Transmissive display apparatus, mobile object and control apparatus
First Claim
1. A transmissive display apparatus, comprising:
- a transparent display panel which transmits an extraneous light;
a display unit which projects a display light representing an image toward a display area set at a part of the transparent display panel;
a ratio change unit which is provided to the display area of the transparent display panel, is configured to be capable of changing a light transmittance, and is configured to be capable of changing a ratio of a light quantity of a rear face reflected light that reaches a viewpoint of an observer relative to a light quantity of a front face reflected light that reaches the viewpoint, the rear face reflected light being the display light having transmitted through a front face of the transparent display panel and having been reflected off a rear face of the transparent display panel, and the front face reflected light being the display light having been reflected off a front face side of the display area of the transparent display panel; and
a control unit which alternately switches the ratio change unit between a first state and a second state at a predetermined duty ratio, whereinthe ratio change unit lowers, in the first state, the ratio by reducing the light quantity of the rear face reflected light that reaches the viewpoint in comparison to the second state, andthe light transmittance of the ratio change unit increases in the second state in comparison to the first state.
1 Assignment
0 Petitions
Accused Products
Abstract
A transmissive display apparatus includes a transparent display panel, a display unit which projects a display light toward a display area of the transparent display panel, a ratio change unit which is provided to the display area, is configured to be capable of changing a light transmittance, and is configured to be capable of changing a ratio of a light quantity of a rear face reflected light reaching a viewpoint relative to a light quantity of a front face reflected light reaching the viewpoint, and a control unit which alternately switches the ratio change unit between a first state and a second state. The ratio change unit lowers, in the first state, the ratio by reducing the light quantity of the rear face reflected light that reaches the viewpoint in comparison to the second state. The light transmittance increases in the second state in comparison to the first state.
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Citations
11 Claims
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1. A transmissive display apparatus, comprising:
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a transparent display panel which transmits an extraneous light; a display unit which projects a display light representing an image toward a display area set at a part of the transparent display panel; a ratio change unit which is provided to the display area of the transparent display panel, is configured to be capable of changing a light transmittance, and is configured to be capable of changing a ratio of a light quantity of a rear face reflected light that reaches a viewpoint of an observer relative to a light quantity of a front face reflected light that reaches the viewpoint, the rear face reflected light being the display light having transmitted through a front face of the transparent display panel and having been reflected off a rear face of the transparent display panel, and the front face reflected light being the display light having been reflected off a front face side of the display area of the transparent display panel; and a control unit which alternately switches the ratio change unit between a first state and a second state at a predetermined duty ratio, wherein the ratio change unit lowers, in the first state, the ratio by reducing the light quantity of the rear face reflected light that reaches the viewpoint in comparison to the second state, and the light transmittance of the ratio change unit increases in the second state in comparison to the first state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A control apparatus which controls an image display unit,
wherein the image display unit includes: -
a transparent display panel which transmits an extraneous light; a display unit which projects a display light representing an image toward a display area set at a part of the transparent display panel; and a ratio change unit which is provided to the display area of the transparent display panel, is configured to be capable of changing a light transmittance, and is configured to be capable of changing a ratio of a light quantity of a rear face reflected light that reaches a viewpoint of an observer relative to a light quantity of a front face reflected light that reaches the viewpoint, the rear face reflected light being the display light having transmitted through a front face of the transparent display panel and having been reflected off a rear face of the transparent display panel, and the front face reflected light being the display light having been reflected off a front face side of the display area of the transparent display panel; wherein the control apparatus comprises; a control unit which outputs a control signal to the ratio change unit to alternately switch the ratio change unit between a first state and a second state at a predetermined duty ratio, wherein the ratio change unit lowers, in the first state, the ratio by reducing the light quantity of the rear face reflected light that reaches the viewpoint in comparison to the second state, and wherein the light transmittance of the ratio change unit increases in the second state in comparison to the first state.
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Specification