed on an optical surface of the optical system closest to the viewer, and
• wherein the following inequalities are satisfied:
• 0
• <
• Tuv
• <
• 10
• 0
• <
• Rir
• <
• 10
• -
• 1.
• <
• h
• *
• EP
• /
• (
• Re
• *
• f
• )
• <
• 0.5
• where Tuv [%] is an average transmittance of the member at a wavelength of 300 to 360 nm, Rir [%] is an average reflectance of the member at a wavelength of 700 to 1000 nm, and Re is a curvature of the optical surface, f is a focal length of the optical system, h is a diagonal length of a display surface of the display element, and EP is an eyepoint distance of the optical system.

A display apparatus comprising:

• a display element;
• and
• an optical system configured to guide an image displayed on the display element to an eyeball of a viewer,
• wherein the optical system includes:
• a resin lens;
• and
• a member for reducing transmission of ultraviolet light of the optical system,
• wherein the member is disposed closer to the viewer than the resin lens,
• wherein the following inequalities are satisfied:
• 0
• <
• Tuv
• <
• 10
• 0
• <
• Rir
• <
• 10
• 0
• .
• 5
• <
• fuv
• /
• f
• <
• 1
• ⁢
• 0
• .
• 0
• where Tuv [%] is an average transmittance of the member at a wavelength of 300 to 360 nm, Rir [%] is an average reflectance of the member at a wavelength of 700 to 1000 nm, and fuv is a focal length of a lens including the member, and f is a focal length of the optical system.

An image pickup apparatus comprising:

• a display apparatus;
• and
• an image sensor;
• wherein the display apparatus comprising:
• a display element;
• and
• an optical system configured to guide an image displayed on the display element to an eyeball of a viewer,
• wherein the optical system includes:
• a resin lens;
• and
• a member for reducing transmission of ultraviolet light of the optical system,
• wherein the member is disposed closer to the viewer than the resin lens, wherein the member is disposed on an optical surface of the optical system closest to the viewer, and
• wherein the following inequalities are satisfied:
• 0
• <
• Tuv
• <
• 10
• 0
• <
• Rir
• <
• 10
• -
• 1
• ⁢
• 00
• <
• h
• *
• EP
• /
• (
• Re
• *
• f
• )
• <
• 0.5
• where Tuv [%] is an average transmittance of the member at a wavelength of 300 to 360 nm, Rir [%] is an average reflectance of the member at a wavelength of 700 to 1000 nm, and Re is a curvature of the optical surface, f is a focal length of the optical system, h is a diagonal length of a display surface of the display element, and EP is an eyepoint distance of the optical system.

An image pickup comprising:

• a display apparatus;
• and
• an image sensor;
• wherein the display apparatus comprising:
• a display element;
• and
• an optical system configured to guide an image displayed on the display element to an eyeball of a viewer,
• wherein the optical system includes:
• a resin lens;
• and
• a member for reducing transmission of ultraviolet light of the optical system,
• wherein the member is disposed closer to the viewer than the resin lens, and
• wherein the following inequalities are satisfied:
• 0
• <
• Tuv
• <
• 10
• 0
• <
• Rir
• <
• 10
• 0
• .
• 5
• <
• fuv
• /
• f
• <
• 1
• ⁢
• 0
• .
• 0
• where Tuv [%] is an average transmittance of the member at a wavelength of 300 to 360 nm, Rir [%] is an average reflectance of the member at a wavelength of 700 to 1000 nm, and fuv is a focal length of a lens including the member, and f is a focal length of the optical system.