Method for manufacturing projection optical system and projection optical system
First Claim
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1. A method for manufacturing a projection optical system having a plurality of mirrors which reflect an image light modulated by an image formation device so as to be projected onto a screen, comprising:
- attaching the mirrors to a pedestal, the mirrors including a first mirror placed closest to the image formation device on an optical path traveling from the image formation device to the screen and a second mirror placed next to the first mirror on the optical path;
fixing a position and an inclination of the second mirror; and
adjusting at least three axes for a position and an inclination of the first mirror.
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Abstract
A projection optical system has lower and upper pedestal components to which a plurality of mirrors are attached. Of the mirrors, a concave mirror is placed closest to a DMD, and a convex mirror is next to the concave mirror. A position and an inclination of the convex mirror is fixed. At least three axes for a position and an inclination of the concave mirror is adjusted.
40 Citations
22 Claims
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1. A method for manufacturing a projection optical system having a plurality of mirrors which reflect an image light modulated by an image formation device so as to be projected onto a screen, comprising:
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attaching the mirrors to a pedestal, the mirrors including a first mirror placed closest to the image formation device on an optical path traveling from the image formation device to the screen and a second mirror placed next to the first mirror on the optical path;
fixing a position and an inclination of the second mirror; and
adjusting at least three axes for a position and an inclination of the first mirror. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 12)
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9. A method for manufacturing a projection optical system having a plurality of mirrors which reflect an image light modulated by an image formation device so as to be projected onto a screen, comprising:
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attaching the mirrors to a pedestal, the mirrors including a first mirror placed closest to the image formation device on an optical path traveling from the image formation device to the screen and a second mirror placed next to the first mirror on the optical path;
fixing a position and an inclination of the image formation device; and
adjusting at least three axes for a position and an inclination of the first mirror. - View Dependent Claims (10, 11)
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13. A projection optical system, comprising:
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a plurality of mirrors which reflect an image light modulated by an image formation device so as to be projected onto a screen, which includes a first mirror placed closest to the image formation device on an optical path traveling from the image formation device to the screen and a second mirror placed next to the first mirror on the optical path;
a pedestal on which the image formation device, the first mirror, and the second mirror are mounted; and
a mirror adjustment mechanism for supporting the first mirror so that the first mirror can be translated along a first axis, rotated around a second axis, and rotated around a third axis with respect to the pedestal, the first axis being an axis passing an intersection between the reference light beam and the first mirror, existing in an incidence plane of the reference light beam to the first mirror, and directed to a direction between an incident direction of the reference light beam to the first mirror and a reflection direction of the reference light beam from the first mirror, the second axis being an axis parallel to the incidence plane of the reference light beam to the first mirror and perpendicular to the first axis, and the third axis being an axis perpendicular to the first and second axes. - View Dependent Claims (14, 15, 16, 17)
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18. A projection optical system, comprising:
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a plurality of mirrors which reflect an image light modulated by an image formation device so as to be projected onto a screen, which includes a first mirror placed closest to the image formation device on an optical path traveling from the image formation device to the screen and a second mirror placed next to the first mirror on the optical path;
a pedestal on which the image formation device, the first mirror, and the second mirror are mounted; and
a mirror adjustment mechanism for supporting the first mirror so that the first mirror can be translated along a first axis, translated along a second axis, and translated along a third axis with respect to the pedestal, the first axis being an axis passing an intersection between the reference light beam and the first mirror, existing in an incidence plane of the reference light beam to the first mirror, and directed to a direction between an incident direction of the reference light beam to the first mirror and a reflection direction of the reference light beam from the first mirror, the second axis being an axis parallel to the incidence plane of the reference light beam to the first mirror and perpendicular to the first axis, and the third axis being an axis perpendicular to the first and second axes. - View Dependent Claims (19, 20, 21, 22)
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Specification